I built a similar device (works more like the linked software), using illuminated buttons, and big RGB arcade button for the main action. https://doug.lon.dev/

I built a similar device (works more like the linked software), using illuminated buttons, and big RGB arcade button for the main action. https://doug.lon.dev/software/hardware/2018/06/24/the-task-switch.html https://doug.lon.dev/software/hardware/2018/06/24/the-task-s... I stopped using it about a year or so ago, I didn't feel the need to keep recording every context change, and I also never really looked at the reports or drew much of any conclusion about the data. It would be reasonably simple to use my software on the desktop, or in another device, and add countdown feature. It's all open source. In the end the device was a bit of a vehicle to learn new things; hardware development, aspects of the software and I also subsequently re-wrote the web service on AWS serverless as well.