I present a “BEST OF CLASS”, “Full-Featured” DIY-USB OSCILLOSCOPE which is “Truly DIY”.
My aim is to provide a cheap Digital-Storage-Oscilloscope for Students, Budding Engineers and the Hobbyist.
This USB-Oscilloscope could be part of the laboratory equipment in educational establishments.
Build this DIY-Oscilloscope for just $15
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Today 21 Nov 2014, my Instructable crossed 100000 Views!
At this Milestone I am happy to share all the source files (C, .Net & Python) at:
https://github.com/ajoyraman/USB_Matchbox_Scope
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I wish to acknowledge the inputs from the following designs which have led to this optimized solution:
DPScope SE – the simplest real oscilloscope/logic analyzer on the planet, by womai, http://www.instructables.com/id/DPScope-SE-the-si…
DPScope – Build Your Own USB/PC-Based Oscilloscope,by womai
http://www.instructables.com/id/DPScope-Build-You…
LCS-1M – A Full-Featured, Low-Cost Hobby Oscilloscope,by womai
http://www.instructables.com/id/LCS-1M-A-Full-Fea…
PC SOUND-CARD SCOPE INTERFACE FACILITATES DC RESTORATION, by me
http://www.instructables.com/id/PC-SOUND-CARD-SCO…
Universal Analog Hardware Testbench, by me
http://www.instructables.com/id/Universal-Analog-…
Analog Experiments Anywhere,by me
http://www.instructables.com/id/Analog-Experiment…
Two-Channel PC Based Oscilloscope USB, by Gaurav Chaudhary
http://www.circuitvalley.com/2011/07/two-channel-…
Responding to comments and suggestions from many members :
I am sharing the micro-controller fuse .Hex file for the dsPIC30F2020.
The Host PC software has been written in both ‘Visual Basic.Net’ and open source ‘Python’ providing a cross-platform GUI based solution for both Windows and Linux platforms.
Step 1: Specifications
Analog bandwidth (Small Signal), 12/6/7 MHz ,For Gain 1/2/5
Input impedance 1 Meg Ohm
Input connection 3 mm Audio Jack
+6.25V to – 6.25V, Gain 2
+2.50V to -2.50V, Gain 5
-6.25V to +13.75V, Gain 2
-2.50V to +17.50V, Gain 5
Sampling Rate
10bps to 500 kbps, 100ms/sample to 2uses/sample , Normal Mode
Trigger
Trigger Polarity
Trigger Range
+6.25V to – 6.25V, Gain 2
+2.50V to -2.50V, Gain 5
Display Modes
Ch1 vs. time 200 Samples
Ch2 vs. time 200 Samples
XY Ch1 + Ch2 vs. time 200 Samples each
DFT Ch1 400 Samples
DFT Ch2 400 Samples
Capture Modes
Save Modes
PC Software
Power Supply
