Hello Maybe it will help someone. I lost a lot of time trying to connect 1-wire to Cubieboard2 via DVK 522 (it has DS18B20 connection on PB10 /gpio 66/ with external pullup). I've done steps in http://linux-sunxi.org/1-Wire     with different combination and it doesn't work. In /sys/bus/w1/devices i had only sth like 00-80... 00-40... 00-c00.. without w1_slave file (i was 100% sure of hardware - it works on waveshare debian image)   SOLUTION: