Quantity   Component name
1 × Atmega328P-PU Arduino compatible Microcontroller
1 × DS1307+ DIP Real Time Clock
1 × Tactile momentary button
1 × DS32KHZ DIP TCXO 32.768kHz Crystal
1 × MAX7219 Interface and IO ICs / Display Interface
1 × LM7805 Power Management ICs / Linear Voltage Regulators and LDOs
1 × CR2032 coin cell holder Removed from a dead PlayStation 2
6 × Red 1" Common Cathode 7 segment display
1 × Light dependant resistor
1 × Western Digital external hard drive enclosure
1 × HC-05 Bluetooth Serial Module