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I already have a complete circuit schematic for an ESP32-based board and now need it translated into production-ready, two-layer Gerber files. Please work exclusively in KiCad so that I can review and maintain the project later. Follow standard IPC design rules throughout: clearances, trace widths, copper pours, silkscreen legibility, and all the usual checks that guarantee a smooth hand-off to any mainstream fab house. The board carries an ESP32 module, its accompanying power-management stage (regulators, protection, filtering), plus several sensors and small actuators. Placement should reflect good RF practice around the ESP32 antenna while keeping analog and noisy digital sections apart. I will supply: • the schematic (KiCad or PDF) • component datasheets and footprints...

I need an interface connector for carrying sensor readings from Ultrasonic datalogger by Modbus cable RS-485 with a male connector. The PCB interface is to be built with a 6-pin military female connector at one end and printer cable connector at the other end that will be used to connect to a laptop USB port to download the data (Refer to picture attached). Requirements: - Use a female 6 pin military connector (standard adapter) for the military connector and a female print cable connector on the other end, with PCB in between - No custom cable is needed - Ensure compatibility with Modbus protocol - Encapsulate the PCB into aluminium pot or similar for robustness Ideal Skills and Experience: - Expertise in Modbus communication - Experience with military and printer cable connectors - ...

Necesito sustituir mi inversor actual por un inversor híbrido solar y dejarlo funcionando junto a un banco de baterías de entre 5 y 10 kWh. El trabajo incluye, además, mejorar el tablero eléctrico existente. Alcance principal • Retirar el inversor instalado y colocar el nuevo inversor híbrido solar. • Conectar y configurar las baterías (capacidad total dentro del rango indicado) asegurando una gestión eficiente de carga y descarga. • Actualizar los componentes antiguos del tablero: breakers, cableado o rieles que ya no cumplan normativa. • Incorporar un sistema tipo isla para que la instalación pueda funcionar de forma autónoma en caso de corte de red. • Verificar protecciones, puesta a tierra y correc...

We are OMM Enterprises, a company engaged in machine manufacturing and sales, including paper plate machines, roti making machines, and other automation equipment. We are looking for a practical Pneumatic Design Engineer or Freelancer who can help us design and improve pneumatic systems for our machines. --- Scope of Work: - Design simple and efficient pneumatic circuits - Suggest suitable components (cylinders, valves, compressors, fittings) - Create technical drawings and layouts (AutoCAD / SolidWorks preferred) - Focus on cost-effective and reliable system design - Provide guidance during implementation if required --- Requirements: - Experience in pneumatic system design or machine design - Basic understanding of industrial automation - Ability to create practical, working desig...

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I have a working PoE injector board in hand and need a clear, engineer-level breakdown of how it does what it does. Your analysis should cover three areas: • Power-delivery mechanism • Data-transfer process • Component layout and individual part functions All I can supply right now are high-resolution digital images of the board—there are no original schematics or datasheets—so the first task is a reverse-engineering exercise. I expect a concise report that reconstructs the schematic as far as practical, explains each power and data path, identifies every major component, and highlights any design choices that stand out. Please include recommendations on performance limits, potential failure points, and where improvements could be made. A well-annotated ...

Need help for two questions cadence spice simulation budget 30$ plz check the attachment

I'm converting my food truck's power system from acid lead batteries to lithium. I need an experienced engineer to assist with the installation of a new converter and ensure the wiring is suitable for the new power source. Key tasks: - Install a converter that has a power of 5kW, suitable for a 60V battery input, and can charge the batteries with 240V mains voltage - Partially rewire to accommodate the new system (assume thicker wires now needed) This is for an electric food truck. Simple wiring is already in place & visible. Batteries are being built and installed by experts i SE5, London. Can be flexible on timings. as I need to source the converter. Ideal skills and experience: - Electrical engineering background - Experience with food truck or vehicle power systems ...

I'm looking for an experienced Arduino programmer to create a microcontroller-based shooting target system. The system will feature 20 targets spread over a wall, with individual LEDs that randomly light up and a sound effect when a target is hit. Key Requirements: - 20 targets with individual LEDs - LEDs randomly lit - Arduino-based microcontroller - Sound effect on hit Ideal Skills and Experience: - Proficiency in Arduino programming - Experience with individual LED control - Knowledge of sound integration with microcontrollers - Background in electronics and circuit design Please provide relevant experience in your bids.

