Circuit design jobs

...custom carrier/breakout PCB for a compact handheld device. No firmware or software needed — design only. Core Module: LILYGO TTGO T-Call V1.3 (ESP32 + SIM800L GSM) — mounted on the PCB via pin headers Components to integrate on PCB: OLED Display (SSD1306 128x64, I2C, 4-pin): Mounted above the PCB using standoff spacers — 4 mounting holes required Height will be adjusted with standoffs 4-wire cable from display soldered directly to PCB pads Buttons: 1x membrane switch connector (2-pin) for main button 2x additional button footprints connected to spare GPIO pins (for future use) Buzzer: Passive buzzer mounted directly on PCB Connected to designated GPIO via NPN transistor + flyback diode driver circuit (active HIGH trigger) RDM6300 RFID Reader: Prope...

...fundamental "Lock-Claim-Refund" PoW state machine. The Challenge: Deliver functional Mock Tokens and a verified HTLC within 48 hours. Audit: Provide a Refund Transaction Hash (Lock -> Timeout -> Refund) proven on-chain. Verification: All contracts verified (Green Checkmark) on explorer.bitnetmoney.com. PHASE 2: ZK-Circuit & Verifier Integration ($150) Goal: Integrate the zero-knowledge privacy layer (inspired by Polygon's recursion/verification logic). Deliverables: .circom circuit + BN254 Solidity Verifier. Logic: Prove knowledge of secret without revealing preimage. Implement Nullifiers. Setup: Conduct Phase 2 Trusted Setup contribution for .zkey parameters. PHASE 3: Sovereign React DApp & Publication ($200) Goal: Validate proof gen...

I need someone to pick up 1-5 civil case complaint files from the Alexandria Circuit Court and deliver them to me digitally as scanned copies. Ideal skills and experience: - Familiarity with legal documents and court procedures - Reliability and attention to detail - Ability to scan and send documents electronically

Create a kart racing track for Kart Racing Pro (based on real circuit) Job Description: I am looking for a 3D artist with experience in racing simulators to create a kart track for Kart Racing Pro. The track is a real kart circuit called Spreewaldring Kart Track (Germany). I will provide satellite images and onboard videos as reference. The goal is to create a fully working track that can be imported and used in Kart Racing Pro. Requirements: Create track layout based on satellite image Track length approx. 800 meters Track width around 8–9 meters Include asphalt, kerbs, and basic terrain Low-poly optimized mesh for racing simulator performance Important: The track must be prepared for Kart Racing Pro track format, including proper surfaces and structure. Deli...

...sleep. Solar-charged LiFePO4 battery. Designed for use on both standard Telstra cellular (Band 28, 700 MHz) and the new Starlink Direct-to-Cell satellite network (Band 7, 2600 MHz). What We Need A PCB designer to take our complete hardware specification and produce manufacturing-ready design files — schematic, layout, Gerbers, and BOM. Optionally, build 3–5 prototype boards for field testing. Production runs (Phase 2) will go to a dedicated fab house. Two-Phase Approach **Phase 1 (this engagement):** Design files for a dev/test board, with optional prototype build (3–5 units). We're optimising for speed and low cost, not miniaturisation. Off-the-shelf dev modules (ESP32-S3 DevKit, EG800Q breakout, u-blox M10 breakout) on a carrier PCB are accepta...

I need a custom-designed PCB for home automation applications, built around the ESP32 DevKit V1. The PCB will control: - AC loads via Omron G5LE SPDT r...AC load output, and 12V RGB outputs. - Status LEDs for debugging and system monitoring. Requirements: - Compact and small form factor - Standard KF301 series connectors - Improvement related safety - Songle high Power 30a relay replacement - 240ac to 5v 2a DC power supply design - Require editable full source file Ideal skills and experience: - Expertise in PCB design - Experience with high-voltage and low-voltage circuit integration - Familiarity with ESP32 and home automation systems - Proficient in using design tools like KiCAD or Altium or EasyEDA Please provide samples of previous work and an est...

