New to ESPHOME - first use of ESP32 for QINGPING motion sensors

ESPHome
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Following the following blog:

How to connect just about any Xiaomi BLE device to ESPHome using custom components

I realise I don’t fully understand how to use the ESP32 here. I can see examples of the yaml code at https://github.com/dentra/esphome-components/tree/master/components/miot_cgpr1 but should I be loading some code onto the ESP32 first and how does ESPHome tie it all together?

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Usual thing with me, posted this and got my head around it 5 minutes after. The issue was I had used arduino for another esp32 switchbot implementation and thought I would need to use arduino again.