Raspberry Pi used
Device Tree for deciding which kernel modules should be loaded. This makes most instructables on the Internet outdated.
I wanted to connect
DS18B20 thermometer using only two wires. This circut use
1-wire protocol to communicate, so it has to be connected with three
lines for normal operation:
But there is an option to connect a device in so-called
parasitic mode, which requires only two lines:
GND. But it will not probably work
unless you set a pullup option for
It worked for me like a charm.