Hi
i am using a Zero2Go Omini Rev2 on Raspberry Pi 4.
When running the zero2go.sh tool the voltage reading shows input voltage readings above 100V most of the time, which isn't even supported by the Zero2Go.
This is for all 3 input channels even if they aren't connected. Actually there is only Channel C connected to a LiPo Battery Pack with around 17V. Channel A and B are not connected.
Sometimes the reading display the correct value. But only maybe 1 out of 5 times.
Please see screenshot.
This seems to be I2C communication error.
The voltage values are read from the I2C register, if for some reasons one or more bits read wrong, the value could be unreasonable like this.
I made some quick expirements and it seems that lowering the i2c frequency actually improves reliability of these readings.
I've tested with 10 kHz and 50kHz which both worked very well with about >90% correct results.
However with the default 100 kHz (that were previously used) it doesn't work that good.