Mikrocontroller.net - Benutzerbeiträge [de]

USB Oszilloskop

2009-09-09T07:12:39Z

Womai: /* Hardware */

''von 0undNichtig''

Im Rahmen dieses Projektes entsteht ein Digitales Speicheroszilloskop mit USB-Anbindung. Das gesamte Ergebnis soll als OpenSource verfügbar gemacht werden.
Begonnen hat das ganze in diesem Forums-Beitrag: http://www.mikrocontroller.net/topic/56265
Eventuell wird es auch auf eine Mess/Steuer Box a la [http://www.eit.hs-karlsruhe.de/laborplatine/ Laborplatine] hinauslaufen oder sich näher an das [[Logic Analyzer-Projekt: Ideen zur Hardware|Logic Analyser Projekt]] annähern.

=Planung=
Bitte Planspiele auf der [[Diskussion:USB Oszilloskop|Diskussionsseite]] des Projektes durchführen!
==Alternative Projekte/Produkte==
Hier ist eine Liste von anderen Projekten, an denen man versch. Herangehensweise studieren kann.
Gesucht per www.nettz.de
*"build your own oscilloscope"
*"tv card" scope
*Oszilloskop selber bauen
*Oszi selbst bauen

http://elektronik-kompendium.de/public/dse-faq/mawin.htm#103

===Osziloskop Programme===
*http://www.electronics-lab.com/downloads/pc/index.html (Liste abgearbeitet)
*http://www.tech-systems-labs.com/test-software.htm (Liste)
*http://www.aubraux.com/dsp/pcscope.php
*http://xoscope.sourceforge.net (LINUX, für Soundkarte und externe Geräte OsziFOX, Bitscope )
*http://www.mitedu.freeserve.co.uk/Prac/winscope.htm (Soundkarte)
*http://hacca.altervista.org/
*http://www.zelscope.com/ (Soundkarte)
*http://infinitespectra.com (2 Soundkarten)
*BIP Electronics Lab Oscilloscope (Soundkarte)
*http://home.lanck.net/mf/oscil/ SB Oscillograph
*http://www.aubraux.com/dsp/ DspSee
*http://www.sillanumsoft.com/ Visual Analyser (+Freqzähler, Generator, Filter,..., sieht wirklich gut aus!)
*http://www.bergvagabund.userhost.de/multisine.html (+sehr viele Filter)
*http://www.dsp4swls.de/oszi/oszi.html (+DSP)
*http://www.qsl.net/om3cph/sb/dcwithsb.htm#hardware
*http://www.microsysteme.de/osci/oszilloskop.htm
*http://www.ginko.de/user/franz-peter/franz/projekte/soundcard/Soundcard-homepage.htm (Bewertung des Nutzen von SK Messungen)
*http://www.geda.seul.org/tools/gtkwave/index.html (Datenaufzeichnungsviewer)
*http://home.planet.nl/~m.f.hajer/scope2kcontents.htm (für versch. ADCs an LPT)

====kommerziell====
*www.ni.com/labview/d/ Labview
*http://www.home.agilent.com/agilent/product.jspx?cc=DE&lc=ger&nid=-536900532.536905620.00 VEE Pro
*http://www.tek.com/Measurement/scopes/openchoice/ OpenChoice
*http://www.ni.com/signalexpress/ SignalExpress
*http://www.virtins.com/ (WIN+PocketPC)

===Hardware===

*http://www.pdamusician.com/lcscope (2 Kanaele, 1 MHz, guter Analog-Frontend, leicht nachbaubar; Firmware und PC-Software)
*USB Oszilloskop im Bau http://microweb.mi.funpic.de
*http://www.electronics-lab.com/forum/index.php?board=13;action=display;threadid=351 (Liste)
*http://www.vscope.de (OSS, qC+Preescaler, Client+Server)
*http://www.elektronik-projekt.de/thread.php?threadid=3509
*http://www.mikrocontroller.net/articles/Logic_Analyzer_Project
*http://www.mikrocontroller.net/topic/31376#new (qC 800Messungen)
*http://www.bitscope.com
*http://members.tripod.com/michaelgellis/scope.html (1986)
*http://www.geocities.com/celupenga/Display_LCD.html (Mini LCD)
*http://homepages.compuserve.de/moritzcajetan/elektro/elektro.htm (Lowend)
*http://hackedgadgets.com/2006/04/25/top-5-uses-for-a-dead-hard-drive/2/ (Festplatte)
*http://home.planet.nl/~m.f.hajer/scope2k4.html (LPT)
*http://www.electronics-lab.com/projects/pc/007/ (LPT)
*http://kudelsko.free.fr/oscilloscope/sommaire.htm (RS232, USB, 30MHz)
*http://alternatezone.com/electronics/dsoamk3.htm (LPT 5MHz)
*http://www.chocbar.demon.co.uk/ (LPT 50MHz/100MHz)
*http://www.ee.washington.edu/conselec/CE/sp95reports/guterman/final/scope1.htm (15MHz)
*http://www.geocities.com/lptscope/hw.html (LPT
*http://www.leonardo.caltech.edu/~ee5x/eecs52/projects/scope/scope.htm ( 250KHz Mini LCD)
*http://www.nbb.cornell.edu/neurobio/land/STUDENTPROJ/1999to2000/gurnee/index.htm (Mini LCD+PC Anschluss, 2xqC+ADC)
*http://www.fpga4fun.com/digitalscope.html (200MHz)
*http://glory.honour.ca/projects/Oscilloscope/Oscilloscope.html (RS232 40KHz, sehr gut erklärt)
*http://www.elexs.de/mikros/r8c15_2.htm (RS232 20 MHz 80KS)
*http://www.semis.demon.co.uk/Gameboy/DsoDemo/DsoDemo.htm GBDSO (Gameboy 1MS)
*http://www.avrfreaks.net/index.php?module=Freaks%20Academy&func=viewItem&item_id=428&item_type=project (Mini LCD)
*http://www.ixbat.de/index.php?page_id=92 (LA einfach)
*http://www.xess.com/projects/radjab_oscope.pdf (FPGA Beispiel Design)
*http://eletronicalivre.incubadora.fapesp.br/portal/english/oscilloscope/ (ISA Karte+Lazarus(Delphi))
*http://alternatezone.com/electronics/pcla.htm (Logicanalyser,PLD)
*http://alternatezone.com/electronics/dsoamk3.htm (5MHz, 20MS LPT OHNE GAL,CPLD,FPGA!)
*http://www.cmccord.co.uk/FYP/final_report.htm (RS232, 4 Kanäle, PIC, +Hinweise für ähnliche Projekte)
*http://www.enetsystems.com/~lorenzo/scope/ ( CPLD)
*http://www.fpga4fun.com/digitalscope.html (100MHz 100MS, +gute Links)
*http://www.johann-glaser.at/projects/DSO/ (80MHz, Universalbox, Linux, +sehr ausführlich)
*http://www.eix.co.uk/Ethernet/USB/ (500KHz, Simpel)

