Many years ago, I think it was in 1997, I stepped into an interesting circuit on a book about high voltage [1]. It was the diagram of a simple “lightning flash counter” intended to help in designing lightning protections on power lines. The description was very brief, but following the bibliography reference, I could find
A lightning flash counter Continue Reading
“M-my lord, it-it’s impossible to locate the ship. It’s out of our range.” – Nute Gunray We recently moved into a new house and as always the first problem to address was finding the optimal place to park cars in the garage. Ideally, we wanted to park the cars as close to the garage door
Using an Arduino as a garage car parking sensor Continue Reading
This project deals with the design & development of a theft control system for home, which is being used to prevent/control any theft attempt. The developed system makes use of an embedded system (comprises an open hardware microcontroller and a gsm modem) based on Global System for Mobile communication (GSM) technology. The designed & developed
GSM Home Security Alarm System with Arduino Continue Reading
I just received my RC522 RFID reader and made this simple Arduino access control system that uses the reader, a buzzer for the alarm and a relay shield for the security system. The relay can be used to open a door lock and if you need a louder alarm then you can replace the small
Arduino RFID Reader RC522 + Access Control System Continue Reading
With this article I kick off my series on the Arduino Esplora board. Today’s project is a nice (and cheap!) little digital picture frame that uses the Esplora’s TFT Screen add-on. Materials Needed In this section you will find the materials that you need to obtain to build this project. Arduino Esplora Board The Arduino
Fun With The Arduino Esplora: A Digital Picture Frame Continue Reading
I am not sure, but it was in year 1999, a non-stop (360 degree rotation) potentiometer found in a stereo music system confused me a lot. At that time, I failed to keyed out the strange potentiometer manufactured by ALPS. Later, I learned that it’s a Rotary Encoder (thanks to internet), and bought one such
Rotary Encoder & Arduino Continue Reading
We have built quite a few projects using the Bi-color (Red and Green) LED Matrix Driver Module kits from jolliFactory and have published them as instructables here. Each of these modules uses two MAX7219 Display Driver ICs to drive a Bi-color LED Matrix. These ICs are excellent because they take a lot of work off
Arduino based Bi-color LED Matrix Flappy Bird Game Continue Reading
This is a Queuing System project requested by a clinic asistant which allows the doctor enter number from a keyboard and display it on a 32×16 LED panel. This project uses two Arduino, the first Arduino functioned as a SENDER which included a PS2 keyboard and a mini LCD for number input. While the other
Arduino based Electronic Queuing System Continue Reading
Step 1: The case I dug out an appropriate case from the dumpster, milled out a rectangular hole for the lcd, and drilled holes to mount the LCD and the Arduino. I used brass standoffs and fiber washers to prevent shorts. Then I gave the whole case a quick spray of flat black to cover
Digital Arduino Voltmeter with Temperature Continue Reading
This instructable is for two purposes 1) to understand and learn the fundamentals of sequential logic 2) use that knowledge to create a digital clock. Digital clocks have been built by countless electronics hobbyists over the world. So why have I chosen to implement that? Well usually clock circuits available on the internet (all circuits
Learning Sequential Logic Design for a Digital Clock Continue Reading
