Zaid Pirwani

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

Category: Projects

  • AVR Fuse-Bit Fixer [Gallery]

    AVR Fuse-Bit Fixer [Gallery]

    The Doctor to my AVRs, introducing the AVR Fuse-bit Fixer / Resetter. This is actually a High Voltage Parallel Programmer and High Voltage Serial Programmer built into one circuit with code to automatically reset any AVR connected to its terminals to factory settings. Details of AVR Fuse-Bit Fixer [nggallery id=4]

  • 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…

  • L297-L298 Stepper Driver – Vero-Board [Gallery]

    L297-L298 Stepper Driver – Vero-Board [Gallery]

    Another day, a cricket match which the whole nation is watching and I just finished making a circuit, on vero-board. L297 and L298 make a perfect pair for a stepper motor driver circuit, like the two were made for each other (actually they really are made as a pair, I think…). As usual, I wanted…