Project: Revit Structural + MEP Modeling and Clash Det...architectural layout. • Provide structural floor plans. 2. Plumbing Layout • Model plumbing systems including: • Water supply pipes • Drainage pipes • Basic plumbing fixtures connections • Ensure routing is realistic and coordinated with the building layout. 3. Electrical Layout • Add electrical components such as: • Lighting fixtures • Switches • Power outlets • Create basic electrical circuit layouts where necessary. 4. Clash Detection • Export the completed model and perform clash detection in Autodesk Navisworks Manage. • Run clash tests between: • Structural vs Plumbing • Structural vs Electrical • Plumbing vs Electrical &b...

We are three South-African hip-hop artists ready to hand over the business side of our careers to someone who knows the local circuit inside out. The immediate mission is simple: turn our calendar into a steady stream of paid shows and open doors to bigger stages. During an initial unpaid “free-runner” period, I’ll be judging how quickly you can: • Secure live bookings that make sense for our brand and audience size. • Leverage your own network to connect us with established acts and promoters. • Handle core artist-management tasks—advancing shows, negotiating fees, keeping comms tight—so we stay focused on music. If that trial proves you’re the right fit, the full contract will be signed in-person with our senior partner, whe...

We are a climate-tech company based in Coimbatore, India, seeking an experienced Electrical Control Panel Engineer or UL/CSA-certified Fabricator to design and build a compliant industrial control panel for export to Canada. The panel must meet UL 508A (USA) and CSA C22.2 No. 286 (Canada) standards. The system will power and control our environmental air-purification unit integrated with IoT/PLC components. Scope of Work: Design, fabricate, and document a complete industrial control panel using UL/CSA-certified components. Include a Main Power Cord (SOOW or SJTO type) and a UL-listed Circuit Breaker (Type C or D curve) for primary overcurrent protection. Integrate a DIN-rail mounted SMPS (24VDC output) to power either a PLC (Allen-Bradley/Siemens) or a custom PCB-...

...prediction. Possible sources include: Open-access datasets IEEE Dataport Public research datasets Datasets used in previous academic papers If necessary, synthetic data generation approaches used in research papers can also be considered. 3. Transformer Fault Simulation Assist in identifying electrical faults in distribution transformers, such as: winding faults insulation failure overheating short circuit faults partial discharge Then help simulate these faults to generate data for predictive maintenance research. Possible tools: MATLAB MATLAB Simulink PowerWorld other power system simulation tools 4. AI Model Preparation Assist with setting up a baseline predictive maintenance model using: Machine Learning techniques (SVM, Random Forest, etc.) Evaluation metrics such as accurac...

Note - I want someone to make & get one machine ready for me so please bid if you can handle everything from design to manufacturing. I am developing a compact, battery-powered device that continuously feeds a roll of sticky mat across a doorway so the exposed surface always stays clean. The concept is simple: a fresh section of mat is pulled from one spindle, laid flat, and the used layer is wound onto a take-up reel. Here’s what I already know I want: • Time-based automatic control that advances the mat precisely every hour. • A low-profile, walk-safe deck suitable for hospital corridors and dusty construction entries alike. • A rigid steel frame for durability, yet light enough to remain truly portable. • Quiet, sealed gear-motor driven by a rechar...

I need a PCB design expert to verify my work done in EasyEDA. Key requirements: - Check schematic accuracy and component placement. - Review and correct errors. - Simulate circuit behavior. - Check for manufacturing issues. Ideal Skills and Experience: - Proficiency in EasyEDA. - Strong understanding of PCB design principles. - Experience with error checking and simulation. - Familiarity with manufacturing processes and potential issues. Please provide a portfolio and relevant experience with similar projects.

...covering switch footprint, board dimensions, and mounting points Acceptance criteria: • Board fits within a 173 mm × 92 mm × 1.6 mm envelope ( Needs Confirmation ) • All nets pass your own DRC/ERC checks and a final review with me before ordering proto boards Once I sign off on the design files, we’ll move to a quick prototype run, so please allow for at least one round of revisions. The picture is of one Set of components. This connects to a series of relays that have 16 relays per board. So this circuit needs to be repeated 16 times ( with input and output screw terminals ) An upload of the Relay board that the new PCB will connect to has been attached now. There is no need for connections to this board as it physically just screws on stan...

