Hey everyone. A few weeks ago, I got my Atlas Scientific pH sensor running on FTDI. I thought I’d add a temp sensor the same way for some added data. I followed the same process as the pH, but I cannot get a reading from the probe.
It goes PT-1000 → USB board and EVO Temp → Pi
Do I need to change something for it to read from 2 USB ports at once? Or have I tried an illegal move?
Are they both being properly detected and initialized (see dmesg)?
Are both devices appearing under /dev as independent devices?
Does swapping the FTDI hardware change anything?
Does each work when each is the only thing connected?
Okay, I see now. This is using the FTDI detection code from Atlas Scientific. Is the device typical of what you would expect the device to be? Regardless of what that returns, you should not rely solely on that to diagnose your issue. I’ve provided several recommendations to test the device(s).
Also, have you tested the device in I2C mode? Also try factory resetting the sensor.