About: Ibrar Ayyub

This single sided proto board provides an economical solution for developing and testing the projects around Atmel 20 pin series u-controllers (89Cx051 & AVR) Figure 1 shows the circuit diagram of proto board. All port connections are available for user interface around the proto area including the power supply pins. MAX232 serial driver is used […]

Augmented-reality applications — software that overlays a level of digital information on top of the physical world around us — have brought us more data. With an augmented-reality app on your smartphone, you might be able to hold your phone’s camera up to capture the image of a city street. Looking at the screen, you […]

Razen features an integrated schematic and layout editor with forward- and back-annotation. Editing library parts uses the same schematic & layout interface. 3rd-party part libraries can be imported and used directly from the editor. The interface, shortcuts and editing tools are customisable – from simple shortcut-key/display options to Python-scriptable editing tools. All projects are stored […]

My wife asked me to find another timer for using in the kitchen. She got one already with analog setting, but it needs one AA size battery. Digital setting may not easy for human interface. However I will make it for easy time setting. When I am free I will modify it to be analog […]

Since the 1980s, computer scientists have been trying to answer these questions. Their field is a specialized subset of haptics known as computer haptics. Over the next few pages, we’ll cover how haptic technology works by: relating computer haptics to related fields of haptics research characterizing the types of h­aptic feedback required for realistic virtual […]

This new version has internal Ni-MH battery backup, reset button and simple time setting. Now the circuit board was embedded with lamp fixture. Preset turn on period is from 18:00 to 22:00 everyday. You may let the saver turn on whenever you want. The period of time on can be reprogrammed with sdcc. Howvere this […]

The bq25504 from Texas Instruments is a good candidate to become a milestone on the road to micro-power management and energy harvesting. A prominent feature of this IC is its ability to start up at a supply voltage as low as 330 mV typically, and 450 mV guaranteed. With an SMD inductor and a few capacitors and […]

ere’s a question: What happens when one of the world’s largest electronics companies makes a move to edge its competition out of the top spot in the portable gaming industry? If you’re Nintendo, and Sony has made it clear that it wants to crush you with its new PlayStation Portable, you throw a curve ball […]

Its a digial clock which make use of AT89C4051 to work as a Real time clock. Figure 1 shows the circuit diagram for the digital clock. Port 1 of the controller (AT89C4051) is used as the data lines for the LCD (starting from pin 7- pin14 of LCD). here i am using a 16 x […]

MechG developed a breadboard scope meter to help him identify and lower power consumption in his projects. The Power Scope is a meter intended for use on a breadboard to aid in the development of battery-operated devices. It provides dedicated monitoring at the power source so you can quickly see the effects of circuit/software changes […]