Circuit Design projects — HireLancer archive

ID / Date Listing

Custom Development

Key deliverables • Block-level architecture with component selection • Schematic and PCB layout files (Altium) • Test plan plus measured results.

HL-40513443

UAV GPS PCB Design Verification

I have completed the schematic and multilayer PCB layout for a custom GNSS / GPS module that will sit inside a small-form-factor UAV. Before I press the “order”...

HL-40513127

STM32H743 Meter Schematic Update

I already have a complete schematic for a multi-function meter built around the STM32H743BIT6. Before I move to PCB layout I need a fresh set of eyes to refine...

HL-40512200

Theatre Lighting Circuit Extension

I need an experienced, licensed electrician to design the extension of more than 5 hot circuits for LED stage fixtures in a small theatre in Los Alamos, NM. Req...

HL-40511842

Dual-Output Audio Processor Design, Guitar/modular CV efx unit.

I'm seeking an experienced audio engineer to design a dual-output audio processor with two voltage-controlled frequency boundaries. This device will split an in...

HL-40511161

Arduino Maturation Fridge Controller Code

Quiero llevar mi nevera de maduración al siguiente nivel con un controlador Arduino que mida y gestione tres variables críticas: temperatura, humedad y concentr...

HL-40509987

Universal EVSE Controller PCB Design

Universal EVSE Controller PCB – Freelancer Requirement Design a universal ESP32-based EVSE controller PCB for AC EV chargers. Same PCB must support 3.3 kW, 7.4...

HL-40509047

Double-Layer PCB Diagnosis & Repair

I have several double-layer printed circuit board that has stopped performing reliably. Several symptoms point to multiple underlying faults: a few components n...

HL-40508271

Digital Circuit Designer for boat bilge alarm System

I'm seeking an experienced digital circuit designer to create an alarm system for a bilge pumping system on a boat. It’s a one off project.This project is for m...

HL-40508318

Face Recognition Attendance Terminal Design

I'm seeking an experienced hardware designer to create and manufacture a face recognition-based attendance terminal. The system should be built on the i.MX 8M P...

HL-40508008

Electrical Circuit Layouts (NEC)

I have an active construction project that now needs clean, fully-annotated circuit layouts produced in CAD. The intent is simple: every drawing must be build-r...

HL-40507988

Secure Bitcoin hardware wallet prototype. Need embedded hardware engineer for feasibility review and PCB design: dual RA8M1 MCUs, TA101, SE052F, IDQ6MC1 QRNG, DS28E38, USB-C, microSD, display, LiPo power, buttons, tamper.

Hello, Phase Zero PCB Feasibility Review for Secure Hardware Wallet Before starting the full PCB design, I would like to do a Phase Zero feasibility review to c...

HL-40507128

Electrical Engineering for Aluminum Extrusion Facility

Electrical Scope of Work: Power Requirements and Engineering Studies for Aluminum Extrusion Facility number 2. Scope of Electrical Engineering Services The foll...

HL-40506980

Desain PCB Double Layer

Saya sedang mengerjakan perangkat berbasis elektronika dan membutuhkan bantuan untuk merancang PCB dua layer lengkap dengan skematiknya. Fokus utamanya adalah m...

HL-40506981

Skematik ESP32 Sistem Monitoring

Saya membutuhkan skematik rangkaian lengkap berbasis ESP32 untuk proyek sistem monitoring yang sedang saya kembangkan. Fokusnya hanya pada pembuatan skematik—be...

HL-40506984

Desain PCB Mikrokontroler via KiCad

Saya membutuhkan seorang ahli KiCad untuk membantu saya merancang dari nol sebuah skema elektronik sekaligus layout PCB berbasis mikrokontroler. Skema awal belu...

HL-40505622

Radiomaster XR1 Clone Design

I need a complete KiCad design that reproduces the functionality of the Radiomaster XR1 transmitter. Exact mechanical dimensions are not critical (although size...

HL-40505384

Switched capacitor network

The primary challenge in MEMS readout design is capturing microscopic, sub-femtofarad variations in sensor capacitance without the signal being overwhelmed by p...

HL-40503499

ADS1298 ECG Front-End Design

I need a compact, low-noise analog front end for a multi-lead ECG built around the Texas Instruments ADS1298. The goal is a fully validated schematic and PCB la...