====kommerziell====
*http://www.jbtech.de (Liste)
*http://www.tiepie.nl (Handyscope)
*http://www.radioshack.com/graphics/uc/rsk/Support/ProductManuals/2200310_PM_EN.pdf ProbeScope
*http://po.labs.googlepages.com/usbosciloskop
*http://www.vellemanusa.com/us/enu/product/view/?id=350595 (Handgerät)
*http://www.vellemanusa.com/us/enu/product/view/?id=351206 (LPT)
*http://www.wuntronic.de/gage/85gc.htm (PCI,5GS)
*http://www.messtechnik-online.at/oszifox.html
*http://shop.elv.de/output/controller.aspx?cid=74&detail=10&detail2=15232 Cleverscope
*http://shop.elv.de/output/controller.aspx?cid=74&detail=10&detail2=15246 PCSU 1000
*http://www.pctestinstruments.com/deutsch/index.htm Logicanalyser, Test Generator(Sinus,Dreieck,Rechteck,Noise), Frequenzzähler, Spektrumanalysator, Logikanalysator

==Anforderungen==
*galvanische Trennung vom PC
*2 Kanäle mit freier Triggerwahl
*min. 10% Pretriggerspeicher
*Meßbereich ohne Teilertastkopf von +/-20V
*Eicht/testet sich selbst nach Aufbau.
* Interface zu Labview 6.1

==="Ich benutze mein Oszi für..."===
Du arbeitest bereits mit einem Oszi und genau das willst du natürlich auch mit diesem USB Oszilloskop alles tun:
==="Ich würde mein Oszi gerne dafür benutzen..."===
Du hast noch kein (geeignetes) Oszi für die folgenden Dinge:
*I²C analysieren ||
*andere digitale Protokolle/Signalabläufe tracen (LCD,...) ||
*PC Bussysteme analysieren ||
*Linienverläufe als Vektorgrafik exportieren |
*komplette Ansteuer-/Messkurven durchfahren |
*Signalanalyse aller Art (Satelliten, Funk, ...) |

==Wissen + Interessantes==
*http://www.cmccord.co.uk/FYP/final_report.htm (RS232, 4 Kanäle, PIC, +Hinweise für ähnliche Projekte)
*http://www.du.edu/~etuttle/electron/elect29.htm (Schaltungen für Oszi Funktionen)
*http://www.national.com/pf/AD/ADC081000.html (8-Bit, 1 GSPS A/D Converter)
*http://www.national.com/pf/AD/ADC08D1500.html (8-Bit, 1,5 GSPS A/D Converter)
*http://www.national.com/pf/AD/ADC083000.html (8-Bit, 3 GSPS A/D Converter)

E2V (former Atmel) Gigasample AD Converter
*http://www.e2v.com/products/ccd-and-cmos-imaging-and-semiconductors/broadband-data-converters.cfm

Maxim Gigasample AD Converter
*http://www.maxim-ic.com/products/data_converters/high_speed.cfm
===Bücher===
* "Meßdatenerfassung mit dem PC" 3-8007-1741-7: Aßbach aber Grundlagen ganz gut dargestellt.

[[Category:Projekte|U]]
[[Category:USB]]
[[Category:Oszilloskope und Analyzer]]

Benutzer Diskussion:Womai

2009-01-29T06:30:36Z

Womai: Die Seite wurde neu angelegt: Der Text ist die Einleitung zu meinem Artikel ueber das Oszilloskop auf Instructables: http://www.instructables.com/id/LCS_1M_A_Full_Featured_Low_Cost_Hobby_Oscillosc/...

Der Text ist die Einleitung zu meinem Artikel ueber das Oszilloskop auf Instructables:

http://www.instructables.com/id/LCS_1M_A_Full_Featured_Low_Cost_Hobby_Oscillosc/

Habe mir gedacht, passt auch ganz gut in die Mikrocontroller-Artikelsammlung.

LCS-1M - Ein einfaches, preiswertes, mikrokontrollergesteuertes Zweikanal-Oszilloskop zum Selberbauen

2009-01-29T06:26:53Z

Womai:

''von Wolfgang M. (womai)''

T'schuldigung, der Rest ist derzeit noch auf Englisch (mein Originalbeitrag ist auf Instructables, und auch meine - weitgehend gleichlautende - Oszilloskop-Webseite ist Englisch). Fuer Fragen und Auskuenfte zum Oszilloskop stehe ich aber gerne auf Deutsch, Englisch und noetigenfalls Franzoesisch zur Verfuegung! (email ist auf meiner Webseite, http://www.pdamusician.com/lcscope)

== Einleitung ==

This instructable will show you how I developed a simple yet full-featured digital sampling oscilloscope that I hope will enable you to get a successful start in this domain. The main goals in this development were:

Create something that is really usable in practice - i.e. it must have sufficient sample rate to at least cover the audio range (DC up to well over 20 kHz), and a wide input range (from Millivolts up to several Volts). The present design actually is usable up to about 150 kHz (sample rate is 1 MHz = 1 million samples per second). The maximum voltage range is -15 to +20 Volts, but can also go down into the low mV range.

Use only readily available, inexpensive parts which don't need special skills to assemble - e.g. no tiny surface mount components. The whole scope can be put together with a cheap soldering iron, a small wire cutter and flat-nosed pliers.

Keep down cost as much as possible and design it in a way that all the components are easy to procure and assemble, so any moderately skilled hobbyist can build his/her own (see circuit description later).

