Circuit Design projects — HireLancer archive

ID / Date Listing

48V 150A DC Converter Design

I need a straightforward, component-level design for a high-current buck/boost converter that can take 16 V – 60 V DC and deliver a stable 48 V output at up to...

HL-39882467

Single-Family Home Electrical Plan

I have a complete set of architectural drawings for a new single-family house and now need a detailed electrical plan to match. The job is straightforward: lay...

HL-39880428

400W BLDC Controller and Motor Solution Design

I need a production-ready hardware solution that lets a 400 W BLDC motor run smoothly from 0 rpm up to 250 rpm while maintaining full torque across the entire r...

HL-39878280

Experienced PCB Design Engineer Needed

I need a skilled engineer to take my concept from schematic capture all the way through a finished, manufacturing-ready PCB layout. The design details are open...

HL-39877693

Single-Layer PCB Layout

I have a very small board—just three components in total—that I need laid out on a single-layer PCB as quickly as possible. Two of the parts are SMD, one is thr...

HL-39877475

Piezo Igniter for Oxy Acetylene

I need a reliable piezo-electric system that will consistently ignite oxy-acetylene for welding, cutting, and heating tasks. (Note the tool and concept actually...

HL-39877262

DP4T MEMS Switch Layout Fabrication

I’ve completed the concept phase of a DP4T (double-pole, four-throw) MEMS switch and am now moving into detailed work. My immediate need is a clear, manufacture...

HL-39876917

Main electronics card

I have a full specification package and SOW ready that outlines a compact electronic card devoted to managing heat inside a consumer-electronics product. The fo...

HL-39876350

Simple Gerber PCB Layout

I need a straightforward PCB layout delivered as production-ready Gerber files for a small final-product board. The circuit is minimal—three transistors, four r...

HL-39876083

Industrial Machinery Wiring Setup

I need a qualified electrician to re-wire new manufacturing equipment inside our industrial facility. The job is strictly for machinery—not general lighting or...

HL-39875519

Double-layer PCB Design

I'm making a Arduino mega pcb shield. The pcb should be easily compatible with Arduino mega through the pins. I have made the schematic for it. You can review i...

HL-39875379

Custom PCB for Very Simple Dual Pump Control

I need a small, custom-designed PCB board to control two small pumps for a liquid distribution system. The pumps will handle water and will be operated using a...

HL-39873249

Mini-Split Electricity Hook-Up

I need to connect electricity for a mini-split unit in a residential home. The unit will be located outside the house, so the wiring setup will need to be arran...

HL-39873292

Модификация Huawei: ультратонкий модуль

Задача состоит в физической модификации смартфона Huawei, серии от P40 до P70. Основная цель — создать ультратонкий модуль камеры, сохранив только основную каме...

HL-39873135

Electronics Prototyping for Home Appliance

I am looking for an experienced electronics engineer to assist with the prototyping and testing of a home appliance consumer product. The focus is on refining t...

HL-39872965

Adafruit Flora Fire Animation

I need assistance programming 4 Adafruit Flora boards to control 4 small groups of wearable LED strips. The goal is to create a realistic moving fire animation...

HL-39872674

Home Lighting Troubleshooting

I need assistance troubleshooting and repairing lighting fixtures and switches in my home. I have installed new wiring in the basement and having issues with th...

HL-39871848

Band-Pass Microstrip Filter Design

I need a band-pass microstrip filter designed to cover a specific frequency range between 2.5 GHz and 3.5 GHz. The focus is on ensuring optimal performance with...

HL-39871566

Signal Processing Amplifier Repair

I have a signal processing amplifier board that is not providing any amplification or signal output. I am looking for an expert in India who can urgently repair...

HL-39871602

High Current PCB Layout Design

I need an experienced PCB designer to create a high-current PCB layout specifically for industrial equipment. The design should be capable of handling currents...

HL-39871308

Design Valve Controller PCB

Valve Controller PCB Requirements v2.0 – Agriscience Aligned Project: Agriscience IoT – Smart Valve Controller Node Goal: Design a solar-powered, low-power, LoR...

