LED Throwies & Build Ideas
Here’s a project for fun – Magnetic LED Throwies! LED Throwies were invented in 2006 by the Grafitti Research Lab in New York City to use as non-destructive graffiti. Build one (or several) yourself right […]
Simple Steam Sensor Build & AHS01IB Absolute Humidity Sensor
Some time ago I was asked by a voracious reader to design a simple steam sensor switch for him. The purpose of the steam sensor switch was to turn on an electric switch when the […]
Mod Your Goodknight Gold Flash
I’m sure there’re a lot of electronic gadgets in your house that can be recycled. The good news is most of them can be used again or for another purpose. So, don’t just throw those […]
Arduino Traffic Lights (v2) – Crosswalk Button
I finally got around to testing this concept – adding a crosswalk button to the previously published Arduino Traffic Lights project I must admit, I was surprised to find a compact traffic light controller module […]
Pool LED Lamps & Idea Sparks
Recently while searching for little floating toys, I came across some inexpensive Chinese LED pool lamps. Most sellers described them as water-activated lotus/lily LED flower lamps. Out of curiosity, I purchased a few of them […]
Little Light Sensor Switch OPT101
Some time ago my neighbor asked me to design a better light sensor module. In fact, he already has a few small light sensor modules to automatically control the lights in his barn. Those cheap […]
Solar LED Lantern Torch – Quick Teardown
Have you ever wondered what’s inside this cheap Chinese Solar LED Lantern Torch? Although it appears like a safe and beautiful emergency lamp, be aware that it has the potential to kill you through its […]
Funny TV Faker (v1)
The Funny TV Faker project presented here is in fact a portable TV Light Simulator. A commercial television light simulator device has a bunch of flashing and flickering lamps to simulate the light of a […]
Economic Ear Scout v1
Nostalgia is often caused by something that reminds you of a happy time. Is it not so? Oh, I’m not into nostalgia, but looking back to find some wonders from the past. So, let me […]
KA2284 LED Level Meter v1
It’s not always necessary to have a costly microcontroller to make a fancy sound level meter or battery level meter. Of course, there’re still a lot of old ways to try those ideas. A good […]