PCB-design og layout Jobs

Multi-Arduino Industrial Control System Development (Isolated Communication + Analog + Digital I/O) Project Overview We are developing a modular measurement instrument based on multiple interconnected Arduino boards. Each Arduino handles a dedicated subsystem (UI, motor control, pH control, temperature control) coordinated by a Master Arduino. We require an experienced embedded systems freelancer to: • Design robust firmware architecture • Implement reliable inter-Arduino communication • Ensure electrical isolation to prevent analog noise/crosstalk • Optimize motor control, sensor acquisition, and closed-loop control • Deliver clean, documented, production-ready code • All components should be easily sourced in India This is not a beginner Arduino project &md...

Vær venlig at Tilmelde dig eller Log ind for at se detaljer.

I'm looking for somebody who can fix my pcb, all it has are leds on top

Project Brief: Industrial 230V ESP32-C3 Toshiba AC Gateway & I/O Controller 1. Project Overview Design and develop a production-ready, CE-compliant, DIN-rail mounted (EN 60715) industrial controller for Toshiba AC systems. The device serves as a Master Gateway bridging three domains: • Toshiba AB Protocol – Galvanically isolated UART interface to AC indoor units • Modbus RTU (RS-485) – Expansion bus for modular field I/O (relays, temperature, analog modules) • Local Analog I/O – 0–10 V interfaces for direct HVAC integration The system must be stable, thermally suitable for sealed enclosures, and follow Screaming Architecture principles for long-term maintainability. 2. Hardware Specifications Power & Safety • Integrated ...

I need an electronics specialist based in Mumbai who can take a lithium-ion battery management system from concept to a tested prototype. You will work with me locally so that component sourcing, quick iterations and on-site testing are easy. The circuit must reliably handle overcharge protection and intelligent load balancing across the pack. I am looking for you to create the full schematic, PCB layout and prototype on real lithium-ion cells in my lab and then hand over the working prototype plus and design files.

FM-transmitter for 433 MHz (BFR93W transistor, electret mic front end, bias and tank network). What I need now is a compact, production-ready layout inside a 13.5 mm circular, 2-layer board that I can share with a PCB house without further edits. Everything will be done inside an EasyEDA Shared Workspace; once you send me your EasyEDA username I’ll make you an editor so you can work directly on the live project. The priority is to minimise interference while respecting the strict size limitation, critical component placement around the RF path, and tight signal-routing clearances. If you’re used to controlled-impedance traces, short RF loops, and grounding tricks on tiny boards, you’ll feel right at home. Deliverables I expect at hand-off: • Finalised EasyEDA desig...

I need an engineer to take my concept for a high-voltage DC-DC converter and translate it into a complete, build-ready design that slots straight into a renewable-energy storage setup. The converter will accept 24 V DC at the input and deliver a regulated 165 V DC output. Efficiency, thermal management, and long-term reliability matter far more to me than squeezing every last cent out of the BOM, so component quality and sound topology choices come first. You will own the full electrical design flow—topology selection, key-component sizing, magnetics specification, control strategy, and all supporting calculations. I expect LTspice or an equivalent simulation environment to demonstrate stability, transient response, and efficiency before we move on to hardware. Once the numbers look...

Peace be upon you. I want a complete explanation of the operational amplifier circuit, with practical implementation from scratch using transistors, and building it in simulation. I am looking for an experienced engineer who is strong in electrical physics. It is required that the person speaks Arabic fluently because I am weak in English.

Je souhaite développer un système embarqué destiné à l’automatisation domestique. L’objectif est de concevoir une carte compacte capable de dialoguer, via des modules de communication sans fil, avec divers capteurs et actionneurs déjà présents dans la maison ou ajoutés ultérieurement. Le travail inclut la phase matérielle (schéma et PCB), le développement du firmware et les tests de communication. Les protocoles sans fil à privilégier (Wi-Fi, Bluetooth Low Energy, Zigbee, etc.) pourront être définis selon la portée, la consommation et l’interopérabilité requises. Livrables attendus : • Schéma électronique complet e...

Necesito integrar cancelación de ruido activa (ANC) en mis protectores auditivos 3M PELTOR X2, pensados para un entorno industrial. El objetivo es que el nivel de ANC pueda regularse mediante un control manual fácilmente accesible en el propio casco y que todo el sistema funcione con baterías recargables para evitar el uso de pilas desechables. Busco a alguien con sólida experiencia en electrónica de audio que pueda: • Diseñar el esquema electrónico y la PCB necesaria para añadir micrófonos, etapa de procesamiento y amplificación. • Incorporar un potenciómetro o selector físico que permita subir o bajar la intensidad de cancelación. • Prototipar y probar el sistema directamente so...

Ho bisogno di una scheda elettronica su misura che gestisca esclusivamente sensori di movimento installati all’interno di un espositore. L’applicazione è quindi indoor: vorrei un circuito compatto, a basso consumo e in grado di dialogare in modo stabile con i sensori IR/PIR (o tecnologia analoga, se più indicata). Oltre al dimensionamento elettrico, mi interessa che vengano previsti i connettori giusti per un cablaggio rapido dentro la struttura espositiva e che l’alimentazione sia compatibile con i 5-12 V già presenti nello stand. Non ho vincoli sul microcontrollore: va bene qualsiasi soluzione diffusa e facilmente reperibile, purché la programmazione sia semplice da aggiornare in caso di future modifiche logiche. Deliverable richiesti &bu...

I maintain a fleet of mission-critical electronic control boards that must run flawlessly around the clock. Although the hardware is operational, I want to squeeze every last drop of performance out of it and harden the supporting security stack. Your focus will be on two fronts that matter most right now: • Bench-testing the optocouplers and comparators on the boards, then fine-tuning or replacing any part that introduces noise, latency, or inconsistent thresholds. RS-485 paths are already stable, so your insights should drill straight into these analogue front-end components. • Re-creating my SOC lab scenarios, walking through the logs, alerts, and incident chains, and flagging bottlenecks or mis-tuned rules that slow response time. Packet captures, SIEM exports, and a fu...

PCB Technical Blog Writing Guidelines Each week I publish in-depth, EEAT-driven articles that demystify printed-circuit-board design and manufacturing for an audience of intermediate professionals. The primary goal is to educate—every post must read like it was penned by someone who has actually laid out boards, debugged traces, and wrestled with impedance calculations, not by a generic content mill. Scope of work You will draft original how-to guides that walk readers through real engineering challenges (e.g., stack-up selection, thermal relief strategies, DDR routing tips). Practical detail and accurate terminology are essential; surface-level summaries or re-hashed competitor pieces won’t be accepted. Quality standards • EEAT: demonstrate personal experience,...