Implements a simple light switch for an LIFX bulb.

This is not, in any way, affiliated or related to LiFi Labs, Inc. Use it at your own risk.

Senses when a capacitive button is pressed and then sends a UDP packet over the WiFi network to change the power state of a particular bulb.

The capacitive button can be as simple as a piece of metal connected to one of the "touch" pins of the ESP32.

This is structured identically to the ESP-IDF examples. Before compiling, run make menuconfig to set up the following:

• "Serial flasher config": The serial port to use for flashing.
• "WiFi Configuration": The WiFi SSID and password.
• "LIFX Configuration": The MAC address of the light bulb that should be toggled. It corresponds to the serial number of the bulb (see https://support.lifx.com/hc/en-us/articles/205947550-Will-LIFX-work-with-MAC-filtering-).

Then run make flash to install to the ESP32. Tested with an ESP32 DevKit V4 board.

Based on two examples that come with ESP-IDF (see https://docs.espressif.com/projects/esp-idf/en/latest/get-started/):

• examples/wifi/getting_started/station
• examples/peripherals/touch_pad_interrupt

All the LIFX network-related implementation is copied from https://github.com/ArquintL/lifx-c-lib, with very minor adjustments to compile on ESP32.