Latest Project

Building a Photoelectric Sensor-Controlled AC Timer Circuit Using a 24V DC Relay

Building a Photoelectric Sensor-Controlled AC Timer Circuit Using a 24V DC Relay

Learn how to interface a 24V DC photoelectric sensor with an AC timer relay using an interposing relay in this practical industrial automation project.

July 21, 2026 by Bob Odhiambo

 The Technology Behind Illuminated Custom 3D Signs: From CAD Design to a Finished Display

The Technology Behind Illuminated Custom 3D Signs: From CAD Design to a Finished Display

A great illuminated sign is built long before the LEDs are switched on and It starts with a well-planned 3D model lighting layout that delivers smooth.

July 20, 2026 by Vlada Tselomudrova

Build Your Own WiFi Scanner: Network Detective Tool

Ever wondered what WiFi networks are around you? Here's how to build one with your hands!

July 19, 2026 by CETECH CETECH

DIY 3D Printed LED Roulette Wheel | ESP32 C3 Project

DIY 3D Printed LED Roulette Wheel | ESP32 C3 Project

Today I am going to show you how I made a "Digital Roulette Wheel" by combining ESP32-C3 with the classic CD4017 CMOS decade counters

July 17, 2026 by Ashish Adhikari

DIY Smart Security Alarm System with Motion Sensor and Arduino

DIY Smart Security Alarm System with Motion Sensor and Arduino

In this tutorial, we will build a simple yet highly effective Smart Security Alarm System using an Arduino, a Passive Infrared (PIR) Motion Sensor, and a buzzer. This project is perfect for beginners who want to get hands-on experience with hardware interrupts, sensor calibration, and basic automation.

July 17, 2026 by sky Lin

DIY ESP32 Telegram Flood Protection System - Smart Home Automation

DIY ESP32 Telegram Flood Protection System - Smart Home Automation

How to build a highly reliable, automated Flood Protection System using an ESP32 microcontroller and a Telegram Bot for real-time remote monitoring and control.

July 11, 2026 by Mirko Pavleski

DIY ESP32 Telegram Flood Protection System - Smart Home Automation

Xiao ESP32 WiFi Piano: Stream Your Music from Any Browser

Build a web-controlled piano using the Seeed Studio Xiao ESP32, a MAX98357 I2S amplifier, and an SSD1306 OLED display.

July 07, 2026 by CETECH CETECH

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