TTGO ESP32 Dev Module WiFi + bluetooth 4MB Flash Development Board LILYGO for Arduino - products that work with official

Power Pins GND this is the common ground for all power and logicBAT this is the positive voltage to from the JST jack for the optional Lipoly batteryUSB this is the positive voltage to from the micro USB jack if connectedEN this is the 3 3V regulators enable pin Its pulled up so connect to ground to disable the 3 3V regulator3V this is the output from the 3 3V regulator The regulator can supply 500mA peak but half of that is drawn by the ESP32 and its a fairly power hungry chip So if you need a ton of power for stuff like LEDs motors etc Use the USB or BAT pins and an additional regulator Logic pins This is the general purpose I O pin set for the microcontroller All logic is 3 3VThe ESP32 runs on 3 3V power and logic and unless otherwise specified GPIO pins are not 5V safe Serial pins RX and TX are the additional Serial1 pins and are not connected to the USB Serial converter That means you can use them to connect to UART devices like GPSs fingerprint sensors etc The TX pin is the output from the module The RX pin is the input into the module Both are 3 3V logic I2CSPI pins You can use the ESP32 to control I2C and SPI devices sensors outputs etc If using with the standard Wire and SPI devices work as youd expect Note that the I2C pins do not have pullup resistors already You must add them if you want to communicate with an I2C device GPIOAnalog Pins There are tons of GPIO and analog inputs available to you for connecting LEDs button