Recently working on this projects.

esp2866 grill

A simple UI to control a fan in a lotus grill with an esp8266 with arduino interface. The chip creates an access point (AP) and uses a captive portal to provide easy access to the UI. UI The UI provides the following actions: Turn the fan on/off Set the speed of the fan View the connection status to the server… Read more →

X-Ring with Google Calendar

As application for the X-Ring RGB Strip I came up with the following idea: querying the next event in my Google Calendar tagged with #wecker and then visualize the remaining time. I have illustrated the structure of all components in the following figure: Google Calendar The Wemos D1 mini queries the next event by accessing my Google Calendar. This is done… Read more →

X-Ring missing documentation

I recently bought a X-Ring WS2812B RGB on There is no information about the wiring or the bus how the X-Ring is controlled. So I did a little reverse engineering and want to share the information: At first: the X-Ring is driven by a One-Wire connection. There is a switch on the top: The wiring is the following: When… Read more →