Make it easy to use so even a user without much experience with oscilloscope gets a quick start, and make it compact so it doesn't use much desk space.

Last but not least, make it an open design so anyone can improve upon it. Note that the design may be used without any restrictions for personal, non-commercial use only. Any other use is strictly prohibited without explicit, written permission by the author.

You can get additional information as well as download the original design files (schematic, layout) and scope software from my oscilloscope homepage. From this site you can also obtain the bare printed circuit board and the pre-programmed microcontroller.

In case you wonder what LCS-1M stands for, it's Low Cost Scope, 1 Megasample/sec.

Good luck!

Disclaimer (yes, this is a litigious world :-):

The author of these pages does not assume any responsibility whatsoever regarding the design, construction or use of the described circuit. The author cannot be held responsible for any damage to persons or property connected with the described design. This includes (but is not limited to) damage to your computer, fitness for a specific task, and specified performance. If you decide to build the oscilloscope and use it, you do so at your own risk. Observe safety guidelines when soldering, as well as when using the oscilloscope. Never apply any voltage exceeding 20V to the oscilloscope inputs.

An oscilloscope is an invaluable tool for anyone working in electronics. It allows studying electrical signals that are changing over time. Perfect for troubleshooting, monitoring, or simply observing one's electronic creations in more detail.

Unfortunately, even with significant reductions in cost in recent years, a usable oscilloscope remains out of reach for many people who could benefit from it - especially young students just starting out, and many hobbyists on a limited budget. A good low-end standalone scope easily comes in at over US$1000, and even PC-based scopes (which connect to a computer for display and control) usually cost US$300 and above.

On the other hand, most "hobby" solutions (sound-card based or purely microcontroller based) lack sufficient performance and usually are not much more than toys without much practical use. Most of the time they are more like "proof of concepts" that lack any decent frontend (to amplify small signals or attenuate signals) and have bandwidths much too low even for audio.

Of course it is often possible to pick up a decent used analog scope on Ebay for a good price, but most such scopes (cathode ray type) are rather bulky and bothersome, especially for someone without the luxury of a spacious electronics lab, and they often are difficult to use without a good dose of prior experience.

Eine Liste von Features:

Here is an overview about the capabilities of my design:

Hardware Performance:

* Two independent input channels
* Sample rate up to 1 MSample/sec (good enough for signals up to approx. 150 kHz)
* Analog bandwidth approx. 400 kHz
* Input impedance > 100 kOhm
* Sensitivity from 20mV/div to 1V/div (20 vertical divisions).
* Vertical offset 0 - 20 divisions (except for 0 - 12 divisions in 1V/div range)
* Record length 256 samples per channel
* Trigger on CH1 (rising or falling edge, selectable) or autotrigger
* Connects to PC through serial port (RS-232) or USB
* Power supply from a generic wall-wart type supply (9 - 15 V DC)
* Compact and lightweight (about the size of a DVD box)

PC-based Scope Software:

* Runs on Windows 95, 98, 2000, XP, Vista
* Fully graphical interface.
* All settings (timebase, vertical resolution, trigger) are controlled from the PC.
* Screen update rate up to 7 frames/sec (mostly limited by scope hardware; will improve with future versions of the hardware)
* Real-time Fourier transform (frequency spectrum display)
* Real-time averaging
* Waveform measurements using cursors
* Waveform export to Excel etc. (.CSV file format)

Construction:

* All components easily available and inexpensive. About half of the chips can be obtained as free samples from the manufacturer.
* Total parts cost approx. US$60 for minimal version (bare board, i.e. no enclosure).
* Through-hole and DIP packages only - easy to assemble and solder.
* Can be built up on a breadboard or a protoboard (but I'd recommend the "real" printed circuit board to minimize work and possibility for mistakes).
* No adjustments or trimmings necessary whatsoever - put it together and use it right away! Thus very beginner-friendly.
* No separate programmer needed for the microcontroller (Picaxe 28X1) - the cable already used for PC connection is all that is needed. Programming software is freely available as well.
* Fits in a robust standard enclosure
* Accepts standard 1:1 probes, BNC cables, or grabber cables.

== Hardware ==

A detailed description of the scope hardware (and how to build your own is here):

http://www.pdamusician.com/lcscope/design.html

== Downloads ==

Scope homepage: http://www.pdamusician.com/lcscope/index.html

Hardware: http://www.pdamusician.com/lcscope/design.html

Schematic: http://www.pdamusician.com/lcscope/design_download.html

Layout: http://www.pdamusician.com/lcscope/design_download.html

Bill of materials: http://www.pdamusician.com/lcscope/design_download.html

Download of firmware and PC software: http://www.pdamusician.com/lcscope/design_download.html

== Siehe auch ==

Article on Instructables:

http://www.instructables.com/id/LCS_1M_A_Full_Featured_Low_Cost_Hobby_Oscillosc/

LCS-1M - Ein einfaches, preiswertes, mikrokontrollergesteuertes Zweikanal-Oszilloskop zum Selberbauen

2009-01-29T06:25:33Z

Womai: /* Einleitung */

''von Wolfgang M. (womai)''

T'schuldigung, der Rest ist derzeit noch auf Englisch (mein Originalbeitrag ist auf Instructables, und auch meine - weitgehend gleichlautende - Oszilloskop-Webseite ist Englisch). Fuer Fragen und Auskuenfte zum Oszilloskop stehe ich aber gerne auf Deutsch, Englisch und noetigenfalls Franzoesisch zur Verfuegung! (email ist auf meiner Webseite, http://www.pdamusician.com/lcscope)

== Einleitung ==

This instructable will show you how I developed a simple yet full-featured digital sampling oscilloscope that I hope will enable you to get a successful start in this domain. The main goals in this development were:

Create something that is really usable in practice - i.e. it must have sufficient sample rate to at least cover the audio range (DC up to well over 20 kHz), and a wide input range (from Millivolts up to several Volts). The present design actually is usable up to about 150 kHz (sample rate is 1 MHz = 1 million samples per second). The maximum voltage range is -15 to +20 Volts, but can also go down into the low mV range.

Use only readily available, inexpensive parts which don't need special skills to assemble - e.g. no tiny surface mount components. The whole scope can be put together with a cheap soldering iron, a small wire cutter and flat-nosed pliers.

