PCB Layout Jobs

I need a full EasyEDA project—schematic and routed PCB—for a tiny Atmega32U4 board that lets a computer drive a single external LED through a 3-pin XH-JST connector (GND / 5 V / LED). The board must talk and be programmable over a horizontal USB-C port and should remain as small as practical without sacrificing good layout practice. Core requirements • EasyEDA schematic using the Atmega32U4, including crystal or resonator, USB-C E-Markers (where needed), ESD protection, boot-cap circuitry and the standard reset network. • Break-out to one XH-JST-3 plug clearly silkscreened with the GND, +5 V and LED symbols. • Primary power supplied by USB-C 5 V rail. • Firmware that gives basic functionality: detect USB power, expose the MCU as a simple USB HID to ...

I already have a complete schematic and need it translated into a clean, manufacturable two-sided board in KiCAD. The design is a functional prototype, so component placement and routing should favour ease of debugging and hand-assembly: a mix of SMD parts and a handful of through-hole connectors, switches, and test points. Key points you’ll handle include good power and ground practice, silkscreen clarity, sensible net classes, and DRC-clean traces on only two layers. I’ll supply the schematic file along with any part libraries that aren’t in the standard KiCAD distribution. Deliverables I expect: • KiCAD project folder with completed PCB layout • Production-ready Gerber/Excellon set plus IPC-356 netlist • Updated BOM showing footprints and package...

More information will be given to eligible freelancer.

Project : to design Battery charger and BMS(Battery management system) Existing Battery Configuration 2 × 12V, 100Ah Sealed Lead Acid (SLA/VRLA) batteries connected in series (24V DC system) Scope of Work We require a production-ready solution comprising an intelligent battery charger and BMS for continuous industrial operation. Battery Charger (Intelligent 24V SLA battery charger) 1.⁠ ⁠Automatic Bulk, Absorption & Float charging 2.⁠ ⁠Configurable charging current 3.⁠ ⁠Temperature-compensated charging 4.⁠ ⁠Over-voltage, over-current and short-circuit protection 5.⁠ ⁠Reverse polarity protection 6.⁠ ⁠High efficiency design suitable for 24×7 operation Battery Monitoring & Protection  1.⁠ ⁠Individual battery voltage monitoring  2.⁠ ⁠Total battery bank voltage monitori...

Hi,I am building the DefendX Tactical Smartwatch. I need an expert hardware engineer to design the board completely from scratch—starting with component selection and schematics, all the way through 4-layer PCB layout and physical lab testing. Project Requirements (42×42 mm, 4-Layer Board): Core: ESP32-S3 (Compact module like the MINI series). Radios: Wi-Fi/BLE, Sub-GHz LoRa (e.g., SX1262), and GPS (e.g., SIM68M). Sensors: Biometrics (HR/SpO2 + Temp) placed wrist-facing on the bottom layer, plus a 9-axis IMU and Compass. Power & Storage: LiPo battery management (with a central cutout pocket on the PCB for the battery) and SPI NOR Flash. Your Scope of Work: BOM Selection: Pick reliable components that are actively in stock at JLCPCB/LCSC. Schematics: Design the ...

I am building a proof-of-concept 2D LiDAR unit from the ground up and need a mainland-based embedded electronics engineer who can handle every step of the design and bring-up process. The goal is a compact indoor scanner that excels at obstacle detection and terrain mapping while holding tight, high-accuracy tolerances. What the work involves You will take the idea from blank sheet to working board: optical layout, high-speed signal processing, motor/galvo drive, power management, firmware, and a simple USB/TTL data interface that streams polar coordinates for fusion in my existing SLAM stack. Expect heavy use of Altium (or KiCad), STM32/ESP32 class MCUs, precise timing control in C/C++, and low-level debugging with J-Link or OpenOCD. I will handle mechanical housing once you define env...

We are developing an industrial AI camera system based on the Rockchip RV1126B processor and onsemi AR0234 global-shutter image sensors. We want to use a ready-made RV1126B SOM/core board and develop a custom carrier PCB. Our internal team will concentrate on AI and application software. The freelancer/company must handle hardware design, PCB layout, board bring-up and low-level Linux camera integration. The system will support: Two GMSL2 camera inputs One local AR0234 MIPI CSI-2 camera Three simultaneous camera streams Isolated industrial trigger input Gigabit Ethernet for compressed preview and communication 3.3 V TTL UART service/debug connection 12–24 V DC power input Proposed Architecture RV1126B SOM/core board Minimum 2 GB RAM Minimum 16 GB eMMC MAX96716A dual GMSL2 deserialize...

