MCP9808 temp sensor

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!
Example config
Example config
mcp9808:
- id: temp
address: 0x18
update_interval: 60s
Configuration variables:
- id (Optional, string, default: Address of I2C device) - uniquely identifies this device in MQTT and Home Assistant
- address (Required, string) - I2C address of the device
- update_interval (Optional, timeperiod, default: 60 seconds) - how often this sensor should update