Keep down cost as much as possible and design it in a way that all the components are easy to procure and assemble, so any moderately skilled hobbyist can build his/her own (see circuit description later).

Make it easy to use so even a user without much experience with oscilloscope gets a quick start, and make it compact so it doesn't use much desk space.

Last but not least, make it an open design so anyone can improve upon it. Note that the design may be used without any restrictions for personal, non-commercial use only. Any other use is strictly prohibited without explicit, written permission by the author.

You can get additional information as well as download the original design files (schematic, layout) and scope software from my oscilloscope homepage. From this site you can also obtain the bare printed circuit board and the pre-programmed microcontroller.

In case you wonder what LCS-1M stands for, it's Low Cost Scope, 1 Megasample/sec.

Good luck!

Disclaimer (yes, this is a litigious world :-):

The author of these pages does not assume any responsibility whatsoever regarding the design, construction or use of the described circuit. The author cannot be held responsible for any damage to persons or property connected with the described design. This includes (but is not limited to) damage to your computer, fitness for a specific task, and specified performance. If you decide to build the oscilloscope and use it, you do so at your own risk. Observe safety guidelines when soldering, as well as when using the oscilloscope. Never apply any voltage exceeding 20V to the oscilloscope inputs.

An oscilloscope is an invaluable tool for anyone working in electronics. It allows studying electrical signals that are changing over time. Perfect for troubleshooting, monitoring, or simply observing one's electronic creations in more detail.

Unfortunately, even with significant reductions in cost in recent years, a usable oscilloscope remains out of reach for many people who could benefit from it - especially young students just starting out, and many hobbyists on a limited budget. A good low-end standalone scope easily comes in at over US$1000, and even PC-based scopes (which connect to a computer for display and control) usually cost US$300 and above.

On the other hand, most "hobby" solutions (sound-card based or purely microcontroller based) lack sufficient performance and usually are not much more than toys without much practical use. Most of the time they are more like "proof of concepts" that lack any decent frontend (to amplify small signals or attenuate signals) and have bandwidths much too low even for audio.

Of course it is often possible to pick up a decent used analog scope on Ebay for a good price, but most such scopes (cathode ray type) are rather bulky and bothersome, especially for someone without the luxury of a spacious electronics lab, and they often are difficult to use without a good dose of prior experience.

Eine Liste von Features:

Here is an overview about the capabilities of my design:

Hardware Performance:

* Two independent input channels
* Sample rate up to 1 MSample/sec (good enough for signals up to approx. 150 kHz)
* Analog bandwidth approx. 400 kHz
* Input impedance > 100 kOhm
* Sensitivity from 20mV/div to 1V/div (20 vertical divisions).
* Vertical offset 0 - 20 divisions (except for 0 - 12 divisions in 1V/div range)
* Record length 256 samples per channel
* Trigger on CH1 (rising or falling edge, selectable) or autotrigger
* Connects to PC through serial port (RS-232) or USB
* Power supply from a generic wall-wart type supply (9 - 15 V DC)
* Compact and lightweight (about the size of a DVD box)

PC-based Scope Software:

* Runs on Windows 95, 98, 2000, XP, Vista
* Fully graphical interface.
* All settings (timebase, vertical resolution, trigger) are controlled from the PC.
* Screen update rate up to 7 frames/sec (mostly limited by scope hardware; will improve with future

versions of the hardware)

* Real-time Fourier transform (frequency spectrum display)
* Real-time averaging
* Waveform measurements using cursors
* Waveform export to Excel etc. (.CSV file format)

Construction:

* All components easily available and inexpensive. About half of the chips can be obtained as free samples from the manufacturer.

* Total parts cost approx. US$60 for minimal version (bare board, i.e. no enclosure).
* Through-hole and DIP packages only - easy to assemble and solder.
* Can be built up on a breadboard or a protoboard (but I'd recommend the "real" printed circuit board to minimize work and possibility for mistakes).

* No adjustments or trimmings necessary whatsoever - put it together and use it right away! Thus very beginner-friendly.

* No separate programmer needed for the microcontroller (Picaxe 28X1) - the cable already used for PC connection is all that is needed. Programming software is freely available as well.

* Fits in a robust standard enclosure
* Accepts standard 1:1 probes, BNC cables, or grabber cables.

== Hardware ==

A detailed description of the scope hardware (and how to build your own is here):

http://www.pdamusician.com/lcscope/design.html

== Downloads ==

Scope homepage: http://www.pdamusician.com/lcscope/index.html

Hardware: http://www.pdamusician.com/lcscope/design.html

Schematic: http://www.pdamusician.com/lcscope/design_download.html

Layout: http://www.pdamusician.com/lcscope/design_download.html

Bill of materials: http://www.pdamusician.com/lcscope/design_download.html

Download of firmware and PC software: http://www.pdamusician.com/lcscope/design_download.html

== Siehe auch ==

Article on Instructables:

http://www.instructables.com/id/LCS_1M_A_Full_Featured_Low_Cost_Hobby_Oscillosc/

LCS-1M - Ein einfaches, preiswertes, mikrokontrollergesteuertes Zweikanal-Oszilloskop zum Selberbauen

2009-01-29T06:23:59Z

Womai:

''von Wolfgang M. (womai)''

T'schuldigung, der Rest ist derzeit noch auf Englisch (mein Originalbeitrag ist auf Instructables, und auch meine - weitgehend gleichlautende - Oszilloskop-Webseite ist Englisch). Fuer Fragen und Auskuenfte zum Oszilloskop stehe ich aber gerne auf Deutsch, Englisch und noetigenfalls Franzoesisch zur Verfuegung! (email ist auf meiner Webseite, http://www.pdamusician.com/lcscope)

== Einleitung ==

This instructable will show you how I developed a simple yet full-featured digital sampling oscilloscope that I hope will enable you to get a successful start in this domain. The main goals in this development were:

Create something that is really usable in practice - i.e. it must have sufficient sample rate to at least cover the audio range (DC up to well over 20 kHz), and a wide input range (from Millivolts up to several Volts). The present design actually is usable up to about 150 kHz (sample rate is 1 MHz = 1 million samples per second). The maximum voltage range is -15 to +20 Volts, but can also go down into the low mV range.

