About: Ibrar Ayyub

This project consists of two temperatures that are measured by the Arduino using two MCP9700 temperature sensors An Arduino Uno and Ethernet shield are set up as a web server that hosts a web page to display the two temperatures on two gauges. The web page is stored on a SD card that is plugged […]

There’s another promising contender in the race to supplant the dominance of lithium-ion and metal-hydride based batteries in the world of energy storage. New research from the Karlsruhe Institute of Technology’s (KIT’s) Helmholtz Institute Ulm (HIU) details the development of an electrolyte that can be used in new magnesium-sulfur battery cells that would be more […]

I have a home security system that was installed when my home was built in the early 1990’s. It is, or was until I modified it, a wired perimeter system with a single wired motion detector. The system is a DSC PC1550 and originally was monitored by a well known alarm system service, a three […]

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 […]

Did you miss our webinar? Watch the VIDEO – record… With the Bolymin graphic embedded module it´s possible to focus only on software development – hardware is done..All participants of the webinar could get Bolymin BE635 graphic embedded module and PICkit 3 In-Circuit Debugger with 25% discount.   For more detail: How to effectively handle […]

“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 […]

In this episode Shahriar repairs an Agilent 33250A function and arbitrary waveform generator which does not power on. The unit is equipped with a soft power switch which might be responsible for the fault. After a brief look at the unit’s constructions, the fault is traced to a few possible locations. The schematic of the […]

Hi folks, Here’s an interesting project for all you creative minds out there. We are going to build an android phone controlled RC car. Nothing could be more fascinating than remote controlled cars. This one uses Bluetooth for communication and accelerometer of the mobile device for gesture control. The reason behind the use of a […]

What’s inside a smart card pinpad EFTPOS terminal? Dave looks at the anti-tamper mechanisms inside a Sagem Monetel EFT930S   For more detail: EEVblog #687 – EFTPOS PIN Pad Terminal Teardown

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 […]