Circuit Design Jobs

Smart Grip is a connected hand-grip trainer that measures grip force with a load cell. I need an experienced electronics engineer to take it from a finalized BOM to a tested prototype board: schematic, 4-layer PCB, JLCPCB manufacturing files, and hands-on bring-up of the first boards. This is not a blank-page project. After an NDA you will receive: - System specification and finalized BOM for 11 functional blocks, with LCSC part numbers, stock and price checks - Power budget report: sleep, active and peak current per rail - 49-page engineering test report: 3 load cells tested on a bench with the HX711 (noise, zero drift, linearity, hysteresis, repeatability, dynamic cycling). Result: GO WITH CONDITIONS - Preliminary BOM for the sensor, display, battery and haptic parts - Proof-of-concept ...

I need a skilled electrical engineer who can produce clear, code-compliant circuit schematics and detailed layouts for both residential and commercial projects. All drawings must be created in AutoCAD Electrical and Cadmatic, keeping the two files fully aligned so that edits in one platform are reflected in the other. Scope of work • Create single-line and full schematic diagrams. • Develop plan-view layouts for lighting, power distribution, and security systems. • Annotate every drawing with wire sizes, breaker ratings, load schedules, and panel references. • Deliver native DWG and Cadmatic files plus PDF issue sets. What I’m looking for • Proven experience with AutoCAD Electrical and Cadmatic on residential and commercial jobs. • Familiarity ...

1. Project Overview & Architecture The goal of this project is to design a set of modular, decentralized expansion PCB boards for grow tent automation. Instead of a rigid central mainboard, each expansion board functions as an independent node powered by a localized ESP32-C3 Supermini module, communicating via Wi-Fi/MQTT through ESPHome into Home Assistant. To reduce clutter and eliminate the need for multiple external power supplies, all boards will share a common power distribution concept: 12V DC Input (via standard 5.5x2.5mm barrel jacks or terminal blocks) with onboard step-down regulation (e.g., Buck converters) to supply 5V and 3.3V where needed, allowing a single 12V barrel power supply to be daisy-chained across boards. 2. General Requirements for All Boards Microcontroller: ...

# TECHNICAL REQUIREMENTS ## VHF SAME Receiver and AFSK/FSK Demodulator **Document:** RT-RF-SAME-001 **Revision:** 1.1 **Application:** EAS-SAME/SASMEX Signal Receiver **Target Frequency:** 162.425 MHz **Operating Band:** 162.400–162.550 MHz --- ## 1. OBJECTIVE Design and develop an electronic module capable of receiving the VHF signal at **162.425 MHz**, demodulating the NFM transmission, recovering the baseband signal, and demodulating the **AFSK/FSK data used by SAME (Specific Area Message Encoding)**. The module shall cover the complete signal chain: **Antenna/RF Input → RF Filtering → VHF Receiver → NFM Demodulation → Baseband Conditioning → AFSK/FSK Demodulation → Digital DATA_OUT** The final output shall be ready for connection to an extern...

This project strictly requires hands-on prototyping, including physical assembly and testing—design-only services will not be considered I already have detailed winding diagrams, coil counts, wire gauges, and a full wiring schematic for three compact electromagnets—each under 10 cm in any direction. Your task is to turn these drawings into a tangible proof-of-concept and ship it to me. The magnets will sit in a custom harness. I’m leaning toward a light alloy or other metal solution, but I’m open to your recommendations once you see the design constraints. All electronic components, fasteners, and raw materials will be reimbursed at cost; please keep receipts. Power can come from batteries, a small AC supply, or a rechargeable pack—I’m happy with which...