Use only readily available, inexpensive parts which don't need special skills to assemble - e.g. no tiny surface mount components. The whole scope can be put together with a cheap soldering iron, a small wire cutter and flat-nosed pliers.

Keep down cost as much as possible and design it in a way that all the components are easy to procure and assemble, so any moderately skilled hobbyist can build his/her own (see circuit description later).

Make it easy to use so even a user without much experience with oscilloscope gets a quick start, and make it compact so it doesn't use much desk space.

Last but not least, make it an open design so anyone can improve upon it. Note that the design may be used without any restrictions for personal, non-commercial use only. Any other use is strictly prohibited without explicit, written permission by the author.

You can get additional information as well as download the original design files (schematic, layout) and scope software from my oscilloscope homepage. From this site you can also obtain the bare printed circuit board and (as long as I have some left) the fully assembled scope and accessories.

In case you wonder what LCS-1M stands for, it's Low Cost Scope, 1 Megasample/sec.

Good luck!

Disclaimer (yes, this is a litigious world :-):

The author of these pages does not assume any responsibility whatsoever regarding the design, construction or use of the described circuit. The author cannot be held responsible for any damage to persons or property connected with the described design. This includes (but is not limited to) damage to your computer, fitness for a specific task, and specified performance. If you decide to build the oscilloscope and use it, you do so at your own risk. Observe safety guidelines when soldering, as well as when using the oscilloscope. Never apply any voltage exceeding 20V to the oscilloscope inputs.

An oscilloscope is an invaluable tool for anyone working in electronics. It allows studying electrical signals that are changing over time. Perfect for troubleshooting, monitoring, or simply observing one's electronic creations in more detail.

Unfortunately, even with significant reductions in cost in recent years, a usable oscilloscope remains out of reach for many people who could benefit from it - especially young students just starting out, and many hobbyists on a limited budget. A good low-end standalone scope easily comes in at over US$1000, and even PC-based scopes (which connect to a computer for display and control) usually cost US$300 and above.

On the other hand, most "hobby" solutions (sound-card based or purely microcontroller based) lack sufficient performance and usually are not much more than toys without much practical use. Most of the time they are more like "proof of concepts" that lack any decent frontend (to amplify small signals or attenuate signals) and have bandwidths much too low even for audio.

Of course it is often possible to pick up a decent used analog scope on Ebay for a good price, but most such scopes (cathode ray type) are rather bulky and bothersome, especially for someone without the luxury of a spacious electronics lab, and they often are difficult to use without a good dose of prior experience.

Eine Liste von Features:

Here is an overview about the capabilities of my design:

Hardware Performance:

* Two independent input channels
* Sample rate up to 1 MSample/sec (good enough for signals up to approx. 150 kHz)
* Analog bandwidth approx. 400 kHz
* Input impedance > 100 kOhm
* Sensitivity from 20mV/div to 1V/div (20 vertical divisions).
* Vertical offset 0 - 20 divisions (except for 0 - 12 divisions in 1V/div range)
* Record length 256 samples per channel
* Trigger on CH1 (rising or falling edge, selectable) or autotrigger
* Connects to PC through serial port (RS-232) or USB
* Power supply from a generic wall-wart type supply (9 - 15 V DC)
* Compact and lightweight (about the size of a DVD box)

PC-based Scope Software:

* Runs on Windows 95, 98, 2000, XP, Vista
* Fully graphical interface.
* All settings (timebase, vertical resolution, trigger) are controlled from the PC.
* Screen update rate up to 7 frames/sec (mostly limited by scope hardware; will improve with future

versions of the hardware)

* Real-time Fourier transform (frequency spectrum display)
* Real-time averaging
* Waveform measurements using cursors
* Waveform export to Excel etc. (.CSV file format)

Construction:

* All components easily available and inexpensive. About half of the chips can be obtained as free

samples from the manufacturer.

* Total parts cost approx. US$60 for minimal version (bare board, i.e. no enclosure).
* Through-hole and DIP packages only - easy to assemble and solder.
* Can be built up on a breadboard or a protoboard (but I'd recommend the "real" printed circuit board

to minimize work and possibility for mistakes).

* No adjustments or trimmings necessary whatsoever - put it together and use it right away! Thus

very beginner-friendly.

* No separate programmer needed for the microcontroller (Picaxe 28X1) - the cable already used for

PC connection is all that is needed. Programming software is freely available as well.

* Fits in a robust standard enclosure
* Accepts standard 1:1 probes, BNC cables, or grabber cables.

== Hardware ==

A detailed description of the scope hardware (and how to build your own is here):

http://www.pdamusician.com/lcscope/design.html

== Downloads ==

Scope homepage: http://www.pdamusician.com/lcscope/index.html

Hardware: http://www.pdamusician.com/lcscope/design.html

Schematic: http://www.pdamusician.com/lcscope/design_download.html

Layout: http://www.pdamusician.com/lcscope/design_download.html

Bill of materials: http://www.pdamusician.com/lcscope/design_download.html

Download of firmware and PC software: http://www.pdamusician.com/lcscope/design_download.html

== Siehe auch ==

Article on Instructables:

http://www.instructables.com/id/LCS_1M_A_Full_Featured_Low_Cost_Hobby_Oscillosc/

LCS-1M - Ein einfaches, preiswertes, mikrokontrollergesteuertes Zweikanal-Oszilloskop zum Selberbauen

2009-01-29T06:23:22Z

Womai:

''von Wolfgang M. (womai)''

T'schuldigung, der Rest ist derzeit noch auf Englisch (mein Originalbeitrag ist auf Instructables, und auch meine - weitgehend gleichlautende - Oszilloscop-Webseite ist Englisch). Fuer Fragen und Auskuenfte zum Oszilloskop stehe ich aber gerne auf Deutsch, Englisch und noetigenfalls Franzoesisch zur Verfuegung! (email ist auf meiner Webseite, http://www.pdamusician.com/lcscope)

== Einleitung ==

This instructable will show you how I developed a simple yet full-featured digital sampling oscilloscope that I hope will enable you to get a successful start in this domain. The main goals in this development were:

Create something that is really usable in practice - i.e. it must have sufficient sample rate to at least cover the audio range (DC up to well over 20 kHz), and a wide input range (from Millivolts up to several Volts). The present design actually is usable up to about 150 kHz (sample rate is 1 MHz = 1 million samples per second). The maximum voltage range is -15 to +20 Volts, but can also go down into the low mV range.

