Quantity   Component name
1 × Arduino Mega 2560
1 × Adafruit Micro-SD breakout
1 × Micro-SD card
1 × Power supply at 5V 1-2A (for relays)
1 × Power supply at 12V 1-2A (for microcontroller)
5 × 5V DC - 220V 6A AC Relays + rectifier diodes (flywheel diodes)
5 × NPN transistors + 1K ohm resistors
5 × Optocouplers / optrons LTV817 (Uis=5kV 35V 50mA >50% DIP4) + 220ohm resistors
1 × Temperature sensors DS18B20 + 4.7K ohm resistor Optional
1 × RTC - DS1307 Real Time Clock breakout board Optional
1 × Dotted PCB soldering plate