Circuit Design projects — HireLancer archive

ID / Date Listing

Σχεδιασμός Βιομηχανικού Ηλεκτρολογικού Πίνακα

Χρειάζομαι εξειδικευμένο επαγγελματία για να με βοηθήσει στη σχεδίαση ενός βιομηχανικού ηλεκτρολογικού πίνακα. Παράδοση που περιμένω: • Αναλυτικά μονογραμμικά/π...

HL-39956407

Low-Cost Analog Signal Circuit

I’m putting together a small, budget-sensitive project that calls for a straightforward analog signal-processing circuit working strictly at low frequencies. Th...

HL-39953526

Complete KiCad PCB Routing

I have a 130 mm × 90 mm board in KiCad that now needs a full routing pass and tidy-up so I can send it straight to fabrication. The schematic is finished; footp...

HL-39953106

Portable Industrial DAQ Prototype

I need a complete portable data-acquisition system. The unit must simultaneously log pressure, vibration, ultrasonic and TDC/RPM signals coming from piezoelectr...

HL-39953038

PCB Temporizador Pulso Seco

Necesito diseñar una pequeña placa de control que genere un pulso de disparo variable de 0 s a 2 s cuando recibe una señal de 12 V de entrada (la señal proviene...

HL-39952722

Mobile Hydrogen Generator - Power Electronics Design

Guidance and hands-on support are required to take a power electronics system (DC-DC & DC-AC) for a hydrogen generator application from concept to a build-ready...

HL-39952312

Oxygen Sensor Display & Alarm System

I’m building a compact monitor that reads oxygen levels, shows them on a small graphic LCD, and triggers alarms when thresholds are crossed. Here’s the function...

HL-39950863

Electronics Engineer for PCB Diagnosis & Repair

Job Alert: Electronics/Repair Engineer 1.Core Diagnosis & Analysis: Utilize your simple circuit analysis skills and tools like the Multimeter (and Oscilloscope)...

HL-39950914

Radio Frequency Engineering Expert

I’m refining a hardware-software product whose success hinges on solid radio-frequency performance, and I need a seasoned RF engineer to guide that part of the...

HL-39950784

14 mm Round Li-ion Charger PCB

I’m building a miniature device powered by a 3.7V Battery Lithium Polymer 160 mAh cell and I need a full, ready-to-manufacture charging board. The board must be...

HL-39950112

Jetson Carrier & Power PCB

I’m building a small embedded vision rig and need a compact PCB that can host an NVIDIA Jetson compute module plus a separate, no-frills power distribution boar...

HL-39949523

Gaming Console PCB Design

I need a PCB designed for a gaming console. The PCB should support audio output functionalities. Ideal Skills and Experience: - Expertise in PCB design - Experi...

HL-39949609

Low-Profile TKL PCB & BOM

I’m building a tenkeyless mechanical keyboard that uses low-profile, hot-swap switches and I need a complete hardware package to move it from concept to product...

HL-39947798

Arduino Motion-Controlled Light - 04/11/2025 07:56 EST

Saya sedang menyelesaikan tugas sekolah yang mengharuskan saya membuat rangkaian Arduino sederhana. Proyek ini memanfaatkan sensor gerak untuk menyalakan dan me...

HL-39947431

Finalize PCB & Prototype Order

My 2-layer PCB is already 95 % complete. I now need a fresh set of eyes to: • Tweak and lock-in the remaining component placement so the board is clean, balance...

HL-39947170

Arduino Kiwi Grading Machine Support

My M.Tech thesis centres on building a weight-based grading machine for Indian kiwis. The prototype already has an Arduino Uno, a stepper motor that turns a rot...

HL-39946629

CNC Plasma Isolation Circuit

I’m upgrading the plasma source on my CNC plasma cutter and need an experienced power-electronics professional to create a compact voltage-isolation module for...

HL-39945795

Compact Single-Layer HV Signal PCB

I need a one-layer PCB, smaller than 5 cm × 5 cm, that takes a low-level control signal, divides it with a 4020 counter, passes it through a MOC3041 opto-triac...

HL-39945455

Ingeniero/a Electrónico para Cerradura de Seguridad (Fase Final de Producto) -- 2

Oferta de Colaboración: Ingeniero/a Electrónico para Cerradura de Seguridad (Fase Final de Producto) Buscamos un Ingeniero/a Electrónico/a freelance y con exper...

HL-39943571

Diseño de PCB de 4 capas para dispositivo IoT con módulos RF y sensores.