Engineering Proposal – Slim Custom Jewellery Tablet (MVP) We are looking for an engineering partner to develop a slim, premium, purpose-built touchscreen tablet for our jewellery business. The device will run our proprietary jewellery software and should provide a complete integrated solution: * High-quality touchscreen optimized for jewellery images/design exploration * Android-based embedded system or another suitable OS * Processor, RAM, storage and Wi-Fi * No camera required * Slim, lightweight custom enclosure * Reliable power/battery system * Automatic launch of our application on startup * Kiosk/locked-device mode * Internet/cloud connectivity * Local database and synchronization * Jewellery gallery and product exploration * Jewellery creation/configuration * Customer and prod...

I'm seeking an experienced circuit designer to create a digital control system for a Bi Color LED Matrix. The core component of this system will be a microcontroller that can add good sound quality designed by software in which each LED will have a sound frequency. Key Requirements: - Design of an LED Matrix of 25 columns and 6 rows - Integration of a microcontroller and some quality sound. - Application focused bluetooth control systems iphone and android Ideal Skills and Experience: - Expertise in digital circuit design - Proficiency with microcontrollers - Experience in control systems for bluetooth iphone , android applications. Please provide examples of similar work.

I have an ESP32-D dev board and three unused PAA5100JE optical-flow sensors. I only need to bring one online first, confirm it streams clean motion data, then replicate the solution for the other two. What I already have • A sketch that compiles but never sees the sensor • All parts on hand, breadboarded and powered • Standard Arduino IDE installed on my end for quick testing What I need from you within the next couple of hours 1. Corrected or freshly written code that initializes the PAA5100JE, verifies it over SPI, and outputs X/Y delta values on the serial monitor at 115 200 bps. 2. A clear wiring diagram (hand-drawn is fine if neat, Fritzing/KiCad even better) that shows every pin between the ESP32-D and the sensor, including power, ground, CS, MISO, MOS...

I want an ultra-low-power driver board that can run a small E-Ink panel completely untethered. The module must expose both WiFi and Bluetooth so it can receive data from a web API or a local mobile app and refresh the screen on demand. Power autonomy is critical: in addition to a rechargeable battery the board should accept a compact solar cell and scavenge ambient 2.4 GHz energy (WiFi harvesting) to keep the system alive for months without manual charging. Core expectations • Electronics: schematic, component selection and PCB layout optimized for sub-100 µA standby, including the WiFi/BLE SoC, power-path management, solar MPPT, RF-to-DC harvester and battery protection. • Firmware: ESP-IDF/Arduino or similar code that boots, joins WiFi or BLE, pulls a JSON payload, d...

I need a working prototype of a fully-automated roti-making machine that can turn out 100 soft, evenly cooked rotis in 30 minutes while keeping the total build cost under ₹10,000. Durability is my top priority: gears, belts, heating plates, and the overall frame must stand up to continuous use without needing frequent maintenance. Heating flexibility is also essential. The design has to accept both induction coils and standard gas burners so I can switch energy sources as required. From dough portioning and pressing to cooking, puffing, and neatly stacking, every step should run hands-free once ingredients are loaded. To keep the budget realistic, I’m open to clever use of off-the-shelf components, 3-D-printed parts, recycled food-grade stainless, or low-cost electronics such as Ar...

My small UK business is ready to move to an AIKO ABC solar array and I need a specialist who can take me from concept to switch-on. Above all, I value peak efficiency and performance, so every recommendation must squeeze the maximum kWh out of limited roof space while keeping operating temperatures low. Scope of work • Bespoke system design: size the array, optimise panel layout, and model annual generation using the latest UK irradiance data. • Equipment specification: AIKO panels are my first choice, but please show comparative numbers for JA Solar so I can see the trade-offs. Pair the array with a smart inverter (we currently favour SolarEdge, Sigenergy or Solis) and add battery storage to capture excess daytime production. • Warranty alignment: 25-year manufactu...

I’m developing a hardware product that blends moving mechanical parts with custom electronics and need a versatile engineer to carry the concept from rough sketches to a small-batch-ready prototype. You will start by reviewing my idea, asking clarifying questions, then turning the requirements into detailed mechanical drawings and electronic schematics. From there, I’ll rely on you to choose appropriate components, model the assemblies, lay out the boards, and iterate until everything fits, functions, and can be manufactured without surprises. Deliverables • Native CAD files (STEP or similar) and clear assembly drawings • Complete electronic design package with schematics, layout, and Gerber files • Consolidated bill of materials with readily available pa...

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 finalising the hardware for a new piece of wearable technology and now need the firmware that will bring it to life. The sole purpose of this first release is health monitoring, so everything you write should focus on gathering and processing the following signals with medical-grade accuracy and minimal power draw. 2. What Is Already Completed (Do NOT Redo) 2.1 Hardware Design Deliverables (Final) - COMPLETED The following have been completed and reviewed: ●Final schematic design (Altium) ●ESD / EMI protection design ●Power tree & power integrity design ●RF separation strategy (LTE / GNSS / BLE) ●GSM + GNSS + sensor integration plan ●Final 4-layer PCB layout (controlled impedance) ●PCB stack-up definition ●BOM with alternates & footprint expectations ●Power IC replacemen...

