The Brandner E-300 was an Egyptian turbojet engine, developed for the Helwan HA-300 light jet fighter.

A simple but very useful Zener diode tester

The simplest way to make a relatively powerful stereo Vacuum Tube audio amplifier with components that are easily available.

An industrial-grade Star-Delta electrical control panel designed for motor starting applications, featuring overload protection, timer control, and safety interlocks

In this tutorial, I am going to talk about the PC817 Optocoupler which is one of the most common and inexpensive 4-pin optocouplers.

HackPlate is an open-source preheating station created for makers, repair technicians, and hardware enthusiasts who want full control over their tools. Built around a Raspberry Pi Pico (RP2040) and a Solid-State Relay (SSR 40A), it manages temperature control for PTC plates or heating elements with precision and reliability. HackPlate was designed as a transparent, modifiable, and educational tool — promoting the maker and hacker culture by encouraging learning, experimentation, and community-driven improvement. Anyone can modify the design, optimize performance, or contribute to its firmware and documentation.

Turn voice into autonomy. Your mini rover learns to bypass obstacles and run full missions — all from simple commands.

PCB Reverse enginnering : 2 layers , pcb2

a late WW2 german submarine

With the new retro-style tuning dial and improved waterfall dynamics, the user interface is now as impressive as the receiver's performance.

In this project, I built a simple yet effective variable high voltage power supply using affordable components, offering precise control for high-voltage experiments.

Reverse enginnering of 6 layers PCB

A reusable template for makers: touch UI, instant reaction, and MCU-based neural speech. CrowPanel UI + TinyTTS voice: instant offline speech on the MCU, ready to extend and remake.

It is one of my Mechanical part designed in solid works as a assignment

One of my first PCB reverse-engineering projects.The board is two-layer, with components soldered only on the TOP side.There are no components soldered on the BOT side.