open source o'scope - Page 1
Forum section: electronics / general

author: anissk45
author_rank: Newbie
timestamp: April 16, 2013, 08:29:30 pm
content: i am planing to build a scope, and i want to know from you guys what do you think of this project:http://www.x-io.co.uk/daq32/

author: c4757p
author_rank: Super Contributor
timestamp: April 16, 2013, 08:36:11 pm
content: Cool, but at 32kHz/nchit's not an oscilloscope, it's a DAQ.

author: anissk45
author_rank: Newbie
timestamp: April 16, 2013, 08:37:49 pm
content: what is the diffrence??

author: c4757p
author_rank: Super Contributor
timestamp: April 16, 2013, 08:47:14 pm
content: An oscilloscope should be able to show a waveform.Oscilloscope -Oscillator. With a 32 kHzmaximumsample rate (and down to 16 kHz with just one extra channel), the highest frequency wave you'll be able to show is around 1 kHz if you want any meaningful information about the shape of the wave. Almost everything you'll ever look at on an oscilloscope is well above 1 kHz.A DAQ is for long data captures with long time intervals - logging voltages, etc.

author: anissk45
author_rank: Newbie
timestamp: April 16, 2013, 08:49:49 pm
content: okay...so is there any cheap oscilloscope project out there?

author: c4757p
author_rank: Super Contributor
timestamp: April 16, 2013, 08:58:58 pm
content: Cheap? Plenty. But they're all useless. It's just not possible to make a useful oscilloscope for under $250 or so, and even then you'rereallypushing it.

author: tom66
author_rank: Super Contributor
timestamp: April 16, 2013, 09:09:42 pm
content: If you want a USB scope, there are projects like this:-http://www.amazon.com/100MS-Based-Digital-Storage-Oscilloscope/dp/B002Z34QUABut they're not very powerful... only 100MS/s limits you to around 10MHz bandwidth.DSO Quad has 72MS/s...http://www.seeedstudio.com/depot/dso-quad-aluminium-alloy-black-p-1034.html?cPath=174

author: anissk45
author_rank: Newbie
timestamp: April 16, 2013, 09:30:57 pm
content: i give up i will wait to be richer to buy one. thanks to everybody.

author: Resistoid
author_rank: Contributor
timestamp: April 16, 2013, 09:49:56 pm
content: Quote from: anissk45 on April 16, 2013, 08:49:49 pmI have no real idea whether this is cheap or even whether it is still available:"How to Build Your Own Solid State Oscilloscope", by F.G. Rayer, Bernard Babani (publishing) Ltd, 1979, reprinted 1983....In the dim and distant past, when I could not afford an oscilloscope (my pocket money would never stretch that far), I decided to build my own.I never finished the project; something must have distracted me, but I cannot recall what it was.You may wish to bear in mind that just about any secondhand 'scope you can buy on ebay will outperform this one easily. But if you are determined to build your own, maybe this book will be useful.Resistoid.

author: smashedProton
author_rank: Frequent Contributor
timestamp: April 16, 2013, 11:10:15 pm
content: Do you live in vancouver? Ill send you one!

author: c4757p
author_rank: Super Contributor
timestamp: April 16, 2013, 11:34:21 pm
content: Quote from: smashedProton on April 16, 2013, 11:10:15 pmYou know there's more than one city in Canada, right?(They have Toronto and Montreal, too.)

author: smashedProton
author_rank: Frequent Contributor
timestamp: April 16, 2013, 11:54:12 pm
content: That is why I asked the question. I live in washington state and wouldnt be willing to ship east

author: skjafar
author_rank: Contributor
timestamp: April 19, 2013, 09:21:05 pm
content: Quote from: smashedProton on April 16, 2013, 11:10:15 pmWell I am no where near Washington or Vancouver, and I wish I could make use of your generousity.