1 buah mini fan komputer.bole fan yang udah bisa pakai listrik AC
atau pakai fan komputer dgn AC to DC converter
beli trafo 9-12vct 0.5A, 2 bh diode in4001.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi2uWZX4qEPf4LyGTDUC-c1UCaVjuEjq_C8Mcfwl1ZtIio4tP_acb64e3b8HS41SZC2Htu1prWKyw5eR-ratmcKg67lVCo53noTrV8fCSFoHO8hEA5s6Z2OzyOm0S8-CBqE85xPYOsd1IPr/s1600/trafoct-fan-119x701.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgMAi4ivdoKac-eEe7dDRtj5OdYl3wkYKvdO0gVChdNeHdRTddaJZlbMpoVIkgiqaJO3QayUejL0Nouwt0sjjCOHNxWNLWUXYK9YUGkWfT84SzdSKAKwY8iQusoDxzKTAhvCyJPnZ0VPOew/s1600/trafo-fan-119x76.jpg)
lalu rangkai arduino nya.
logika nya :
jika suhu diatas 37,maka lampu di matikan,
jika suhu di bawah 37,maka lampu di nyalakan.