Circuit Design projects — HireLancer archive

ID / Date Listing

Rectangular Tattoo Machine PCB Design

I’m building a compact, battery-powered tattoo machine and need a custom rectangular PCB that can both manage the lithium-ion power source and drive the rotary...

HL-40560191

Advanced STM32 Motor & Heater Control Production

STM32 BLDC Motor + Heater Controller — KiCad Schematic, PCB, Gerbers & BOM (Production) Project Description (paste this) I need an experienced hardware/PCB engi...

HL-40559911

Solar Panel Curtain Prototype Development

I’m looking for a freelancer in Delhi NCR who can help design and build a small working prototype of a flexible solar panel curtain or Venetian blind system for...

HL-40559840

Double-Layer PCB Design for Gadgets

I’m developing a new consumer-electronics device and I need a reliable double-layer PCB designed from the ground up. I will supply the schematic on paper. The p...

HL-40559669

Miniature OTP Voice PCB Design

I’m building a small toy that plays a single prerecorded sound. To make this work I need a PCB design built around the OTP voice chip, a LiPo battery with its r...

HL-40559688

Onboard China ODM/PCBA Vendor

I’m ready to move an industrial-grade controller board from 50K units to 500K Units production and need a China-based ODM and PCBA house that can step in, refin...

HL-40559393

BPSK Circuit Layout & Simulation

I already have the parts list and basic idea for a Binary Phase-Shift Keying circuit, but I need a clear schematic that shows every component in its proper plac...

HL-40558976

ESP32 CNC Industrial-Grade Display Design

ESP32 CNC Display Unit — PCB Schematic, Layout, BOM & Aluminium Enclosure Design (Industrial IP54) Designing a Smart CNC Machine Display Unit for industrial sho...

HL-40558487

Large PCB Routing in Fusion

The schematic is locked down, the netlist is clean, and a complete BOM is already in place—I simply need the board itself routed inside Fusion 360 Electronics....

HL-40558156

ESP32 Triac Board Review

I have an ESP32-based board that drives a triac and includes an on-board AC-DC converter. The existing schematic shows clear wiring mistakes, questionable compo...

HL-40557905

Finalize GR5513 RF Board Design

I already have a near-complete Bluetooth LE board built around the Goodix GR5513. The digital section is proven, but the RF side still needs refinement before I...

HL-40557321

Powercon-Neutrik Connector Reconfiguration

I require assistance in connecting the Powercon cables to the equipment terminals on the Neutrik audio equipment. Important Prerequisites: Experience with Power...

HL-40557341

Powercon-Neutrik Connector Reconfiguration -- 2

I require assistance in connecting the Powercon cables to the equipment terminals on the Neutrik audio equipment. Important Prerequisites: Experience with Power...

HL-40557231

PowerCon Lead Soldering (Melbourne)

I have two blue Neutrik PowerCon A-type connectors and one grey B-type in hand, together with the AC extension leads they need to be attached to. The job is str...

HL-40556642

Custom PCIe Interposer Board Schematic Creation

I need an electronics engineer to create a schematic capture (in EasyEDA or KiCad) for a custom PCB, based on detailed documentation and a diagram I will provid...

HL-40556534

Embedded Systems Engineering Support

Project Description – Smart Buffalo GPS Collar (Prototype) Project Overview I am building a smart GPS collar for buffaloes that uses virtual fencing (geofencing...

HL-40556317

Raspberry Pi 5 Multifunction HAT Design

We're building a compact Raspberry Pi 5–based dual-HDMI capture & USB-peripheral appliance (a remote KVM / screen-capture device). Today it's an assembly of off...

HL-40555451

ESP32 Auto TPMS Gauge Development

ESP32-Based 52mm TPMS Gauge (433 MHz Sensors + Custom Display UI) Description: I need a small embedded systems developer to build a standalone automotive TPMS g...

HL-40555210

Relay Removal PCB Redesign

I have a finished PCB for an embedded controller and now need a precise edit: two signal relays (IC13 – IMB03CGR and IC14 – IM03GR) must disappear, with their s...

HL-40554241

Review & Verify Medical Device Power Supply Schematic Before PCB Layout

I need an experienced Power Electronics / Hardware Design Engineer to review and verify my medical device power supply schematic before PCB layout. This is not...

