About: Ibrar Ayyub

With this post we wanted to compare the latest arrived boards in the world of hobbyists electronics with devices that were already on the market. We highlighted the pros and cons of the most prominent alternatives with the aim of helping our readers to choose the one better fitting with their requirements. Here’s the list […]

Mechanics of Hand-powered Generators The mechanics of hand-powered generators are not too complicated. They work like other generators, except the initial energy is provided by your arm rather than from steam by burning coal or a flowing river. A generator is basically an electric motor working in reverse. Both are based on principles of magnetism […]

New SSD is designed to considerably boost data processing capability of enterprise servers. Apacer has launched out an SSD solution featuring the high-capacity, ultra-speed performance, high IOPs (Input/Output Operations Per Second) – SAFD 25P (Serial ATA Flash Drive). The standardized SAFD (Serial ATA Flash Drive) SSD consists of highly stable SLC (Single-Level-Cell) chip. The SAFD […]

Introduction. Nowadays, USB is the most popular connection between PC and peripherals such as AVR programmers, printers, scanners etc. For that reason I had to modify my old serial AVR In-System-Programmer (ISP) to work with USB connection. You can say, “use a USB to Serial adaptor to connect your AVR ISP with your PC”. Yes, that could […]

Mechanics of the SteriPEN If you break down the SteriPEN’s name, you basically have the concept in a nutshell. The SteriPEN has the physical appearance of a pen and it sterilizes water. That’s pretty straightforward, right? But what’s amazing is how the SteriPEN rids water of those pathogens we learned about earlier. The key is […]

This simple circuit allows you to use your oscilloscope as a Time Domain Reflectometer (TDR). This is how it works. Send a pulse down a cable and watch for the reflection. Most people think a TDR is more complicated than this. Your oscilloscope is used to sample and view the reflected waveform.  In this circuit […]

A simple signal generator which produces sine waves (or any waveform really) at audio frequencies using DDS and is controlled a USB serial connection. Only 2 chips are used in this circuit. The AVRATmega88 which produces the signal, and an FT232R for the USB interface. While a computer is required to control the varying frequency […]

Lithium-ion batteries are popular because they have a number of important advantages over competing technologies: They’re generally much lighter than other types of rechargeable batteries of the same size. The electrodes of a lithium-ion battery are made of lightweight lithium and carbon. Lithium is also a highly reactive element, meaning that a lot of energy […]

Inside the 7.5W 1,500 lm (200 lm/W) prototype, called TLED, there are separate red green and blue LEDs, and the green is particularly interesting. All made by Lumileds, a Philips spokes woman told Electronics Weekly, the blue (InGaN) and red (likely to be AlInGaP) are direct emitters.

This tiny breakout board carries Microchip’s 24LC512 EEPROM and MCP9802 temperature sensor devices, both of which support I2C protocol. This board can be used for both sensing the ambient temperature and storing it. The MCP9802 is a digital temperature sensor with an user-selectable resolution from 9 to 12 bit. It can measure temperature ranging from […]