Prototyping Jobs

​PROJECT DESCRIPTION: We are looking for an experienced PCB hardware designer to develop a production-ready schematic and 2-layer PCB layout for a custom battery-powered LoRa node. TOTAL PROJECT DEADLINE: 5 to 7 days from project kickoff. ​CIRCUIT ARCHITECTURE & KEY COMPONENTS: ​ / RF: Ai-Thinker RA-09H LoRa module. 2 .​Power Supply: ​ * HT7333A low-quiescent LDO (3.3V rail to the RA-09H). * ​SX1308 step-up boost converter (Battery to 12V). * ​MOSFET switch to turn the 12V rail completely on/off via MCU to save battery. ​ 3 .Actuator Driver: RZ7899 H-bridge motor/actuator driver (12V). ​ 4 .Battery Monitoring: Resistor voltage divider linked to RA-09H ADC. ​ 5 .Connectors: Battery input, motor output, programming header, basic protection. 6 .Testing: Dedicated test points and exp...

About us We're a small climate technology company building solar-powered IoT monitoring devices that run off-grid in the field. Our design uses off-the-shelf components, and we write the device software in-house. We're looking for an experienced engineer to review our design and advise us, not to build it from scratch. We're also coming to Shenzhen to source components and have contacts there, the ideal candidate would also be able to help in finding the right suppliers. What you'll do - Review our hardware design and advise on components, connections and protocols - Advise on low-power and solar/battery design, and on outdoor enclosures and connectors - Review parts of our device code where your experience helps - Recommend reliable suppliers in Shenzhen, and poten...

I am looking for an experienced mechanical engineer to develop an innovative, ultra-thin, fully mechanical image-switching system for a premium corporate product catalog. Main requirements: - Overall panel dimensions: 350 × 250 mm (landscape). - Fixed viewing window: 110 × 90 mm, displaying one complete photograph at a time. - Capacity: Up to 25 different photographs. - Total thickness target: 4–6 mm, with an absolute maximum of 8 mm, including both front and back covers. - Operation: A small, recessed, mouse-style scroll wheel. A short, light finger movement must advance exactly one image. - Precise image alignment and reliable mechanical indexing. - Continuous cycling through all 25 images, returning to the first image without manual resetting. - Completely mechanical...

I'm looking for a senior hardware engineer to design the schematic for a compact, battery-powered magnetic wireless charger for iPhone (Qi transmitter, 5–7.5 W output, single-cell Li-ion). Must have proven experience in Qi wireless charging transmitters, power electronics, and lithium-ion battery charging and protection. Deliverables: complete schematic, BOM with manufacturer part numbers, power budget and thermal calculations, and editable source files. All design IP and source files assigned to me. Fixed price only. NDA required before full specification is shared. In your bid, please answer: 1. Which Qi transmitter chip would you use, and why? 2. Show a past wireless charging transmitter project you designed.

I want to manufacture a series of plastic forms that will let me cast interlock pavers and curbstones in distinctive, non-standard geometries. My main objective is إنشاء أشكال مخصصة that set my product line apart from the typical rectangular or hexagon blocks already on the market. What I already have • Rough sketches of several patterns and target dimensions • Reference photos showing surface textures I like • Basic knowledge of the concrete mix and vibration table I will be using What I need from you Design-ready files and clear manufacturing guidance so a local toolmaker can produce strong, durable injection molds that release the concrete easily, hold tight tolerances, and survive daily use. Deliverables • 3D CAD models of each mold cavity (STEP and...

Job Title: Technical Textile Engineer / Industrial Pattern Developer – Custom Hardware Enclosure Job Overview: TyQuanNae Ltd Co is seeking an experienced, independent Freelance Textile Engineer / Industrial Pattern Developer to design the proprietary technical fabric components for our Modular Quick-Deployment Basecamp Enclosure. This product features a custom mechanical or pnuematic structural frame. You will be collaborating directly with our French CAD Engineer to design fabric components that interface seamlessly with a solid mechanical geometry. Core Deliverables: • Develop complete, highly accurate 2D flat-cut textile patterns, layout profiles, and manufacturing-ready nesting strategies based on our frame dimensions. • Create customized fabric component ...

