Circuit Design projects — HireLancer archive

ID / Date Listing

Design MSSB Board to Aussie Standards

I need an MSSB board designed for commercial use, adhering to the Australian AS/NZS 61439 standard for low-voltage switchgear and controlgear assemblies. The in...

HL-40008730

CST 1x4 Power Divider Designs

I need two separate 1×4 power divider models created and fully simulated in CST Microwave Studio. The first must cover 6 – 8 GHz, the second 26 – 28 GHz. My pri...

HL-40008241

Phase Angle Measurement Circuit Design

I need a compact, reliable circuit that can determine the phase angle between two voltage waveforms that may vary anywhere from 1 mV up to 250 V while operating...

HL-40007802

Compact SMD Circuit Design

I need a 45-55 mm diameter SMD board that drives a tiny fan from a 500 mAh Li-ion cell. The board must integrate: • a USB-powered charging module, • a tactile b...

HL-40007295

Arduino Lie Detector System

I'm looking for an experienced Arduino developer to build a lie detector system using various sensors. The system will utilize an AHT10 temperature and humidity...

HL-40006618

UK Electronics Expert – Build Extremely High-Power Ultrasonic Dog Bark Deterrent (Through-Floor, Max Volume)

Job Description: I need an experienced UK-based electronics builder to design and assemble the most powerful possible ultrasonic anti-barking device for use in...

HL-40005124

SystemVerilog Capacitive Sensor Module

I’m building a small proof-of-concept that turns the raw analog voltage from a capacitive proximity sensor into a clean Near/Far decision with hysteresis and st...

HL-40004725

Breakout with Hirose DF56C-30S-0.3V(51) → 2.54 mm Header + Prototype Build

I need an Altium-designed breakout PCB that uses the Hirose DF56C-30S-0.3V(51) connector — the exact same connector that is on my A640 thermal module — so that...

HL-40003998

Streamline PolarFire Dual-Camera FPGA

I have Microchip’s PolarFire reference project running two cameras, and the current data-processing stage is far heavier than I need. Your task is to open up th...

HL-40002728

Compact OLED USB-C Smartphone Display

Project goal You want a compact finished device. No assembly on your side. The display must work when plugged into a phone through USB-C. You want a case that c...

HL-40002438

Add Connectors To Gerber

I have a medium-sized, multi-layer PCB for which I only possess the production Gerber files—no schematic, no native CAD project. I need two standard RJ14 footpr...

HL-40001653

Simplified Cost-Efficient Inverter PCB of 100watt

I have an existing inverter 100 Watt PCB with automatic change-over that has grown far too complex. My goal is to strip it down to the bare essentials so it can...

HL-39999418

TB6600 Stepper Driver Setup

I already have a bipolar stepper motor, a TB6600 driver and a pulse / direction source on the bench, but the motor is still not turning. I need clear, hands-on...

HL-39999353

Regulated 12 V 3 A Magneto Circuit

I’m looking for a complete design of a magneto-based power-supply module that takes a 6–12 V AC input from the magneto coil and delivers a steady 12 V DC at 3 A...

HL-39999034

Raspberry Pi Zero LoRa Interface PCB

I’m putting together a compact add-on board for a Raspberry Pi Zero 2 W that will serve as the “all-in-one” backbone of a small, battery-powered LoRa project. T...

HL-39998066

Logisim 32-bit RISC Pipeline Design

I need a complete Logisim circuit that realises a 32-bit RISC processor whose instruction width is 16 bits. The core must follow the classic five-stage pipeline...

HL-39996641

Hiring PCB Hardware Engineer – ESP32 + Topway Display + RFID Antenna Integration -- 2

We have a fully working prototype of an arcade RFID payment system using ESP32, Topway HMT035ATA-1C (3.5” TFT) display, external RFID module, relay output, buzz...

HL-39994159

Teensy 4.1 One-Cycle FSK

I’m building a proof-of-concept transmitter that must output a single, precisely timed cycle of FSK per data bit on a Teensy 4.1. The bit stream is stored exact...

HL-39994188

Custom Aluminum Calyx Volume Remote Control

I have a Calyx CTI integrated amplifier but no remote, so I need a brand-new one built from scratch. The only function it must perform is volume adjustment thro...

