LOLIN D1 Mini V4.0.0 is the last development of the extremely successful WEMOS D1 Mini series of ESP8266 IoT modules.

Version 4 comes with an optimized circuit, the new LOLIN I2C port, and a USB-C communication and power supply connector.

LOLIN D1 Mini V4.0.0 has 11 digital input/output pins; all pins support interrupt/PWM/I2C/one-wire (except D0).

The new version 4 is compatible with MicroPythonArduino, and NodeMCU.

D1 Mini V4.0.0 Specifications

Operating/Logic Voltage 3.3V
Supply Voltage 3.3V or 5V
Digital I/O Pins 11
Analog Input Pins 1 (max. 3.2V)
Clock Speed 80/160MHz
Flash 4M Bytes
Size 34.2 x 25.6mm
Weight 3g

How to get started with D1 / D1 Mini and Micropython (external link to LOLIN website)

How to get started with D1 / D1 Mini and Arduino (external link to LOLIN website)

WEMOS / LOLIN D1 Mini V4.0.0 Schematics (PDF)

Additional information

Weight 0.01 kg
Dimensions 70 × 60 × 10 mm