HL-39870161

Class D Amplifier and PSU Design

Project: Design & Prototype of Class D Mono Amplifier (600W & 800W) with Matching Power Supply We are seeking an experienced Electronics Design Engineer to deve...

HL-39868443

PCB Design Expert Needed

I need an experienced PCB design expert to assist with a personal project. The task involves designing and finalizing a high-quality PCB layout according to spe...

HL-39868015

AI-Savvy Audio Engineer Needed

I’m looking for an audio engineer with expertise in AI to collaborate on a project for a new enterprise I’m starting. Your role will involve combining advanced...

HL-39867003

Smart Pillbox with Bluetooth Notification System

I need a smart pillbox that detects when medication is taken and sends a Bluetooth signal to an app. Key Requirements: - Hall sensor to detect pill removal - Bl...

HL-39866547

Battery LED Strand Circuit Design

I’m building a series of artistic panels that each hold several short strands of low-voltage LEDs. I need a straightforward, battery-powered circuit that lets m...

HL-39865414

Pulse Generator Design & Prototype

I’m starting from a purely conceptual sketch and need a complete design-through-prototype of a programmable pulse generator that sweeps from 1 Hz up to 4.4 GHz....

HL-39864164

Residential Panel Load Calculation

I need a precise load calculation for a single electrical panel in a residential property that is 2,963 square feet. The goal is to confirm that the existing pa...

HL-39863065

Embedded Hardware & Software Overview

I need a clear, educational report that introduces the fundamentals of embedded systems, focusing specifically on two pillars: hardware design and software arch...

HL-39862110

KiCad 9 PCB Corrections

I have an existing KiCad 9 design for a small 45 mm × 45 mm board carrying four ICs. In the schematic two minor changes were made and the footprint of Berg Pin...

HL-39861565

24 V Battery PCB Power Hub

Input Connections: 24v (from battery) 24v power input for charging 5v Output Connections: Raspberry Pi 5 Raspberry Pi 4 Network Switch Cooling Fan 24v Output Co...

HL-39860960

Laser Modulator Troubleshooting Support

I’m working with a MESSTEC VFM 10-25 fast current modulator to switch a laser diode on and off, but the diode isn’t responding at all. Power supplies are stable...

HL-39859882

Simple DAC Integration on PCB

I have a simple, already-routed PCB that needs one last feature before I can send it to JLCPCB: a single-channel digital-to-analog converter (DAC) capable of dr...

HL-39859611

Wearable Medical Device | Electronics System Architect

I am outlining a new, ultra-low-power wearable that centres on health monitoring. The core features I must enable are continuous heart-rate, blood-oxygen (SpO₂)...

HL-39857989

Smarthome PCB Layout Schaltplan

Hallo, ich benötige ein PCB-Design (Schaltplan + Layout) für eine ESP32-C3 Fernbedienung. TECHNISCHE DATEN: Hauptkomponenten: - ESP32-C3 Super Mini - 36x Tactil...

HL-39858000

Building a 100W Amplifier Prototype, 14-24 Ohm, 1kHz-500kHz

The task is to build a prototype of an amplifier using transistors (or operational amplifiers). Specifications: • Frequency response: 1 kHz - 500 kHz (maximum 2...

HL-39857133

Custom 40A ESC Design

MinaProject Details $250.00 – 750.00 USD I fly F5J competition gliders and the commercial controllers on the market still cost me precious grams. I’d like you t...

HL-39857144

3-Phase NPC Inverter Design

I'm looking for an experienced electrical engineer to design a 3-phase NPC inverter with a power rating of 500W. This inverter will be used primarily for a labo...

HL-39857020

Basic Engineering Schematics

I need 2D engineering schematics created. I need about 3 drawings, one is a carpark another is a map view of some roads. Both I already have drawn out on paper...

HL-39856476

Power Fault Sequence Networks & Phasors

I am wrapping up a protection study and need clear, textbook-quality sequence-network diagrams for every common unbalanced fault—single-line-to-ground, line-to-...