Posts tagged diy
Jun 17, 2026
Teaching My 10-Year-Old Nephew Basic Electronics Through a Letter
A simple letter and a tiny RGB LED circuit I mailed to my 10-year-old nephew to introduce him to basic electronics and encourage curiosity.
Apr 21, 2026
A simple smart DIY AC controller to cut power bills
A simple ESP32-based controller that turns your AC on/off based on room temperature - saving electricity without apps, cloud, or complexity.
Feb 25, 2019
Representing IP addresses using WS2812B
I just wanted the NodeMCU to tell me the IP through some interface without needing a computer.