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D1 R2 WiFi ESP8266 Development Board for UNO IDE Programming
D1 R2 WiFi ESP8266 Development Board for UNO IDE Programming
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$4.99 USD
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The D1 R2 WiFi Development Board
Discover the D1 R2, a compact and versatile mini WiFi board powered by the ESP-8266EX chip. Perfect for your electronics and IoT projects.
Key Features:
- Versatile Digital I/O: 11 digital input/output pins with full support for interrupt, PWM, I2C, and one-wire (except D0).
- Analog Input: 1 analog input pin with a maximum input of 3.3V.
- Connectivity: Comes with a Micro USB connection for easy interfacing.
- Power Options: Features a power jack supporting 9-24V input.
- Compatibility: Works seamlessly with NodeMCU for robust project development.
Technical Specifications:
- Microcontroller: ESP-8266EX
- Operating Voltage: 3.3V
- Digital I/O Pins: 11
- Analog Input Pins: 1
- Clock Speed: 80MHz/160MHz
- Flash Memory: 4M bytes
- Dimensions: 68.6mm x 53.4mm
- Weight: 25g
Pin Mapping:
Pin | Function | ESP-8266 Pin |
---|---|---|
TX | TXD | TXD |
RX | RXD | RXD |
A0 | Analog input, max 3.3V | 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 | Ground | GND |
5V | 5V | - |
3V3 | 3.3V | 3.3V |
RST | Reset | RST |
Note: All IO pins support interrupt, PWM, I2C, and one-wire, except for D0.
Programming:
Easily program the D1 R2 using its Micro USB for automatic programming or opt for wireless programming using OTA (Over The Air).
Warnings:
- All IO operations run at 3.3V. Ensure compatibility with your components.
Package Includes:
- 1 x D1 R2 WiFi ESP8266 Development Board






