Circuit Design projects — HireLancer archive

ID / Date Listing

Smart Door Lock Harness Design

I need a custom harness to connect a Wi-Fi enabled smart door lock, potentially including installation assistance. Requirements: - Design and build a functional...

HL-40371946

Low-Cost 15 V Charge Pump Design

I am developing a compact system powered only by a single +6 V rail and need a charge-pump circuit that can push at least +15 V across a 560 Ω load (and ideally...

HL-40371258

ESP32-WROOM-32E PCB Design in Altium

Have a working circuit diagram for a device based on the ESP32-WROOM-32E module. The system is powered from an external supply (5V / 8V / 12V). The next step is...

HL-40371155

Electric Car Electrical Specialist

The task at hand is to turn a single concept image of my future battery-powered car into a realistic, build-ready electrical system. I already have people who c...

HL-40370439

6-Layer KiCad PCB Layout — LTO Battery Balancer 20A (Production-Ready for JLCPCB)

OVERVIEW -------- I need a KiCad PCB designer to take a fully verified analogue circuit design and implement it correctly in KiCad, producing production-ready g...

HL-40369746

Arduino-Based Environmental Monitoring System

I'm looking for an experienced developer to design an environmental monitoring system using the Arduino UNO R4 Wifi board and LoRa technology. The system will b...

HL-40369747

VS1010 VLSI Audio Integration

I need a skilled embedded systems engineer to integrate the VS1010 for audio playback and recording in an embedded system. The VS1010 should specifically suppor...

HL-40369764

PCB Design Tweaking and Order Placement

I already have step-by-step build notes for a tactile glove and the preliminary PCB design files. What I now need is practical help getting that board fabricate...

HL-40369806

Single-Layer Thin PCB Prototype

I need a custom-shaped, single-layer printed circuit board produced quickly so I can test the mechanical fit and basic electrical routing for a new product I am...

HL-40369511

Quick UX Feedback: PCB Engineers

I’m inviting a handful of practicing hardware engineers or PCB designers to spend about 15 minutes inside my pre-launch web app, PartPilot (bestpartpilot.com)....

HL-40368195

PCB Design for MY Machine Systems -- 2

i want a PCB for in-situ, real-time verification of sensor integrity in a live without interrupting the control process of components of PCB for cooling, heatin...

HL-40367618

Dual-Channel Controller PCB Replication

I’m holding an ageing but still functional dual-channel, 80 A DC reverse controller that was built for industrial truck-tarp systems about fifteen years ago. Th...

HL-40366510

Tracker PCB: Bluetooth, LoRa, GNSS Integration

I need a production-ready printed circuit board for a compact consumer-electronics tracker. The board has to combine Bluetooth connectivity for smartphone pairi...

HL-40366576

Programmable Coil Controller PCB Design

I have a coil-driving concept on the bench and now need a professionally engineered PCB to turn it into a working prototype. The controller must provide fully p...

HL-40365869

Verify & Enhance IoT Cooking Schematics

I have three interconnected PCBs for an IoT-enabled cooking system and I need a fresh, expert set of eyes on the schematics before they move to layout and certi...

HL-40365868

Pneumatic Design Engineer Needed

We are OMM Enterprises, a company engaged in machine manufacturing and sales, including paper plate machines, roti making machines, and other automation equipme...

HL-40365453

Arduino Traffic Light Controller

I need a clean, well-commented Arduino sketch that drives a small traffic-light prototype using LEDs, push-buttons, and a couple of sensors (e.g., ultrasonic or...

HL-40365124

Tactile Glove PCB Ordering Assistance

I already have step-by-step build notes for a tactile glove and the preliminary PCB design files. What I now need is practical help getting that board fabricate...

HL-40365053

Analog PCB Design for Audio Amplifiers

I'm seeking a skilled PCB designer to create an analog printed circuit board for a simple audio amplifier. Key Requirements: - Design and layout for an analog P...

HL-40364805

FPGA & ESP32 Hardware Enhancement

I’m refining a set of custom boards that combine an FPGA-based signal generator with several ESP32 modules. The immediate gap is in analog and digital circuit d...