A compact double-layer board in one of my units has started to misbehave and, unfortunately, the original CAD files are long gone. I still have a clean schematic with every part ID called out, so the information is there—it just needs to be turned back into a full set of manufacturing data so I can isolate and fix the fault. Here’s what the assignment entails. I will provide high-resolution photos of both sides of the board together with the schematic. Trace the copper, match every net to the schematic, and rebuild the layout exactly as it sits today. Deliverables: • Editable schematic aligned with the physical board • Fault-analysis notes pointing to likely trouble at power input Freelancers are required to provide a budget estimate based on images supplied. Once ...

I am looking for an experienced power electronics engineer or engineering team to design a residential-scale hybrid solar inverter for commercial production. The project involves developing a single-phase, 230 V AC, 50 Hz pure sine-wave hybrid inverter that integrates rooftop solar panels, a lithium battery bank and the utility grid. The design should prioritise high efficiency, reliability, safety and ease of manufacturing. I prefer an engineer with previous experience designing working solar inverters, grid-connected converters, MPPT controllers and bidirectional battery systems. An existing, validated reference design that can be licensed or transferred is preferred. 1. Target Specifications Rated power: 1–5 kW continuous AC output: 230 V RMS, single phase, 50 Hz Output wave...

Complete Layout review of a 12 Layer PCB

Status: Schematic is finalized — layout work only (with expert schematic/BOM review). Project Overview I need an experienced PCB designer to create the PCB layout for a small precision encoder module with Bluetooth Low Energy (BLE) connectivity. The complete electronic schematic and BOM are already defined; your task is the board layout, design review, and preparation of full manufacturing data. A schematic review is required to confirm correctness before placement begins. Board Architecture: The board contains two functionally independent sections, which must be physically separated to avoid mutual interference: - Encoder section: STM32G474 microcontroller and its supporting peripherals, two AM26LV32E differential line receivers and ESDA6V1SC6 ESD protection device. - Bluetooth se...

I have an ESP32-based circuit fully wired and documented in a handful of clear .png images. What I need now is a clean KiCad project that turns those pictures into a proper electronic schematic and a ready-to-fabricate PCB layout my daughter can actually build and use for her college assignment. All the parts, net names, and pin connections are already settled in the images, so there is no component selection or electrical guesswork—just accurate translation into KiCad. Because the board will be assembled and deployed, please route it as a real-world, functional design rather than a classroom illustration. Standard IPC constraints aren’t mandatory; feel free to apply your usual good-practice defaults unless you spot something that obviously improves manufacturability or reli...

Project Title: Active Power Filter for EV Charging Station – MATLAB/Simulink + Hardware Prototype Project Description: I am working on my graduation project, which is an Active Power Filter (APF) for EV charging stations, and I am looking for a Power Electronics Engineer to help me with both the simulation and practical hardware implementation. The project includes: * 3-phase Active Power Filter design * MATLAB/Simulink modeling and simulation * Control strategy and controller design * Harmonic compensation and THD reduction * DC-link design * Power semiconductor switches and gate drivers * Current/voltage sensing * Protection circuits * Filter component selection * PCB design * Hardware prototype implementation * Testing and troubleshooting * Comparing simulation results with ex...

Here’s a cleaner version updated for a Combo Walk-In Cooler & Walk-In Freezer project: We are a commercial refrigeration and HVAC company seeking an experienced Electrical Designer / Control Panel Designer to create professional electrical drawings for a Walk-In Cooler & Walk-In Freezer Combo system controlled by PLC. The project includes complete electrical design and drawings for the PLC Control Panel, Walk-In Cooler, and Walk-In Freezer. The electrical design should include: Evaporator units and evaporator fan controls Electric defrost heaters Drain heaters Refrigeration solenoid valves Temperature sensors Termination Sensor Door switches and safety controls Contactors and control relays Circuit breakers and fuses Control power supplies PLC digital inputs and outputs...

