It is a development board with ESP8266 WiFi module loaded with NodeMCU firmware on LoLin. Since it was developed using the ESP8266 SDK, it supports GPIO, PWM, IIC, 1-Wire and ADC connections without the need for an extra microcontroller. It has an integrated CH340 USB to Serial converter. Features: ESP8266 SDK based eLua core (Lua 5.1.4) lua-cjson supported spiffs file system json, file, timer, pwm, i2c, spi, 1-wire, net, mqtt, coap, gpio, wifi, adc, uart and system api supports Product Dimensions: 2.9 x 5.7 cm
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