Circuit Design projects — HireLancer archive

ID / Date Listing

Refine Meshcore-Pi Mainboard

I have an open-hardware setup that links a meshcore nRF52840 repeater to a Raspberry Pi, all powered by a 5 W solar panel and small battery pack. The Pi should...

HL-40438130

NEC-Compliant Single Line Diagram

I need a single line diagram for electrical system documentation and compliance. The diagram must comply with NEC code and local regulations. Requirements: - Mo...

HL-40438192

Biomedical Embedded PCB Layout

I need an experienced PCB designer for a compact wearable biomedical sensing device intended for chest-mounted physiological monitoring. The board should be bas...

HL-40438095

Arduino Motion-Triggered Speaker Code

I have a small outdoor setup where a motion sensor should fire a brief contact that feeds a speaker. All I need from you is a clean, well-commented Arduino sket...

HL-40437876

Hardware Development Engineers for Consumer-Grade Embedded IoT System

We are seeking experienced Hardware Development Engineers to lead the end-to-end development of a consumer-grade embedded IoT system. This is a collaborative pr...

HL-40437880

800 Amp Service Installation

I need an 800 amp electrical service installed for a commercial property. Basic site plans are available to assist with the installation. Ideal Skills and Exper...

HL-40437508

DC-DC 28-120 V Boost Converter

I need a DC-DC converter prototype as per the following parameters: -Power Rating: 150W -Input: 28V DC Nominal (+/- 2V variation in the input) -Output: 180V, 1A...

HL-40437317

FADEC ECU Multilayer PCB Design

1. Main Controller • The board’s main controller will be a microcontroller from the Teensy 4.0 class. It must have sufficient processing speed and GPIO capacity...

HL-40437103

Altium to Pads VX2.7 Project Translation

I need someone to migrate/translate Altium project in pads project. The files are ready in altium need exactly similar output delivered in pads vx2.7

HL-40436346

DXF-Based 2-Layer PCB Layout

I have a complete mechanical outline in DXF format and need it translated into a fully routed, double-layer PCB ready for fabrication. The board will live insid...

HL-40435686

Análisis Circuitos Lineales en Multisim

Pago total 20 dólares se necesita para mañana temprano Tengo una serie de ejercicios universitarios que requieren un análisis exhaustivo de circuitos lineales e...

HL-40435539

Industrial Membrane Keypad Circuit Design

I have a Snap-On MT-1665 oscilloscope that the keypad is not working. I found a Company that can make one but I need an exact high tolerance file made. I need t...

HL-40434909

Multi-Layer PCB Mentor, Delhi NCR

I’m undertaking a hands-on learning project focused on advanced, multi-layer PCB design and I need a mentor who can guide me in person within the Delhi NCR area...

HL-40434853

Régulateur de vitesse DC à potentiomètre

Je souhaite réaliser un petit module capable de faire varier la vitesse d’un moteur à courant continu (DC) à l’aide d’un potentiomètre rotatif. Voici ce que j’a...

HL-40434405

Finalize ESP32 High-Power Controller

Il progetto – un controller basato su ESP32 capace di gestire correnti fino a 30 A – è ormai quasi concluso: i prototipi girano, le PCB sono state prodotte, ma...

HL-40434414

Smart Home Hardware Technical Researcher

Technical Researcher – Hardware Research & Procurement (Smart Home / Electronics) We are building a premium local-first smart home system and need an ongoing te...

HL-40433412

Diseño Lógico para Ignición Segura

Necesito plasmar, con rigor técnico, el funcionamiento de un sistema de control de ignición basado únicamente en compuertas AND. El alcance incluye tres piezas...

HL-40431948

Digital Lock Development Support

I’m building a new electronic digital-lock and need an enthusiastic fresher who wants real-world experience in the technical electronic domain. You’ll work alon...

HL-40431788

Professional PowerPoint Technical Presentation Creation from Research Paper (High-End Visual Design Required). -- 2

I am looking for a freelancer to create a professional, visually-driven technical presentation based on a single research paper (will be provided). Read and ful...

HL-40431565

12V Boat Power System Design

I'm looking for an experienced freelancer to design a 12-volt power system for my boat, incorporating both solar and wind power sources. The system should inclu...

