Fresh Flashed the latest up to date Rasparian image fully updated…
I have been trying to get DS18B20 working on Pi0w GPIO but missing out something… I have extensive experience and success with single and multiple DS18B20 that I find work very well on any version of Pi hardware. I can make it work on Pi B, B+ new Pi A Pi 3 and 3B+
I can swap the same ciruit(s) and uSD card between almost all these above models but = NO-GO on a few Pi0w I have here. Works fine and ‘Auto Installs Widget’ brilliantly as ever when uSD and Circuit moved to any other Pi.
I may yet have missed something basic / electrical but wonder if anyone else is having issues or managed to get DS18B20 working on the GPIO pins of these cute little Pi. They are Great ! Multi industrial DS18B20 1w 1m and 3m leaded probes + a Pi zero with wifi makes this a very nice project for school classrooms etc.
I am using up a bin of old Pi B and USB dongles for now
Will update this if the obvious becomes visible…
( Yes the 4k7 resistor is there )