D1 Mini ESP8266 WiFi Development Board
D1 Mini ESP8266 WiFi Development Board has a 5-10 day lead time before dispatch. Order will only be sent once all items are available for delivery.
D1 Mini ESP8266 WiFi Development Board
The D1 Mini is a compact WiFi development board built around the Espressif ESP8266 in an ESP-12F module. It packs a 32-bit processor, 4MB of flash and 2.4GHz WiFi onto a 34.2 x 25.6mm board, with a Micro-USB port and onboard USB-to-serial converter so you can upload code straight from your computer. It is a popular base for IoT projects such as sensor nodes, smart home devices, displays and data loggers, and it can be programmed from the Arduino IDE, MicroPython or NodeMCU.
Key Features
- ESP8266 ESP-12F module with 802.11 b/g/n WiFi (2.4GHz)
- 32-bit Tensilica L106 processor running at 80MHz or 160MHz
- 4MB SPI flash
- 11 digital I/O pins with 3.3V logic (PWM supported on all except D0)
- 1 analog input (A0, 0 to 3.2V)
- I2C, SPI and UART support
- Micro-USB port for power, programming and serial debugging
- Onboard 3.3V regulator, so it runs from 5V over USB or an external supply
- Reset button and onboard LED
- Compact 34.2 x 25.6mm footprint, breadboard friendly
- Compatible with the D1 Mini shield ecosystem
Specifications
- Module: Espressif ESP8266, ESP-12F
- Processor: Tensilica L106 32-bit RISC, 80 / 160MHz
- Memory: 4MB flash, 160KB SRAM (about 80KB available to your application)
- WiFi: 802.11 b/g/n, 2.4GHz
- Digital I/O: 11 pins, 3.3V logic
- Analog input: 1 pin (A0), 0 to 3.2V
- Interfaces: I2C, SPI, UART
- USB: Micro-USB with onboard USB-to-serial converter
- Power: 5V via USB or the 5V pin, regulated to 3.3V onboard
- Dimensions: 34.2 x 25.6mm
- Programming: Arduino IDE, MicroPython, NodeMCU
Important Notes
- The I/O pins are 3.3V only and are not 5V tolerant. Use a level shifter or voltage divider when connecting 5V signals.
- The analog input accepts 0 to 3.2V. Do not connect higher voltages directly to A0.
- D0 does not support PWM. Some pins affect boot behaviour if pulled the wrong way at startup, so check the datasheet before wiring up buttons or pull-ups.
Power Options with D1 Mini Shields
The D1 Mini works with these battery shields for portable or off-grid projects:
- D1 Mini Battery Shield V1.1 with Single DC Plug Module
- D1 Mini Battery Shield V1.1 with Single Lithium Battery Charging Module
Related Boards
Need a different size or more capability? These boards cover the same use cases:
- ESP8266 NodeMCU V3 IoT WiFi Development Board: the full-size ESP8266 board, with the same chip family and easier breadboard and header access to every pin
- D1 Mini ESP32 WiFi and Bluetooth Development Board: the same D1 Mini form factor with an ESP32 (WROOM-32), adding a dual-core processor and Bluetooth
- ESP32-S2 Mini Dev Board: a compact ESP32-S2 board with native USB support
Applications
- Smart home switches, sensors and displays
- Environment monitoring such as temperature, humidity and air quality
- Smart office and smart farming automation
- Energy monitoring and data logging
- WiFi and MQTT connected IoT nodes
Documentation
This product can be found here:
