Google. You need a display, an Arduino and these cheap sensors. Also, I included a case, but now I would just mill my own. ALSO, I would not use a full size arduino. I would use a tiny one: http://www.amazon.com/SainSmart-Nano-v3-0-Compatible-Arduino/dp/B00761NDHI/ref=sr_1_4?s=pc&ie=UTF8&qid=1455068962&sr=1-4&keywords=arduino+micro