Content for Perfboard

Keypad and SMS Based Dual Door Lock System

“Dual password lock system is designed to open lock via Keypad when available at home and via SMS when away from home in case the guest arises. The SMS feature also provide the availability to change password.”

LED Heart Photo Frame - Make a Perfect Valentine’s or Birthday Present

“Hello! In this instructable I will show you how you can make this awesome LED Heart Photo Frame. For all Electronics Enthusiasts! Make the perfect Valentine’s, Birthday or Anniversary present for your loved ones! You can watch the Demo …

Small LED Tester

“YALT, YALT, YALT…, or “Yet Another LED Tester”. There are already several different types of LED testers on Instructables. So why another? Well, it started after I accidentally bumped over one of my component drawers. The drawer was filled with …

Adding a USB power port to a switch for IoT

“Hi all! After some time out, due some hard work, I’m here again with a ‘one weekend’ project (in my case, with three childs. Sure it can be done in one afternoon!). I want to start some projects with …

Attiny 45 EMF Sensor

“This sensor is very sensitive and can pick up electrical signals from anything that uses power. It displays the amount of interference it picks up by sequentially lighting 4 led’s one after the other. I have tested it all …

EL Wire - Arduino Mini Pro - Relay Controller Module 6 Channels

“Searching in others Instructables I found many ways to control EL Wire with arduino but not all were like I wanted, so I decided to create my own version, maybe is not perfect but works. This EL Wire Module controlling …

NE555 timer synthesizer

“Hello, I see you wan’t to know how to make an NE555 timer based 3 octave synthesizer which fits in a tin. Well, you came to the right place :)”

RC Controlled Rgb Led Strip

“Create your own rc controlled led-strip for individual room illumination! Most rgb-led-strips are controlled by an infrared remote control. To turn it off or on or change the color, you have to stay in front of the receiver. This is …

Robot Controlled by Human Fingers

“This innovation comes from the hand movements that can controll a robot. In this project i use flex sensor and i am taking the flex sensor reading and putting this reading on to the intel edison. as a analog value …

Tesla Free Energy Air Circuit Design and Testing

“This video demonstrates a circuit design I found on YouTube called a Nikola Tesla Free Energy Air Circuit. That video showed a hand drawn circuit diagram that looked simple so I decided to build one. Actually, I ended up building …