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3Pcs D1 R2 WiFi ESP8266 Development Board Compatible UNO Program

The D1 R2 is a mini wifi board based on ESP-8266EX. 11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire supported(except D0)1 analog input(3.3V max input)A Micro USB connectionA power jack, 9-24V power input.Compatible withCompatible with nodemcu Getting StartedGetting StartedNodeMcuGetting Started Technical specs: MicrocontrollerESP-8266EXOperating Voltage3.3VDigital I/O Pins11Analog Input Pins1Clock Speed80MHz/160MHzFLash4M bytesLength68.6mmWidth53.4mmWeight25g PinFunctionESP-8266 PinTXTXDTXDRXRXDRXDA0Analog input, max 3.3V inputA0D0IOGPIO16D1IO, SCLGPIO5D2IO, SDAGPIO4D3IO,Pull-upGPIO0D4IO,pull-up, BUILTIN_LEDGPIO2D5IO, SCKGPIO14D6IO, MISOGPIO12D7IO, MOSIGPIO13D8IO,pull-down, SSGPIO15GGoundGND5V5V-3V33.3V3.3VRSTResetRST*All IO have interrupt/pwm/I2C/one-wire supported…

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