HL-40364722

Custom BeagleBone Light Pod PCB

I need a complete PCB solution for a BeagleBone-based light pod whose primary purpose is, quite simply, “Lightpod.” The concept is already proven on a breadboar...

HL-40364262

12V Embedded Controller PCB Design

I’m building a compact embedded platform that runs from a single 12 V supply and I need a purpose-built PCB to act as the system’s brain. The board has to host...

HL-40364075

ESP32-C6 Solar IoT PCB Design

I need a production-ready circuit and compact PCB built around the ESP32-C6 for an IoT device that must run efficiently on both a small solar panel and a rechar...

HL-40364138

Inverter Bus Voltage Feedback Circuit Design for PWM SG3525 &LM358

I need a clear, ready-to-build circuit diagram that closes the voltage feedback loop on the DC bus of an off-grid inverter running in the 12 V – 24 V range. The...

HL-40363877

LM5170 EVM Buck Debug Help

My Texas Instruments LM5170EVM-BIDIR board refuses to deliver any output voltage when I switch it to buck mode. Boost mode also does not run, so I’m convinced t...

HL-40363391

KiCad ESP32 Two-Layer PCB Gerbers

I already have a complete circuit schematic for an ESP32-based board and now need it translated into production-ready, two-layer Gerber files. Please work exclu...

HL-40362949

PADS Binary Schematic Conversion

I have a single PADS Logic schematic saved in its native binary format and I simply need it converted to the equivalent PADS ASCII file. Deliverable • The conve...

HL-40361273

Industrial IoT PCB Design: Schematic Review, ESP32 Update, Engineering Optimization & Full EasyEDA Layout

I am looking for a skilled electronics/PCB design freelancer for an industrial IoT device. This is not just a simple PCB layout job. The work includes schematic...

HL-40361296

Modbus to USB Adapter Integration - 10/04/2026 01:10 EDT

I need an interface connector for carrying sensor readings from Ultrasonic datalogger by Modbus cable RS-485 with a male connector. The PCB interface is to be b...

HL-40361163

Pneumatic Design Engineer Needed

We are OMM Enterprises, a company engaged in machine manufacturing and sales, including paper plate machines, roti making machines, and other automation equipme...

HL-40360646

Analyze PoE Injector Board

I have a working PoE injector board in hand and need a clear, engineer-level breakdown of how it does what it does. Your analysis should cover three areas: • Po...

HL-40360407

Cadence spice Timing Interpretation

Need help for two questions cadence spice simulation budget 30$ plz check the attachment

HL-40360305

Quadruped Power PCB Design

I need a compact, reliable PCB that will serve as the power and control backbone for my quadruped robot. The board has to integrate three key blocks: a microcon...

HL-40360193

Instalación inversor híbrido y tablero

Necesito sustituir mi inversor actual por un inversor híbrido solar y dejarlo funcionando junto a un banco de baterías de entre 5 y 10 kWh. El trabajo incluye,...

HL-40359693

Pond Ionizer Circuit Board Development

I need a compact circuit board designed to function like a pond ionizer, primarily to control algae growth. Requirements: - Input: 24V AC or DC - Output: 12V DC...

HL-40359301

Medium-Size Consumer PCB Layout

The full schematic for this project is already complete; what I now need is a clean, manufacturing-ready board layout for a consumer-electronics product that wi...

HL-40358372

Arduino Shooting Target System

I'm looking for an experienced Arduino programmer to create a microcontroller-based shooting target system. The system will feature 20 targets spread over a wal...

HL-40356827

Compact PCB for AutoSmear Device

I already have an ESP32-C3 prototype of AutoSmear running reliably on a hand-wired board, but now it is time to turn that lab-bench tangle into a production-rea...

HL-40357849

Commercial Wall Lighting Repair

I am looking to hire a licensed and experienced electrician in Virginia to inspect and repair an issue with my display wall lighting. The lighting is currently...

HL-40357755

Commercial Electrical Project Design -- 2

I'm seeking a skilled project designer for a commercial electrical project. The work involves creating detailed designs using KiCad. Key requirements include: -...