Multi-channel Teensy 4.* ADC capture project with high-rate USB streaming, SD logging, and Python-based capture/plot tools.

[rjsdotorg]

https://github.com/rjsdotorg/ADC

This version is up to 14 channels, and streams and/or logs data to uSD.
2 channels streams up to 1.3MHz to a laptop or SD.
Tested with Teensy 4.0, still developing

 

[Angelo]

The line 401 in main.cpp

 

[rjsdotorg]

The line 401 in main.cpp

Ha! Someone actually read it!
Gone now. Lazy way to break out.

 

[rjsdotorg]

For the couple dozen who have cloned it, you might want the update today. I tested more with one and two channels.

 

[ishotjr]

https://github.com/rjsdotorg/ADC

This version is up to 14 channels, and streams and/or logs data to uSD.
2 channels streams up to 1.3MHz to a laptop or SD.
Tested with Teensy 4.0, still developing

could you share a picture of it in action (ideally connected to something interesting!) so we can post it on the blog? thanks!

 

[rjsdotorg]

could you share a picture of it in action (ideally connected to something interesting!) so we can post it on the blog? thanks!

Sure! This is a photodiode test (the hardware is really only responsive to 100kHz) for an optical tachometer:

With data dumped to CSV:

This is the updated version with soldered-on SD holder. The 4.1 of course does not need such things.