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 |
|
