electronic modules
QTR-8RC Reflectance Sensor Array | A Beginner’s Guide
Want your robot to “see” a line without using a camera or heavy image processing? The QTR-8RC Reflectance Sensor Array gives you eight reflectance…
arduino
Fingerprint Sensor AS608 | A Beginner’s Guide
One touch can replace keys. This project uses an optical fingerprint sensor to enroll users and then grant access with a quick scan. When…
arduino
Thumb Joystick | A Beginner’s Guide
Ever wished your Arduino could “talk back” when you move a joystick? In this tutorial, you will build a clean direction viewer that prints…
arduino
Motor Drive (BTS7960 43A) | A Beginner’s Guide
Don’t wait until your full project is done to find out your BTS7960 43A motor driver has a problem. A fast bench test can…
programming
Raspberry Pi Pico (RP2040) | A Beginner’s Guide
If you’re coming from Arduino Uno, the Raspberry Pi Pico can feel confusing at first—especially when it doesn’t immediately show a COM port. Sometimes…
esp32
External LED via Wi-Fi | ESP32 Mini Guide
Tap a button on your phone and watch an LED light up across the room. This External LED via Wi-Fi turns an ESP32 into…
electronic modules
3D Mini Water Dispenser | Circuit Easy Build
Bring the faucet to your desk. If the shared dispenser is a walk away, this pocket-size 3D Mini Water Dispenser puts a spout right…
arduino
Arduino LED Matrix | A Beginner’s Guide
Press power, watch color happen. This beginner-friendly project drives a 64-pixel (8×8) NeoPixel matrix from an Arduino and paints it with a smooth, rotating…
arduino
3D DIY Soundbox | Arduino Project Idea
Boot. Play. Sing. As soon as you power on, the 3D DIY Soundbox. There is no phone, no pairing, and no app—just instant music…
arduino
Arduino Analog Multiplexer | A Begginner’s Guide
Running out of pins? Imagine reading 16 sensors with only one Arduino input. That’s what the HP4067 does:
arduino
3D Smart Cane | Arduino Project Idea
One step from a collision? Not today. The 3D SMART CANE “sees” ahead and warns you before the tip hits anything. A quick beep…
arduino
Touch-o-Lantern | Arduino Halloween Project Idea
One tap. A red flash. A creepy laugh. If you want a prop that makes guests jump—and then lean in for more—meet Touch o…