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1 Post authored by: vaupell

My DIY Oscilloscope, how i got my signal

 

Content :

- Description

- Screenshots

- Video

- Credits and links

 

Descriptions

 

I am experimenting with RF and IR signals in various frequencies and had some trouble with the receivers and needed to see what kind of signal i was receiving.

I cannot afford a real oscilloscope but i knew about the older Arduino oscilloscopes.

 

After trying many different versions of code and tutorials, I was unable to get a single one to work, and all the tutorials and guides around was 2-3 years old.
Not sure if it is the IDE or the actual hardware that has changed in such a way that it didn't work anymore.

 

I finally found a working oscilloscope from a Japanese website, (linked below) and a working TFT screen library,

meaning i could read the various signals received.

 

Clearly the limitations are 0-5v but that is fine, what i needed to know is either wave type and frequency, and this is sufficient.
It also gives me an indication of the amplitude which is just a nice bonus.

 

But what I'm most happy with, is the two channel feature, i often use the second channel as a reference point to be able to

differentiate the main channel on the screen.

 

 

Some screenshots..

2014-12-15 13.28.20.jpgThis is the .96" OLD test, single wave test

 

 

 

2014-12-19 16.22.48.jpg2014-12-19 19.14.29.jpg2014-12-19 16.20.02.jpg

2.4" TFT screen on the Uno,    two right images same screen on a Mega.

 

 

A youTube vidoe i made on the experience.

 

 

 

Credits and Links :

 

My compilation of the Oscilloscope and TFT library  ( what you see on the video and images ) :

https://dl.dropboxusercontent.com/u/19761809/arduino/Vaupell-Oscilloscope.zip

 

 

Original Oscilloscope link (code by : Noriaki Mitsunaga ) :

http://n.mtng.org/ele/arduino/oscillo-j.html

 

 

Original TFT display link ( TFT shield library source ) :

http://www.smokeandwires.co.nz/blog/a-2-4-tft-touchscreen-shield-for-arduino/

 

TFT library :

Library : https://github.com/Smoke-And-Wires/TFT-Shield-Example-Code