Project 39:
ESP32 LED Dot Matrix (I2C)

v2.0: Schematic, Board Layout, PCB Top

v2.0 Bill of Materials

         Demo of Breadboard Prototype

Overview:

This PCB contains an ESP32 development unit that displays time and temperature/humidity/barometric pressure on LED dot matrix modules.

Components:

v2.0: DOIT ESP32 DevKit-C v4 with AliExpress_8x16_LED_Dot_Matrix_Module (I2C)

Arduino Code: HT16K33_Nums_X2.ino

Note: If your ESP32 ever locks up, try this code: Reset_ESP32.ino