About: Ibrar Ayyub

The Nitty Gritty on SpnKiX Push forward on the remote and the skates’ motors move you forward, pull down and the skates will slow you down. Easy enough, right? There’s also a physical brake on the back that you can push down with your heel to help you stop, but the motors will presumably still […]

In a very affordable price level, a multimeter able to measure a DC current without interruption of a measured circuit can be found.  UT203  UT203 from company UNI-Trend belongs to a category of clamp multimeters. A main reason to buy a clamp multimeter is usually a requirement to measure current flowing through a wire without […]

I recently salvaged a vacuum fluorescent display (VFD) from a piece of old test gear. The VFD is a 13 digit 7-segment multiplexed display and I thought it would look great in a custom digital clock or something similar. While it has the model number FUTABA 13-MT-54NA, I could not find any information on the […]

The little disposable battery testers that you see on batteries or battery packages are a great example of combined technologies — several existing technologies have been combined in a completely new way! Battery testers depend on two special types of ink: thermochromic and conductive inks. Thermochromic ink changes color depending on its temperature. Conductive ink […]

Perceiving Sound Virtual surround-sound systems take advantage of the basic properties of speakers, sound waves and hearing. A speaker is essentially a device that changes electrical impulses into sound. It does this using a diaphragm — a cone that rapidly moves back and forth, pushing against and pulling away from the air next to it. […]

If you need an isolated power supply for some part of your device, Traco TMH series DC/DC converters will create this second voltage to you. Imagine, that in the whole device we only have 5 Volts but for one integrated we need a higher voltage. Or we even have a suitable voltage, but for a […]

Over the last 20 years or so, fiber optic lines have taken over and transformed the long distance telephone industry. Optical fibers are also a huge part of making the Internet available around the world. When fiber replaces copper for long distance calls and Internet traffic, it dramatically lowers costs. To understand how a fiber […]

So this is a 4×4 projected capactive touch board using Atmega32u4 and back-fire LEDs for each button. I want to send the gerbers to Seeed sooon so any advice/feedback is very much appreciated. It fits SoB 100x80mm but the top acrylic will sit right on top of the PCB as the dielectric properties of whatever […]

History In 1988, Sony entered into an agreement with Nintendo to develop a CD-ROM attachment, known as the Super Disc, for the soon-to-be released Super Nintendo. Due to many contractual and licensing problems, the Super Disc was never released. Instead, a modified version was introduced by Sony in 1991, as part of a system called […]

Hardware Like a portable media center, the Explorer is essentially a handheld computer. It uses a Linux operating system, and it processes and stores interactive presentations using: An AMD Alchemy 800 mhz processor 256 MB of RAM At least 2 GB of storage space It then plays them using a trans-reflective, high resolution touch screen […]