Wemos D1 Mini ESP8266 Board. Using Arduino Microcontrollers. INTP October 9, 2016, 2:56pm 1. After one of these died on me, I am looking for a definite answer on whether the GPIO pins are 5V tolerant or not. The ESP8266 onboard is a 3.3v device, but the Wemos board has a 5V pin and a micro USB plug (and therefore voltage regulation on the board). The awkwardly-named "WeMos D1 ESP-12F ESP8266 Motherboard Module with 0.96 inch OLED Screen" is an $11 development board that contains an ESP8266 Wifi board, a screen, a 5-postion switch, an 18650 Li-ion battery holder and charging circuit with protection, a usb power socket, switch, and serial programming setup. Again, the docs will assist you here but basically you just go to setting > Devices & Integration > add integration > ESPhome > enter the fixed IP address for the D1 mini that you programmed it with. Then you can create HA automations to have the P.E. Beam trigger whatever you want in HA. next page →. Wemos D1 Mini; TP4056 module with “discharge protection”, most modules with more than one chip has this, but be careful! Lithium-Ion battery, e.g. a 18650 cell, and probably a holder for the battery; What you don’t want is anything resembling a power bank or battery shield with a regulated output (5V or 3V). These are practically useless . Note . Don't forget to change PORT_NAME and FIRMWARE.bin. . In Linux, PORT_NAME is like /dev/ttyUSB0. In windows, PORT_NAME is like COM4. 3. While this board (listed on ebay as D1 Mini NodeMcu Lua WIFI ESP-12F ESP8266 WeMos 4M Bytes Development Board Kit) was powered by usb, I accidentially shorted between the gnd (G) and 5v pins on the left, and some magical smoke escaped. I can no longer power the device from usb, but it works nicely if I supply it with the right voltage on QkKCR.

wemos d1 mini power requirements