Hacking a car RGB LED kit (BLE master, wireless slaves). I found preset IR codes for colors/brightness but could not get smooth control.

Nexus 6P's Volume Down button had issues with some headsets. A workaround involves modifying headset resistors to match Nexus 6P's acceptable resistance range.

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.

Built a Lego car robot with my son! It's controlled via Bluetooth from a phone, using Arduino, motor drivers, and Lego. Fun project for under $20.