Ingeniería eléctrica Jobs

I need an expert to test and fix circuit components for a radio project. Key tasks include: - Tasting and fixing circuits on both breadboard and PCB - Primarily focusing on transistors and diodes - Diagnosing and resolving short circuits Ideal Skills and Experience: - Proficiency in working with transistors and diodes - Experience with both breadboard and PCB setups - Strong troubleshooting skills for short circuits Looking forward to your bids!

I have a working surface-EMG biofeedback prototype that is almost ready for a clinical trial. My background is in Occupational Therapy, so I need a technically-minded partner to finish the engineering details. The prototype already captures clean EMG signals, but three areas still need work before it enters the clinic: 1. Fixing the vibration sensor • Diagnose the current instability (occasional dropouts and inconsistent amplitude) • Re-calibrate and, if necessary, replace the sensor so it triggers haptic feedback within 50 ms of threshold detection • Deliver updated firmware and wiring diagram 2. Building EMG display software for Windows • Real-time data visualization (raw signal and RMS/average) • Session recording to CSV or similar fo...

I need a skilled team for constructing and equipping 16 salon studios (10x8x10 H). The project involves both construction and electrical work. Key Requirements: - Construct partition walls, install flooring, and build ceilings. - Set up electrical features: lighting fixtures, power outlets, and HVAC systems. Ideal Skills and Experience: - Experience in commercial construction and build-out. - Knowledge of electrical systems and installation. - Ability to manage multiple tasks and meet deadlines. - Attention to detail and quality craftsmanship. Looking for reliable professionals to bring this project to life.

My small home studio has turned into a tangle of power and audio leads running from a mixed-media setup—audio interfaces, a digital piano/monitor, Xbox and MIDI keyboard—all crammed beside my desk. With two curious cats that love to chew anything dangling, I need every single run concealed and protected. I’m leaning toward a purpose-built cable management system rather than opening the walls. All wiring should finish tucked neatly under the desk, routed through trays, raceways or similar hardware that keeps nothing accessible to paws or teeth. Wherever a cord must drop to floor level, please propose a solution that stays flush against furniture or baseboard so it still reads as “wireless” at first glance. Key goals • Map and re-route every existing le...

I’m working on an industrial-scale project and need an experienced electrical design engineer who can do two things equally well: walk me through existing power distribution drawings so I fully grasp every symbol, schedule, and protective device, and then translate that understanding into a complete, detailed design package for the facility. The assignment is limited to the power distribution system. Right now, the priority is a refined, code-compliant set of detailed documents—single-line diagrams, load calculations, cable and busbar sizing, breaker coordination, panel schedules, and any supporting calculations—ready for my client’s review and the authority having jurisdiction. We’ll collaborate remotely through screen-sharing sessions while you annotate th...

Must be a qualified Electrical Engineer with at least 5 years experience. I’m building a single house in Thailand, roughly between 400 sqm, and I want a clear, construction-ready three-phase electrical plan that aligns with local PEA requirements and the Thai Electrical Code (TIS). The load will be standard household appliances—nothing unusually heavy—but I still expect balanced phase distribution, proper demand calculations, and protection coordination. Here’s what I must receive: • Single-line diagram with complete load schedule and phase balancing • Detailed wiring layout in AutoCAD (DWG) and PDF, showing conduit runs, breaker sizes, earthing, and main board location • Calculation sheet covering demand factor, voltage drop, and fault current ...

I need a local technician near North Bay, Ontario, who already works comfortably with the Siemens SiPART DR24 controller to verify every field-to-board and board-to-board connection and every component on one unit that is giving intermittent faults. The focus is on connection and component testing rather than functional or algorithm checks; I want confirmation that every terminal, ribbon, plug, and socket is carrying the right signal with no unexpected resistance, shorts, or breaks, and that every component is functioning as it should. Please arrive with your own calibrated scopes, continuity meters, breakout adapters, or any other diagnostic tools you normally rely on for this class of industrial controller. Once on site you will trace and test each connection, document the readings in a...

