Circuit Design Jobs

I need a compact, production-ready PCB for a smart-home product that will sit at the heart of a Thread-based system. The board’s sole critical job is reliable wireless communication, so antenna placement, impedance control, and certification-friendly layout choices are paramount. Form factor is consumer-electronics grade: low profile, quiet on EMI, and ready for automated assembly. I already have a rough block diagram and key component shortlist (MCU with integrated 802.15.4 radio, matching network, voltage regulation, test points). You will turn this into a finished design that a contract manufacturer can drop straight onto their line. Please take the project through: • Schematic capture with all supporting passives and protection • Four-layer (preferred) RF-aware lay...

We are seeking a Senior Electrical Designer to support the design of advanced manufacturing facilities, including semiconductor manufacturing plants, data centers, and other high-tech industrial projects. This role is responsible for producing detailed electrical designs using AutoCAD and Revit MEP, including power distribution, lighting, fire alarm, and communications systems. The Senior Electrical Designer will coordinate closely with engineers and design leads while providing technical guidance and mentorship to junior designers. Responsibilities Prepare electrical designs and construction documents for advanced manufacturing and industrial facilities. Develop layouts, sketches, 2D drawings, and 3D models using AutoCAD and Revit MEP. Design electrical power distribution, lighting, fir...

I need a compact, production-ready PCB that accepts a single DC input and delivers three regulated rails—24 V @ 12 A, 12 V @ 12 A and 5 V @ 10 A—for an industrial-automation control panel. The board must keep those rails alive for roughly 5-10 minutes by automatically switching to a lithium-ion battery pack whenever the main supply drops. An onboard 8051 microcontroller will continuously sense input power, drive status LEDs and, when a brown-out is detected, shut the rails down in a defined sequence after the battery grace period. I will flash the MCU here, so please include well-commented source, compiled HEX and a simple serial or GPIO interface for configuration. Electrical safeguards are critical in the factory environment, so integrate robust overcurrent, overvoltage...

I’m building a new circuit in Autodesk Eagle and want an experienced Eagle user to look over my schematic, walk me through any weak spots, and suggest best-practice improvements before I move on to the board stage. The goal is a rock-solid schematic that is ready for PCB layout, free of hidden ERC errors, and organised with clear net labels, correct device libraries, and sensible part choices. Here’s what I need from you: • A shared review session (screen-share or annotated feedback) to examine the current Eagle *.sch file. • Actionable recommendations on component placement, net naming, and library management. • Corrections or edits made directly in the schematic file, returned to me with brief inline notes so I understand every change. • A short...

I’m developing a laboratory‐scale system for scientific research that needs a robust, constant-current pulsed power supply. The unit will take a 380 V, 50 Hz three-phase input and must drive a 2 Ω load with 400 A pulses, translating to about 800 V across the load during each shot. Pulse width has to be fully adjustable from 1 ms to 10 ms, with the operator able to select either a single pulse or a five-pulse burst every minute through software-controlled settings (no manual knobs). The job is split into two clearly defined stages: • Level 1 – Schematic & Magnetics: I need a complete circuit schematic, transformer and inductor calculations, protection strategy, and a verified simulation that proves the design meets current, voltage, and timing targets. Please wo...

I have a finished KiCad board that already works but now needs two extra sections added. First, I want the single 24 V AC input to feed a pair of regulated rails: 12 V DC and 5 V DC. I am open to either integrated buck modules or a fully discrete approach—whichever you feel gives the best balance of cost, efficiency, and board real-estate. Second, I need four relay channels that close whenever they see a brief 3.3 V pulse and route the incoming 24 V AC line to the load. I have no strong preference between solid-state or electromechanical devices and will follow your recommendation once you review the schematic and current requirements. You will receive the existing KiCad project, including schematic, layout, and the reserved pin locations for each new block. Placement is flexible, ...

I’m developing a new consumer home-appliance and need a specialist who can take my schematic concept and turn it into a production-ready PCB inside Altium Designer. Scope • Capture or clean up the existing schematic. • Lay out a compact, manufacturable multilayer board that fits the mechanical envelope I’ll share from Fusion 360. • Generate all fabrication and assembly outputs (Gerbers, drill, BOM, pick-and-place). • Export a STEP model so I can check the board in Fusion 360 before tooling. Key details • The board will sit in a plastic enclosure with tight clearance, so component heights and keep-outs must be respected. • It must comply with typical household appliance safety and EMI guidelines (basic insulation distances, filtere...

