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Circuit Design Electrical Engineering Mathematics Matlab and Mathematica PCB Layout
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Hamza M.

@ElecHamza

5.0
2

1.9

1.9

100%

✅ PCB ✅ Arduino ✅ AutoCad ✅ Matlab ✅LabVIEW

$25 USD / Hour

・

Flag of

Pakistan (5:58 AM)

・

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

80%

Freelancer Matlab and Mathematica Engineers Pakistan
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Portfolio

Portfolio

13704283
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

13704276
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

13704270
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

13704283
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

13704276
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

13704270
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 · 2 Reviews
Reviews
User Avatar

Convert a cadint .brd to cadint .alg -- 2 • $75 USD

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

Mikal D.

@mikaldregg

•

Flag of

Tau, Norway

•

4 months ago

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I

Control System MATLAB Coaching • $15 USD

Good job, good work

Imad A.

@imad6677

•

Flag of

Seeb, Oman

•

4 months ago

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Education

National University of Science and Technology

2023 - 2025

•

2 years

Electrical Engineering

Flag of

Pakistan

2023 - 2025

•

2 years

Freelancer logo US (International) / English
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