I need a business-grade projector purpose-built for classrooms that lets teachers and students interact directly with the projected image. The core requirement is an integrated interactive touch-screen capability—think smooth, low-latency annotation right on the board—paired with the brightness and reliability expected from a presentation unit. Here’s what I’m after: • Hardware: a projection engine bright enough for well-lit rooms, plus the touch-enabled overlay or sensor array that will register multiple fingers or a stylus without calibration headaches. • Software: driver package or embedded firmware so the touch layer appears as a standard HID device to Windows, macOS, and ChromeOS. Annotation tools or whiteboard software hooks are a bonus. •...

I’m building a compact digital clock timer that uses a six-digit seven-segment display, runs from a rechargeable Li-Po cell, and tops up through a USB-C port with on-board charging circuitry. The firmware needs to cover three operating modes: a standard alarm clock, a configurable countdown timer, and a Pomodoro-style work cycle. Here’s what I need from you: • Complete schematic with microcontroller selection, Li-Po charge/​protection IC, buzzer driver, speaker, and all support components. • PCB layout optimized for low power and minimal footprint while keeping the USB-C routing compliant. • BOM • Production-ready Gerbers, drill files, and pick-and-place data. • Simple bootloader or ISP header so I can reflash firmware easily. (is it possib...

I already hold a 34-drawing AutoCAD 2022 package for an internal fit-out scheme and now need every sheet elevated to full RIBA Stage 4 compliance for tender / construction issue. Scope of the update The existing set covers plans, elevations and basic layouts; it now requires technical depth across: • Architectural details – full dimensions, tolerances, fire-stopping notes, door & ironmongery schedules, mezzanine interfaces, etc. • Interior design elements – finishes, joinery details, reflected ceiling plans and any bespoke furniture integration. • Mechanical & electrical services – coordinated HVAC, lighting, small power, data and containment routes, all layered and annotated clearly. Key points • AutoCAD 2022 must be the native...

Hi, We have an active requirement from a buyer who is looking to acquire production-grade Automotive / Vehicle software codebases. We are specifically looking for: • Automotive / Vehicle domain projects • ECU / Firmware development • Telematics / Connected Vehicle solutions • Immobilizer / Vehicle Security / Protection systems • Vehicle Control systems • ADAS (Advanced Driver Assistance Systems) • Vehicle Diagnostics • Other software developed for or around automotive/vehicle systems **Technology:** Primarily C, C++, or Rust **Important:** The requirement is for **real production-grade codebases**, not prototypes, demos, POCs, or academic projects. The vendor/developer must have the **legal ownership/IP rights or the necessary rights to sell/tr...

Ik zoek iemand die voor een commerciële elektrische installatie een volledig ééndraadschema opstelt volgens NEN 1010. Wat ik aanlever • Een voorbeeldschema ter referentie • Ruwe lijst met alle groepen en verbruikers Wat jij oplevert • Een duidelijk, professioneel schema in AutoCAD (of vergelijkbaar CAD-pakket) • Alle circuitgroepen overzichtelijk benoemd • Aarding en aardlekschakelaars exact gepositioneerd • Specificaties van apparaten en belastingen per groep vermeld Belangrijk – Het schema moet strikt voldoen aan de NEN 1010-richtlijnen. – Bestandsformaten: dwg én een leesbare PDF. – Heldere layer-structuur en benamingen zodat collega-installateurs het makkelijk kunnen aanpassen. Heb j...

I’m looking for an experienced MCC electrical engineer to prepare fully detailed control-panel layouts for a new motor control center I’m building. The scope is strictly design and drafting, so no field installation or troubleshooting is involved. The drawings must be produced to recognised industry benchmarks—UL508A and IEC 61439—and be ready for direct hand-off to our fabricator. I’m happy for you to work in AutoCAD Electrical, EPLAN, or a comparable CAD platform as long as the native files and PDFs are delivered. Deliverables • Scaled control-panel layout drawings, showing component placement, wireway, and clearances • All supporting schematic pages referenced by the layouts • Bill of materials tagged to each drawing • Final ...