I need a double-layer PCB design for a consumer electronics radio project. Requirements: - Experience with double-layer PCB design - Knowledge in designing PCBs for consumer electronics - Flexibility to accommodate both SMD and through-hole components Ideal Skills and Experience: - Proficiency in PCB design software (e.g., Altium, Eagle, KiCAD) - Strong understanding of electronic components and circuit design - Attention to detail and ability to meet project specifications Project: **The device:** a small battery-powered IoT unit that stays in deep sleep almost all the time. It wakes on either a button press or an NFC card scan (whichever comes first), plays a short WAV file through a small speaker, and connects over WiFi. **On the board:** ESP32 SMD module, NFC reader with low-power ...

I need a complete schematic for an analog circuit that will be used in a signal-processing application. My focus right now is solely on the schematic stage—no board layout or routing is required at this point. You will start from a functional description that I will provide (target bandwidth, expected input/output levels, and available supply rails) and turn it into a clean, well-documented schematic that can later be handed off for PCB layout. Proper component selection, clear annotation, and ready-to-simulate design files are essential. Please work in a mainstream CAD tool such as Altium Designer, KiCad, or OrCAD—let me know which one you prefer so I can confirm compatibility. The final hand-over should include: • The editable source file in the chosen CAD format...

I need a double-layer PCB design for a consumer electronics radio project. Requirements: - Experience with double-layer PCB design - Knowledge in designing PCBs for consumer electronics - Flexibility to accommodate both SMD and through-hole components Ideal Skills and Experience: - Proficiency in PCB design software (e.g., Altium, Eagle, KiCAD) - Strong understanding of electronic components and circuit design - Attention to detail and ability to meet project specifications Project: **The device:** a small battery-powered IoT unit that stays in deep sleep almost all the time. It wakes on either a button press or an NFC card scan (whichever comes first), plays a short WAV file through a small speaker, and connects over WiFi. **On the board:** ESP32 SMD module, NFC reader with low-power...

I need a seasoned electrical / electronics engineer to take a voltage stabilizer for industrial equipment all the way from concept to a bench-tested prototype. The unit must accept anything from 200 V to 480 V on the input side. What I am expecting from you: • A complete schematic with component selections that balance reliability and cost. • Simulations (LTspice, PSpice or equivalent) that verify thermal behavior, transient response and overall regulation. • PCB layout files (Altium, KiCad or similar) ready for fabrication, with clear creepage / clearance and EMI considerations. • A detailed bill of materials, including alternative parts in case of supply issues. • Assembly and test procedures so I can replicate your bench results and move to pilot produc...

I need a small, rectangular board built around a CH522T micro-controller. The board will be USB-C powered, so please place a horizontal USB-C receptacle on one of the short edges for both power and data. Core features to integrate • CH522T at the heart of the design • One RGB LED driven directly from the MCU • One tactile push button for user events • A second tactile push button dedicated to entering the programming/boot mode What I expect from you 1. Schematic with all supporting components—clock, reset network, decoupling caps, ESD protection for the USB-C lines 2. PCB layout (Gerber/NC drill, pick-and-place, and a 3D STEP file) ready for immediate fabrication and assembly. 3. Complete BOM with manufacturer part numbers and at least one readil...

I will supply a complete schematic, dimensioned drawing, and parts list for a small 90 × 190 × 40 mm panel that holds four illuminated push-buttons, two status LEDs, a few relays/diodes, and screw-terminal break-outs for power plus two simple on/off inputs. Every component value, wire gauge, and mechanical placement is already locked down; there is no design work left to do. Your task is purely hands-on: build one fully-functional unit exactly to the drawings. I’d like the circuitry laid out on stripboard (or another point-to-point method you’re comfortable with), all joints soldered, and the harness inside the enclosure bundled neatly for strain relief and easy future service. The case itself should be plastic, as noted in the documents. Before shipping the finis...

I already have a complete schematic for my single-phase energy-monitoring circuit; what I need now is a production-ready PCB layout that faithfully follows it and fits the enclosure I have chosen. The board must match the exact outline and mounting-hole pattern of my reference enclosure, so you will get the enclosure model and mechanical drawings from me on day one. Once the layout is finished, I will need the full Gerber/NC drill set along with the editable design file so I can review trace widths, clearances, and layer stack-up before we send it to fabrication. Deliverables: • Complete, error-free Gerber and drill files • Native design file (Altium, KiCad, or similar—your choice) • Brief design report highlighting key layout decisions and any DRC/DFM notes ...