HL-40431467

Mobile Brake Maintenance Needed

My car’s brakes have begun squeaking and I can feel the stopping power fading, so I’m looking for a mobile mechanic who can come to me for a full brake service....

HL-40431179

Single-Layer PCB Design for Radio Prototyping

I'm seeking an experienced PCB designer to create a single-layer circuit board for a radio prototype. The PCB will include sensors, power management units, and...

HL-40431015

Hardware & Mechanical Engineer for Ultra-Compact IoT Hub

I am seeking a senior hardware engineer to design a highly dense, 4-layer PCB and a matching 3D-printable enclosure for a travel IoT device. The device acts as...

HL-40430848

Diseño instalación eléctrica almacén pequeño

Estoy cerrando mi proyecto de fin de carrera en Ingeniería Mecánica y, como parte fundamental, debo presentar la instalación eléctrica completa de un pequeño al...

HL-40430642

PCB Prototype Test Board

I have a circuit idea that now needs to move from the sketchpad to a real-world prototype. The end goal is a fully built, ready-to-power-up PCB that I can use p...

HL-40430612

4x4 Arduino Keyboard Schematic

I need a clean, ready-to-build schematic for a compact keyboard that uses an Arduino Micro as the controller. The board is for everyday, general use and will be...

HL-40430335

Gigabit 48V-24V PoE Converter Design

I need a complete electronic design that takes a 48 V PoE mid-span input and delivers a stable 24 V PoE end-span output at up to 30 W while passing full gigabit...

HL-40430210

8-Port Smart Switch PCB Design

I’m building a compact, 8-port smart Ethernet switch and need a seasoned PCB engineer to turn the concept into production-ready files. Every port will present a...

HL-40430200

DSP-Based 3kW Sine Wave Inverter Design

I'm seeking an experienced power electronics engineer or inverter design firm to create a high-quality, DSP-based, low-frequency, pure sine wave inverter PCB fo...

HL-40429488

Electrical System Design for Recycling Line

I need detailed design work for the electrical system of a waste paper recycling production line. This includes designing control panels and integrating the sys...

HL-40429365

C++ Coding & Engineering Tasks

I’m lining up a series of mini-projects and need an extra pair of expert hands. The core of the work is writing clean, well-commented C++ that compiles flawless...

HL-40427712

Vending Machine System with Raspberry PI

Seeking a Software Developer & Electronics Engineer building innovative IoT and embedded systems. Must have experience and sample project regarding Vending mach...

HL-40427106

Radio Circuit Design with ESP32 and TMC5160T

I'm looking for an experienced circuit designer to create a circuit using ESP32 and TMC5160T. The circuit should support motor control, sensor integration, and...

HL-40426716

New Electrical System Installation Needed

I’m putting together a project that centres on one clear objective: installing brand-new electrical systems from the ground up. The space is a blank slate, so I...

HL-40426256

KiCad RFID Antenna PCB Design - 07/05/2026 11:43 EDT

PROJECT DESCRIPTION: I need a KiCad PCB designer to create three RFID antenna boards from scratch and deliver verified, JLCPCB-ready Gerber files. No existing f...

HL-40425426

LoRa ESP32 Home Control Prototype

I have a proof-of-concept in mind that will let me switch household appliances on and off from a distance using LoRa and an ESP32. The focus is purely remote co...

HL-40424700

DALI Dimmable Lighting Solution Design

DALI Dimmable LED Driver / Controller Design Requirement Project Overview We are looking for an experienced electronics hardware engineer/freelancer to design a...

HL-40422886

Multilayer PCB Replication

I need an experienced PCB designer to replicate a multilayer consumer electronics board based on existing schematics. The board is used in a radio device and in...

HL-40422782

AMR SoC PCB Gerber Design

I’m developing a compact consumer-electronics board built around an ARM Cortex-M device and now need the full PCB layout ready for manufacture. The schematic is...

HL-40421623

Solder new cells into 15 original first generation "cigalike" e-cigs

I have fifteen disassembled original first generation "cigalike" e-cigarettes waiting for fresh new cells. The spent batteries still have to come out; I’ll supp...