HL-40502089

Electrical System Review/rectify for the Design of Recycling Line

I need detailed review/design work for the electrical system of a waste paper recycling production line to the Australian Standard. It has been designed in Chin...

HL-40501051

Drone Battery Wire Soldering

I need a precise, low-resistance solder joint made on the battery leads of my drone. The task is straightforward: take the existing electrical wire coming from...

HL-40500501

Part-Time Motor Control PCB Engineer

I need a senior-level electrical engineer who can split time between working remotely and being on site in Orange County, CA. The project centers on motor-contr...

HL-40499596

Ultrasonic Pest Repellent PCB Design

I need a compact, kitchen-chimney-friendly PCB that drives an ultrasonic transducer in the 40 kHz – 60 kHz band from an AC-mains supply. The goal is a reliable,...

HL-40499406

Framework RP2350 Expansion Card Design

I need a complete electrical and mechanical design for a Framework Laptop expansion card built around the RP235xA microcontroller in the 30-GPIO QFN-60 package....

HL-40498706

ATTiny85 Timer Switch PCB

I need a compact, single-sided board built around an ATTiny85 that lets me toggle two independent loads on and off under firmware-controlled timing. The unit wi...

HL-40498306

Kicad from gerbers

hello, we have a past designer that gave us as deliverabales the production files, gerbers, BOM, pick & place, etc. but now, we would like to create the project...

HL-40498265

BACnet HVAC Visio Design

I need a set of clear, installation-ready Visio drawings for a BACnet-based Building Management System covering the HVAC network only. The finished file must sh...

HL-40497961

25A AC Solid State Relay Design

I need a compact, reliable AC solid-state relay designed specifically for driving pump loads. The control side will accept 3–32 V DC, while the load side must s...

HL-40496179

Raspberry Pi Sensor Project

I'm looking for an experienced Raspberry Pi developer to help with a sensor data logging project. The project involves: - Designing the circuit - Writing the co...

HL-40495917

Online Electrical Tutor Needed

Are you an Electrical Engineering student or recent graduate with a knack for design and a passion for teaching? Earn while you study! We are looking for knowle...

HL-40495877

Compact Stacked PCB Design for ESP32 Smart Switch (Schematics Provided)

I am looking for an experienced PCB designer to create a production-ready, compact PCB layout for a 4-channel ESP32-based smart switch board. To achieve a compa...

HL-40495570

Arduino Hardware Assembly & Soldering

I’ve already designed a small Arduino-based build and gathered every part you’ll need—board, shields, sensors, add-on modules, wiring, and headers. What I now r...

HL-40495294

2026 Ready PCB Redesign

I have the full schematic for working legacy PCB. I need it redesigned and modernised into a new board using current components, while keeping the original boar...

HL-40495199

Home Automation Touch Sensor Circuit

I have a small home-automation module that needs a reliable touch interface, so the task is to engineer a 5 V circuit around the TTP223 that cleanly switches be...

HL-40495057

6S BMS PCB on EasyEDA

I’m developing a six-cell lithium battery management system and need the PCB laid out in EasyEDA Pro. Show me previous BMS or power-electronics, or similarly de...

HL-40494999

Expert PCB Engineer for PI base Board

PCB Layout & Routing Engineer Needed for CM4 4-USB Board - Schematic Verification Required - NDA Mandatory Description: We are looking for an experienced PCB de...

HL-40494080

Select & Simulate Power Switch

I want to decide on the most appropriate semiconductor switch for a new switch-mode power supply design, with switching speed as the overriding priority. Althou...

HL-40489057

Consumer Device Single-Layer PCB Design

I have a new consumer-electronics concept that needs a clean, single-layer PCB focused on reliable power-management. I’ll supply the functional block diagram an...

HL-40492093

NDA Required - EasyEDA PCB Design from Embedded Electronics Schematics

SKILLS:PCB Layout, EasyEDA, Electronics, Electrical Engineering, Embedded Systems, Circuit Design, Schematic Review, DFM, Gerber, BOM, Mixed-Signal Design DESCR...

HL-40491832

Eagle PCB Layout Revamp

I have an existing Eagle board that needs small adjustments and all production files Here is what I’m after: • Re-lay out the board in Eagle, following IPC stan...