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WeMos D1 R2 V2.1.0 WiFi uno based ESP8266 for arduino nodemcu Compatible
Development platform based on ESP8266 chip
What's new about V2.1.0
- Use BRT (Bias Resistor Transistor), easier into flash mode.
- Optimize the circuit, the system is more stable.
About D1 R2
- based on the ESP-8266EX.
- Arduino Compatible, you can use it on Arduino IDE.
- NodeMcu Compatible
- 11 Digital I/O pins
- 1 Analog Input pin
- OTA -- Wireless Upload(Program)
- On board switching power supply -- Max 24V input, 5V 1A output
Description: An Arduino UNO Compatible wifi board based on ESP8266EX.
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 nodemcu
Technical specs
| 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 |
Pin
| 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, 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 |
All of the IO pins have interrupt/pwm/I2C/one-wire support except D0
All of the IO pins run at 3.3V.
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