About: Ibrar Ayyub

A long while back I posted a version of the schematic for the electronics for my project to build a GPS-steered parachute for rocket recovery. Since then I’ve tweaked the board a bit, to the point where the hardware design is clean and bug-free (as far as I know). So here is the current version […]

The Windows Hobbyist Electronic Inventory System or WinHesit is an electronics component organizer on steroids that was developed with the electronic hobbyist in mind. Designed to be light weight, responsive and most of all easy to use it also allows a lot of information to be optionally entered for those that need to store more […]

Overview This project has come about from my desire to control my home heating from work.  As I have a VPN between work and home a straightforward relay controlled from a PC would seem the easiest solution.  However I also wanted a control unit that I could operate in the house without resorting to the […]

Imagination Technologies says highly parallel graphics processors in mobile phones can be doing more processing. The UK-based company has announced a new PowerVR imaging framework for Android, which will allow computational photography and computer vision functions to be integrated into the phone’s camera applications. Processing intensive functions which are ideal for the low-power highly parallel […]

This page describes a PIC10F200-based electronic dice. The reason I made this was that I got a small corner left over when ordering a panel with a couple of other PCBs and thought I would rather use the corner for something fun than leave it unused, so I made a dice. The PCB is quite […]

What if you could cure blindness as easily as turning on the lights? That’s what one doctor and his team are hoping to achieve with a clinical trial that uses a new form of retina implant to return sight to patients who have  lost the ability to see. And for one of the six patients, it’s been a pretty incredible journey. Rhian […]

Temperature and relative humidity are two very important ambient parameters that are directly related to human comfort. Monitoring these factors becomes even more crucial in various applications such as environmental control systems and indoor climate management. Integrating sensors like the Sensirion SHT1x/SHT7x can provide precise measurements, ensuring optimal conditions for occupants while also enabling efficient […]

The device used for measuring daily insolation has been developed. The device was built with a PIC18F458 and the 128MB Multimedia Memory Card, MMC. The solar radiation is measured by a calculator solar cell. The PIC chip interfaces the MMC using SPI mode. The interval between samples is set to one minute. The firmware detects […]

Introduction After I made the clock, the pong and tetris games I thought that it also would be cool to connect the game system to a standard rs232 port and scroll text comming from the port. When I thought about it, I found that there is a problem scrolling text comming from a RS232 port […]

The circuit is a simple digital frequency meter that is made of a frequency-to-voltage converter and an analog-to-digital display converter that can be operated from a single 9-volt battery. The TC7126 ADC generates the voltage required by the TC9400 FVC with internal regulators. The TC7126 is designed to directly drive a 3-1/2 digit, non-multiplexed LCD […]