This is a small device to monitor my internet connection. It shows the currently used bandwidth in MB/s for the upload and download (in the sample image it's 410Kb/s uploading and nearly 18Mb/s downloading). I use it to see directly if stuff on my computer is not working as expected, because somebody is filling up our bandwith :)
At the moment I grab this data from homeassistant via api, the data itself is grabbed on my Fritz!Box. Maybe I find some time to gather the data directly from the box.
Hardware used is a 8 digit 7 segment display and a nodemcu v3 microcontroller, powered via usb.
Print all parts, then put in the hardware and close it with the backplate - it should slip into the carving.
Glue the characters for up and down on the holes in the front.
Use the "mini cover" to cover the small slot between the two 7-segment displays with some glue.