To enable 1hr Arduino sleep, the author leverages ESP8266's deep sleep. ESP8266's wake-up pin triggers Arduino INT0, which then resets ESP8266 for full activation.

Arduino deep sleep with WDT caused resets because `wdt_disable()` failed. The compiler was not defining the chip correctly. Learn how to solve it

A DIY car phone holder with integrated Qi wireless charging. Modified a bare board charger, trimming & painting it, then mounted it into a vent holder for easy phone charging while navigating.