WEMOS ESP8266 D1 R2 V2.1

WEMOS ESP8266 D1 R2 V2.1

WEMOS ESP8266 D1 R2 V2.1

WEMOS ESP8266 D1 R2 V2.1

Features

• 11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire supported(except for D0)
• 1 analog input(3.2V max input)
• Micro USB connection
• Power jack, 9-24V power input.
• Compatible with Arduino
• Compatible with nodemcuFeatures

Tutorials

• Get started in Arduino
• Get started in NodeMCU
• Tutorial - Returning a Wemos D1 Mini to Factory Firmware (AT)

Specification

• Microcontroller: ESP-8266EX
• Operating Voltage: 3.3V
• Digital I/O Pins:11
• Analog Input Pins:1(Max input: 3.2V)
• Clock Speed: 80MHz/160MHz
• Flash: 4M bytes
• Length: 68.6mm
• Width: 53.4mm
• Weight: 25g

Document

• Schematic V2.0.0 (D1 R2) :File:D1 v2.0.0.pdf
• Use Manual]

Discription

Schematic

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Anonymous user #1

56 months ago

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I have 3 boards. Connected to USB all of them work as expected.

power supply via the 9-24VDC Power jack doesn't work. The circuit U2 generates only a voltage of 3.7V (5V expected) regardless of the input voltage. with this low voltage, the ESP only gets 2.6V

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Anonymous user #2

38 months ago

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uh...the ESP operates at 3.3 volts. if the onboard regulator is not operating at 3.3 volts, it's fried.

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Anonymous user #3

11 months ago

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The SDA616 voltage regulator is rated at 3.3V to 16V input - if you've given it 24V then it's toast...

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Walker

11 months ago

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Hello, we are no longer selling this product, but we would like to remind you that 9-24V power input. Please pay attention to the voltage setting, otherwise the board may burn out

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