WEMOS D1 R32 Development Board
Code name: D1_UNO32
WEMOS D1 R32 development board is based on esp32 microcontroller and uses xtensa architecture. This board has a maximum CPU frequency of 240 MHz and a flash size of 4MB.
About WEMOS D1 R32
Arduino Uno-compatible ESP32 board — perfect for developers transitioning from AVR to ESP.
Technical Specifications
🛰️ Connectivity
🧠 Microcontroller
✨ Features
- 40 digital IO pins
- 16 external interrupt pins
- 16 analog input pins
- 18 PWM pins
WEMOS D1 R32 Useful Links
WEMOS D1 R32 Pins Mapping Arduino IDE
Below you can find the WEMOS D1 R32 pinout. This development board provides 40 digital IO pins, out of which 16 can be used as external interrupt pins, 16 as analog input pins and 18 pins have Pulse-Width Modulation (PWM).
| Pin | Analog | Touch | PWM | Other |
|---|---|---|---|---|
| 1 | PWM | TX | ||
| 2 | A0 | PWM | LED_BUILTIN | |
| 3 | PWM | RX | ||
| 4 | A1 | PWM | ||
| 5 | PWM | SS | ||
| 12 | PWM | |||
| 13 | PWM | |||
| 14 | PWM | |||
| 16 | PWM | |||
| 17 | PWM | |||
| 18 | PWM | SCK | ||
| 19 | PWM | MISO | ||
| 21 | PWM | SDA | ||
| 22 | PWM | SCL | ||
| 23 | PWM | MOSI | ||
| 25 | PWM | |||
| 26 | PWM | |||
| 27 | PWM | |||
| 34 | A3 | |||
| 35 | A2 | |||
| 36 | A4 | |||
| 39 | A5 |
Default Tools
| Bootloader tool | esptool_py |
| Uploader tool | esptool_py |
| Network uploader tool | esp_ota |
| Bootloader address | 0x1000 |
| Flash mode | dio |
| Boot mode | dio |
| Maximum upload size | 1280 Kb (1310720 B) |
| Maximum data size | 320 Kb (327680 B) |
The WEMOS D1 R32 development board by default uses esptool_py uploader tool, esp_ota network uploader tool for Over-the-air (OTA) uploads and esptool_py bootloader tool. The bootloader starts at address "0x1000". Flash mode and boot mode for WEMOS D1 R32 development board by default is dio and dio respectively.
