Stap 1: onderdelen
1. Atmega328
2. de Arduino Uno
3. schakelaar x1
4. kristal Oscillator x1
5. 10uf condensator x2
6. BC547 npn transistor x4
7. weerstand van 1k x5
8. weerstand 100 x8
9. PCB x1
10. LM7805 5 volt regulator
11. LM7812 12 volt regulator
12. condensator 22uf x2
13. zonne-Pannel 20v
14. koellichaam x1
15. draden
16. GSM modem 800H of 900A