I already have the architectural floor plans and my own annotated sketches in PDF; what I now need is a clean, construction-ready electrical layout. Please take my mark-ups, transfer them onto professional plans, and double-check that the proposed lighting circuiting actually works for a residential setting. Alongside the lights, I also want you to layer in data outlets, general power points, and CCTV camera locations. Some of these positions are already sketched, others will need your practical advice so the electrician receives a layout that is both code-compliant and sensible to install. Expected deliverable: a coordinated set of PDF drawings (and DWG if you work in AutoCAD/Revit) clearly showing lighting symbols, switching, circuit numbers, data outlets, GPOs, and CCTV points, re...

We are looking for an engineer team which has a good PCB design skill with motor driver knowledge and experience with good programming skill. This project is to upgrade our current PCB(Old prototype: having some issues) to update version. We will make one prototype PCB to test. This machine has the following system: 1x main CPU (GD32F450IGH6) 1x AC motor inverter (RS485) Command input 1x sensor Up to 5x stepping motor ( synchronized, need fast movement)　 Up to 5x sensor 1 x DC motor 1 x sensor 1 x SBC( RPI) need to connect to main CPU ( need to have fast communication ) 3 x stepping motor 3 x sensors 1 x DC brushless (small ) 2 x stepping motor 3 x COM to other device Ethernet We will send the current prototype PCB info induvidually when we decide to proceed. Current prototype ...

My BMZ Power2Go Work portable power station—just 14 months in service—shut down abruptly while delivering a steady 1 600 W load (it is rated for 2 500 W continuous, 3 600 W peak). Since that moment it refuses to charge or power on; every status LED remains dark. I need a battery technician who can carry out a full diagnostic and bring the unit back to life. That means opening the enclosure, verifying cell health, checking the BMS, charger circuitry, DC-AC inverter stage, and any internal fuses or relays. Once the fault is identified I want the defective components replaced or rebuilt so the pack can once again charge fully and supply its original output ratings without thermal or voltage irregularities. Deliverables: • Detailed test report outlining root cause, measureme...

Hello PCBWay, I need you to design and supply a fully assembled, programmable PCB for a battery-powered motion recorder. I do not have a schematic and cannot solder components myself. Please check whether an existing design could be adapted to reduce the cost. **Shape and size** - Rectangular PCB with rounded corners. - Standard credit-card dimensions: 85.60 × 53.98 mm. - Keep the PCB and components as thin as practical. - A separate flat LiPo battery will sit behind the PCB. Please keep the battery area clear of tall components. **Hardware** - A low-cost, low-power microcontroller that I can program myself. - An onboard 3-axis accelerometer and 3-axis gyroscope. - Two assembled push buttons: 1. Power on/off. 2. Start recording; press the same button again to stop and save. - One pro...

Custom compact PCB derived from the Arduino Nicla Vision hardware architecture Main MCU: STM32H747 Retain:- GC2145 camera - IMU - Wi-Fi/BLE - external flash/memory required by the original design - USB programming/data - battery charging - battery monitoring/power management Remove:- onboard microphone - onboard VL53L1CB ToF sensor - unnecessary expansion/connectors not required for the final product Add PONO TSD50 LiDAR- UART communication - dedicated power supply - 4 solder pads: VCC / GND / RX / TX Battery:- 1S Li-Po - approximately 350 mAh - battery remains permanently connected One momentary push button for:- system power ON - controlled shutdown/OFF One USB port must support:- battery charging - firmware programming - USB communication Battery must be able to charge even when t...

I need a production-ready PCB for an industrial ranging device that will be integrated into larger automation machinery on our factory floor. The board has to combine three core capabilities: robust signal processing of the sensor data, reliable high-power outputs to drive downstream actuators, and on-board wireless communication for status reporting and firmware updates. The footprint must stay within 80 mm × 60 mm, operate from a 24 V DC rail, and meet industrial EMC/EMI standards (EN 61000 family). A multilayer stack-up with controlled impedance traces for the RF section is expected, along with generous creepage/clearance on all high-current paths. Deliverables • Schematic (Altium or KiCad) • Fully routed Gerber/ODB++ files ready for fabrication • Annotated ...

