Pin | Connect to |
5v | 5v power in from your PSU - in my case the POE dongle. |
3v3 | 3.3v power from Pi to the weather board connector JP4/3; we probably ought not use this but it seems to handle the minor power needs to the sensors ok thus far. |
Gnd | ground from the PSU/POE and to the weather board connector JP4/4 |
GPIO 2 | i2c clock, SCL on weatherboard connector JP4/1 |
GPIO 3 | i2c data, SDA on the weather board connector JP4/2 |
GPIO 20 | rain bucket 'tick' pin, connects to weather board pin JP2/2 |
GPIO26 | anemometer 'tick' pin, connects to weather board pin JP2/3 |