I'm seeking an electrical engineer with expertise in renewable energy systems to assist in validating designs and finalizing engineering plans for a hybrid power system. Must have experience with VICTRON ENERGY Components. The system will primarily integrate solar power with an LP/gas generator, and potentially incorporate hydropower. Key Tasks: - Validate and refine design for efficiency - Specify wire gauging - Ensure cohesive system design- Review and validate system concepts - Perform load analysis and system modeling - Design hybrid power system architecture - Size and integrate battery storage systems - Integrate generators with solar and storage - Develop electrical schematics and diagrams - Ensure compliance with U.S. electrical codes and interconnection requirements - Prep...

I am looking to hire a licensed and experienced electrician in Virginia to inspect and repair an issue with my display wall lighting. The lighting is currently partially not working, and I need someone who can: Diagnose the electrical issue Identify the cause of the partial failure Repair or replace any faulty wiring or components Ensure the lighting is fully functional and safe Location Virginia (on-site service required) Requirements Valid Virginia electrical license/certification Proven experience with residential electrical repairs Ability to troubleshoot lighting systems Must be reliable and professional

I'm seeking a skilled project designer for a commercial electrical project. The work involves creating detailed designs using KiCad. Key requirements include: - Proficiency in KiCad - Experience with footprints, Gerber files, and schematics - Background in commercial electrical systems Ideal candidates will have: - Relevant certifications - Strong attention to detail - Ability to meet deadlines Please provide samples of previous work and a timeline for completion.

PCB Design – STM32 I need an experienced PCB designer to create a 4-layer industrial PCB Requirements: * MCU: STM32 * 4G Module: SIM7600G (GPS + LTE) * Power: 12V → 5V (LM2596), 3.3V (AMS1117), battery backup * Inputs: 3× CT + 3× PT (with protection & filtering) * Output: Relay-based MCCB trip (optocoupler isolated) * Extra: MPU6050 (I2C), LEDs, buttons, UART debug Key Design Points: * 4-layer PCB (GND + power planes) * Proper HV/LV isolation (8mm clearance) * EMI/EMC-friendly layout * RF layout for 4G antenna (50Ω) Deliverables: * PCB design files (KiCad/Altium/EasyEDA) * Gerber + BOM + Pick & Place * Ready for manufacturing Looking for: * Experience in industrial PCB design * Knowledge of power + RF + protection circuits Apply with: * Simil...

I already have an ESP32-C3 prototype of AutoSmear running reliably on a hand-wired board, but now it is time to turn that lab-bench tangle into a production-ready PCB. Compact layout is my top priority: the board must fit inside the existing enclosure while leaving room for future shielding and airflow. Just as important, the A4988 motor driver needs to be integrated cleanly so the stepper that moves the blood-film spreader glides without vibration or jerks. What I will hand over to you • Tested firmware ( ESP32-C3) • Current schematic, wiring diagram and BOM • Mechanical constraints for board outline and mounting points What I need back • Updated schematic reflecting any refinements you suggest • Space-efficient multilayer PCB layout with proper ground...

We are looking for an experienced PCB Designer / Electronics Consultant with proven expertise in ATEX / IECEx standards to support the design and development of a PCB intended for use in hazardous (explosive) environments. The selected candidate will be responsible for ensuring that the design complies with relevant standards and can successfully pass certification requirements. Scope of Work: Design and review PCB in compliance with: ATEX Directive 2014/34/EU IECEx Scheme IEC 60079 standards (especially 60079-0 and 60079-11 for intrinsic safety) Provide guidance on protection methods (e.g., Intrinsic Safety – Ex i, Increased Safety – Ex e, etc.) Ensure proper implementation of: Creepage and clearance distances Energy limitation and fault tolerance Component selection and de...

We are looking for an experienced PCB Designer / Electronics Consultant with proven expertise in ATEX / IECEx standards to support the design and development of a PCB intended for use in hazardous (explosive) environments. The selected candidate will be responsible for ensuring that the design complies with relevant standards and can successfully pass certification requirements. Scope of Work: Design and review PCB in compliance with: ATEX Directive 2014/34/EU IECEx Scheme IEC 60079 standards (especially 60079-0 and 60079-11 for intrinsic safety) Provide guidance on protection methods (e.g., Intrinsic Safety – Ex i, Increased Safety – Ex e, etc.) Ensure proper implementation of: Creepage and clearance distances Energy limitation and fault tolerance Component selection and de...

Title: Pneumatic System Designer Required for Machine Manufacturing Company Description: We are OMM Enterprises, a growing company involved in machine manufacturing and sales. We are looking for an experienced Pneumatic System Designer who can help us design and plan efficient pneumatic systems for our machines. Scope of Work: Design complete pneumatic circuits and systems for industrial machines Provide detailed drawings and layouts Select appropriate components (valves, cylinders, compressors, fittings, etc.) Ensure cost-effective and efficient design Support in execution planning and implementation Troubleshoot and optimize existing pneumatic setups (if required) Requirements: Proven experience in pneumatic system design Knowledge of industrial automation and machine design Ability t...

