One of temperature sensors used in relay boards. You can have the other one mounted, so first check what hardware you have! Only one MCP9808 is supported right now.
You need to know I2C address of device you want to connect to!
mcp9808: - id: temp address: 0x18 update_interval: 60s filters: - round: 2 - offset: 5
°C) - unit of measurement of the sensor. This does not make any math to switch between units!
- round: 2) - filter list. See Filters to learn more.