Use only readily available, inexpensive parts which don't need special skills to assemble - e.g. no tiny surface mount components. The whole scope can be put together with a cheap soldering iron, a small wire cutter and flat-nosed pliers.

Keep down cost as much as possible and design it in a way that all the components are easy to procure and assemble, so any moderately skilled hobbyist can build his/her own (see circuit description later).

Make it easy to use so even a user without much experience with oscilloscope gets a quick start, and make it compact so it doesn't use much desk space.

Last but not least, make it an open design so anyone can improve upon it. Note that the design may be used without any restrictions for personal, non-commercial use only. Any other use is strictly prohibited without explicit, written permission by the author.

You can get additional information as well as download the original design files (schematic, layout) and scope software from my oscilloscope homepage. From this site you can also obtain the bare printed circuit board and (as long as I have some left) the fully assembled scope and accessories.

In case you wonder what LCS-1M stands for, it's Low Cost Scope, 1 Megasample/sec.

Good luck!

Disclaimer (yes, this is a litigious world :-):

The author of these pages does not assume any responsibility whatsoever regarding the design, construction or use of the described circuit. The author cannot be held responsible for any damage to persons or property connected with the described design. This includes (but is not limited to) damage to your computer, fitness for a specific task, and specified performance. If you decide to build the oscilloscope and use it, you do so at your own risk. Observe safety guidelines when soldering, as well as when using the oscilloscope. Never apply any voltage exceeding 20V to the oscilloscope inputs.

An oscilloscope is an invaluable tool for anyone working in electronics. It allows studying electrical signals that are changing over time. Perfect for troubleshooting, monitoring, or simply observing one's electronic creations in more detail.

Unfortunately, even with significant reductions in cost in recent years, a usable oscilloscope remains out of reach for many people who could benefit from it - especially young students just starting out, and many hobbyists on a limited budget. A good low-end standalone scope easily comes in at over US$1000, and even PC-based scopes (which connect to a computer for display and control) usually cost US$300 and above.

On the other hand, most "hobby" solutions (sound-card based or purely microcontroller based) lack sufficient performance and usually are not much more than toys without much practical use. Most of the time they are more like "proof of concepts" that lack any decent frontend (to amplify small signals or attenuate signals) and have bandwidths much too low even for audio.

Of course it is often possible to pick up a decent used analog scope on Ebay for a good price, but most such scopes (cathode ray type) are rather bulky and bothersome, especially for someone without the luxury of a spacious electronics lab, and they often are difficult to use without a good dose of prior experience.

Eine Liste von Features:

Here is an overview about the capabilities of my design:

Hardware Performance:

* Two independent input channels
* Sample rate up to 1 MSample/sec (good enough for signals up to approx. 150 kHz)
* Analog bandwidth approx. 400 kHz
* Input impedance > 100 kOhm
* Sensitivity from 20mV/div to 1V/div (20 vertical divisions).
* Vertical offset 0 - 20 divisions (except for 0 - 12 divisions in 1V/div range)
* Record length 256 samples per channel
* Trigger on CH1 (rising or falling edge, selectable) or autotrigger
* Connects to PC through serial port (RS-232) or USB
* Power supply from a generic wall-wart type supply (9 - 15 V DC)
* Compact and lightweight (about the size of a DVD box)

PC-based Scope Software:

* Runs on Windows 95, 98, 2000, XP, Vista
* Fully graphical interface.
* All settings (timebase, vertical resolution, trigger) are controlled from the PC.
* Screen update rate up to 7 frames/sec (mostly limited by scope hardware; will improve with future

versions of the hardware)

* Real-time Fourier transform (frequency spectrum display)
* Real-time averaging
* Waveform measurements using cursors
* Waveform export to Excel etc. (.CSV file format)

Construction:

* All components easily available and inexpensive. About half of the chips can be obtained as free

samples from the manufacturer.

* Total parts cost approx. US$60 for minimal version (bare board, i.e. no enclosure).
* Through-hole and DIP packages only - easy to assemble and solder.
* Can be built up on a breadboard or a protoboard (but I'd recommend the "real" printed circuit board

to minimize work and possibility for mistakes).

* No adjustments or trimmings necessary whatsoever - put it together and use it right away! Thus

very beginner-friendly.

* No separate programmer needed for the microcontroller (Picaxe 28X1) - the cable already used for

PC connection is all that is needed. Programming software is freely available as well.

* Fits in a robust standard enclosure
* Accepts standard 1:1 probes, BNC cables, or grabber cables.

== Hardware ==

A detailed description of the scope hardware (and how to build your own is here):

http://www.pdamusician.com/lcscope/design.html

== Downloads ==

Scope homepage: http://www.pdamusician.com/lcscope/index.html

Hardware: http://www.pdamusician.com/lcscope/design.html

Schematic: http://www.pdamusician.com/lcscope/design_download.html

Layout: http://www.pdamusician.com/lcscope/design_download.html

Bill of materials: http://www.pdamusician.com/lcscope/design_download.html

Download of firmware and PC software: http://www.pdamusician.com/lcscope/design_download.html

== Siehe auch ==

Article on Instructables:

http://www.instructables.com/id/LCS_1M_A_Full_Featured_Low_Cost_Hobby_Oscillosc/

LCS-1M - Ein einfaches, preiswertes, mikrokontrollergesteuertes Zweikanal-Oszilloskop zum Selberbauen

2009-01-29T06:22:01Z

Womai: /* Downloads */

von Wolfgang M. (womai)

T'schuldigung, der Rest ist derzeit noch auf Englisch (mein Originalbeitrag ist auf Instructables, und auch meine - weitgehend gleichlautende - Oszilloscop-Webseite ist Englisch). Fuer Fragen und Auskuenfte zum Oszilloskop stehe ich aber gerne auf Deutsch, Englisch und noetigenfalls Franzoesisch zur Verfuegung! (email ist auf meiner Webseite, http://www.pdamusician.com/lcscope)

== Einleitung ==

This instructable will show you how I developed a simple yet full-featured digital sampling oscilloscope that I hope will enable you to get a successful start in this domain. The main goals in this development were:

Create something that is really usable in practice - i.e. it must have sufficient sample rate to at least cover the audio range (DC up to well over 20 kHz), and a wide input range (from Millivolts up to several Volts). The present design actually is usable up to about 150 kHz (sample rate is 1 MHz = 1 million samples per second). The maximum voltage range is -15 to +20 Volts, but can also go down into the low mV range.

