Project 40:
AVR or ESP32-C3 LED Tubes

AVR v1.1: Schematic, Board Layout, PCB Top, Demonstration

AVR v1.1 Bill of Materials

ESP32 v1.0: Schematic, Board Layout, PCB Top, Demonstration

ESP32 v1.0 Bill of Materials

PCBs have been fabbed. The AVR-based one is populated and tested on the top row.

Overview:

This design contains either an AVR (Arduino UNO-compatible) or ESP32 microcontroller that displays date & time and temperature& humidity on 4-digit 7-segment LED modules or "tubes".

AVR Components:

v1.0: Adafruit Metro Mini 328 v2 with AliExpress_4-digit_7-segment_LED_Module

ESP32 Components:

v1.0: Adafruit ESP32-C3 QTPY with AliExpress_4-digit_7-segment_LED_Module

AVR Arduino Code:  TM1637_4x7-segment_AHT10-RTC-PIR.ino

ESP32 Arduino Code:  TM1637_4x7-segment_AHT10-RTC-PIR__QTPY.ino