I need a square wave signal generator with the following specifications: Output Voltage: 12V Frequency Range: 100 kHz to 1 MHz Duty Cycle: Variable Additional Requirements: - 5-step switch for frequency selection - Compact design preferred Ideal Skills & Experience: - Experience with signal generation and electronics design - Proficiency in working with 12V circuits - Knowledge of variable duty cycle configurations - Ability to create compact and functional electronic devices Please provide schematics and ensure reliability at specified frequencies.

I already have the core parts on hand—two 5 mm 2-way pluggable terminal connectors, a 3510 bridge rectifier, four 4 700 µF / 35 V* electrolytic capacitors, a single 480 Ω or 2.2 kΩ 1 W resistor (we’ll pick whichever best sets the LED current once we confirm the DC rail), and a 5 mm indicator LED. What I need from you is a clean, dependable AC-to-DC power-supply design that delivers a regulated 24 V output. Here’s what I expect: • A clear schematic showing the full rectification, smoothing, and regulation stages that make best use of the components above • Component value checks and any minor additions (for example, bleeder resistor, snubber, or simple linear regulator stage) to keep ripple and heat within safe limits • Brief notes on ...

I need a compact PCB that triggers an MFA90A thyristor shortcircuiting a PV string (300 V DC). The board’s purpose is to short-circuit the PV panel and automatic re-triggering whenever both the control relay is set and PV voltage are present (during day, after night) Key technical notes • Input: PV string voltage ~300 V DC, so an on-board regulator must generate a stable low-voltage rail for the gate-drive circuitry and logic. • Switching device: MFA90A (SCR-class thyristor). Diode in series with the string, thyristor shortcutting. • Trigger source: dry-contact relay set by external signal • Operation: if the relay is closed when voltage on the PV line appears (morning), the board must re-fire the thyristor.. • Robustness: components, PCB clearances ...

The goal is to turn an Arduino into reliable timing equipment for track-day cars. I already know the core requirement: precise lap timing triggered by track-side sensors, with each lap time shown live on an attached LCD screen so drivers can see their results as they pass the pit wall. What I need coded is: • Accurate capture of a start/finish trigger (IR beam, magnetic reed, or similar—happy to follow your recommendation) • Millisecond-level lap calculation that stores the current lap, previous lap, and best lap in memory • Real-time display of those three values on a 16×2 (or comparable) LCD; the screen should auto-update as each new lap registers • Simple push-button reset to clear the session without rebooting the board Deliverables: 1. Clean...

I need a lead-level hardware systems engineer who is comfortable building around NVIDIA AI modules and can take my concept all the way from schematic to assembled boards. The core task is to design, fabricate, and bring-up custom PCBAs that drive a control system while cleanly interfacing with three sensor classes—temperature sensors, motion detectors, and cameras. Form factor, power budget, and component selection all matter in this build; I already have target size dimensions, allowable power envelope, and a shortlist of preferred parts that we will refine together. Once we lock the architecture you will prepare the complete design package, handle a short prototype run, and validate the hardware with the sensors hooked up. Deliverables • Schematics and PCB layout files &bull...

I need an experienced technician to repair a vintage stereo radio. The model is a JVC: Turntable – AL-E33 Auto Return Turntable System CD Player – XL-E33 Compact Disc Player Dual Cassette Deck – TD-W33 Dual Cassette Deck Integrated Amplifier – AX-E33 (or very similar E33-series amplifier) Graphic Equalizer – SEA Graphic Equalizer Dual Cassette Deck SP-E35 / SP-E73 speakers The unit powers on but produces no sound. It also needs a vinyl pin replacement. One of the cassettes doesn’t play great so an overhaul of that function is also required. Ideal skills and experience: - Proven experience with vintage stereo equipment, especially radios - Ability to diagnose and fix sound issues - Knowledge of replacement parts and repair techniques - Attention to d...

I need a lead-level hardware systems engineer who is comfortable building around NVIDIA AI modules and can take my concept all the way from schematic to assembled boards. The core task is to design, fabricate, and bring-up custom PCBAs that drive a control system while cleanly interfacing with three sensor classes—temperature sensors, motion detectors, and cameras. Form factor, power budget, and component selection all matter in this build; I already have target size dimensions, allowable power envelope, and a shortlist of preferred parts that we will refine together. Once we lock the architecture you will prepare the complete design package, handle a short prototype run, and validate the hardware with the sensors hooked up. Deliverables • Schematics and PCB layout files &...