HL-40553641

KiCad Designer for School Access Control System

Hi, I'm a student working on an access control system for our school's IT labs. We already have a working prototype and the firmware/software side handled — wha...

HL-40553482

ESP32 Heating Controller Hardware Revamp

Existing incomplete design for an esp32 based heating control board. Needs several schematic and layout changes (KiCAD). -Add encapsulated mains PSU -Board supp...

HL-40553301

Custom PCB to Fit Enclosure

I am looking for an experienced PCB designer to design a production-ready PCB for a smart plant moisture monitoring product. Project Requirements The PCB must f...

HL-40553074

High-Voltage 2kV PCB Design with ADC/DAC

High voltage till 2kV with transformer and signal conditioning (ADC,DAC) on the same PCB with around 50 components, with 4 layer board

HL-40552979

Custom PIC16F877A Development Board Design

I'm excited to share one of my recent hardware design projects: a custom 4-layer PIC16F877A Development Board designed from scratch using Altium Designer. This...

HL-40552838

Home Solar Panel Schematic Design

I need a detailed electronic schematic for a consumer-grade home appliance: a compact solar panel unit that will power and manage small household loads. The goa...

HL-40552852

Smart Parking Disc Modification -- 2

Project Brief: Stealth-Modified Automatic Parking Disc (Certified for Public Road Use in Germany) Project Goal: I want to technically modify a certified electro...

HL-40552578

Dental Clinic Electrical Design Consultation

I am fitting out a new dental and medical center in Navi Mumbai and I need a complete electrical design package that I can hand straight to my on-site contracto...

HL-40551741

POE-Powered RS485 Sensor PCB

I need a compact, production-ready PCB that lets me power a 12 V DC / 200 mA RS-485 sensor directly from a PoE network drop and expose its data on the same Ethe...

HL-40551402

Small-Scale PCB Design

I'm looking for a skilled PCB designer to create a small, mixed-component PCB for a consumer electronics device. i need the pcb to converter and power my 12vdc...

HL-40551320

PCB Design Update for Control Board

We’re reaching out to see if your team can support a PCB design update for an embedded control board we’re working on. We currently have a functional prototype...

HL-40551174

State Certified Residential Electrician

I need a state-certified electrician to tackle several residential tasks at my home. The work includes running new wiring where outlets are missing, diagnosing...

HL-40551255

PCB ESP32 Energía y Strobe

Necesito un diseño de placa basado en un ESP32 que gestione la energía del sistema, controle una luz estroboscópica y dispare una cámara. Trabajo con fuente de...

HL-40551054

ESP32-S3 Bicycle Race Timer Prototype

# Hardware Development – ESP32-S3 Based Bicycle Race Timer (Prototype PCB) ## Project Overview We are developing a rugged bicycle race timer based on the ESP32-...

HL-40551066

Diseño Eléctrico Integral Cabaña

Necesito un ingeniero eléctrico o electrónico certificado en Colombia que desarrolle el diseño eléctrico completo de una cabaña residencial. El alcance incluye:...

HL-40551079

Diseño Eléctrico Integral Cabaña -- 2

Necesito el diseño eléctrico completo para una cabaña que funcionará como propiedad de alquiler. El plano debe cubrir: • Alumbrado interior y exterior, tomacorr...

HL-40550955

Portable Rechargeable Lighter Circuit Design

I want a complete specialized electronic circuit that powers a reusable lighter. The goal is to replicate—or, if necessary, freshly create—the entire circuit so...

HL-40549088

Pyrolyser Distiller Wiring Diagram

I need a clear, professional wiring diagram for a residential-scale pyrolyser and distiller unit that I am assembling in my workshop. The schematic must show ev...

HL-40548848

Buying Ready-To-Use DIY Simple Electronic Project

I need a straightforward, fully-functional DIY project that I can assemble and demonstrate without extra troubleshooting. Any of the three domains—electronics,...

HL-40548400

Prototype PCB Layout (4-Layer)

I have a prototype in development and now need the PCB laid out so I can move quickly to a physical test board. The job centres on a moderate-complexity stack-u...