I’m working on a new piece of industrial equipment and need a tightly-packed PCB dedicated to reliable power management. Space inside the enclosure is scarce, so the board must stay as compact as possible without sacrificing robustness or serviceability on the factory floor. Your job is to take my preliminary block diagram and turn it into a production-ready design: schematic capture, multilayer layout, and the full manufacturing package. I’m flexible on tools—Altium, KiCad, or Eagle are all fine—as long as the output meets standard IPC guidelines and can go straight to my fabricator. Deliverables I need from you • Editable schematic and PCB layout files • Clean Gerber/NC drill set plus IPC-356 netlist • BOM with manufacturer part numbers and cu...

I'm looking for a skilled product designer to create a unique consumer radio that falls under the category of plant accessories. Key Requirements: - Design a physical radio product - Target consumer use, integrating functionality with aesthetics - Create a design that complements plant accessories Ideal Skills and Experience: - Expertise in designing consumer products - Strong understanding of plant accessory market - Experience in creating aesthetically pleasing, functional designs - Proficiency in CAD and product design software Looking for innovative, practical, and market-ready design solutions.

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I’m developing a next-generation Bitcoin miner, internally labelled “400,000,” and I need an engineer or small team to drive the research-and-development phase. My priorities are clear: push Energy efficiency as far as current silicon will allow, unlock higher Processing power than today’s leading rigs, and experiment with new or optimised Mining algorithms. I also want the design to remain flexible enough to switch over to Bitcoin Cash should comparative profitability shift. At this stage the unit’s final home is undecided—my form literally says “Dinner,” which simply means I’ll be bench-testing the prototype in an ordinary room rather than a purpose-built data centre. Noise, thermal load and power draw therefore have to stay within l...

The existing board is finished and working; the only task still open is replacing two connectors: • Change the current USB connector to a USB-C footprint that I have already created. • Replace the end-of-board black connector with an IDC-Connector-2x3 footprint, also ready to drop in. All footprints are tested in KiCad, Altium, and the other common suites, and the complete Altium project files are available for reference. No further layout changes are required, and I do not need help with assembly. Deliverables I expect: 1. Updated schematic symbols pointing to the new footprints. 2. Cleaned-up PCB layout reflecting the two swaps, DRC-error-free. 3. Gerber/ODB++ plus native design files in whichever major tool you prefer (Altium, KiCad, etc.). Once these files are d...

Max bid is 45 ### Project: Modify Existing Dispenser PCB for RS485 Communication We have an existing PCB for a specific fuel dispenser brand (XYZ), as shown in the attached image. It connects to the dispenser through four differential communication wires: RX+, RX−, TX+, and TX−, and currently converts the communication to USB. **The objective is to replace the USB interface with RS485 while retaining the existing PCB and dispenser-side circuitry as much as possible.** ### Scope of Work - Analyze the PCB and identify the USB controller and the communication signals between the USB controller and the existing four-wire interface circuit. - Determine the appropriate signal points where the USB communication interface can be bypassed or replaced. - Connect those signals to a sui...

Two of my grill-sensor cables lost their 3.5 mm tips when the plugs were yanked out. The conductors are still intact, so the job is a straightforward re-termination: remove the damaged ends, solder on brand-new 3.5 mm connectors, and add proper strain relief and heat-shrink so the leads can handle outdoor use. I don’t yet have the replacement plugs and would appreciate your guidance on the exact TRS/TRRS style and brand that will mate cleanly with the grill’s jack. Once I order (or you supply) the parts, I’ll ship the cables to you—or, if you’re local, drop them off—to have the work done. Deliverables • Two fully functional cables with new 3.5 mm connectors, electrically verified for continuity and short-free operation • Photo (or brief vid...

We are seeking an experienced Industrial / Physical Product Designer to help conceptualize, refine, and bring new physical products from initial idea to production-ready design. You will work closely with our team to turn functional requirements into durable, user-centric, and cost-efficient designs ready for commercial manufacturing. Key Responsibilities: Concept & Ideation: Generate multiple design concepts, ergonomic layouts, and sketch iterations based on technical specs and market use-cases. CAD Modeling & Technical Specs: Create detailed 3D CAD models (SolidWorks, Rhino, Fusion 360, or equivalent) and comprehensive 2D manufacturing technical drawings with exact tolerances. DFM (Design for Manufacturing): Select suitable materials (polymers, textiles, metals, composites) a...

