Project

C++ Project to use Dual Core of the ESP32 to control led with display pattern and handle command from a Telegram Bot thanks to tasks

Create a WifiServer at 192.168.4.1 (check your esp ip addr) allowing users to enter their wifi credential and save it in ESP32 nvs. While the Wifi doesn't change, the lamp auto-connects for a simpler use. The lamp won't start since the Wifi isn't connected.

First Core handle wifi with a telegram API interface over a task and the Second Core handle the FastLED API with 60fps and some task delay (allow a delay without freezing the whole esp32 cores)

Version

0.0.1: Telegram, Task and FastLed handling, one file.
0.0.2: Refacto with class and custom libraries, allow user to enter wifi credential.

Librairies

• Arduino
• C++
• NVS
• FreeRTOS
• WifiServer - WifiSecureServer
• UniversalTelegramBot
• FastLED

Installation

As Arduino doesn't detect directory in the main directory, all the src directories must be copied to your libraries folders. While compiling, if the header files are missing, the libraries are misplaced.

Circuit Notes

Followed this best practices to mount the circuit:

• 180 ws2812b neopixel leds, last 36 leds with power reinjection. Maybe, I will reinject power in the middle of the 144 leds.
• Used a 220 Ohm resistor that I already have to connect esp32 PWM output to neopixel data input.
• 3.3V to 5V logic level converter from sparkfun (amazon: YT1076)
• About 60-80cm between the esp32 and the neopixel strips without signal loss.