Use only readily available, inexpensive parts which don't need special skills to assemble - e.g. no tiny surface mount components. The whole scope can be put together with a cheap soldering iron, a small wire cutter and flat-nosed pliers.

Keep down cost as much as possible and design it in a way that all the components are easy to procure and assemble, so any moderately skilled hobbyist can build his/her own (see circuit description later).

Make it easy to use so even a user without much experience with oscilloscope gets a quick start, and make it compact so it doesn't use much desk space.

Last but not least, make it an open design so anyone can improve upon it. Note that the design may be used without any restrictions for personal, non-commercial use only. Any other use is strictly prohibited without explicit, written permission by the author.

You can get additional information as well as download the original design files (schematic, layout) and scope software from my oscilloscope homepage. From this site you can also obtain the bare printed circuit board and (as long as I have some left) the fully assembled scope and accessories.

In case you wonder what LCS-1M stands for, it's Low Cost Scope, 1 Megasample/sec.

Good luck!

Disclaimer (yes, this is a litigious world :-):

The author of these pages does not assume any responsibility whatsoever regarding the design, construction or use of the described circuit. The author cannot be held responsible for any damage to persons or property connected with the described design. This includes (but is not limited to) damage to your computer, fitness for a specific task, and specified performance. If you decide to build the oscilloscope and use it, you do so at your own risk. Observe safety guidelines when soldering, as well as when using the oscilloscope. Never apply any voltage exceeding 20V to the oscilloscope inputs.

An oscilloscope is an invaluable tool for anyone working in electronics. It allows studying electrical signals that are changing over time. Perfect for troubleshooting, monitoring, or simply observing one's electronic creations in more detail.

Unfortunately, even with significant reductions in cost in recent years, a usable oscilloscope remains out of reach for many people who could benefit from it - especially young students just starting out, and many hobbyists on a limited budget. A good low-end standalone scope easily comes in at over US$1000, and even PC-based scopes (which connect to a computer for display and control) usually cost US$300 and above.

On the other hand, most "hobby" solutions (sound-card based or purely microcontroller based) lack sufficient performance and usually are not much more than toys without much practical use. Most of the time they are more like "proof of concepts" that lack any decent frontend (to amplify small signals or attenuate signals) and have bandwidths much too low even for audio.

Of course it is often possible to pick up a decent used analog scope on Ebay for a good price, but most such scopes (cathode ray type) are rather bulky and bothersome, especially for someone without the luxury of a spacious electronics lab, and they often are difficult to use without a good dose of prior experience.

Eine Liste von Features:

Here is an overview about the capabilities of my design:

Hardware Performance:

* Two independent input channels
* Sample rate up to 1 MSample/sec (good enough for signals up to approx. 150 kHz)
* Analog bandwidth approx. 400 kHz
* Input impedance > 100 kOhm
* Sensitivity from 20mV/div to 1V/div (20 vertical divisions).
* Vertical offset 0 - 20 divisions (except for 0 - 12 divisions in 1V/div range)
* Record length 256 samples per channel
* Trigger on CH1 (rising or falling edge, selectable) or autotrigger
* Connects to PC through serial port (RS-232) or USB
* Power supply from a generic wall-wart type supply (9 - 15 V DC)
* Compact and lightweight (about the size of a DVD box)

PC-based Scope Software:

* Runs on Windows 95, 98, 2000, XP, Vista
* Fully graphical interface.
* All settings (timebase, vertical resolution, trigger) are controlled from the PC.
* Screen update rate up to 7 frames/sec (mostly limited by scope hardware; will improve with future

versions of the hardware)

* Real-time Fourier transform (frequency spectrum display)
* Real-time averaging
* Waveform measurements using cursors
* Waveform export to Excel etc. (.CSV file format)

Construction:

* All components easily available and inexpensive. About half of the chips can be obtained as free

samples from the manufacturer.

* Total parts cost approx. US$60 for minimal version (bare board, i.e. no enclosure).
* Through-hole and DIP packages only - easy to assemble and solder.
* Can be built up on a breadboard or a protoboard (but I'd recommend the "real" printed circuit board

to minimize work and possibility for mistakes).

* No adjustments or trimmings necessary whatsoever - put it together and use it right away! Thus

very beginner-friendly.

* No separate programmer needed for the microcontroller (Picaxe 28X1) - the cable already used for

PC connection is all that is needed. Programming software is freely available as well.

* Fits in a robust standard enclosure
* Accepts standard 1:1 probes, BNC cables, or grabber cables.

== Hardware ==

A detailed description of the scope hardware (and how to build your own is here):

http://www.pdamusician.com/lcscope/design.html

== Downloads ==

Scope homepage: http://www.pdamusician.com/lcscope/index.html

Hardware: http://www.pdamusician.com/lcscope/design.html

Schematic: http://www.pdamusician.com/lcscope/design_download.html

Layout: http://www.pdamusician.com/lcscope/design_download.html

Bill of materials: http://www.pdamusician.com/lcscope/design_download.html

Download of firmware and PC software: http://www.pdamusician.com/lcscope/design_download.html

== Siehe auch ==

Article on Instructables:

http://www.instructables.com/id/LCS_1M_A_Full_Featured_Low_Cost_Hobby_Oscillosc/

LCS-1M - Ein einfaches, preiswertes, mikrokontrollergesteuertes Zweikanal-Oszilloskop zum Selberbauen

2009-01-29T06:21:03Z

Womai: Die Seite wurde neu angelegt: von Wolfgang M. (womai) T'schuldigung, der Rest ist derzeit noch auf Englisch (mein Originalbeitrag ist auf Instructables, und auch meine - weitgehend gleichlautende ...

von Wolfgang M. (womai)