HL-39992190

Digital Laser-Measuring Tape Creation

For developing a digital steel measuring tape with integrated laser measurement. I’m looking for a skilled freelancer experienced in: Laser diode and distance s...

HL-39991903

VFD Display Replacement Advisor

I need guidance to replace an obsolete VFD display on a PCB. The display shows both numerical data and text messages. Key requirements: - Exact dimension match...

HL-39991276

GBA/GBC Cartridge Reader PCB Design

I have a half-finished KiCad project for a very small board that will plug a Game Boy Color / Game Boy Advance 32-pin cartridge into a Raspberry Pi (or similar...

HL-39988999

Prototype-Ready Mini PCB Design

prototype PCB design. Looking for experienced kicad fella.

HL-39988442

Industrial Monitoring Sensor PCB Design

I’m building a compact PCB that will sit at the heart of an industrial-automation monitoring unit and interface directly with environmental sensors (temperature...

HL-39987812

Half-Bridge Converter Circuit Design & Simulation

Consider the half-bridge converter given in the figure below with parameters L = 690 μH, R = 5 mΩ, VDC/2 = 600 V and Vs = 400V. Perform the following for this h...

HL-39985952

Prototype a Low-Voltage Converter

Design and prototype a low-voltage doubler or boost at minimal BOM-cost. ======= CLIENT A nonprofit electronics mentoring project for disadvantaged teenagers. W...

HL-39985979

AD7512-ADG5436 Switch Migration

My existing design relies on the AD7512 protected dual SPDT CMOS analog switch in a 14-pin PDIP package. Production stock has vanished, so I am moving to the An...

HL-39985827

USB-C PD Hub PCB Design -- 2

I’m ready to move from concept to production on a compact USB 3 hub built around a USB-C upstream port with full Power Delivery negotiation. The board will be c...

HL-39984398

Residential Electrical Installation

I’m upgrading a home and need a skilled electrician to handle a full installation package—new lighting fixtures, additional electrical outlets, and the necessar...

HL-39983506

Arduino Touchless Sanitizer Prototype

I’m putting together a compact, battery-powered hand-sanitizer station driven by an Arduino UNO. An ultrasonic sensor will sit at the front and, as soon as it s...

HL-39983392

USB-C PD Hub PCB Design

I’m ready to move from concept to production on a compact USB 3 hub built around a USB-C upstream port with full Power Delivery negotiation. The board will be c...

HL-39983344

Motion-Detecting Anti-Suicide Fan

I’m putting together a small proof-of-concept fan that shuts itself off the moment motion is detected near the blades, demonstrating a simple yet effective anti...

HL-39983306

Battery Anti-Suicide Fan Prototype

I need a compact, battery-powered working model of an anti-suicide ceiling fan made primarily from plastic. The unit must demonstrate how the fan instantly stop...

HL-39983310

Battery Anti-Suicide Fan Prototype -- 2

I need a compact, battery-powered working model of an anti-suicide ceiling fan made primarily from plastic. The unit must demonstrate how the fan instantly stop...

HL-39983095

Dual-Size Arduino Nano Control PCB with Schematic and Circuit Design -- 2

I need a compact, two-variant PCB built around an Arduino Nano, an XBee S2C radio module, two potentiometer-driven analog inputs, two stepper motor drivers, and...

HL-39982409

Smart Home IoT Lighting Developer

I'm seeking an experienced IoT hardware developer to create smart home devices. The main functionality will be lighting control. Requirements: - Develop smart h...

HL-39981736

Craft Technology Opinion Blog Post

Need a well-structured blog post that takes a clear stand on a current technology issue. The piece must read as an opinion article, not a tutorial or news brief...

HL-39981626

Capacitive Touchpad PCB Design

I'm looking for an experienced PCB designer to create a capacitive touchpad with 4 simple touch detection inputs. The touchpad dimensions should be 2 inches by...

HL-39980770

Designing a fully-differential Miller compensated two-stage opamp with CMFB.

Goal You are tasked with designing a fully-differential Miller compensated two-stage opamp with CMFB. This opamp will be eventually used to form an inverting am...

HL-39980628

Arquitetura de Processador MIPS 32-bits

Aqui está uma sugestão de descrição de projeto, otimizada para publicação em uma plataforma como a Freelancer.com, com base no documento que você forneceu. Títu...