Circuit Design projects — HireLancer archive

ID / Date Listing

PCB Layout & Component Updates -- 2

I have an existing PCB design that needs a refresh. The core of the job is two-fold: first, add several new components to the board; second, reshape the layout...

HL-40175228

Multi-layer PCB Design for Consumer Electronics

PCB DESIGN REQUIREMENTS (FINAL – MECHANICAL CONSTRAINT UPDATED) 1. BOARD OVERVIEW (UPDATED) PCB Type: Main controller PCB (production-grade) Board Width: 100 mm...

HL-40174444

PCB Layout Engineer Needed - KiCad

I'm looking for an experienced PCB layout engineer to help with a prototyping project using KiCad. The PCB will need to support both through-hole and surface-mo...

HL-40174245

Adjustable 0-15A Current Regulator Circuit -- 3

I'm in need of a basic precision, manually controlled (potentiometer), adjustable current regulation circuit that can handle up to 15A at 120VDC. The primary ap...

HL-40174204

Commercial Power Distribution Drafting

I need an experienced electrical drafter to assist with commercial power distribution projects. Requirements: - Expertise in commercial electrical systems, part...

HL-40174058

Simucube JST-Molex 8-Pin Cable

I need a custom 8-pin (4×2) cable or adapter that lets my Simucube 3 Pro wheel-base control box talk to the base. The control box side ends in an 8-pin JST plug...

HL-40173898

PCB Design - Ultra Low Power Automated Parking Barrier

I’m building an ultra low battery-powered automated parking barrier and need an experienced PCB designer to take an existing design brief/spec, validate the des...

HL-40173867

Adjustable 0-15A Current Regulator Circuit -- 2

I'm in need of a basic precision, manually controlled (potentiometer), adjustable current regulation circuit that can handle up to 15A at 120VDC. The primary ap...

HL-40173051

EasyEDA PCB 4 Zone Amplifier Design - only open to my previous freelancer in Pakistan - freelancer have messed up - its Graham

I have a consumer-electronics circuit that now needs to move from breadboard to a production-ready printed circuit board. The finished board will be larger than...

HL-40171467

Velostat Pressure Mapping Matrix Troubleshoot

I have developed a Velostat-based pressure mapping matrix. The setup uses 9 copper columns on the top layer and 9 copper rows on the bottom layer of the Velosta...

HL-40170581

EPLAN Low-Voltage Control Panel Schematics

I need a complete low-voltage control-panel design produced directly in EPLAN. The project moves from my rough outline to a fully documented set of wiring diagr...

HL-40169905

Bidirectional 48-24 V Converter Design

I already have a working MATLAB model of a 48 V ↔ 24 V bidirectional DC-DC converter and now need to turn that simulation into real-world hardware and firmware....

HL-40169563

Single-Layer PCB, 16 Buttons

I have already drawn the exact board outline in AutoCAD and will share the DXF as soon as we begin. Your task is to turn that shape into a one-layer PCB that ca...

HL-40169262

PCB Board Design with Touch-Controlled & LED Light (USB-C Powered with Battery Provision)

We are looking for an experienced PCB Board Design Engineer to design a compact PCB with touch-based ON/OFF control and LED Light. The board will be powered via...

HL-40169102

On-Site Circuits & Networks Tutor

I’m looking for someone who can meet me face-to-face and guide me through intermediate material in circuits and networks. My focus is on analog circuits and the...

HL-40168894

Force and Motion Sensor Prototype

I have an existing base unit and now need to turn it into a working prototype that can read both force and motion inputs, house the electronics safely in a meta...

HL-40167733

ADU Electrical Blueprint & Documentation

I am seeking a qualified freelancer (for example, an electrical engineer, CAD designer, or permitting specialist) to prepare specific electrical plans and docum...

HL-40167377

KiCad PCB Layout Small Board

I’ve finished the full schematic capture and just need the layout completed in KiCad. The board is a compact, double-layer design that will stay under 10 cm × 1...

HL-40166594

Altium ESP32 Medical PCB

I have a working circuit diagram for a medical BMI device that runs on an ESP32 and draws power exclusively from a source (5V, 8V, or 12V). The next step is to...

HL-40164789

Diagnose DS1307 Time Drift

My DS1307 real-time clock drifts unpredictably; it can keep perfect time for hours and then suddenly jump ahead or fall behind without any pattern. Power cycles...

