This project is a remote control for WiFi-based home automation systems. It is based on a Wemos D1 mini which is connected to 10 push buttons and a mode button via a GPIO extender. These buttons can be programmable to control smart devices in your home. Together with the I2C connector for a display it can be used for versatile home automation tasks. The design of the PCB allows also to add a battery shield and battery for the Wemos D1 mini, either below the PCB or above the microcontroller. In order to make the design flexible I added breakout pins for the remaining GPIO ports of the extender as well as for the remaining free GPIO pins of the Wemos D1 mini. The latter are also equipped with jumpers to control the input voltage for devices connected between 5v and 3v3. A sample firmware - which I created to run the remote control at home can be found here: https://github.com/chof747/remote-control It features: - A remote control mode using MQTT messages to talk to a home automation server - A sensor reading mode which can read environment sensor values via http calls and displays them on the attached oled - A mode to control the battery power - A firmware mode which provides device information and enables OTA updates