I2C on my Pi(s) is not detecting any slave.
I am obviously missing something here, the PI's I2C is "working" but do not detect the device. I did (and redid) everytghing suggested by Sirajo on I2C not detecting ? issues in hardware or any other?
The I2C devices tested are : NCD9830(chip only) ; HT16K33(adafruit) ; LCD with PCF8574.
The hardware has been verified ; The i2c lines has been probed in order to verify if pull-up "hold the line too hard" and I do get nice square signal.
Nothing is ever showing up. If I ask ...
$ ls /dev/*i2c*
I get ...
/dev/i2c-1
therefore the i2c1 is active
If I ask ...
$ sudo i2cdetect -y -1
I do get the table but NO I2C address showing up.
What is the missing part ?