I keep losing power in the living room and bedrooms whenever the same breaker flips, and the issue has become more frequent over the past week. I need someone who can come onsite, trace the wiring on that residential circuit, pinpoint whatever is causing the repeated trips, and confirm the safest long-term fix. Your job is to isolate the fault, explain what’s happening in plain language, and either correct it on the spot or give me a clear written plan—parts, labour and estimated time—so I can approve repairs immediately. A professional toolkit (multimeter, continuity tester, insulation resistance meter) and solid familiarity with domestic wiring regulations are essential. Deliverables: • On-site diagnostic of the affected circuit • Brief report outlin...

I’m ready to commission the complete electronic design for a 150-300 W pure-sine-wave solar inverter that will run from a 12.8 V / 100 Ah LiFePO4 pack and deliver 220 VAC. The unit must operate reliably indoors and outdoors, fit comfortably within a 10 × 20 cm footprint, and meet commercial-grade durability standards. Core electrical requirements • True sine-wave topology with ≥90 % efficiency under typical load • Clean 220 VAC output, THD ≤3 % at 150 W, full-power capability to 300 W • Input 12 VDC nominal, LiFePO4 profile charging via high-frequency PWM • Integrated SoC display or LEDs for real-time battery percentage and charge status Protection & safety Over-temperature shutdown, overload limiting, and fast-acting short-circuit prot...

We are a team of Electrical Power Engineering students looking for an experienced engineer or academic expert to help us identify and evaluate a strong graduation project idea. We are mainly interested in projects related to: Power Systems, Protection, Power Quality, Distribution Systems, Motor Drives, Fault Detection, Automation, Grid Reliability, and Smart Power Systems. The project should: * Solve a real and relevant electrical power problem * Include a practical physical prototype * Include a meaningful simulation using tools such as ETAP, MATLAB/Simulink, PSCAD, or similar * Be feasible for a student team within approximately 4–6 months * Have reasonable hardware cost * Be technically strong and suitable for a final-year graduation project * Preferably improve an existing sol...

We are looking for an experienced RF PCB Layout Engineer to review and complete an existing multi-radio PCB design. This is not a design-from-scratch project. The schematic, component placement and most signal/power routing are already completed. The remaining work is focused mainly on RF layout finalization and production-readiness review. Required experience: Sub-GHz / LoRa RF PCB routing LTE RF layout GNSS RF layout 50-ohm controlled-impedance routing RF matching networks antenna feed layout ground return and stitching-via strategy RF keep-outs and isolation multilayer PCB stack-up EMI/EMC-aware layout KiCad The selected engineer will be required to review the existing PCB, complete/correct the RF sections and bring the board to fabrication-ready status. Expected deliverables incl...

We are looking for an experienced Automotive Electronics / PCB Design Engineer to modify and extend an existing vehicle tracking hardware design into an OBD-II telematics device. The project will include two variants: Modern vehicles – OBD-II with CAN communication. Older vehicles – OBD-II with CAN + K-Line support. We prefer a common hardware platform where possible, with different BOM/configuration options for the two variants. The engineer must have proven experience with OBD-II, CAN Bus, K-Line, automotive power supply/protection, PCB schematic design, and vehicle telematics hardware. Initial deliverables will include the updated schematic, BOM, component selection/alternatives, interface design, automotive protection circuitry, and design documentation. IMPORTANT: Th...

I have an NXP 595-based concept that has to fit into an 18 mm footprint and be reproduced on twelve identical boards. The boards are for development and testing, yet I need production-grade documentation so I can send the files straight to fabrication and assembly without extra rework. Core requirements • High-integration layout that combines power management, signal processing and data communication on the same tiny PCB • Clean, EMI-conscious routing to keep signals reliable despite the tight real estate • All design files delivered in a mainstream ECAD package (Altium Designer, KiCad or similar) along with manufacturing outputs Deliverables 1. Complete schematic with component libraries 2. PCB layout and 3D step model in the agreed tool 3. Gerber and drill fi...