I need a electrical designer who can prepare an approval-ready electrical plan for my 160 sqm restaurant in the Philippines. I already have an architectural layout drafted, so you can work directly from that file. The goal is to produce a complete electrical design package that satisfies local permitting requirements and aligns with the Philippine Electrical Code. I will submit these documents to the city engineer, so accuracy and compliance are critical. Key tasks • Review my existing layout and identify optimal circuit routes, panel locations, and load calculations. • Produce a stamped electrical plan (PDF + DWG) showing branch circuits, breaker schedules, lighting and receptacle layouts, grounding, and single-line diagrams. • Include any notes or legends typically r...

Necesito un diseñador electrónico que me ayude a pasar de idea a archivo Gerber una placa de 15 × 15 cm lista para fabricar en JLCPCB. Componentes que debo integrar: • 1 ESP32 montado tipo “solder-on”. • 4 pantallas LCD conectadas por cable. • 4 relés con su respectivo LED indicador. • 2 módulos de 315 MHz, previstos con conectores tipo header (tal como los quiero montar). • 1 módulo para tarjeta micro SD. Aún no dispongo del esquema eléctrico, así que también requiero apoyo para elaborarlo y validar la asignación de pines, trazos de alimentación y señales. Cuando el circuito esté claro, necesito: 1. Diseño del esquemático completo ...

I’m outfitting my scale model airplane with an LED lighting system that switches on automatically whenever someone (or another object) comes close to the aircraft. The motion-sensing method must rely on proximity detection rather than vibration or general movement. already has lights. looking to install motion sensor and on off toggle switch. the touch sensor it currently has is shit and wont stay on for more then 20 sec.

Hardware Description – DMA Interposer Card Overview The DMA Interposer Card is a custom PCIe x1 device designed to interface between a host computer and a downstream PCIe endpoint (e.g., a Wi-Fi adapter). The card provides transparent passthrough of the endpoint device to the host system, while embedding an FPGA-based DMA engine capable of bus mastering, memory injection, and packet manipulation. Control of the DMA engine is performed via the PCILeech software suite, enabling flexible direct memory access operations. Functional Blocks 1. PCIe Passthrough Bridge • Provides a transparent PCIe x1 interconnect between the host computer and the attached endpoint device. • Maintains compliance with the PCIe protocol to ensure the endpoint is enumerated by the host as if connected...

Hardware Description – DMA Interposer Card Overview The DMA Interposer Card is a custom PCIe x1 device designed to interface between a host computer and a downstream PCIe endpoint (e.g., a Wi-Fi adapter). The card provides transparent passthrough of the endpoint device to the host system, while embedding an FPGA-based DMA engine capable of bus mastering, memory injection, and packet manipulation. Control of the DMA engine is performed via the PCILeech software suite, enabling flexible direct memory access operations. Functional Blocks 1. PCIe Passthrough Bridge • Provides a transparent PCIe x1 interconnect between the host computer and the attached endpoint device. • Maintains compliance with the PCIe protocol to ensure the endpoint is enumerated by the host as if connected...

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I need an experienced crossover designer to create a passive network for a pair of home-audio loudspeakers that will serve as the front channels of my home-theater setup. Time is critical—I’d like to move straight from concept to components as soon as the design is proven on paper (or in simulation). You will receive the driver datasheets and my raw on-axis/30° measurements the moment we open a workspace. From there I expect you to: • model the network in XSim, VituixCAD, or equivalent software, • refine it until the summed response, phase alignment, and impedance curve all fall within standard hi-fi tolerances, • deliver a clear schematic with exact part values, plus a short bill of materials that I can order immediately. Please include any questions ...

Hi there amazing freelancers, I have a relatively simple wiring diagram that I need converted to a KiCad file to send out for 3rd party fabrication. Please see attached image and diagram.

I have a reaction-timing system schematic that needs a careful second set of eyes. Your task is to validate the entire power section—specifically the voltage levels, current-carrying capability of each rail, and how the various power sources are integrated—and then scrutinise every ceramic capacitor on the board for correct capacitance values and voltage ratings. You’ll receive the full PDF and the original design files (KiCad). I expect clear, pin-referenced comments on the schematic plus a concise report outlining: • any mismatched voltage rails or trace width issues that could limit current • potential inrush or stability concerns tied to the chosen power sources • capacitors whose stated capacitance or voltage rating doesn’t align with the c...

