LOLIN(WEMOS) D1 R2 & mini Development Board
Code name: ESP8266_WEMOS_D1MINI
LOLIN(WEMOS) D1 R2 & mini development board is based on esp8266 microcontroller and uses Xtensa LX106 architecture. This board has a maximum CPU frequency of 160 MHz and a flash size of 4 MB.
About LOLIN(WEMOS) D1 R2 & mini
Compact and full-size ESP8266 dev boards - perfect for IoT projects using Arduino-style pins.
Where to Buy LOLIN(WEMOS) D1 R2 & mini
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LOLIN(WEMOS) D1 R2 & mini Technical Specifications
🛰️ Connectivity
🧠 Microcontroller
LOLIN(WEMOS) D1 R2 & mini Pinout
The pinout diagram for this ESP32-based module highlights its versatility and ease of use for IoT and embedded projects. The module includes a RST pin for resetting the board, which is crucial for debugging and testing. On the power side, the board provides a 3.3V output pin and VBUS for powering external components, along with multiple GND pins to ensure proper grounding.
This pinout features a range of GPIO pins, such as GPIO16, GPIO14, GPIO15, and GPIO4, all of which are multi-functional and can be used for both digital I/O and peripheral interfacing. Communication protocols are well-supported, with dedicated pins for SPI, including SCK (GPIO14), MISO (GPIO12), and MOSI (GPIO13). These pins enable high-speed communication with external devices like sensors, displays, and storage modules.
For I2C communication, the board uses GPIO5 for SCL and GPIO4 for SDA, making it easy to connect to peripherals like temperature sensors, accelerometers, or OLED displays. A built-in LED is connected to GPIO2, allowing developers to use it for visual feedback or debugging during project development.
LOLIN(WEMOS) D1 R2 & mini Useful Links
LOLIN(WEMOS) D1 R2 & mini Pins Mapping Arduino IDE
Below you can find the LOLIN(WEMOS) D1 R2 & mini pinout. This development board provides digital IO pins, out of which can be used as external interrupt pins and as analog input pins .
| Pin | Analog | Touch | PWM | Other |
|---|---|---|---|---|
| 0 | ||||
| 1 | TX | |||
| 2 | LED_BUILTIN | |||
| 3 | RX | |||
| 4 | ||||
| 5 | ||||
| 12 | ||||
| 13 | ||||
| 14 | ||||
| 15 | ||||
| 16 | ||||
| PIN_WIRE_SDA | SDA | |||
| PIN_WIRE_SCL | SCL |
Default Tools for LOLIN(WEMOS) D1 R2 & mini
| Uploader tool | esptool |
| Flash mode | dio |
| Maximum data size |
80 Kb
(81920 B)
|
The LOLIN(WEMOS) D1 R2 & mini development board by default uses esptool uploader tool, network uploader tool for Over-the-air (OTA) uploads and bootloader tool. The bootloader starts at address "". Flash mode and boot mode for LOLIN(WEMOS) D1 R2 & mini development board by default is dio and respectively.
