QUIIC ADS1015

Qwiic System
1

I am having issues with reading multiple differential voltages through the QUIIC ADS1015 and logging the data using the DataLogger IoT - 9DoF. I cut the jumper to remove the potentiometer, but I still only get differential voltage readings through the P0 N1 terminal configuration. I’ve noticed that if I have a differential configuration of P0 N3 for one and P1 N3 for a second, I will get a reading of the difference between the two voltages in the P0 N1 spot in the datalogger and a reading of 2047 or 2048 mV in the spots that correspond to P0 N1 and P1 N3 . I saw in the hookup guide that I may need a programmable comparator, but I’m not really sure how to go about that. Any suggestions?

Also, would I be able to use all 4 differential voltage configurations at once using only one QUIIC ADS1015 unit?

2

The ADC will saturate to 2047/2048 if >2v…can you use example2 and set the gain to 1 and re-test? https://learn.sparkfun.com/tutorials/qw … o-examples

Go through the whole guide, and each example to get a better idea of how to fiddle with it…ex4 & 6 might be particularly helpful

Also note: “Depending on the settings for the multiplexer (MUX) in the ADS1015, the analog voltage readings (or conversions on the ADC) will be either for 4 single-ended inputs or 2 differential pairs.”