Quantity   Component name
1 × Microchip PIC16F1789 microcontroller 8-bit microcontroller
4 × Scrap Li-Ion 18650 batteries (unprotected)
1 × Li-Ion battery protection assembly from an old phone battery
1 × Li-Ion charger module 1 amp, from ebay
1 × Various cables mostly from scrapped Sony BVM
10 × RGB LED 5mm
30 × 560R resistor
1 × 330uF capacitor
1 × Tactile switch (SPST, momentary)