Circuit Design projects — HireLancer archive

ID / Date Listing

Miniature Submersible RF Device

I'm looking for an engineer to design a miniature submersible wireless device for underwater communication. This device needs to be capable of sending a short R...

HL-39755032

Smart Cap Development -- 2

The supplier will receive from us the mechanical layout of the cap in STEP format and will be responsible for designing, industrializing, and delivering the com...

HL-39754137

PCB Prototyping Specialist for Neurostimulation Electrode Designs

I'm seeking a PCB prototyping specialist and electrical engineer to design and iterate on PCBs quickly and reliably. We will compensate for speed and reliabilit...

HL-39753793

PCB Design for 24V DC Motor Controller

I would like to request your PCB Design Service for a project: a 24 V / 5 A motor controller for a small electric scissor lift platform (max. 25 kg load, base 2...

HL-39752938

24V to 240V Converter Design with BMS

I need a skilled engineer to design a PCB and software for a portable device that converts DC 24V to 240V. The device should have an integrated battery charger...

HL-39752779

Correct & Finalize/Improve EEG Arduino Shield

I need an experienced electronics engineer to review, correct, and finalize an existing EEG Arduino Shield design in KiCad (using Olimex active electrodes). The...

HL-39752312

ESP32 Bioresonance Device PCB Design

I'm looking for an experienced PCB designer to create a PCB for a Bioresonance device aimed at the consumer market, based on the ESP32. Essential features: - Bl...

HL-39751819

Circuit Design & Development of Fully Digital Weighbridge Indicator (SMD, Hardware + Software)

Description: We are looking for an experienced Electronics Design Engineer or team to develop a fully digital indicator circuit for a vehicle weighing bridge. T...

HL-39748931

Arduino RGB LED Control

I need an Arduino Uno setup to control RGB LED strips. The control should allow for: - Static colors - Color transitions - Custom patterns Ideal Skills and Expe...

HL-39748574

KiCad Two-Layer PCB Layout

I already have a finished KiCad schematic and now need it turned into a clean, two-layer PCB. The board is straightforward—just four ICs, one of them an ESP32-S...

HL-39747757

Custom RF Device Development UK only M25 area

Summary Seeking an Artisan Builder for an Experimental Sensor Project (Contract)** **Project:** Help Needed to Build a Sensitive Prototype **Location:** Your ho...

HL-39747726

STM32 Debugging and Arduino Code Development

I need an expert electrical engineer to assist with debugging an STM32 circuit and writing Arduino code. I'd like to hop on a call immediately for $30/hr consul...

HL-39747540

Verify Seven-Axis Servo Wiring

I already have seven AC servo motors mounted, the drives, cables, power supplies, I/O, and a schematic from the supplier. What I do not have is absolute confide...

HL-39746289

PLC motor control programming and HMI

I need a skilled professional to develop and deliver a PLC application program for an Allen-Bradley Micro850 in Connected Components Workbench (CCW) to control...

HL-39745827

PCB Designer Wanted – Early OBD to OBDII Adapter Development Attempt Number 2

(Applicants from select countries will not be considered – see below) I am seeking a highly skilled and experienced PCB designer to develop a compact, standards...

HL-39744370

RF Keyless Repeater Development

Kann jemand Keyless Repeater bauen?

HL-39744385

PCB Design for a music controller

I need a PCB designed for a Teensy 4.1 controller that integrates multiple functions. I am building a controller to expand the functionalities of a musical devi...

HL-39744244

STM32H7 IoT Device PCB Design KiCad Hardware Engineer

Job Description: We are seeking an experienced KiCad hardware engineer to design and route a complex industrial IoT edge device PCB. This is for our EsoCore pla...

HL-39744081

IoT-Based Smart Lock Device Development

IoT Smart Lock Device – Requirement Specification 1. Core Features Location Tracking: GPS/GNSS-based location tracking with real-time updates. Motion & Vibratio...

HL-39743469

Mimo antenna designing for 3.5 ghz -- 2

I'm seeking an expert in HFSS to design a patch antenna for wireless communication. I have designed a mimo antenna according to me ,now what i need is to modify...

