Quantity   Component name
1 × esp8266 ESP-12E https://www.ebay.fr/sch/i.html?_odkw=esp8266+esp-12e&_osacat=0&_from=R40&_trksid=m570.l1313&_nkw=esp8266+esp-12E&_sacat=0
1 × esp8266 ESP-12E plate (with resistors included) https://www.ebay.fr/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=esp8266+12+plate&_sacat=0
1 × LED Fiber Optics / Emitters
1 × 220 ohm resistors
1 × button
1 × AAA 2 battery holder
1 × box Frequency Control / Oscillators