Questions about a custom-made MQTT device

Third party integrations
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1

I’m going to start a project soon that will make use of a Raspberry Pi (MQTT broker, Node Red, MySQL) and an ESP32 microcontroller. The ESP32 will communicate with the Rpi through MQTT. The Rpi will use a touchscreen, using the Node-Red Dashboard widgets.

I was just wondering if it would be possible to bridge the Rpi broker to HA, and to make use of the devices data?

2

Most certainly, using the MQTT integration you can attach to the broker and subscribe to the information from the devices: