Cyton board programming for additional analog input
Hi everyone,
I want to record a signal using the aux pin on the Cyton board. The frequency of the signal is around 100hz, and the amplitude is smaller then 1V. I also want the accuracy be better than 0.01V, is that achievable?
I have read the tutorial but I'm not sure how exactly I should do... Sorry I'm really bad at programming... https://docs.openbci.com/Cyton/CytonProgram/
Comments
Hi Ruabbita,
The PIC32 ADC's are 10 bits resolution and that value codes the voltage from 0V (0 value) to 3.3V (1023 value).
3.3V / 1024 resolution = 3.22 millivolts per count = .003226 V per count
Note your 1V signal needs to be above 0V at all times, both positive and negative halves of the cycle. Turn on the "Analog Read" Widget to replace the default Accelerometer values with the ADC values.
https://docs.openbci.com/Cyton/CytonExternal/#programmatically-setting-board-mode
Regards, William
https://openbci.com/forum/index.php?p=/discussion/2703/sending-cyton-sdk-commands-with-brainflow-resolved
thank you!!!