HL-40164098

Experienced RF Engineer Needed

RF Engineer Skills/Knowledge - Solid general background in RF, Microwave and Millimetre Wave theory, techniques and technologies - Medium level experience in th...

HL-40163497

Repair Tripping Washing Machine Breaker

Der Sicherungsautomat für meine Waschmaschine löst jedes Mal aus, sobald das Gerät läuft. Das Problem ist seit etwa einem Monat reproduzierbar und betrifft nur...

HL-40162347

Transformer-Rectifier Design for DC Lighting

I need a design and specification for a transformer-rectifier unit to power DC lighting. The specifications are: - Input: 120VAC - Output: 74VDC - Power Rating:...

HL-40162262

Simple Single-Layer PCB Design

I am working on a university hardware project in KiCad and I have a deadline in 5 days. I am looking for help with the hardware design only. The task is to desi...

HL-40162174

Smart Home IoT PCB Design

I’m building a smart-home device that tracks and optimises household energy use, and I need a seasoned IoT engineer to transform the concept into a production-r...

HL-40162041

MATLAB Simulation Expert -- 3

Details: I need a power-system simulation built and validated in MATLAB. I have an Electrical Power System that I need modelled and explored in MATLAB by Using...

HL-40161921

MATLAB Simulation Expert

Details: I need a power-system simulation built and validated in MATLAB. I have an Electrical Power System that I need modelled and explored in MATLAB by Using...

HL-40161982

MATLAB Simulation Expert -- 2

Details: I need a power-system simulation built and validated in MATLAB. I have an Electrical Power System that I need modelled and explored in MATLAB by Using...

HL-40161829

Compact ESP32 Voice Assistant PCB

I’m building a small-footprint “Macho” voice-assistant board and need a complete hardware package created in EasyEDA. The core is an ESP32-WROOM-32 (38-pin dev...

HL-40160581

Smart Parking Disc Modification -- 3

Project Brief: Stealth-Modified Automatic Parking Disc (Certified for Public Road Use in Germany) Project Goal: I want to technically modify a certified electro...

HL-40158041

Analyse complète et correction PCB multicouche

Mon design PCB est déjà placé et routé, mais, avant de lancer le prototype, je veux m’assurer qu’il est vraiment prêt. Il s’agit d’un circuit multicouche et je...

HL-40156879

Repair Water-Damaged Car Amplifier - Location Albany Western Australia

I have a Harman / Becker 9065 amplifier from a 2011 Mercedes-Benz that was exposed to water on a number of ocassions. The unit delivers no sound at all to the s...

HL-40156619

Senior Electrical Engineering Project – Motor System Upgrade for Environmental & Experimental Devices --2

We are an engineering-driven company working on specialized environmental and experimental devices that are used in real-world testing, measurement, and control...

HL-40155933

Embedded Firmware Developer Needed

We are a UK-based startup developing AURA, a premium self-service perfume dispenser for high-end venues (clubs, hotels, gyms). We are seeking an experienced eng...

HL-40155995

Circuit Board Replication Expert Needed

I'm looking for a skilled professional to help me replicate a circuit board. The circuit board is for a radio device.See below https://kitronik.co.uk/products/2...

HL-40155868

300 W Pure-Sine Inverter Design 512 bit

I’m putting together a microcontroller-based inverter for industrial equipment and need an engineer to translate my specs into a production-ready design. The go...

HL-40155873

PCB Layout & Component Updates

I have an existing PCB design that needs a refresh. The core of the job is two-fold: first, add several new components to the board; second, reshape the layout...

HL-40155883

Mixed SMD Sensor Module Design

I have already chosen the core components for a compact mixed-signal board that will consolidate several sensors—a barometric pressure sensor, a nine-axis IMU,...

HL-40155020

Altium/TRM Power Board Thermal Audit

I have two high-current power boards already laid out in Altium Designer. Before I move them to fabrication I need an experienced engineer who can open the exis...

HL-40154936

Custom ESP32-C6 + TI IWR6843AOP mmWave PCB

Project Title ESP32-C6 + TI IWR6843AOP mmWave Radar Custom PCB Design ⸻ Project Description We are looking for an experienced hardware / PCB design engineer to...