Zaid Pirwani

an all-round Engineering and Technology Geek, founder EjaadTech and Pop Up Learning – IT Manager at FESF

  • Dual Power Supply [Gallery]

    Dual Power Supply [Gallery]

    In first year of engineering, we were taught about rectification of ac signal by diode and how to make a simple power supply using step-down transformer for decreasing the voltage level of mains, diode for rectification, capcitors for filtering and voltage regulators at the end to regulate the voltage to some proper level. Until I…

  • Tachtastic – AVR Tachometer

    Tachtastic – AVR Tachometer

    “Tachtastic”, a not so creative name for a tachometer. I was in my 2nd year of BE at the time and making a Tachometer seemed like a good idea and an easy project (according to a senior). For those who don’t know, a tachometer is a device which can count the number of revolutions/rotations of…

  • Selection Menu for Text LCD [AVR]

    Selection Menu for Text LCD [AVR]

    An option-selectable-menu on a text LCD using an AVR is not such a big deal, but having it sure saves a lot of time as such a menu can be quite helpful and useful in many projects. Here’s a video of the simulation: I first made the menu for my AVR Tacho-meter project (AVR Tachometer…

  • Killing an AVR (or ARDUINO)

    Killing an AVR (or ARDUINO)

    While working with AVRs, a few chips have been the unlucky ones who have died at my hands. I have damaged and completely killed(made dead) chips by giving over-volatge, sourcing too much current or simply by breaking away a few legs (including the VCC and GND legs). One-time, the damage was only done to one…

  • Giving Presentation IPAD Style [VIDEO]