Technical requirements

You can find the code for this chapter in this book's GitHub repository, here: https://github.com/PacktPublishing/Internet-of-Things-with-ESP32/tree/main/ch9.

The external libraries can be found here: https://github.com/PacktPublishing/Internet-of-Things-with-ESP32/tree/main/common.

In terms of hardware, you will need the following:

• Three devkits: One for each node in the BLE mesh network
• Three LEDs: One for each node
• A relay: For the switch node
• A TLS2561 light sensor: For the light sensor node

To set up the BLE network and test the project, we will use a mobile application from Nordic Semiconductor ASA called nRF Mesh. It is available on both iOS and Android platforms.

Check out the following video to see the code in action: https://bit.ly/3yxFBae