Circuit Splash

Learn how to build a Face ID-controlled digital door lock using ESP32-CAM, relay module, and solenoid lock. Step-by-step guide with circuit diagram, Arduino IDE setup, and full code for a secure IoT-based access system.

Getting stuck out in the rain without keys was the motivation for this project. It lets you trigger a garage door opener through a website hosted by an Arduino. With the Arduino connected to a wireless network, you can use your smart phone to connect to the webserver, enter a password, activate the garage door and get inside before getting drenched in the downpour.

Here in this project we are using Arduino and relay to trigger the Electric Door Lock and RFID to authenticate, so your RFID tag will act as a key. If you place wrong RFID card near RFID reader a buzzer will beep to alert about wrong card.

In this project we are going to build a cell phone controlled robot using 8051 microcontroller. Cell phone controlled robot runs over mobile DTMF technology. DTMF stands for Dual Tone Multiple Frequency. There are some frequencies that we use to create DTMF tones. In simple words by adding or mixing two or more frequencies we generate DTMF tone.

Learn how to connect RFID to Arduino to build a functional DIY projects using rfid reader and arduino. This beginner-friendly tutorial walks you through the setup and code needed to detect RFID tags. After mastering these Arduino RFID fundamentals, you will be ready to tackle advanced projects like Arduino RFID door lock system and many more.

Combining Arduino and other shield modules, we make a mobile phone named Arduino Phone. Meanwhile, we printed a shell for it with the 3D printer. Although it’s not such fine as you think, even a little bit clunky, it’s still very cool. That is the point this is a cell phone made by ourselves.

Learn how to create an ESP32-powered Smart traffic management system using IoT that uses IR sensors for real-time vehicle detection, enables adaptive signal control, and provides a live web dashboard for monitoring traffic flow.

ESP8266 is a wifi transceiver module with an inbuilt microcontroller. In this tutorial we will learn How to use AT commands to operate ESP8266 Wi-Fi Transceiver module.

You must have seen automatic door openers in shopping malls and other commercial buildings. They open the door when someone comes near the entrance and close it after sometime. A number of technologies are available to make such kinds of systems like PIR sensors, Radar sensors, Laser sensors, Infrared sensors, etc.