...“Plaintiff’s Motion for Order Referring Case to Settlement Proceedings Before the District Judge and for Limited Stay of Further Proceedings.” The draft opposition is already in place, but it needs a seasoned eye. I want you to: • Polish the writing for clarity, persuasion, and compliance with the Court’s local rules. • Strengthen the brief with on-point case law—particularly recent Ninth Circuit and Supreme Court authority—that rebuts Apple’s arguments. • Make sure the table of authorities is accurate and complete. • Craft or refine the accompanying motion seeking referral to settlement and a brief stay, tying it to Northern District ADR guidance and any relevant precedent. I will provide the current draft, A...

...footing up. That means foundation plan, wall and roof framing, roof plan, sections, details, door and window schedules, notes—everything normally expected in a residential permit set. Electrical requirements I would also like you to add a basic electrical layout. Nothing elaborate: just show circuit runs, panel location, switches, and fixture symbols. The garage must include dedicated 120 V outlets along the workbench wall for power tools, ceiling-mounted LED lighting fixtures, and a 240 V circuit and receptacle for a future electric-car charging station. Deliverables • PDF set suitable for permit submission • Editable CAD (DWG or similar) for future changes If you have questions about local code nuances or need any additional dimensions, let me kn...

Freelance Hardware Engineer – Altium PCB Design Review (Remote Access) We have an existing Pulse Converter PCB designed using Altium Designer and are looking for an experienced freelance hardware / PCB design engineer to perform a technical design review. The work will be done via remote access to our computer (AnyDesk / TeamViewer). Design files will not be shared. Detailed circuit functionality and design context will be explained after mutual agreement and confidentiality alignment. Scope of Work: Review the schematic and PCB layout in Altium Designer and identify potential design issues, risks, and improvement points, including but not limited to: Power input and regulation (wide-range DC input) Relay driver circuits Optocoup...

...means accurate placement and clear labeling of all receptacles, switches, lighting fixtures, and circuit paths, with attention to safety clearances and code-mandated spacing. I also need a logical circuiting scheme that feeds into a properly formatted panel schedule. Please include a bill of materials that lists every device, fitting, and conductor by quantity and specification, organised so a class instructor can check it quickly. Deliverables • AutoCAD DWG showing the scaled architectural floor plan and complete electrical layout • PDF plot set ready for printing • Bill of Materials (spreadsheet or table) with part numbers, descriptions, and counts • Panel schedule detailing circuit numbers, breaker sizes, wire gauges, and load descriptions ...

I need a robust arc-suppression circuit engineered specifically for my RF welding machine. The goal is simple and non-negotiable: stop destructive arcing before it reaches the generator or matching network, protecting the entire system from costly downtime and repairs. Key points you should know up front • Purpose: prevention of equipment damage only—operator safety circuits are handled elsewhere. • Architecture: solid-state components throughout; no relays or mechanical contacts. • Ratings: I will share the operating voltage and current range once we start, so your design must be adaptable within those limits. What I expect to receive 1. Schematic with clearly labeled protection stages (detection, quench, reset). 2. Bill of materials with ...

...preamp circuit, but the PCB is too large for my application. I need an experienced electronics engineer to analyze the existing design and redesign it into a much smaller PCB. The new design must maintain similar electrical performance but reduce the physical size so it can be mounted directly on the piezo sensor and permanently sealed with epoxy resin inside a capsule. Primary Objectives 1. Analyze or replicate the functionality of my existing piezo preamp. 2. Redesign the circuit into a very small PCB (target size ~10mm × 10mm). 3. Maintain good signal quality and low noise. 4. Optimize the design for piezoelectric sensor input. Technical Requirements • Designed specifically for piezoelectric sensor input • High input impedance...

I’m ready to move GuatePCB (a nearshore PCB assembly factory in Guatemala) from concept to market with a distinctive standalone logo mark / icon (no text included—this is purely the symbol). The core idea fuses the long-tailed silhouette of the Quetzal (Guatemala's national bird) reimagined as elegant PCB circuit traces, vias (filled circles/pads), and solder points. The icon must feel high-tech/precise yet subtly proud of Guatemala—modern, minimalist, organic geometry that integrates naturally. It needs to read clearly at favicon size (16×16 px) while scaling cleanly to large formats like factory signage, embroidery, or product labels. Reference / Starting Point (Please Base Designs Closely On This): Use the attached AI-generated reference image as your...

