Simple Servo & LED Controller
Hopefully this short post will give you some practical pointers for making your own LED spotlights that also includes a servo actuator. There are dozens of different ways to drive standard hobby servos, and here […]
Raspberry Pi Pico Breathing LED Xmas Star
Xmas star is more than just a lovely ornament. The Xmas star is also known as the star of Bethlehem and is a major seasonal symbol throughout the globe. Well, Christmas is just around the […]
Smart Badge for Smart Kids – micro:bit fun!
Get ready to make a smart badge or a simple wearable device such as a wristband, lanyard or watch-style device for your smart kids. And, introduce your kids to electronics and microcontrollers without them even […]
Overheat Sensor Arduino Siren
Not long ago, I played around with making an overheat sensor siren on the Arduino Uno, which I later modified a bit and incorporated into another hobby electronics project. Needless to say, it worked fine. […]
BYO Muddy Water Detector
The goal of this little post is to share an idea to build your own robust mud water detector using readily available inexpensive electronics components. Although unintentional, the sensor component in this design concept is […]
LM358 Variable Threshold Solid State Switch
I think you’re all familiar with the various Chinese sensor modules based on the LM393 IC. That’s good, but at this point I’ll share the design idea of an LM358 IC based variable threshold solid […]
Chinese USB LED Lamp Quick Review & Teardown
I recently picked up a bunch of minuscule Chinese USB LED Lamps. You’ve seen these amazing gizmos before, I’m sure, under a variety of names in places ranging from local street merchants to online electronics […]
An Improved Analog Sensor Interface
A while back, I got an inquiry via email about building a simple electronics circuit to monitor the status of an analog sensor i.e., whether it is open or working properly. After a little discussion, […]
Midget USB LED Lamp – DIY
There is nothing amazing about looking at the design concept of a simple USB LED lamp, I know. But believe me, the midget USB LED lamp presented here has a little power reservoir in the […]
Webcam Servo Sweep (v1)
A few weeks ago, while working on another project, someone asked me to build a simple sweeping system for a tiny webcam. I set it aside for the next day and built a webcam servo […]