docs/usecases/uc-1.md
# UC-1 Driving load via relay
![Direct relay connection](relay_bb.png)
## Configuration
```ini
[mqtt]
host = tcp://127.0.0.1:1883
[switch:0]
name = Relay
topic = home/relay/0
pin = GPIO23
```
> Relay by [arduinomodules](https://arduinomodules.info/ky-019-5v-relay-module/)\
> Bulb by [alfreddagenais](https://github.com/alfreddagenais/fritzing-components/)