I’m building a smart blind stick powered by Arduino that combines GSM and GPS. The core goals are straightforward: give real-time location tracking through GPS navigation and trigger an emergency alert whenever the user presses a panic button or the stick detects an unsafe situation. The alert must be sent over GSM as an SMS that includes live coordinates so a caregiver can locate the user immediately. Here is what I need from you: • Complete, well-commented Arduino code that integrates a GPS module for continuous position updates and a GSM module for outbound SMS alerts. • Circuit schematic (Fritzing or similar) showing all connections—microcontroller, GPS, GSM, power regulation, and tactile buttons/buzzers. • A concise bill of materials with part numbers...

I am finalising the architecture for a 32-pin I/O board that must squeeze into a very tight 57.20 × 46.10 mm envelope while cleanly switching 12 V lines. The board will sit behind an external controller, so every pin should be easy to drive from common 3 V–5 V logic without introducing extra noise or latency. Key electrical requirements • Reliable 12 V switching on all 32 channels • Optocoupler isolation between logic side and load side to guarantee galvanic separation and minimise crosstalk • Built-in overcurrent protection on the incoming supply • Careful layout and filtering for low signal noise (both conducted and radiated) Compliance The finished design has to meet the relevant government standard for industrial interface modules; I will pro...

I have a project that centres on creating a detailed multi-layer board schematic (.sch). The priority is to translate my functional requirements into a clean, logically laid-out circuit that is ready for subsequent PCB routing. What I expect from you: • A complete, error-checked multi-layer schematic in the native file format of your preferred professional tool Eagle • Clearly defined nets, component values and footprints so the design moves smoothly into board layout. • A short hand-over note highlighting any design assumptions or areas that may still need validation. If you’re confident with multi-layer board rules, power distribution, and signal integrity considerations, I’d like to hear how you would approach the schematic and your typical turnaroun...

Busco apoyo de un ingeniero de hardware con sólida experiencia en diseño de circuitos, concretamente digitales. Compartiré los requisitos funcionales y la hoja de datos de los componentes clave; tu misión será plasmar todo en un esquema limpio y listo para pasar a PCB, cuidando la integridad de señal y las buenas prácticas de EMC. Entregables esperados: • Esquema completo en Altium Designer o KiCad, incluyendo anotaciones claras. • Lista de materiales (BOM) detallada con referencias de proveedores. • Notas técnicas que justifiquen elecciones de reloj, dominios de potencia y restricciones de enrutado. • Orientación breve para la etapa de layout, para que la transición sea fluida. Valoro una c...

Buscamos un ingeniero electrónico o diseñador de hardware senior para diseñar la "BumbiPTT Interface": una placa base custom en KiCad que aloja una Raspberry Pi 3 Model B+ montada de forma invertida, diseñada para encastrar mecánicamente en un gabinete de extrusión de aluminio LK-ALW30 (204x54.1x120 mm). El circuito funciona como un gateway de audio y control para radio (VHF/UHF/Digital) por IP, con un requisito crítico de inmunidad a RF, separación de tierras y aislamiento galvánico de audio. Puntos clave del diseño (alcance exclusivo de diseño y DFM): Mecánica y Stackup: Montaje invertido de la RPi 3B+ con cutouts térmicos para disipación por conducción hacia el piso del ...

Jestem producentem wentylatorów przemysłowych i szukam partnera do stałej współpracy przy projektowaniu skrzynek sterowniczych. Potrzebuję kompletnej dokumentacji elektrycznej, która pozwoli naszym monterom zbudować i uruchomić każdą skrzynkę bez dodatkowych pytań. Co chcę otrzymać • Schemat elektryczny przygotowany w EPLAN P8 lub AutoCAD Electrical – zostawiam wybór Tobie. • Rysunki z detalami montażu fizycznego (układ aparatury, prowadzenie przewodów, oznaczenia). • Dobór aparatury elektrycznej; nie narzucam marki, liczy się dostępność i funkcjonalność. • Zestawienie materiałów (BOM) z numerami katalogowymi i ilościami. • Pakiet plików wykonawczych ułatwiających prefabrykację i końcowy monta...