I'm looking for an experienced electronics engineer to develop a balance charger and discharger specifically for RC drones. The charger should support LiPo and Li-ion batteries, with a maximum voltage of 16.8V. Key Requirements: - Balance charging and discharging functionality - Support for LiPo and Li-ion battery types - Maximum voltage support of 16.8V - Suitable for RC drones - The user should be able to select the battery type, battery cells(1s,2s,3s,4s), calibrate voltage, modes such as quick charging/balance charging/discharging/storage charging. - The user should also be able to select the current. Ideal Skills and Experience: - Expertise in battery management systems - Expert in RC battery such as LiPo and Li-ion battery - Knowledge in embedded systems - Knowledge designing ...

I have a few tool pouch designs I want to combine for a new electrician’s tool pouch and I need them converted into fully-specified technical drawings that a manufacturer can take straight to prototype. Scope • Front, back and side views with exact compartment dimensions • Clear detailing for the belt clip and the adjustable leg strap • Material and stitching recommendations (I’m open to suggestions) • Drawings ready for manufacturing prototype use • Editable AutoCAD (.dwg) files plus print-ready PDFs • Two rounds of revisions included What I’m looking for Ideally you’ve already designed tool bags, workwear accessories or other sewn products and can show comparable projects. Being Australia-based is a plus because it kee...

I’m preparing to enter the industrial design job market and need my résumé reworked to target graduate and junior Industrial Designer, Product Designer and relevant Design Engineer roles. I want it to tell a clear story about my skills, experience and potential, so hiring teams can see how I would contribute in my first full-time position. I’m looking for a concise, accomplishment-focused résumé that showcases my design thinking and technical capabilities, reads well to recruiters and is formatted appropriately for applicant tracking systems. Ideally, you have experience helping people secure roles in industrial design or related fields and understand how to communicate design, CAD and prototyping experience without relying on generic buzzwords. I ...

I’m gathering a set of fresh, practical ideas that tackle current roadblocks in our product-development flow. My focus is on problem-solving brainstorming rather than broad blue-sky concepts—I need suggestions that can be explored and tested quickly. Here’s what will help me most: • A concise list of at least ten actionable ideas, each aimed at improving product design, feature prioritisation, or the overall build process. • For every idea, a brief note on expected impact, estimated effort, and any relevant tools or frameworks that support implementation (Figma, Jira, rapid prototyping stacks, etc.). • A short rationale showing how each idea addresses a specific pain point or unlocks new value for users. I’ll review the ideas against clarity, no...

Phase 1 only: 30–60 minute preliminary mechanical review of my patented tripod vehicle jack concept called StepJack. I need a mechanical engineer or prototype engineer to look at one concept image and the written description, then identify the top load-path risks, manufacturability concerns, and next prototype steps. StepJack is a foot-operated 120° three-leg tripod vehicle jack intended to lift one vehicle corner for roadside tire service, similar to an OEM scissor jack, but with less hand cranking and less kneeling. The design includes a true three-leg tripod base, rear leg opposite the foot pedal, Acme screw lift, ratchet-and-pawl foot pedal drive, U-channel pinch-weld saddle, anti-spread struts, and compact central hub. It may also include an optional piston/hydraulic assi...

I'm looking for an individual freelancer or small workshop to build a simple, one-off working prototype for a project. My budget is around ₹10,000. The concept is a machine that heats medicinal leaves and draws the smoke through a filter into a small chamber, with controlled release through a valve. I have a concept sketch to share. I need help with the engineering, safe design, fabrication and testing. This is for a one-time project submission, so the prototype can be made by modifying existing devices available in the market - whatever keeps it simple and under budget. Please let me know whether you can build this within the budget, what would be included, and what details you need to assess feasibility.

Job Title: Technical Textile Engineer / Industrial Pattern Developer – Custom Hardware Enclosure Job Overview: TyQuanNae Ltd Co is seeking an experienced, independent Freelance Textile Engineer / Industrial Pattern Developer to design the proprietary technical fabric components for our Modular Quick-Deployment Enclosure. This product features a custom inflatable pneumatic frame. You will be collaborating directly with our French CAD Engineer to design fabric components that interface seamlessly with a solid mechanical geometry. Core Deliverables: • Develop complete, highly accurate 2D flat-cut textile patterns, layout profiles, and manufacturing-ready nesting strategies based on our frame dimensions. • Engineer designs accommodating harsh weather conditions, including lay...

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...

Go through it.. Design already available here .. Want the Complete Tested Product.

