ESP32 Pomodoro timer Needed Hardware ESP32 C3 Super Mini 3€ On/Off Switch 40ct Screws + Insert 30ct TZT OLES IIC 0.96" 2€ Loading board 5V Lithium Battery 1.8€ Tactile Push Button 10ct 5V step up Wiring Diagram Resources ESP32 Super Mini Pinout YouTube Video Thingiverse Files Image2Cpp converter Channel