HL-39735919

High-Current Solenoid Driver Circuit Design

I need a safe, reliable design for a high-current driver circuit to power a 12V solenoid using 18V tool batteries (Ryobi/Milwaukee/Makita). Requirements: - Deli...

HL-39735791

24-30V & 15V PSU Design

I need a compact, medium-power supply that will accept a 24 V DC input and provide two regulated outputs: • 30 V DC for a three-phase BLDC motor • 15 V DC for t...

HL-39734422

Pcb doesn’t work

We have a simple pcb which burns as sometimes. Check the simple schematic Tell me what’s wrong Update the KiCad files Make the pcb 1mm smaller On the last sampl...

HL-39732430

Proton Precession Magnetometer Circuit Design

Looking for an expert to design a circuit for my project, which is a Proton Precession Magnetometer. Order flow is as follows; -polarizing pulse which energizes...

HL-39732333

Wigig over fiber optic cable, wigig optical extender

Pcb design: Nyák tervezés: Szeretnék egy olyan extender-t, ami kiterjeszti a wigig hálózatot optikai kábelen keresztül. Tehát meghosszabbítja a wigig antennát o...

HL-39730997

PCB and Firmware Verification

I need help verifying and correcting connections on a PCB involving ATMEGA328P, MFRC52201, and MCP2515. You'll also check and improve the Arduino firmware funct...

HL-39730514

Hydronic Heating System Schematic

I need a detailed electrical schematic for a hydronic heating and hot water system including a heat pump and a wetback fire. The schematic should be provided in...

HL-39728576

Autonomous Scooter & Car(vehicles) Wiring & Circuits -- 2

The project involves creating a complete electrical architecture for an autonomous car, from high-level power distribution down to connector pin-outs. Schematic...

HL-39727717

Custom ESP32 KiCad PCB Design: Schematic Review & Layout for Interconnect and power management PCB

Project Overview: I require an experienced PCB designer to review my existing KiCad schematic and perform the complete PCB layout for a custom-shaped board. The...

HL-39727589

Power Transformer Design

I need a power transformer designed with the following specifications: - Type: Power transformer - Voltage Rating: Medium voltage (1kV - 35kV) - Power Rating: U...

HL-39727550

Basic PCB Design for Junction Box

I'm seeking a freelancer to design a basic PCB for a simple electrical junction box. The junction box will be used to connect analog components. Requirements: -...

HL-39727158

Smart Home Energy Management System - 23/08/2025 19:53 EDT

Project Description: This project aims to design and implement a smart electrical system that helps reduce household electricity consumption effectively. The sy...

HL-39724914

Arduino Shield for MAX4619 Power Glitching

I need an Arduino shield adapted from Raspberry pi to interface with a MAX4619CSET for power glitching. A schematic will be provided. Requirements: - Capable of...

HL-39724959

Compact Wireless Charger Design

I need a small circuit board designed for a compact wireless charger. The charger should be compatible with fitness trackers (rings) and must include overheat p...

HL-39724456

Improve Basic Electronic Trigger Circuit

I have a basic electronic circuit design to trigger a LOW-HIGH-LOW signal from a PIR device. The trigger is not enough to to activate the required integrated ch...

HL-39723288

RF Circuit and PCB Design

I need an experienced designer to create an RF circuit and PCB for communication purposes. The circuit will operate outside the typical frequency ranges and wil...

HL-39723157

High-Frequency RF PCB Design

I'm looking for an experienced RF PCB designer to create a medium-sized (10-50 cm²) PCB for a SAR sensor application. The primary application is yet to be defin...

HL-39721330

Consultoría PCB Multicapa en Concepto

Buscamos un profesional en diseño de PCB que trabaje de forma colaborativa con nosotros. La placa no es complicada, es un diseño sencillo y no debería requerir...

HL-39720714

Compact Hi-Fi Bluetooth Audio Player

I'm looking for a skilled developer to create a compact audio playback device with the following core functions: Audio Playback: - Play audio files from a micro...

HL-39720623

PCB soldering or Electronics repair – Circuit Repair Specialist (South Florida)

We are seeking a freelance welder with strong skills in PCB soldering and circuit repair. The ideal candidate must be able to solder resistors and other electro...