I am developing a statement line of gold- and silver-based geometric brooches and need a seasoned jewelry designer who can translate my ideas into a full production-ready tech pack. The collection will feature large pieces—each larger than 4 cm—built around bold, intricate geometry. While I have no fixed preference for a single shape, I’m drawn to complex outlines that are vintage. Your creativity in pushing geometric boundaries is welcome, provided the final forms remain manufacturable in precious metals. What I need from you • Concept sketches or initial CAD renders that explore several complex geometric silhouettes. • Finalised CAD files (Rhino, Matrix, or comparable software) with front, side and isometric views. • Precise dimensions, weight esti...

I'm seeking an experienced jewelry designer to create a comprehensive tech pack for a line of geometric brooches. The brooches will be made of gold and silver. Key Requirements: - Detailed design drawings of geometric brooches - Specifications for gold and silver materials - Assembly instructions - Size and dimension details - Ideal Skills and Experience: - Jewelry design expertise, particularly with brooches - Proficiency in creating tech packs - Knowledge of working with gold and silver Please provide samples of previous work.

Ignition HMI/SCADA screen designer — operator UI redesign (regulated life-sciences) I’m looking for an experienced HMI/SCADA designer to redesign a set of operator screens for a regulated life-sciences application. The existing screens work but need a cleaner, modern, more user-friendly redesign. Scope: Redesign existing operator screens for clarity and ease of use Good HMI practice: clear layouts, logical navigation, readable alarm/status presentation, consistent styling Deliver a clean, modern, professional look Ideal experience: Ignition (Perspective and/or Vision) — required Industrial HMI/SCADA screen design Familiarity with GMP / 21 CFR Part 11 environments a plus Please share relevant HMI/SCADA work samples. Project specifics and screens shared only with the ...

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'm looking for an experienced CAD designer to create 3D designs for a metal prototype. Key Requirements: - Proficiency in 3D CAD design tools - Experience with metal prototyping - Ability to create detailed, accurate, and manufacturable designs - Strong attention to detail and problem-solving skills Ideal Skills and Experience: - Background in mechanical engineering or industrial design - Previous work with metal materials - Familiarity with prototyping processes and requirements Please include samples of similar work in your bids.

I have a small troupe of already-fabricated hand puppets that look great on camera but they still need some behind-the-scenes muscle. My main goal is to boost their overall durability so they can stand up to frequent rehearsals, travel, and live performances without losing their shape or responsiveness. The area that needs the most attention is the moveable mouth plate. I’m happy with the fabrics and foams I’m using, but the plate design itself isn’t giving my performers the smooth, snappy movement we want. I need a fabricator who can rethink that internal mechanism, sketch or prototype an improved design, and then retrofit it into the existing builds without altering their external appearance. Deliverables • An upgraded mouth-plate design that drops neatly ...

I'm looking for a skilled PCB designer to create a small, single-layer PCB for prototyping purposes. Requirements: - Size: Small (e.g., 2x2 inches) - Layer: Single layer Ideal Skills and Experience: - Expertise in PCB design software (e.g., Eagle, Altium, KiCAD) - Experience with single-layer PCBs - Ability to provide a prototype-ready design Please provide examples of previous work and estimated delivery time.

I'm seeking a skilled designer to create a prototype for a fishing seat/storage box combination. Requirements: - Primary material: Plastic - Essential features: Waterproof compartments, multiple storage sections, and easy to carry - Existing rough drawings and AI-generated sketches available - Minor refinements needed on current designs Ideal Skills & Experience: - Experience in product design, especially with plastic materials - Knowledge of waterproofing and storage solutions - Proficiency in translating sketches into workable prototypes - Strong attention to detail for minor design adjustments Ideally I want someone in the Midlands area of the UK. I don't want any approaches from

BULLETIN 1 — MECHANICAL / FEASIBILITY ENGINEER (Paid Contractor Engagement) Title: Paid Feasibility / Mechanical Engineering Contractor — Adult Powered Upholstered Recliner Concept (California Startup) ReclineABear LLC (California) is developing an adult-oriented, plush, powered upholstered recliner concept. We are seeking an experienced mechanical engineer or product-development contractor for a limited, paid early-stage feasibility engagement. Scope (after signed mutual NDA + services/IP agreement + SOW): - Review and refine steel-frame / mechanism concept for loads, joints, tolerances, and build plan - Provide manufacturability and safety-boundary input (no certification or medical claims) - Support controlled prototype path documentation Requirements: - Demonstrated exp...