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 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, ...

Title: Mentor Needed: Guide Student Research Team Building an Arabic Sign Language Glove (Step-by-Step, Video Calls) — Phase 1 Budget: $25–$40/hour, total budget $400–$600 for Phase 1 (roughly 12–20 hours) Timeline: 1 month Description: We are a research team working on building a wearable glove that translates Arabic Sign Language into text, with camera-based recognition planned as a future phase. Our team includes high school students and two researchers experienced in quantitative research methodology — but no one on our team has hardware/electronics building experience. We're looking for a freelancer who can act as a hands-on mentor for the hardware and coding side, not just a builder — someone who will walk us through each step and explain ...

We are seeking a Jakarta-based bilingual Technical Procurement & Coordinator for a small industrial equipment installation project. The immediate priority is obtaining and coordinating quotations for a custom low-voltage electrical distribution panel, including technical review, workshop fabrication, FAT, delivery, onsite installation and energisation. You will communicate with panel builders in Jakarta, explain the supplied single-line diagram and selected component list, obtain clear quotations and lead times, and identify what each contractor still needs to proceed. You must be fluent in Bahasa Indonesia and confident in spoken and written English. Experience with electrical panels, electrical distribution, industrial procurement, MEP, construction or supplier coordination is...

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’m getting ready to spin up a prototype and need an experienced PCB designer to turn my schematic into a clean, single-layer board that will end up larger than 10 cm × 10 cm. I’ll provide the circuit diagram along with a few placement preferences; from there you’ll handle footprint selection, component placement, manual or auto-routing (whichever gives the most reliable results on a single copper layer), and all the usual design-rule checks. Because this is strictly for prototyping, I’m less worried about space savings and more concerned with trace clarity, manufacturability, and easy debugging. Standard through-hole parts dominate the BOM, but a couple of SMD footprints may appear—nothing exotic. If you normally work in KiCad, Altium Designer, or Eagl...

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 complete electronic hardware solution for a therapeutic, drug-delivery device that administers medication via inhalation. The brief covers everything from early-stage architecture to a working, testable prototype. The hardware must precisely control dose release, monitor key parameters such as airflow and temperature, and log usage data for later analysis. Size, power consumption, and patient safety are critical. Expect the design to comply with IEC-60601 and ISO-13485 principles, ready for eventual regulatory submission. To keep the project clear, here is what I expect to receive: • Detailed schematics and PCB layout files (Altium, KiCad, or similar) • Component-level bill of materials with sourcing information • Firmware source code to drive sensors, act...

I need assistance reviewing a Gerber file to ensure it is set up correctly. If confirmed, the freelancer will upload the necessary code or firmware via Arduino and solder the pre-produced chip into a PC mouse.

I have an existing PCB patch antenna array that under-performs: its gain is consistently low across the entire operating band. The goal of this project is a measurable performance upgrade—specifically a clear gain improvement—without increasing the overall board size or compromising manufacturability. You will start from my current Gerber files and 3D model, diagnose why the array is losing gain, and then adjust the element geometry, feed network, ground plane, or matching circuitry as needed. Full-wave EM simulation (CST, HFSS, or equivalent) is required to validate each design iteration; Smith-chart impedance plots, realised gain, efficiency, and 3-D radiation patterns must be included in the reports. I am open to adding parasitic patches, EBG structures, or other proven tec...

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 working prototype that lets me monitor a single-car residential parking spot without running any wiring. The concept is simple: • Hardware: a custom ESP32 board that combines LoRa radio, BLE, and a low-power magnetic (Hall-effect) sensor. It will spend almost all of its life in deep-sleep on two AA batteries and wake only when a car enters, exits, or moves. On every wake-up it must stamp the event with time, append the car’s BLE ID, and shoot that packet over LoRa. • Gateway: a battery-operated LoRa gateway that forwards incoming packets to my home Wi-Fi and then to a mobile or web endpoint of my choice (MQTT, REST, or similar). The key technical goals are extreme power efficiency, reliable car-only detection, and end-to-end message delivery you can demonstrate ...

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.

We are seeking a Senior Embedded Firmware Engineer or Small Embedded Systems Team to extend and integrate an existing commercial embedded firmware platform for a new hardware revision. This is not a greenfield project. The successful candidate will work with an established embedded C firmware platform and will be responsible for understanding the existing architecture, implementing support for new hardware, integrating new functionality, and delivering production-quality firmware. Responsibilities: Review and understand an existing embedded firmware codebase. Develop and integrate firmware for new hardware components. Implement and debug embedded firmware. Work with RTOS-based embedded systems. Develop and maintain communication interfaces including SPI, I²C, UART/RS-422, and E...