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I am building a tiny GPS tracker device for my company and need an experienced PCB designer. Project Requirements: - Design schematic and PCB layout for a compact GPS tracker. - Use SIM7080G (LTE/NB-IoT with GNSS) module. - Include SIM card slot, GPS antenna connector, LiPo battery connector, and charging circuit. - Board size should be approximately 18 mm x 20 mm. Deliverables: - Complete schematic - PCB layout - Gerber files for manufacturing - Bill of Materials (BOM) - Pick and Place file (optional) Preferred Tools: KiCad, Altium Designer, or EasyEDA. Experience Required: - Experience designing IoT or GPS tracking devices - Knowledge of RF layout and antenna placement Budget: $30 – $50 (negotiable) Please share examples of previous PCB designs.

needs a fresh, minimalist logo that instantly signals two things: cutting-edge automotive technology and reliable repair expertise. The name itself should remain the focal point, but feel free to weave in subtle automotive or tech cues—whether that’s a clean line hinting at a vehicle silhouette, a stylised circuit trace, or any other clever visual metaphor you believe will keep the design sleek and uncluttered. I’m deliberately leaving both the colour palette and supporting graphics open. Surprise me with combinations that balance professionalism with innovation; the only hard rule is to keep the overall feel minimalist. Whether you lean toward a single accent colour on white or a darker tech-inspired scheme, justify the choice in a short rationale so I ca...

Implementation of additional safety features and protection systems in the 100W USB-C GaN hub design, including overcurrent protection per port, total power budget control, thermal monitoring, short-circuit protection, and input surge protection, ensuring safe power distribution across alol ports

I need eyes and feet on the ground at the Patrick County Circuit Court in Stuart, Virginia to pull a civil court file and send me complete, legible copies of everything it contains. This is strictly a document-retrieval task—no legal analysis required. Here is what I will provide once we start: • The exact style of the case, docket number and any clerk reference details. • A signed letter of authorization, if the clerk requests one. What I need from you: 1. Visit the courthouse during clerk’s office hours. 2. Locate the specified civil case file. 3. Copy every pleading, motion, order, judgment and exhibit in the file. Digital scans (PDF) are ideal; high-resolution photos are acceptable if scanning is impossible. 4. Confirm the file is complete by comp...

...have a JPEG of my existing logo and I simply need it rebuilt—no tweaks, colour shifts, or layout changes—so I can use it at any size without losing quality. Once the logo is perfectly replicated, I want you to apply it to a business-card layout I’ve already sketched out. The card will carry: • my name, 2nd person name, phone number, email, website, location • the replicated company logo + circuit design Please deliver: 1. The logo in clean, editable vector formats (AI, EPS, PDF) plus web-ready PNG. 2. A press-ready business-card file (PDF with bleed and crop marks) and the working source file (AI or InDesign). Accuracy is everything on the logo; colours, spacing, and proportions must match the JPEG exactly. Let me know which software yo...

...isolated DC voltages without tying the reference points together. Whether that means introducing isolated amplifiers, optocouplers, tiny transformers, or another proven technique is up to you; I’m open to whichever approach gives stable, repeatable results and keeps the measurement side safe for the microcontroller. Here’s what I’d like back: • An updated schematic that drops into my existing design, showing every connection required for proper isolation • A concise parts list with recommended component values and footprints I can actually buy today • A short rationale explaining how the proposed stage cures the isolation problem and what accuracy I can expect KiCad, Eagle, or even a clearly annotated PDF is fine for the schematic, as long ...

...clear set of AutoCAD 2D drawings to guide the contractors as the fit-out moves forward. I will share on-site photos, sketches and the existing soft-play layout (already drafted) so you can coordinate your work with what is in place. Electrical layout • Show every power socket, lighting allocation and the main distribution board, plus dedicated points for the air-conditioning units. • Label circuit runs and load notes where practical so the electrician can price and install without guesswork. Floor build-ups • Produce plans and sections that indicate sand fill, concrete fill and tile finishes, with thicknesses called out so the flooring crew can pour and level correctly. Staircase & mezzanine • Detail the staircase fixture and the mezzanine cover...

