Circuit Design Jobs

I’m opening up a Score 7T (Keefe Group) tablet built on the MediaTek MT8168, board id tb8168p1_bsp, and I need to force it into BROM mode by shorting the correct test points on the motherboard. I’ve done a few hardware-point jobs before, so I understand basic safety and ESD practice, but I want to follow an exact, proven sequence this time. What I expect from you • A clear, step-by-step set of written instructions—my preferred format—covering disassembly, test-point identification (CLK/DAT0 or any pad combination that actually works on this board), timing of the short, and verification with mtkclient. • High-resolution reference photos or annotated diagrams of the Score 7T PCB highlighting the precise spots to short. • Any firmware-side preparati...

I want to make a dissertation project on EV charger with some topology and control scheme with adaptive current control

I'm seeking an experienced developer to create a wearable LED suit for professional stage performances. The suit should be controlled by ESP32 controllers and feature WS2812B addressable LED strips and side-glow fiber optics. Objective : Building LED-embedded costumes synced to music beats using Raspberry Pi and XLights. Each costume will have one Raspberry Pi 4 (slave), connected to 4 or more customized relay/driver boards—each controlling a specific body zone (head, arms, chest, legs). We need help configuring GPIO outputs via FPP and customizing the relay/driver boards to handle high-power LED/fiber optics/LED cloth sheet outputs, with independent control of lighting patterns for each zone. The setup must respond to a central master Pi broadcasting music-synced commands wir...

Seeking KiCad PCB Project Archives for AI Training Dataset We are looking for PCB designers, engineering teams, freelancers, and PCB design companies who have existing archives of KiCad PCB projects that they own and may be interested in licensing for AI training and research purposes. We are not looking for new PCB designs or any additional engineering work. We are specifically interested in old, completed, inactive, or archived KiCad projects that are already available. #Requirements - Minimum preferred volume: 100+ KiCad projects - Projects must be created in KiCad only - Editable source files are required - Schematic and PCB layout files should be included - Projects must be your own original work, or you must have the legal right to provide/license them - Projects must not be take...

As you can check in the document attached, the pcb shall have the MCU, micro sd card, rs-485 communication and the IOs as mentioned.

I'm looking for an experienced power electronics engineer to design, build and test a single-phase synchronous buck power stage using GaN FETs. This is a test vehicle, not a product. The purpose is to measure switching behaviour, losses and temperature at high switching frequency. The scope is deliberately short and well defined. The work Single-phase synchronous buck, up to 40 A, outputs at 12 V and 48 V from an 80–120 V bus Power devices: EPC2305, two in parallel per position Gate driver: onsemi NCP51820 The design must be based on EPC's EPC90143 development board, extending its schematic and layout to the paralleled devices. EPC publishes the schematic, BOM and Gerber files Four-layer PCB, with the power loop returned on the first inner layer per EPC's layout guida...

My current audio board is built around a single amplifier stage and, while it works, the mid-range comes out sounding strained and unnatural. I want to retrofit an Automatic Gain Control IC that includes or works alongside an A/D converter so the signal path is cleaner, background noise is lower, and those mids finally feel organic. Here’s what I need from you: • Select an appropriate AGC-equipped converter (or discrete AGC + standalone ADC) that plays nicely with the existing amplifier stage and overall supply rails. • Provide a concise schematic showing how the new IC drops into the signal chain, including any necessary attack/release timing components, input protection, and level-shifting. • Supply a brief BOM with part numbers that are in stock from at least ...

I need a seasoned power-electronics engineer to take my concept for a small, isolated flyback switching power supply and turn it into a production-ready design for a consumer-electronics product. The supply must accept 230 V AC nominal but remain stable across the full universal range of 85–265 V AC. On the secondary side I want three rails—12 V, 5 V, and 3.3 V DC—sharing roughly 3–4 W total. Exact current splits can wait until you help me finalise the power budget. Compact size is the top priority, so I expect smart component selection, tight transformer design, and a PCB layout that keeps both footprint and height to an absolute minimum while still meeting creepage, clearance, and EMI/EMC requirements. Although efficiency and low standby losses matter (this will ...

I'm seeking an experienced Arduino developer to create a working robotics project for my final course requirement. The robot needs to navigate using obstacle avoidance and display status with LED indicators. Requirements: - Functionality: Obstacle avoidance - Components: Use of ultrasonic sensors - Information display: LED indicators Ideally, you should have: - Expertise in Arduino programming - Experience with ultrasonic sensors - Knowledge in robotics and obstacle avoidance algorithms - Ability to integrate LED indicators for status display Please ensure that the final product is fully functional, not just a theoretical design. everything should come from your SparkFun Inventor's Kit (SIK)

I have a batch of 51-100 boards that need careful through-hole soldering, plus a small run of matching wire harnesses and a few damaged PCBs that require touch-up repair. All components are already sourced and labelled; I simply need steady-handed assembly and inspection so everything leaves my shop fully functional. You’ll be working with both through-hole parts and SMD repairs down to 0603 size, so solid joint quality, clean lead trimming, and consistent flux cleanup are vital. After soldering, each board must pass a quick continuity and visual check before you move on to the next. The wire harnesses are straightforward crimp-and-solder leads that plug directly into these boards, and I’ll provide the pin-out diagrams. Deliverables: • 51-100 fully soldered, tested throu...

Hi I will share the details with the shortlisted candidates. Thanks

I'm looking for a skilled electronics designer to create two custom circuit boards for a car. Requirements: 1. Steering Wheel Control Board: - Manage cruise control and 20+ reprogrammable gameplay buttons. - Must be reliable and responsive. 2. Shifter Position & Power Functions Board: - Handle shifter position data. - Control power functions to manage other circuit boards. Ideal Skills: - Experience with automotive electronics. - Proficient in circuit design and PCB layout. - Familiarity with microcontrollers and input/output handling. Please provide samples of previous work and a brief outline of your approach. Must be in a small form that does not exceed the size larger than 8 inches ( Similar layout to a 2018 Chevrolet Silverado LT steering system + shifter la...

I'm seeking a skilled PCB designer to create a compact PCB for digital inductive proximity sensors. The design must prioritize noise reduction and temperature stability. Key requirements: - Small form factor - High noise reduction - Excellent temperature stability Ideal skills and experience: - Expertise in PCB design for digital sensors - Experience with noise reduction techniques - Knowledge of temperature stability in PCB designs - Proficiency in relevant design software (e.g., Altium, Eagle) Please provide examples of similar work and a brief plan for this project.

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...

Necesito un esquema y PCB completos en EasyEDA que integren los siguientes módulos y funciones: • Slot compatible para los módulos Lilygo SIM7000G y A7670SA. • Dos INA219 independientes: uno para medir la batería y otro para el panel solar. • Regulador de carga solar MPPT CN3791 para paneles de 6 V (entrada dedicada). • Sensor ToF VL53L1X integrado en la placa más un conector para una versión externa. • Cargador de batería basado en TP4056 con sus protecciones. • Conector para batería 18650 y, adicionalmente, para batería Fanso. • Encendido controlado mediante reed switch y MOSFET. • Elevador MT3608 fijado a 5 V. Dimensiones deseadas de la tarjeta: 110,54 mm × 32,89 mm (pue...