![]() Othersģ x 10k resistors, a 470 uf capacitor, a 100 nf capacitor, a button for reset the ESP board, some wire for connection and a key ring for hanging this on your bag. (AMS1117 is not recommended, it draws too much power while standby) PNP transistorĪny normal PNP transistor, I have some SS8550 in hand. ESP BoardĪny ESP8266 board with SPI pin out should be ok, I am using ESP-12 this time. Charge BoardĪny micro USB LiPo charge board that can compatible with your battery. In order to keep the circuit not draw over 1C current from the battery, it is recommended to choose a battery over 200 mAh. In my measure, this circuit sometime may draw over 200 mA. BatteryĪny LiPo battery a little bit smaller that the LCD should be ok. LCD DisplayĪny ili9341 LCD that can fit in the sweet box should be ok, I am using TM022HDH26 this time. Some can fit a 2.2 inch LCD and some bigger one can fit a 2.4 inch LCD with break out board. But beware it have many size, especially you bought it in different seasons and countries. Tic Tac is one of easy accessible transparent sweet box.
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