...also re-planning the attached toilet to improve flow and storage. Also New Layout for Terrace and Kitchen, Dinning room at Ground floor What I am looking for • Optimised furniture placement for both bedrooms, living–dining and kitchen that supports easy movement and future flexibility. • A coordinated lighting plan—ambient, task and accent—showing fixture positions, mounting heights and circuit groupings. • Revised bathroom layout that merges seamlessly with the new bedroom arrangement while respecting existing plumbing drops. • Scaled drawings (AutoCAD ) so I can verify proportions before we go on site. I will share the current floor plan, structural walls and service shafts. Please return the first draft layout within a week s...

Embedded Hardware & Firmware Expert Needed for Industrial 3-Phase Pure Sine Wave Inverter Project Overview: I am seeking an experienced Power Electronics and Embedded Systems Engineer to design the hardware and firmware for an Industrial-Grade 3-Phase Pure Sine Wave Inverter. The project involves designing multiple PCBs (MCU Motherboard, IGBT Driver, Thyristor Driver, and Sensing Interface) and developing robust firmware for system control, monitoring, and HMI integration. 1. Hardware Specifications & PCB Requirements: You will be responsible for designing the following industrial-grade PCBs: • MCU Motherboard: Based on Texas Instruments (TI) or Microchip architecture. Must handle PWM modulation and system logic. • IGBT Driver PCB (3-Phase): Industrial grade, optim...

I have already drafted a full specification for a simplified television remote control aimed at older users, complete with ergonomics, button layout, and overall product vision. While I finish the patent application, I now need a skilled partner to bring the electronics and software to life. On the hardware side, the priority is circuit design. I will share detailed functional blocks, power-budget targets, and regulatory constraints; you would translate these into a clean schematic that is ready for board layout (I will also welcome help on the actual PCB routing once the schematic is locked). For software, I need both the embedded code that will run on the microcontroller and the on-screen user interface logic that appears on the TV. Simplicity and reliability for elderly ...

I’m developing a compact data-acquisition module and need a local electronics engineer in Austin who can take the mixed-signal front-end from concept to ready-to-fab documentation. The heart of the job is a clean, low-noise analog section feeding a high-resolution ADC, wi...flexible if you can justify an alternative. Deliverables: • Complete schematic and PCB layout files • BOM with manufacturer part numbers and estimated lead times • Simulation results that demonstrate noise, linearity, and power figures meet spec • Brief bring-up report after first prototype, highlighting any deviations and suggested fixes If you’re comfortable coupling precision analog design with solid digital practice and can meet in the Austin vacinity, let’s tal...

I need an expert to overhaul the control electronics on our solid swimming pool cover and modify the control circuits. The goal is to improve existing functionality and enhance automatic cover operation. Key tasks include: - Improving existing control circuits - Enhancing automatic cover operati...overhaul the control electronics on our solid swimming pool cover and modify the control circuits. The goal is to improve existing functionality and enhance automatic cover operation. Key tasks include: - Improving existing control circuits - Enhancing automatic cover operation Ideal Skills and Experience: - Proficiency in electronics and control systems - Experience with automation and control circuit modification - Knowledge of pool cover or electric gate systems - Strong problem-solv...

...detailed warehouse structure exported from Tekla Structures in IFC format. What I now need is a coordinated MEP package—both electrical and plumbing—inserted directly into that same model without remodelling any of the structure. Electrical scope • Develop a complete lighting layout for every bay, size and circuit all luminaires, and produce a power-distribution scheme from main board to final outlets. • Use current European electrical codes and recognised symbols. Plumbing scope • Design water-supply and drainage lines serving every sanitary block, kitchen and toilet noted on the GA drawings. • Pipe sizing, slopes, venting and fittings must satisfy the latest European plumbing standards. Model handling • Work directly insi...

NOTE: The labor budget for this project is strictly ₹5,000 INR. I will buy and ship the parts to you separately. I am an independent R&D developer prototyping a compact, battery-powered thermal enclosure designed to maintain a strict 25°C internal temperature for sensitive transit. I am handling the 3D-printed enclosure and thermodynamics. I need an electronics freelancer to wire the circuit and write the C++ code on a breadboard. ​Your Responsibilities: ​Wiring: Wire the following components on a breadboard: ESP32 SuperMini, Micro Peltier Module (TEC1-04903), 2x 30mm 5V blower fans, Logic-Level N-Channel MOSFET, IP2368 Fast Charge Module, 3.7V LiPo battery, DS18B20 temp sensor, and a 0.96-inch OLED display with an EC11 Rotary Encoder. (Note: I will cover the cost of compone...

