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This is my video on making an arduino oscilliscope. The oscilliscope was fairly inexpensive, so have fun. While it is a bit crude, it does the job. A few things to keep in mind:

1.) Use 10 uf capacitor

2.) Use an ohm range on the transistors between 100 kiliohms and 1 kiliohm. Make sure the resistors are the same.

Other than that, the video explains it pretty clearly. Here is the code, and remeber that the schematic is displayed within the video. The library is available with one of the links below.

---------------Links--------------------­--------

http://onlinetonegenerator.com/
http://playground.arduino.cc/Main/TVout
http://www.seeedstudio.com/depot/28-T...

--------------Code Link-----------------------------
https://www.dropbox.com/s/g95srczzcxh...

Check out my youtube channel (work in progress):

https://www.youtube.com/channel/UC9LRSyhMVLClWyreU...

<p>Code Link do NOT Work - give another LINK, Thanks...</p>

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