I need a small 33 x 29 mm membrane touch latching switch printed circuit board (PCB) with only 8 SMDs on it, copied for a obsolete device. I'm looking to get 100 of these made, possibly 200 depending on pricing. I can send the 6 component list and photos of the circuit board and a complete circuit board is this 2 sided. The active devices are a ATMEL TINY 13A (needs programming and a PA1CD (i think it's a zener diode, 4 resistors and 1 capacitor. On the decal side there is a small led that lights when latched. It needs to be copied exactly because this switch circuit gets glued into a recess in a plastic case with cutouts for the components so the board lays flat. I may not need the switch decal. Run on a 3.7VDC battery. Key Requirements: - Exact replication of the existing PCB...

I have a consumer-electronics project that is almost ready for production, but I need a fresh set of expert eyes before I commit to tooling. Your job is to scrutinise every level of the design and give me a concise, actionable report. Scope of the review • Schematic – confirm AC isolation, creepage distances, relay selection and power-supply safety. • PCB layout – check placement, clearances, return paths and routing discipline. • BOM – verify component availability, footprints, part compatibility and RoHS compliance. • Firmware – validate logic for sensors, alarms, GSM SMS/call handling, relay control and fail-safe behaviour. • Safety & compliance – highlight anything that could jeopardise CE (LVD/EMC) readiness and fla...

We are looking for skilled and reliable Field Service Technicians across the United States to support on-site repair and maintenance tasks for electromechanical equipment. This project is ideal for technicians who enjoy hands-on troubleshooting, working with hardware components, and following structured repair procedures. You will receive repair instructions and remote support while completing component replacements and repairs at customer locations. What You’ll Do * Perform on-site repairs and component replacements on electromechanical equipment * Diagnose issues and troubleshoot hardware problems using provided video-based SOPs and remote guidance * Disassemble and reassemble equipment safely and efficiently * Replace modular components such as: * Pumps * Servo mot...

I already have complete architectural floor plans for a private villa. What I still need are fully coordinated Mechanical, Electrical, and Plumbing drawings that I can hand straight to the local authorities and the contractor without further revisions. Scope of work • Reflected ceiling plans that show both the HVAC distribution and all lighting points. • Electrical layouts covering GPOs, power circuits, distribution boards, access points, lift supply, and all rooftop equipment. • Plumbing layouts for every wet area, including vertical stacks, the rooftop kitchen, and the pool plant. • Life-safety layouts—detectors, exit signs, and call points—fully integrated with the electrical set. • Rooftop services drawings for solar panels, inverter, ded...

I’m looking for a skilled mechatronics specialist who can jump straight into the electrical and software-programming sides of my machine-building project. The mechanical portion is already under control in-house, so your focus will be integrating, testing, and refining the control electronics and embedded code that drive the system. You should be comfortable reading and updating wiring schematics, selecting or replacing critical components, and writing clean, well-documented firmware or PLC logic that keeps everything running reliably. If you can also implement quick diagnostic routines and safety interlocks, even better. Scope at a glance • Review existing electrical design, spot weak points, propose improvements • Develop or optimise the control software (C/C++, Pyt...

I'm looking for a skilled developer to write C++ code for an ESP32-based drone equipped with an MPU6050 sensor. The code should handle both flight control and sensor data processing, using Wi-Fi as the communication protocol. Key Requirements: - C++ programming expertise - Experience with ESP32 and MPU6050 - Knowledge in drone flight control algorithms - Proficiency in sensor data processing - Wi-Fi communication protocol implementation Ideal Skills: - Background in robotics or drone development - Familiarity with relevant libraries and frameworks - Strong problem-solving skills - Ability to provide well-documented and maintainable code - It also has flysky transmitter and ibus receiver Please share any relevant experience in your bids.