I have a patent-pending concept for an all-in-one bicycle sound system and I’m ready to move from idea to working prototype. The vision is simple: riders enjoy music through speakers that are seamlessly housed inside the frame while a single onboard battery powers both the speakers and a phone-charging port. Core requirements • Audio must stream via Bluetooth connectivity; I’m not looking to add AM/FM or USB inputs at this stage. • Physical button controls should be integrated into the bike so riders can adjust volume, skip tracks, and check battery status without a phone. • The battery pack needs enough capacity to drive the speakers at cruising volume and top up a typical smartphone on longer rides. I will provide sketches of the frame sections wher...

I need a full-stack hardware designer to turn my concept into a manufacturable prototype board built around Rockchip’s RV1126B. The board must carry 2 GB LPDDR4X, a 32 GB eMMC, microSD slot, on-module Wi-Fi/Bluetooth, and a MIPI-DSI connector that will drive a touch display used strictly for user interface and control. Because this is a prototyping/testing build, I am happy to iterate, but the first revision should already be hand-solderable or assembly-ready at common fabs. Key integrations • Two USB 2.0 ports will each host an external Wi-Fi video receiver; please validate bandwidth and power budgets. • An existing STM32F405-based SkyBrain RC subsystem must be brought onto the same PCB (or docked through a high-speed mezzanine) so every one of its functions—...

I need a compact, battery-powered hour meter that bolts onto a piece of marine equipment, connects to the boat’s Wi-Fi, and silently counts every minute the engine runs. Beyond simple hour logging, it must also sample and report its own battery voltage so I can tell when the internal cell is getting low. The device should push both data points—total run-time and current battery level—to a cloud endpoint I’ll expose. I plan to read everything from a web-based remote dashboard, so no on-device screen is required. An LED or brief buzzer chirp during initial pairing is fine, but the unit will spend most of its life sealed in a damp engine bay. Reliability and low standby draw are therefore critical. Please deliver: • Hardware schematic and bill of materials...

I'm looking for an experienced hardware/embedded engineer to build a first working prototype of a wearable sensor vest for athlete movement and heart rate monitoring. Scope: Sensor 1: GPS + 9-axis IMU (accelerometer, gyroscope, magnetometer) — for speed, distance, direction, and position tracking Sensor 2: Heart rate sensing — open to your recommendation on approach (optical/PPG vs. ECG) for a first prototype, given the vest will be used during physical activity/sport Data transmission: BLE to a nearby tablet/laptop Physical form: lightweight vest/garment insert, worn on the back, under 150g target, minimum 3-4 hour battery life, sweat-resistant What I need from you: Schematic + PCB design Firmware for both sensor sets A basic enclosure (3D printed is fine for this stag...

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’m building a 150 W power-supply card that will live inside industrial machinery and must keep running in a harsh environment riddled with temperature swings, vibration, dust and electrical noise. The board has to deliver two isolated outputs—24 V for the actuators and 5 V for the control logic—at the same time, with total combined power not less than 150 W. (Discreet preferred, can go with module-based also) I need a complete, production-ready design package: schematic, PCB layout, annotated BOM with orderable parts, and all fabrication files. Thermal modelling, component derating and clearances should reflect industrial-grade safety (IEC/UL standards) and 24/7 duty cycles. I’m fine with Altium, KiCad or OrCAD as long as the files are editable in Altium. Before ...

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 ...

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I’m developing a microcontroller-based embedded system that will sit inside a vehicle (horn-relay) and act as the central hub for sensor integration and data acquisition. The core of the job is full-cycle design and development: selecting the right MCU family, creating the schematic and PCB layout, writing the firmware, and validating that the board reliably collects, timestamps, and streams data from the relay connectivity Hands-on experience in both embedded C/C++ and practical electrical or automotive environments is essential because the design must stand up to temperature, vibration, and EMI constraints found in vehicles. Familiarity with CAN, LIN, or similar in-vehicle networks is a plus; the final board will need to forward selected sensor packets to the main ECU. Deliverabl...

I need a custom-built RFID reader that can reliably pick up standard identification tags in an outdoor setting. The enclosure must withstand sun, rain, and an occasional hose-down while still offering stable read range and low error rates. At this stage I am open about the operating band—LF, HF, or UHF—so long as we can balance range, power consumption, and tag cost. I expect us to discuss the trade-offs early and lock the decision in before PCB layout begins. Here is how I see the work flowing: • Electronic design—from antenna matching through to the microcontroller or SoC that will parse tag IDs and forward them over a simple UART, USB, or Ethernet interface. • Firmware—clean, documented C/C++ code (Arduino, ESP-IDF, or a bare-metal toolchain is fin...

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 ...