Arduino Analog Sensor – Read & Display
Arduino provides a number of analog inputs which enables us to measure parameters such as voltage, current, resistance, light, temperature, and so on in the analog arena. In this post, we’ll look at how to […]
20mm LDR & Raspberry Pi Pico – Quick Guide
In this tutorial, we will learn how to interface a big photoresistor with Raspberry Pi Pico. Since the Raspberry Pi Pico microcontroller provides analog ports, we can easily do a number of projects using common […]
Laser Monkey Scarer v1
There has been a drastic and steep increase in the number of monkeys coming into my backyard over the last few months. Below you can see a shot taken by my surveillance camera. So, naturally […]
Pro Mini Beacon Light
This is an updated version of an old project that was published in EFY Magazine (print) 21 years ago! Now you can see that article here https://www.electronicsforu.com/electronics-projects/solidstate-signal-lamp This time I’m using a minuscule microcontroller to […]
Arduino Optical/Light Theremin – Make it Yourself!
The theremin is an electronic musical instrument with two metal rods (antennas) used to control pitch and amplitude by the human operator using hand gestures. The left rod (a horizontal hoop) reduces the amplitude as […]
Toy Car Signal Light & Siren
This post showcases an example project I made to help you add a terrific signal light and siren to almost all toy cars. As we all know, cheap remote control (radio control) toy cars (R/C […]
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 […]
Raspberry Pi Pico & Little Light Stick (v1)
A couple of months after its release, ultimately, I got a hand on the Raspberry Pi Pico, and posted a few hobby projects here. The RPi Pico is a microcontroller board centered on the RP2040 which’s […]
Raspberry Pi Pico – Light & Sound Maker!
This title is a bit exaggerated, I agree, but the following writeup is actually about controlling LEDs and Buzzers using Raspberry Pi Pico. At first, this may seem like a simple topic, but here you […]
Quick OLED Thermometer v1
After getting my new soldering iron tip thermometer, I got inspired by that idea and decided to design a quick digital thermometer for general use. By the way, the soldering iron tip thermometer is an […]