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...

I have a hand-sketched concept for a small wand that lets me scan an animal’s eye. The sketch already shows the overall shape, plus the exact envelope sizes of the onboard camera module and its paired LED. What I need from you is a clean, manufacturable 3D design that can be printed first in resin (that is the process I will be using for the prototype) and later adapted for mass production. Ergonomics matter: the handle must feel secure in one hand with a comfortable grip contour, yet keep the overall body as slim and streamlined as my sketch indicates. Please build the model around the camera and LED dimensions I supplied, allowing easy drop-in assembly and cable routing. Make sure the LED window is optically clear and that the sensor sits on axis with the bore to avoid parall...

I'm seeking an experienced mechanical drafter to create precision drawings for a machine part I'm prototyping. Requirements: - Convert hand-drawn sketches and CAD designs into professional mechanical drawings - Develop complete designs from scratch for any undefined components - Ensure accuracy and adherence to industry standards Ideal Skills: - Proficiency in CAD software - Strong understanding of mechanical design and prototyping - Attention to detail and accuracy Please include samples of previous work.

Quiero desarrollar una placa basada en ESP32 que integre un módulo celular para un prototipo de producto. Necesito que el diseño contemple: • Esquema eléctrico completo, layout de la PCB y archivos Gerber listos para fabricación. • Integración del ESP32 con un módem que permita conectividad a través de tarjeta SIM. • Selección, optimización y “matching” de la antena — cuento con flexibilidad para antena interna o externa mientras se garantice un rendimiento fiable. • Lista de materiales (BOM) con componentes disponibles en el mercado y alternativas. • Recomendaciones de pruebas de certificación (FCC/CE u otras) y buenas prácticas de diseño para cumplirlas....

Instalador de alarmas comunitarias con 14 años de experiencia en Chile. Desarrollo una central de alarma comunitaria propia y busco ingeniero electrónico con experiencia en potencia y RF para validar el diseño antes de fabricar las placas armadas (PCBA) en China. EQUIPO: central en gabinete metálico sobre poste, a la intemperie. Se activa con control RF o llamada; hace sonar sirena, enciende baliza y envía SMS. Hasta 250 usuarios, 50 reciben SMS. Panel web para administrar usuarios. HARDWARE: - ESP32 - SIM7600 4G (llamadas y SMS) - Receptor E07-M1101D (CC1101) 433 MHz ASK/OOK, controles de código fijo EV1527/PT2262 - Driver discreto de sirena y 2 relés - Batería 12 V 7 Ah - Antenas fuera del gabinete con SMA pasa-muro REVISAR: 1. E...

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...

Entwickler gesucht: Raspberry Pi 5 Dual-Display Car Dashboard Projektbeschreibung Ich suche einen erfahrenen Entwickler für ein modernes, selbst gebautes Fahrzeug-Dashboard auf Basis eines Raspberry Pi 5 mit zwei Displays. Ziel: Ein digitales Cockpit mit Tacho, Fahrzeugdaten, Infotainment und Steuerung ausgewählter Fahrzeugfunktionen. 1. Display 1 – Digitaler Tacho * Geschwindigkeit und Drehzahl * Tankfüllstand und Reichweite, sofern verfügbar * Motortemperatur und Batteriespannung * Warnleuchten und Fahrzeugstatus 2. Display 2 – Infotainment und Fahrzeugsteuerung * Übersichtliche Anzeige aller Sensorwerte * Reifendruck und Temperaturen * Beleuchtungs- und Kühlungsstatus * Touchscreen zur Bedienung ausgewählter Funktionen * Fahrzeugdiag...

Tengo listo el diseño de un pequeño expositor de sobremesa y busco a alguien en Málaga que pueda fabricarlo usando corte láser. Qué necesito • Producción del expositor a partir de mi archivo (puedo facilitar DXF, SVG o el formato que prefieras). • Material: madera contrachapada de buena calidad; también valoro la opción en metacrilato si cuentas con stock. • Cantidad inicial: 1 unidad para validar encajes y acabado, con posibilidad de repetir tiradas cortas más adelante. • Bordes limpios y sin quemaduras visibles; las piezas deben encajar a presión sin holguras. Detalles a concretar juntos – Espesor recomendado según tu experiencia para garantizar rigidez. – Tipo d...