EXPLORE

Electrical Engineering

5.0

(4 reviews)

Hamza M.

@ElecHamza

5.0

4

2.5

2.5

100%

✅ PCB ✅ Arduino ✅ AutoCad ✅ Matlab ✅LabVIEW

$25 USD / Hour

・

Pakistan (6:40 PM)

・

Joined on November 29, 2025

$25 USD / Hour

・

I’m a dedicated Electronics Engineer specializing in PCB design, embedded systems, and technical drafting. With strong experience in Arduino-based projects, circuit design, and simulation, I deliver reliable, high-quality engineering solutions. I also provide precise AutoCAD drawings and advanced MATLAB analysis to support engineering research and product development. My goal is to bring your ideas to life with accuracy, creativity, and professional execution. Key Skills: ✅PCB Design & Schematic Development ✅Arduino Programming & Prototyping ✅Embedded Systems & Microcontroller Integration ✅AutoCAD 2D/3D Drafting ✅MATLAB Simulation, Modeling & Data Analysis ✅Circuit Debugging & Optimization ✅IoT Prototype Development ✅Technical Documentation & Reports

Verifications

On time

100%

On budget

100%

Accept rate

71%

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Portfolio

Portfolio

Analysis Description
This image displays a project within EasyEDA, a popular web-based tool for circuit design and PCB manufacturing. The central schematic illustrates a discrete transistor H-Bridge circuit, constructed using complementary pairs of BD139 (NPN) and BD140 (PNP) bipolar junction transistors. This specific circuit topology is the industry standard for controlling DC motors, as it allows the current to flow in either direction, enabling the motor to spin forward or backward. The inset windows at the bottom show the progression of the design, moving from the component footprint to the final PCB layout (the red board view), ready for etching or manufacturing.

H-Bridge PCB Design

This is a MATLAB Simulink model designed to control a Magnetic Levitation (MagLev) system. The core of the system is the green Discrete-Time PID Controller block, which constantly calculates the precise magnetic force required to keep a metal ball floating in mid-air. The model is a "Hardware-in-the-Loop" simulation: it can switch between controlling a real physical device (via the blue Humusoft Analog Input/Output blocks) and a virtual simulation (the Magnetic Levitation Plant Model). It effectively reads the ball's position, compares it to a target height (Setpoint), and adjusts the electromagnet's voltage to maintain stability.

MagLev PID Control

Analysis Description
This image depicts a Tinkercad circuit simulation utilizing an Arduino Uno R3 to monitor the performance of DC motors powered by an external 24V supply. The circuit features sensors (likely Hall effect sensors) mounted on a breadboard that send data to the Arduino’s interrupt pins (Digital 2 and 3) via green wires. The visible code implements a magnet_detect interrupt service routine to calculate time gaps and pulse counts, simulating a tachometer or "missing tooth" gear position sensor often used in automotive timing. The Serial Monitor actively logs these "states" and counters, confirming the system is real-time tracking the rotation speed or position of the active motor.

Arduino RPM Tachometer

Analysis Description
This image displays a project within EasyEDA, a popular web-based tool for circuit design and PCB manufacturing. The central schematic illustrates a discrete transistor H-Bridge circuit, constructed using complementary pairs of BD139 (NPN) and BD140 (PNP) bipolar junction transistors. This specific circuit topology is the industry standard for controlling DC motors, as it allows the current to flow in either direction, enabling the motor to spin forward or backward. The inset windows at the bottom show the progression of the design, moving from the component footprint to the final PCB layout (the red board view), ready for etching or manufacturing.

H-Bridge PCB Design

This is a MATLAB Simulink model designed to control a Magnetic Levitation (MagLev) system. The core of the system is the green Discrete-Time PID Controller block, which constantly calculates the precise magnetic force required to keep a metal ball floating in mid-air. The model is a "Hardware-in-the-Loop" simulation: it can switch between controlling a real physical device (via the blue Humusoft Analog Input/Output blocks) and a virtual simulation (the Magnetic Levitation Plant Model). It effectively reads the ball's position, compares it to a target height (Setpoint), and adjusts the electromagnet's voltage to maintain stability.

MagLev PID Control

Analysis Description
This image depicts a Tinkercad circuit simulation utilizing an Arduino Uno R3 to monitor the performance of DC motors powered by an external 24V supply. The circuit features sensors (likely Hall effect sensors) mounted on a breadboard that send data to the Arduino’s interrupt pins (Digital 2 and 3) via green wires. The visible code implements a magnet_detect interrupt service routine to calculate time gaps and pulse counts, simulating a tachometer or "missing tooth" gear position sensor often used in automotive timing. The Serial Monitor actively logs these "states" and counters, confirming the system is real-time tracking the rotation speed or position of the active motor.

Arduino RPM Tachometer

5.0 · 4 Reviews

4 Reviews

IoT Weather Monitoring System using ESP32

Great understanding and corporation. Surely hire him again for my future projects

Electrical Engineering

+1 more

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Hardware Engineer / PCB Designer — 30 Min Paid Feedback Session (archived)

Best in the world we a 1000 more Hamzas simple that should tell you enough !

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Convert a cadint .brd to cadint .alg -- 2

He deliver what i need and adjust the delivery to fit my need that i do not give him in the initial request. I will for sure use him again

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Control System MATLAB Coaching

Good job, good work

Matlab and Mathematica

Electrical Engineering

Signal Processing

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National University of Science and Technology

2023 - 2025

•

2 years

Electrical Engineering

Pakistan

2023 - 2025

•

2 years