Smart home concept
Quickly step by step
Controller WeMos D1 mini controller Installing the firmware WiFi connection Router Choosing a router Setting up Mikrotik Connecting to the server Activating API access Smart home server Local server Cloud server
Registering the controller Backup Project Adding a controller

WeMos D1 mini controller

The WeMos D1 mini controller is based on the ESP8266 chip. It has 4MB of memory for the regular model and 16MB for the WeMos D1 mini Pro.

To download the firmware, simply connect it to the computer via a micro-USB cable. Sometimes you need to install a driver depending on which chip is installed CP2104 or CH340g. There is no need to clamp or close any contacts.

The board has a built-in LED on GPIO2 and a Reset button. The following features can be noted:

  • GPIO0 - not normally used, should be high when enabled
  • GPIO1 and GPIO3 - we usually use for I2C bus
  • GPIO2 - used to control the built-in LED
  • GPIO17 - ADC input with normalization (maximum voltage up to 3.3V)
  • GPIO16 - Cannot be used for interrupts
  • GPIO15 - usually used to supply power to sensors (if required), should be low when enabled


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