Quantity   Component name
1 × Arduino any type should work, I used a nano to save space and power, but a pro mini might be better.
1 × DHT-22 Possibly not the best temperature & humidity sensor, but it's what was available at the time.
1 × Light dependent resistor
2 × 36k resistor
4 × 10k resistor
1 × Micro SD card adapter
3 × PCB mount screw terminal block, 2 pin
1 × Step down dc-dc converter with 5v output
1 × IRL1104PBF Discrete Semiconductors / Power Transistors and MOSFETs