Quantity   Component name
1 × ESP8266-12E
1 × OLED SSD1306 with I2C
1 × MCP1700T 3,3V LDO
1 × Battery Charger TP4056 board
1 × LiPo 500mAh
8 × Buttons 6mm Tactile
6 × 1n4148 signal diode
1 × SMD resistors, capacitors, LEDs