T'schuldigung, der Rest ist derzeit noch auf Englisch (mein Originalbeitrag ist auf Instructables, und auch meine - weitgehend gleichlautende - Oszilloscop-Webseite ist Englisch). Fuer Fragen und Auskuenfte zum Oszilloskop stehe ich aber gerne auf Deutsch, Englisch und noetigenfalls Franzoesisch zur Verfuegung! (email ist auf meiner Webseite, http://www.pdamusician.com/lcscope)

== Einleitung ==

This instructable will show you how I developed a simple yet full-featured digital sampling oscilloscope that I hope will enable you to get a successful start in this domain. The main goals in this development were:

Create something that is really usable in practice - i.e. it must have sufficient sample rate to at least cover the audio range (DC up to well over 20 kHz), and a wide input range (from Millivolts up to several Volts). The present design actually is usable up to about 150 kHz (sample rate is 1 MHz = 1 million samples per second). The maximum voltage range is -15 to +20 Volts, but can also go down into the low mV range.

Use only readily available, inexpensive parts which don't need special skills to assemble - e.g. no tiny surface mount components. The whole scope can be put together with a cheap soldering iron, a small wire cutter and flat-nosed pliers.

Keep down cost as much as possible and design it in a way that all the components are easy to procure and assemble, so any moderately skilled hobbyist can build his/her own (see circuit description later).

Make it easy to use so even a user without much experience with oscilloscope gets a quick start, and make it compact so it doesn't use much desk space.

Last but not least, make it an open design so anyone can improve upon it. Note that the design may be used without any restrictions for personal, non-commercial use only. Any other use is strictly prohibited without explicit, written permission by the author.

You can get additional information as well as download the original design files (schematic, layout) and scope software from my oscilloscope homepage. From this site you can also obtain the bare printed circuit board and (as long as I have some left) the fully assembled scope and accessories.

In case you wonder what LCS-1M stands for, it's Low Cost Scope, 1 Megasample/sec.

Good luck!

Disclaimer (yes, this is a litigious world :-):

The author of these pages does not assume any responsibility whatsoever regarding the design, construction or use of the described circuit. The author cannot be held responsible for any damage to persons or property connected with the described design. This includes (but is not limited to) damage to your computer, fitness for a specific task, and specified performance. If you decide to build the oscilloscope and use it, you do so at your own risk. Observe safety guidelines when soldering, as well as when using the oscilloscope. Never apply any voltage exceeding 20V to the oscilloscope inputs.

An oscilloscope is an invaluable tool for anyone working in electronics. It allows studying electrical signals that are changing over time. Perfect for troubleshooting, monitoring, or simply observing one's electronic creations in more detail.

Unfortunately, even with significant reductions in cost in recent years, a usable oscilloscope remains out of reach for many people who could benefit from it - especially young students just starting out, and many hobbyists on a limited budget. A good low-end standalone scope easily comes in at over US$1000, and even PC-based scopes (which connect to a computer for display and control) usually cost US$300 and above.

On the other hand, most "hobby" solutions (sound-card based or purely microcontroller based) lack sufficient performance and usually are not much more than toys without much practical use. Most of the time they are more like "proof of concepts" that lack any decent frontend (to amplify small signals or attenuate signals) and have bandwidths much too low even for audio.

Of course it is often possible to pick up a decent used analog scope on Ebay for a good price, but most such scopes (cathode ray type) are rather bulky and bothersome, especially for someone without the luxury of a spacious electronics lab, and they often are difficult to use without a good dose of prior experience.

Eine Liste von Features:

Here is an overview about the capabilities of my design:

Hardware Performance:

* Two independent input channels
* Sample rate up to 1 MSample/sec (good enough for signals up to approx. 150 kHz)
* Analog bandwidth approx. 400 kHz
* Input impedance > 100 kOhm
* Sensitivity from 20mV/div to 1V/div (20 vertical divisions).
* Vertical offset 0 - 20 divisions (except for 0 - 12 divisions in 1V/div range)
* Record length 256 samples per channel
* Trigger on CH1 (rising or falling edge, selectable) or autotrigger
* Connects to PC through serial port (RS-232) or USB
* Power supply from a generic wall-wart type supply (9 - 15 V DC)
* Compact and lightweight (about the size of a DVD box)

PC-based Scope Software:

* Runs on Windows 95, 98, 2000, XP, Vista
* Fully graphical interface.
* All settings (timebase, vertical resolution, trigger) are controlled from the PC.
* Screen update rate up to 7 frames/sec (mostly limited by scope hardware; will improve with future

versions of the hardware)

* Real-time Fourier transform (frequency spectrum display)
* Real-time averaging
* Waveform measurements using cursors
* Waveform export to Excel etc. (.CSV file format)

Construction:

* All components easily available and inexpensive. About half of the chips can be obtained as free

samples from the manufacturer.

* Total parts cost approx. US$60 for minimal version (bare board, i.e. no enclosure).
* Through-hole and DIP packages only - easy to assemble and solder.
* Can be built up on a breadboard or a protoboard (but I'd recommend the "real" printed circuit board

to minimize work and possibility for mistakes).

* No adjustments or trimmings necessary whatsoever - put it together and use it right away! Thus

very beginner-friendly.

* No separate programmer needed for the microcontroller (Picaxe 28X1) - the cable already used for

PC connection is all that is needed. Programming software is freely available as well.

* Fits in a robust standard enclosure
* Accepts standard 1:1 probes, BNC cables, or grabber cables.

== Hardware ==

A detailed description of the scope hardware (and how to build your own is here):

http://www.pdamusician.com/lcscope/design.html

== Downloads ==

Scope homepage: http://www.pdamusician.com/lcscope/index.html
Hardware: http://www.pdamusician.com/lcscope/design.html
Schematic: http://www.pdamusician.com/lcscope/design_download.html
Layout: http://www.pdamusician.com/lcscope/design_download.html
Bill of materials: http://www.pdamusician.com/lcscope/design_download.html
Download of firmware and PC software: http://www.pdamusician.com/lcscope/design_download.html

== Siehe auch ==

Article on Instructables:

http://www.instructables.com/id/LCS_1M_A_Full_Featured_Low_Cost_Hobby_Oscillosc/