This Wemos D1 R2 Uno ESP8266 WiFi Development Board is a mini wifi board based on ESPN-8266EX. Suitable for your electronic projects.
Specifications
- 1 pin Digital Input / Output (all pins have interruptions / PWM / I2C besides D0)
- Micro USB
- Compatible with Arduino
- Scheduling for USB
- Microprocessor: ESP - 8266EX
- Voltage: 3.3 V
- Nr. pin / input / output 11 pin
- One Input Pin (3.2 V max)
- Frequency: 80 MHz / 160 MHz
- Flash Memory: 4 Mb
- Dimensions: 68.6 mm x 53.4 mm
- Weight: 25 grams
- All terminal input / output operating at 3.3 V
Pine |
Function |
ESP-8266 Pin |
TX |
TXD |
TXD |
RX |
RXD |
RXD |
A0 |
Analog input, 3.3V max input |
A0 |
D0 |
IO |
GPIO16 |
D1 |
IO, SCL |
GPIO5 |
D2 |
IO, SDA |
GPIO4 |
D3 |
IO, 10k Pull-up |
GPIO0 |
D4 |
IO, 10k Pull-up, BUILTIN_LED |
GPIO2 |
D5 |
IO SCK |
GPIO14 |
D6 |
IO, MISO |
GPIO12 |
D7 |
IO, MOSI |
GPIO13 |
D8 |
IO, 10k Pull-down, SS |
GPIO15 |
G |
Ground |
GND |
5V |
5V |
- |
3V3 |
3.3V |
3.3V |
RST |
reset |
RST |
|