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Engineering Projects For You

Free electronics projects, circuit diagrams and software codes available for students and hobbyists. Complete instructions on DIY electronic devices also available. These projects have been tested by EFY and are available with source codes. These are helpful with understanding concepts of electronics including basic components. The projects are designed to be helpful for engineering students and professionals building their own designs and circuits. The projects are also compiled from time to time to provide a single destination for project junkies. Let us know how you feel about the content and any thing you would like us to cover in the future. We hope you enjoy the content on this page!

Reference design for High-Voltage Current Sensing

The design enables precise measurement of high AC currents while maintaining electrical isolation between the sensing and measurement circuits. Applications like EV powertrains, battery monitoring...

Reference Design for Isolated DC Voltage Sensing

Using an isolated sensing architecture, the circuit converts high DC voltages while maintaining electrical isolation between the input and measurement circuitry. In high voltage systems...

Humanoid Major Joint Motor Control Reference Design

The design helps you build motor control systems for humanoid robot joints faster by simplifying power and signal connectivity. Molex has released a Major Joint...

Industrial AMR Reference Design to Accelerate Robot Development

This design integrates industrial-grade hardware, AI computing, and ROS 2 software to simplify development, reduce integration complexity, and speed deployment of next-generation mobile robots. Autonomous...

Reference Design for 3.3 V Active Backup Power

Using supercapacitor-based energy storage, the circuit maintains power to 3.3 V systems during power interruptions and battery replacement. A reference design  by Vishay gives power...

Reference Design for Active Discharge of 800 V Systems

The active discharge circuit reduces stored capacitor energy to safer levels while eliminating the continuous power losses associated with conventional discharge methods. DC-link capacitors with...

GaN-Based Microinverter Reference Design 

Designed for modern PV modules exceeding 400W, the design demonstrates a high-frequency, single-stage DC-AC conversion approach that reduces component count, lowers BOM cost, and...

Ultra-Compact GaN Motor Drive Reference Design 

Combining high switching frequency, exceptional power density, and a footprint small enough for embedded actuators, the platform enables next-generation robotic joints, end-effectors, and UAV...

Open Reference Design for Humanoid Robots 

Combining AI foundation models, high-performance edge computing, simulation tools, and advanced robotic hardware, this new open reference design aims to simplify humanoid robot development...

Motor and Motion Control for Humanoids

Could a single motion-control platform bring together movement, sensing, communication, and AI processing in humanoid robots? The answer may change robot design. As humanoid robots...

High-Power Servo Drive Reference Design for Industrial Automation

It provides a complete reference design for next-generation robotics, CNC systems, and automated manufacturing solutions. The STEVAL-ISD01KCB from STMicroelectronics is a compact, high-power servo drive...

Humanoid robot hand reference design

What if six motors could run from a single controller? This reference design shows an approach for robotic hands and multi-axis motion systems. Humanoid robots...

Simple Solar Light Circuit

Summary: Automatic solar garden lights provide nighttime illumination without requiring grid power or complex wiring. A small solar panel charges a rechargeable Ni-Cd battery during...

Small Engine Control Reference Design

From fuel injection and ignition control to diagnostics and ECU communication, this reference design brings key engine management functions together for engineers to test...

Vehicle Control Unit Reference Design

See how engineers can build, connect, test, and validate vehicle systems using one reference design. The AS260 Vehicle Control Unit (VCU) reference design from Renesas...

Reference Design for Active Capacitor Discharge

What happens to stored energy after a system shuts down? This design shows a way to discharge it only when needed. High-voltage DC-link capacitors are...

5 Interesting Reference Designs For Air-Conditioner And HVAC Systems

From smarter compressors to sensor-driven climate control, these HVAC reference designs show how cooling systems are becoming far more intelligent and efficient. Modern air-conditioning and...

Batteryless Gaming Console

The Game Boy, the legendary gaming console of the 1990s, still holds a special place in the hearts of gamers. Its simplicity, durability, and...
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