Quantity   Component name
1 × ATmega328 Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
1 × MAX7219 Interface and IO ICs / Display Interface
1 × PB86 push button Discrete Semiconductors / Diode Arrays
1 × relay 240 240VAC 10A Power Supplies / Uninterruptible Power Supplies (UPS)
1 × 7-segments 4 digit clock display
1 × Some resistors
1 × Some leds
1 × Some capacitors
1 × micro-USB plug
1 × some transistors
1 × rotary encoder with push button