I’m leading a senior-year project where my student team will build and test an induction-motor drive (motor, VFD, sensors, protection, filters, the works). What we’re missing is seasoned electrical-engineering insight during the DESIGN phase. Here’s what I’d like from you: • Review and refine our single-line and wiring diagrams, ensuring safe operation on a 3-phase, 480 V supply. • Help size and specify the motor, VFD, fuses/MCB, contactors, braking resistor, EMI/RFI filters, current/voltage sensors, and any surge- or overload-protection devices. • Validate thermal calculations, harmonic considerations and grounding/shielding practices. • Provide a concise Bill of Materials with part numbers and vendor suggestions, flagging long-lead or co...

I have a consumer-electronics concept ready for the next step and need a clean, production-ready double-layer PCB layout. The board will host a mix of through-hole and surface-mount parts, so component placement and routing must accommodate both styles without ballooning the footprint. Deliverables: • Finished design files in Altium and industry-standard Gerbers • Drill files, pick-and-place data, and a tidy BOM (Excel or CSV) • Test PCB's with assembly I will review the Gerbers in ViewMate and run a quick fit-check in our enclosure CAD; the project is complete once the files import cleanly and the report answers all open questions. Looking for someone in India, Delhi NCR Region. Thanks

I need an experienced Allen Bradley programmer to spend a few days on-site at a production facility in the Emirates. The installed PLC platform is ControlLogix, and the goal is simple: get the line running smoothly again by finding and clearing the underlying faults. You will connect with your own laptop loaded with Studio 5000 / RSLogix 5000, RSLinx, and the usual Allen Bradley diagnostics utilities, trace the error path, implement a solid fix, and document exactly what was changed so my maintenance crew can follow up later. A quick hand-over session with the local technician at the end of each day keeps everyone aligned. Daily rate is 68 USD; travel and accommodation are handled separately. If you have a track record of fast, methodical troubleshooting on ControlLogix platforms and can...

We are a team of Electrical Power Engineering students working on our senior graduation project. We need an experienced Electrical Power Engineer to provide technical guidance and engineering support for designing, simulating, and building a physical prototype. The project focuses on detecting power-quality disturbances (Voltage Unbalance and Harmonics) affecting a three-phase induction motor, diagnosing the disturbance, and applying automatic corrective actions in a closed-loop system. Key areas include: 1. Hardware Prototype Development: Guidance on architecture, component selection, electrical design, sensing/isolation, protection, wiring, testing, and troubleshooting for components like three-phase induction motors, VFDs, ESP32-based data acquisition systems, harmonic filters, capaci...

I need a compact firmware-and-hardware solution that lets a PIC microcontroller, programmed with the XC8 compiler, manage a battery-powered power supply built around a lead-acid pack. Here is what I am after: the PIC should start up from the battery, regulate or switch the output rails as required, continuously read the pack voltage, temperature or any other basic health indicators, and trigger clear actions (for example, low-voltage cutoff or status signalling) before the battery reaches critical limits. A simple serial, I²C or even LED indicator scheme is fine for status feedback—as long as I can read the key parameters easily during bench tests. Please base the code on MPLAB X + XC8 so I can compile and tweak it locally. If you prefer a specific mid-range PIC that is re...

I already have a universal BLDC ceiling-fan driver PCB running perfectly from mains power; what it lacks is an Arduino brain. My goal is to plug an Arduino (Uno, Nano, or whichever you prefer) into the existing driver so I can: • adjust fan speed across its full range, • reverse the direction on command, and • set on/off timers, all through a small set of physical push-buttons mounted near the fan. What I need from you is a clean, well-commented sketch plus a minimal wiring diagram that shows exactly where every button, resistor, and logic-level signal ties into the driver board. If any level-shifting, opto-isolation, or triac/FET gating is required, please spell that out and include the component values. Debounced button handling and non-blocking timer logic (e.g., u...

I’m building a proof-of-concept noise-reduction module destined for consumer-grade electronics. My priority is an electronic schematic that delivers two core capabilities: active noise cancellation and echo reduction. The circuit must be small enough to embed in another typical product that will be mentioned later on as the project develops. Here’s the flow I have in mind. First, we collaborate on the signal-processing topology—feed-forward, feedback, or hybrid—then translate it into a detailed schematic and PCB layout (Altium, KiCad, or your preferred EDA). Once the draft design is ready, I’ll need simulations or bench measurements that prove at least 20 dB attenuation in the 50 Hz–2 kHz band while holding latency under 10 ms; please include SPICE plot...