...efficiency. You will develop stamped drawings, load calculations, panel schedules, single-line diagrams, and a coordinated BIM/AutoCAD model that ties seamlessly into the mechanical and plumbing updates. During construction I’ll rely on you for submittal reviews, RFI responses, and periodic site inspections to confirm that the installation matches the design intent. Experience with Revit, AutoCAD, and either ETAP or SKM for short-circuit and coordination studies is expected, along with familiarity with NEC, NFPA-70E, and local authority requirements. Deliverables • Existing-conditions report with photos and load summary • Complete IFC drawing set (DWG + PDF) and calculation package • Bill of materials and equipment specifications • Con...

...vibe. To achieve that, please weave subtle streams of binary code and elegant circuit-board traces through the folds of the brain. These elements should read immediately as “data” yet never crowd the form. Colour is welcome, but keep the palette restrained so the illustration remains uncomplicated and modern. A limited set of cool tones with a single accent colour usually works best, though I’m open to your professional eye. Deliverables • Fully scalable vector file (AI or SVG) • High-resolution PNG on transparent background • A brief note explaining colour values and any fonts or icon sets, if used Acceptance Criteria • Clear, recognisable brain silhouette in minimalist style • Binary and circuit motifs integrated ...

Please be careful, you must create the 3 real PCBs; we are not interested in virtual projects. After the 3 PCBs have been successfully tested here in our office, we will release the money following the rules of freelacer.com. I will agree on the cost of the work and the time of execution with the developer. I've already built some prototypes of a circuit capable of switching a single 230 V, 16–30 A line to 4, 8, or 12 outputs—without power loss—but none of them have reached the standards I expect. I have schematics, calculations, thermal measurements, and test logs: enough material to clarify every technical detail and speed up your work. I need a senior designer who can transform all this into a final solution, complete with ESP32 firmware, a multilayer PC...

...portion of my digital design course and need hands-on support to design and fully implement multiplexers and demultiplexers. The goal is to move from logic-level concepts all the way to a working circuit that can be demonstrated in the lab. Here is what I’d like from you: • A clear derivation of the truth tables, Boolean expressions, and any Karnaugh-map (or equivalent) minimisation that leads to the final gate-level schematic. • An HDL version of the same circuit (Verilog or VHDL—whichever you prefer) that compiles cleanly and is ready for simulation. • Simulation results that verify correct operation for every input combination; ModelSim, Vivado, Quartus, or Logisim waveforms are all acceptable. • Brief, well-commente...

I am looking for a 3D Animator who can also write a professional voice-over ...voice-over script for a YouTube video titled: "What happens when you connect a capacitor directly to a DC power source?". The Workflow: Scripting: You will write the educational script (3-5 minutes). Review: I will review the script and record the voice-over (VO) myself. Animation: You will create the 3D animation and sync it perfectly to my voice-over. Visual Requirements: 3D visualization of a DC circuit (battery, wires, capacitor). Microscopic view showing electrons moving and accumulating on plates. Representation of the electrostatic field forming in the dielectric. Visual demonstration of "inrush current" vs. "steady state." Expertise in 3D software (3d max). Ability to...

I’m ready to move from rough sketches to a fully-specified electrical design for my new build and need a professional set of documents I can hand straight to the contractor and the local authority. The scope is the entire property: living areas, kitchen and bathrooms, all bedrooms, the utility room, a small studio, the loft conversion, plus outdoor circuits for external lighting and cabling that will feed two sheds/outbuildings. The final package must spell out circuit counts and loading, breaker and RCD selection, cable sizing, earthing and bonding details, and clearly show switch, socket and lighting points on coordinated floor plans. A single-line diagram and a board schedule are essential so the installer can see at a glance how everything ties together. PDF is f...

