Each ESP01 board has a preprogrammed color that defines the person. Each board needs to be preprogrammed with the color you want it to send to other devices. When you sit next to another person, that person's board will fade with the color of your board, and your board will fade with the color of the other person.
The values from the array define the PWM values for R, G, and B channels, and last it defines the fade effect speed:
const int personValues[] = { 255, 100, 0, 30 };The board is prepared to be used with common anode RGB LEDs, if you're willing to use common cathode LEDs, just comment out the following definition:
#define COMMON_ANODEThe code is prepared to be debugged with an ESP8266 board that already has a USB port, just comment out the following definitions:
#define ESP01
#define DEBUGMind that on the ESP01 board, the RX and TX pins are used as GPIO outputs to drive the led so it's mandatory to comment out the DEBUG define to get the three outputs working.
The pinout arrangement was done in a way that simplifies the wiring procedure. Both boards are glued together near their pin holes, the battery is glued back on both boards and the RGB LED sits over the ESP01 board, pointing to the WiFi antenna.
The case is a pentagon in form of a jewel, the top part stores the boards, led, and battery and the bottom one is just a cap to make it look nice.
