There's a tutorial how to build the device that monitors the onset of sleep ("Dormio", version 3"): https://makezine.com/projects/dormio-dream-incubator/ https

There's a tutorial how to build the device that monitors the onset of sleep ("Dormio", version 3"): https://makezine.com/projects/dormio-dream-incubator/ https://makezine.com/projects/dormio-dream-incubator/ And here I think I dug up the details and schematics of the Dormio hardware prototype: https://web.archive.org/web/20221007074902/https://www.fab.cba.mit.edu/classes/863.17/CBA/people/tomasero/index.html https://web.archive.org/web/20221007074902/https://www.fab.c...