## Senior PCB / Electronics Engineer – Independent Final Review of Completed KiCad Board I am looking for an experienced electronics/PCB engineer to provide a **final independent second opinion** on a completed 4-layer PCB before I manufacture the first five assembled prototypes. **Budget: approximately £20–£30 fixed price.** This is **not a design-from-scratch job** and I am not expecting a lengthy formal engineering report for this budget. What I want is an experienced engineer to spend some focused time reviewing the completed design, identify any obvious or serious remaining risks, and tell me whether they would personally be comfortable sending the board for manufacture. ### Current status The board is **SP-MB1 Rev B.1** and has already undergone extensiv...

I need a complete electrical design for a true-online 600 W UPS that will operate in a home environment. The scope covers everything from the high-level architecture down to production-ready documentation, so that I can have the unit prototyped and assembled without further engineering work. What I expect you to produce includes: • Full schematic with clearly annotated component values • Bill of materials using readily available parts • PCB layout files (Gerber or equivalent) and 3-D board view • Control logic or firmware source (if a microcontroller or DSP is used) • Mechanical outline showing heat-sink placement, transformer or inductor dimensions, and suggested enclosure size • Brief test plan describing how to verify continuous 600 W output, transfer time...

I am looking for an experienced Electronic Engineering Freelancer to design a custom, compact, all-in-one PCB for a premium adult collectible display base. The board will be manufactured using standard Turnkey PCBA (automated assembly), so the design must utilize readily available components from standard libraries (such as JLCPCB / LCSC component libraries). Core System Requirements: 1. Microcontroller Core: Integrated ATmega328P-AU (TQFP-32 surface mount package) with a 16MHz crystal oscillator and supporting circuitry. Programming/power interface must be a surface-mount USB Type-C port linked via a CH340G/C serial converter chip. 2. Power Architecture: Direct 5V DC power delivery completely driven over the Type-C USB interface (bypassing battery circuitry entirely). Must include a surfa...

I need a simple, single-board PCB layout created from an already completed and fully tested Fritzing (.fzz) project. The circuit logic, components, and pin mappings are 100% verified on a physical breadboard. This is a very quick micro-task for an experienced electronics engineer. The design is an ultra-low-power Smart Irrigation Sensing Node using an all-3.3V power architecture. Key Specifications & Pin Mapping: • Microcontroller: Arduino Pro Mini (3.3V variant) • Radio Module: LoRa Ra-01 (Antenna area must be kept completely clear of copper traces and ground planes). Pin connections required: NSS to D10, RST to D9, DIO0 to D2, plus standard hardware SPI lines (D11, D12, D13). • Power Input: Direct 3.2V LiFePO4 Battery connection to the Arduino VCC rail (Bypassing the ...

We’re looking for an experienced PCB designer with strong expertise in EMC-conscious layouts and safety standards. The schematic, reference images, and mechanical requirements are already available. We need a clean 4-layer PCB layout (approx. 170 × 93 mm). The board includes 230V mains and low-voltage sections, so proper clearance/creepage distances, design rules, GND/VCC planes, and an EMC-conscious layout are important. Experience with Surge, EFT, and ESD protection would be great. The project is urgent, requiring completion by next week.

I’m starting this project from a blank canvas and need a skilled PCB designer who can take my functional requirements (which I’ll share once we kick off) and turn them into clean, production-ready documentation. The board must be a double-layer design populated exclusively with surface-mount parts, so tidy routing, tight footprints and thoughtful component placement are essential. Your first task is to build the full schematic from scratch, validating part choices along the way. Once the schematic is locked, translate it into a compact two-layer layout that respects standard DFM guidelines and any component-specific recommendations in the datasheets. Deliverables I expect: • Complete, well-annotated schematic file (Altium, KiCad or Eagle—whichever you work fastest ...

pcb desinigng around SoC and have experience in VR headset development