Esp8266 Wifi Module Nodemcu V3 V2 V2.1 Lua Development Board

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Introduction esp8266 is wi-fi enabled system on chip (soc) module developed by espressif system. it is mostly used for development of iot (internet of things) embedded applications. esp8266-01 w wpa/wpa2), general-purpose input/output (16 gpio), inter-integrated circuit (i2c) serial communication protocol, analog-to-digital conversion (10-bit adc) serial peripheral interface (spi) serial communication protocol, i2s (inter-ic sound) interfaces with dma(direct memory access) (sharing pins with gpio), uart (on dedicated pins, plus a transmit-only uart can be enabled on gpio2), and pulse-width modulation (pwm). it employs a 32-bit risc cpu based on the tensilica xtensa l106 running at 80 mhz (or overclocked to 160 mhz). it has a 64 kb boot rom, 64 kb instruction ram and 96 kb data ram. external flash memory can be accessed through spi.

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