Busco apoyo para transformar un esquema electrónico en una PCB de prototipo de 4 capas, tamaño mediano (aprox. 5–7 cm), con integración de varios módulos de com...

HL-39943075

PCB Design For AC DC Converter of 2 Channels and Multi Cut PCB

I need a production-ready PCB for a 250 W AC-DC converter that accepts a 230 ±10% VAC input and delivers a 2 channel 5.5 V DC and 5 V DC. Your job is to Design...

HL-39941773

Raspberry Pi Lighting Control Guide

I have an existing Raspberry Pi setup that drives a light-control platform, but I no longer have clear documentation for it. I need a straightforward blueprint...

HL-39941269

Industrial Automation PCB Design

I am Dr. Sampath Emani, a PhD in Chemical Engineering I am writing to seek your collaboration on a consulting project involving the design and development of a...

HL-39940370

Basic Wind Turbine AC-DC Converter

I need a straightforward circuit that turns the small-scale AC output of my miniature wind generator (i have followed a YouTube guide to make the generator, a b...

HL-39939205

Residential Electrical Load Upgrade

I’m increasing the power demand in my home and need a licensed electrician to bring the entire system up to the new load requirements. The job covers a single-f...

HL-39937926

ESP32 Kelvin Resistance Measurement Setup

I need a complete, ready-to-flash solution that lets my ESP32 measure very low resistances—from 0.1 Ω up to 10 Ω—using a true 4-wire Kelvin technique. This is a...

HL-39938296

Measurement Device Prototype Engineer

I’m ready to move an ambitious idea forward and need an electrical-engineering partner who can turn it into a first-run electronic prototype focused on measurem...

HL-39937836

Automotive Sensor ASIC Blueprint

I’m planning an automotive-grade ASIC focused on reliable sensor interfacing and need a seasoned embedded engineer to shape the initial blueprint. Here’s what I...

HL-39937158

Button-Activated Vibration Device Design

I need a compact, battery-powered electronic device that produces a noticeable vibration whenever a user presses a single onboard button. The overall goal is to...

HL-39936330

تصميم لوحة PCB متكاملة

أحتاج إلى تصميم لوحة دائرة إلكترونية مطبوعة صغيرة (أقل من ‎10‎ سم) لتحريك مجسم المجموعة الشمسية داخل الصف. اللوحة ستتحكم في محرك واحد يحرك الكواكب وتدمج نظام إض...

HL-39936081

Hardware e Software para Testador Arduino

Preciso de uma solução completa, baseada em Arduino, que execute testes automáticos em chicotes elétricos recém-saídos da linha de produção e confirme se cada p...

HL-39935349

Compact Smartwatch PCB Design

I’m building a small, rugged smartwatch and need a complete PCB designed that fits inside a maximum watch size of 40 × 40 × 12 mm (rectangular preferred). The b...

HL-39934346

Rugged High-Performance DC-DC Converters Design

DC-DC Converters Project Project Overview: I am building a new Australian brand focused on creating the world’s best DC-DC converters in efficiency, reliability...

HL-39933572

Diseño de Diagrama Unifilar Eléctrico

Necesito un diagrama unifilar eléctrico de nivel intermedio para una tarea académica. El objetivo es entregar un archivo en formato digital—puede ser DWG, DXF o...

HL-39933305

Debug Overheating Charge Board PCB

I designed a small charge-control board in EasyEDA around the FM5324GA. Although the layout functions, it overheats and the output droops instead of a steady 5...

HL-39933070

Arduino pcb

Freelancer Request Message (Updated with TFT feature) Subject: Request for Full Design and Documentation – Interactive Force-Controlled Liquid Dispensing System...

HL-39932818

PCB Design for Smartwatch

I need a detailed schematic diagram, Bill of Materials (BOM), and Gerber files for a smartwatch PCB. The smartwatch will have notifications and alerts functiona...

HL-39932683

Commercial Alteration MEP Drawings

I’m altering a commercial space in Chesapeake, VA and need a set of permit-ready MEP drawings. My immediate priority is the complete electrical layout—lighting...

HL-39932489

Electro-Osmotic Concrete Drying Design

Electro-Osmotic Drying System – Electronics Specification Electro-Osmotic Drying System – Electronics Specification Client: Frode Evje – Norway Project Scope El...

HL-39932140

Low-Cost Voltage Regulated Circuit Design

I need a compact, low-cost circuit that automatically cuts off power when the supply voltage drops below 3.3V. The input voltage will range from 4V to 3.3V, and...