An Arduino UNO Compatible wifi board based on ESP8266EX.
WeMos® D1 R2 V2.1.0 WiFi ESP8266 Development Board is programmable via Arduino IDE.
- 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 connection
- A power jack, 9-24V power input.
- Compatible witd
- Arduino
- NodeMCU
Resources
Technical specs
Microcontroller | ESP-8266EX |
Operating Voltage | 3.3V |
Digital I/O Pins | 11 |
Analog Input Pins | 1 |
Clock Speed | 80MHz/160MHz |
FLash | 4M bytes |
Lengtd | 68.6mm |
Widtd | 53.4mm |
Weight | 25g |
Pin Configuration
Pin | Function | ESP-8266 Pin |
---|---|---|
TX | TXD | TXD |
RX | RXD | RXD |
A0 | Analog input, max 3.3V input | A0 |
D0 | IO | GPIO16 |
D1 | IO, SCL | GPIO5 |
D2 | IO, SDA | GPIO4 |
D3 | IO,Pull-up | GPIO0 |
D4 | IO,pull-up, BUILTIN_LED | GPIO2 |
D5 | IO, SCK | GPIO14 |
D6 | IO, MISO | GPIO12 |
D7 | IO, MOSI | GPIO13 |
D8 | IO,pull-down, SS | GPIO15 |
G | Gound | GND |
5V | 5V | – |
3V3 | 3.3V | 3.3V |
RST | Reset | RST |
*All IO Pins have interrupt/pwm/I2C/one-wire supported (except D0)
Programming
tde WeMos D1 R2 has a micro USB for auto programming.
Also you can programming it using OTA
Warnings: All IO operates at 3.3V