...That raw feed must be captured, cleaned, time-synced, and formatted for rapid hand-off to the variational quantum model. Key deliverables • Architecture diagram of the edge-to-cloud sensor network, including communication protocols and security touchpoints • Python-based acquisition and preprocessing code (MQTT/LoRaWAN ingestion through to a Pandas-ready dataset) • Variational quantum circuit(s) implemented in both Qiskit and PennyLane, wrapped so classical pre- and post-processing can call them interchangeably • Hybrid loop tying classical optimizers to the quantum backend, plus fall-back simulation for when real hardware is unavailable • Performance report with RMSE, MAE, and R² benchmarks against a baseline classical model • Pu...

We are looking for an engineer team which has a good PCB design skill and motor driver programming skill. This project is to upgrade our exhisting PCB(Old version→ prototype) to update version. We will make one prototype PCB to test. And we will break it down to two PCB for later (standard and downgrade version) This machine has the following system: 1 x main CPU (GD32F450IGH6) 1 x AC motor inverter (RS485) Command input 1x sensor Up to 5x stepping motor ( synchronized, need fast movement)　NCcode input/ Tool path input. Up to 5x sensor 1 x DC motor 1 x sensor 1 x SBC( RPI) need to connect to main CPU ( need to have fast communication ) 3 x stepping motor 3 x sensors 1 x DC brushless (small )-added 2 x stepping motor-added 3 x COM to other device. We will send the curre...

I’m putting together a small hobby circuit centered on about 16 operational amplifier based aidiotic filters and need a clean, single-layer PCB layout to bring it to life. The schematic is already available from TI for OPA1602. Here’s what I expect: • A single-sided layout, large ground planes, keeps traces short and avoids jumpers where possible. • Project files in KiCad - Schematic and PCB only. Nothing else is needed. Acceptance check: the files should load without DRC errors in the native tool, and a quick 3D view must confirm there are no component overlaps. Once these points are met, I’ll mark the project complete immediately.

I need a skilled electronics circuit designer specializing in power electronics. The project involves designing a power supply for a phone charging system using both AC and DC Key Requirements: - Design of power supply circuits - Experience with mixed-signal environments - Understanding of radio technology Ideal Skills: - Proficiency in analog and digital circuit design - Experience with simulation tools (SPICE, MATLAB, etc.) - Strong background in power electronics Please provide examples of similar work done.

I need a skilled electronics circuit designer specializing in power electronics. The project involves designing a power supply for a phone charging system using both AC and DC Key Requirements: - Design of power supply circuits - Experience with mixed-signal environments - Understanding of radio technology Ideal Skills: - Proficiency in analog and digital circuit design - Experience with simulation tools (SPICE, MATLAB, etc.) - Strong background in power electronics Please provide examples of similar work done.

PROJECT TITLE: Prepare ...LED screen) • Socket outlets • LED screen connection • Switching • Power routing from DB to equipment • Basic load indication (W or kW) • Clear circuit identification Single Line Diagram style is acceptable. Sheet 2 — HVAC Layout (SAD + RAD) Prepare HVAC layout showing: • SAD – Supply Air Diffuser locations • RAD – Return Air Diffuser locations • Connection to mall FCU point (existing) • Airflow direction • Diffuser labels No duct design required — only diffuser layout. IMPORTANT REQUIREMENTS: • Use provided AutoCAD template and title block • Follow mall submission standard drawing style • Clean, professional, approval-ready drawing • No desig...

I’m putting together a small hobby circuit centred on an operational amplifier and need a clean, single-layer PCB layout to bring it to life. The schematic is already roughed out on paper; what I’m missing is a production-ready board that I can either home-etch or send to a low-cost fab. Here’s what I expect: • A tidy, single-sided layout that keeps traces short and avoids jumpers where possible. • Project files in KiCad - Schematic and PCB Acceptance check: the files should load without DRC errors in the native tool, and a quick 3D view must confirm there are no component overlaps. Once these points are met, I’ll mark the project complete immediately.

1. Project Overview Design and deliver two integrated printed circuit boards forming a robust 12V automotive-style switching and power distribution system rated for 20A per channel max and board total of 50A The system shall provide controlled switching and fused distribution of multiple high-current loads using panel-mounted latching switches and relay-based power switching. The design shall be suitable for production manufacture and reliable operation in automotive or industrial environments. Below attached is full project scope detail DXF file and 3d step model. NO CHANCERS PLEASE!!!!! dont waste my time either if you intend to go above your bid value or time indicated in your bid.