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.

Teaching My 10-Year-Old Nephew Basic Electronics Through a Letter - icon
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.

A simple smart DIY AC controller to cut power bills - icon
Jul 16, 2022

Story of a light bulb

I just love seeing them glow

Story of a light bulb - icon
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.

Representing IP addresses using WS2812B - icon