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

Enable comment auto-refresher

Anonymous user #1

56 months ago

Score 0

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

Permalink | Reply

Anonymous user #2

38 months ago

Score 0

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

Permalink

Anonymous user #3

12 months ago

Score 0

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

Permalink

Walker

12 months ago

Score 0

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

Permalink

WEMOS ESP8266 D1 R2 V2.1

Contents

Features

Tutorials

Specification

Document

Discription

Schematic