Hello!
I recently purchased a PR19-7 shield for my Raspberry Pi Zero W as well as a PR2C-6 gas detector.
When I connect them to my Pi, I find no visible devices on i2cdetect -y 1.
I do have some other i2c devices that I am able to test with, and when I use an Adafruit Stemma-QT shim with a GPS unit, I do see that device correctly detected on i2cdetect -y 1. Further, I tested by adding this Stemma-QT detector to the pass-through on my PR19-7 and found that when I use the pass-through no devices are detected on i2cdetect -y 1.
My belief, in particular based on the similarity to this user’s issue, is that my PR19-7 shield is defective and is corrupting everything connected to the bus.
Is that a fair assessment or is there something else I should try?
Update:
I tested it in another Raspberry Pi (B+) with the same result. i2cdetect -y 1 finds no devices.