Seeking an electrical engineer or controls engineer to design a residential prototype system for monitoring energy use on selected branch circuits and disconnecting a circuit when its daily energy consumption exceeds a configurable limit. Project overview The system is intended for a 120/240 V residential service with a 200 A main panel. The goal is to monitor approximately 8 to 10 selected branch circuits, measure kWh consumption on each circuit, and automatically turn off an individual circuit when its daily kWh use exceeds an adjustable per-day setpoint. The intended architecture uses DIN-rail Modbus energy meters, RS-485 communications, and contactors or other suitable circuit-interrupting devices controlled by a central controller. functional Requirements • Monitor 8 to 10 selec...

I need a qualified electrician to design, assemble and install a residential distribution panel that is split into three completely independent single-phase sections for my house. Each section must include: • one BSES-supplied digital energy meter with an easy-to-read display • one Schneider Electric ELCB • one Schneider Electric MCB matched to that phase load • two 16 A universal sockets The three sections will be mounted in a single enclosure yet remain electrically isolated so I can monitor and service them separately. All wiring, bus-bar work, earthing, labeling and insulation should comply with current BIS and local DISCOM norms. Deliverables I expect: 1. Schematic and enclosure layout for approval before fabrication. 2. Supply and in...

I’m developing a commercial product that relies on a set of interactive elements—speakers, sensors, and LED displays—and I need clean, production-ready schematic diagrams that tie them all together. The core of the job is translating my functional requirements into well-documented circuitry that in-house team can follow without second-guessing pinouts, signal paths or power budgets. This is an interactive piano that plays audio files. You’re free to work in whichever design environment you’re most comfortable with—Altium, KiCad, Eagle, OrCAD, or any other professional tool—as long as the resulting files can be shared in their native format plus PDFs for quick reference. What I expect from you: • A complete, logically organised schematic sho...

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

I’m preparing an electrical simulation in XSim and could use an experienced hand to get everything running smoothly. The immediate goal is to build and validate an audio-amplifier circuit, but I’m hitting a few snags while configuring the project and debugging unexpected behaviour in the tool. Here’s what I need from you: • Walk me through the full simulation setup in XSim—component selection, net-list creation, stimulus definition and any must-have parameter tweaks for audio work. • Identify and resolve the software glitches or warning messages that keep interrupting my runs. • Share practical tips on result interpretation so I can quickly spot distortion, gain issues or stability problems in the amplifier stage. We’ll collaborate live i...

I want to retrofit the faucets in my sinks so that the water starts and stops automatically, cutting waste every time someone washes their hands. My idea is to mount motion sensors near the faucet handle; when a hand approaches, the valve opens and, once no movement is detected, a built-in timer shuts the flow after a short delay for rinsing. Here’s what I need from you: • An electronics solution built around motion sensors positioned at the handle area, with a timer-based automatic shut-off. • A clear wiring diagram, component list and recommended suppliers. • Microcontroller or off-the-shelf control module code/firmware that handles motion detection, debounce, and the adjustable shut-off timer. • Mechanical integration details—housing or bracket concepts...

I’m building a proof-of-concept that can drive about fifteen miniature coils with freely programmable electromagnetic bursts. The first milestone is to settle on the most suitable microcontroller platform—Teensy 4.1 looks promising, yet I’m open to any alternative that offers comparable speed and I/O while keeping component procurement inexpensive here in Shenzhen. Cost-effectiveness, especially in sourcing parts locally, is my top priority, so I’d like your guidance on picking chips, drivers, and passive components that are abundant in Huaqiangbei and similar markets. Once the hardware is defined, I need firmware that lets each coil receive independent, highly variable waveforms (adjustable amplitude, frequency, duty-cycle, and pulse trains). A companion PC or t...

I need a PCB designed for a custom rectangular LED array using through-hole LEDs. The array will contain between 60 LED's. With 2 power inputs. On power being applied to one channel, all of the LED's will light. When power is applied to the other channel, only a selection of LED's will light. There will be a scenario where both power supplies are active at the same time so this will need to be considered. Key requirements: - Design a PCB to accommodate 50-100 through-hole LEDs in a rectangular layout. - Ensure proper spacing and connections for reliable functionality. - Provide Gerber files and schematic diagrams upon completion. Ideal Skills: - Experience with PCB design software (e.g., Eagle, KiCad). - Knowledge of through-hole LED specifications and requirements. - Att...

I need a MIDI interface designed with the following specifications: - Type: MIDI interface - Connectivity: DIN - Ports: 5 or more Ideal skills and experience: - Experience in designing MIDI hardware - Proficiency in DIN connectivity - Knowledge of multi-port interfaces