I’m assembling a training corpus for a math-focused large-language model and need a calculus specialist to enrich selected research papers with clear, accurate explanations of every sophisticated step. You’ll read each PDF, insert concise LaTeX-formatted comments that unravel dense derivations, and flag any ambiguous notation so the model grasps the intended meaning. Deliverables • Annotated PDF (or .TEX) with inline clarifications • Companion JSON that maps each comment to its passage and supplies a one-sentence paraphrase Acceptance criteria • All non-trivial calculus moves are explained in ≤3 sentences, free of factual error • Original math notation preserved; added text compiles in LaTeX • File names and JSON keys match the template I...

My final-year electrical engineering project is well underway, but I want the written report to reflect the same level of professionalism as the technical work behind it. I will handle all calculations, simulations, and data; what I need is an experienced engineer—or a writer who routinely prepares professional engineering documents—to help me shape that material into a clear, cohesive LaTeX manuscript. I have 2 separate reports to write. The topic of the first is programming and security-related. The second report is analogue circuit-based. As I said i will do all the technical work; I just need help putting these documents together. The submission for these reports is at the beginning of November and should be roughly 30 pages long. Scope of collaboration • Co-writi...

I need a Simulink model that lets me design and test a full state-space control system in both continuous-time and discrete-time forms. The goal is to compare the two implementations side by side inside the same project so I can evaluate performance, stability margins, and implementation effort before moving to hardware. I will provide the plant dynamics and desired performance indices as soon as we start. From there, I’d like you to: • Build the continuous-time state-space controller in Simulink, organised with clear subsystems for A, B, C, D matrices and any pre-compensators or observers you feel are appropriate. • Create the matching discrete-time version (sample time will be specified) and place it in a parallel branch of the model for direct simulation comparison. ...

I need a lighting-product specialist to translate my chandelier concept into a full set of manufacturing-ready 2D working drawings. The package must let my fabricator move straight into production, so every sheet has to spell out precise dimensions, complete material specifications and clear electrical-wiring information. You’ll be dealing with decorative, multi-tier pieces similar in style and complexity to fixtures produced by Klove and Emane, so prior experience with either brand—or another high-end bespoke lighting studio—is a major plus. I’m comfortable reviewing files in AutoCAD or an equivalent CAD platform; final deliverables should arrive in both editable DWG and print-ready PDF formats. Deliverables 1. Scaled general arrangement drawing showing plan, ele...

I have a run of modular cabinets to put through the shop and need a clean, production-ready cut list built around the way we work. All boxes are being fabricated from 18 mm plywood, processed on our panel saw, laminated in the cold press, edged on a single-sided edgebander, then drilled on a two-head multi-boring machine. You will take the cabinet dimensions I provide and translate them into a fully optimised sheet yield, complete with part names, finished sizes, grain direction, edging indications, and drilling references so every station knows exactly what to do next. Optimisation should target standard 2440 × 1220 mm boards and minimise off-cuts. Deliverables • Excel (or CSV) cut list with quantities, sizes, edging sides, and drill notes • Nesting layout/PDF for t...

I need an experienced data cabling engineer to install new cables in an office building with 4-7 floors. SC clearance is required for this job. Key Requirements: - Installation of new data cables - Work to be done in an office building - Experience with multi-floor installations (4-7 floors) - SC clearance is mandatory Ideal Skills and Experience: - Proven expertise in data cabling installation - Familiarity with office building layouts and requirements - Ability to work efficiently across multiple floors - Valid SC clearance Please ensure you have the necessary certifications and experience before bidding. Looking forward to your proposals!

I’m wrapping up the hardware side of a 3.5 kW single-phase on-grid inverter I’m building for my own use and now need well-structured C firmware to bring it to life. The goal is solid, standards-minded code that will: • keep the inverter phase-locked to the utility grid (grid synchronization), • sample and report key electrical parameters in real time (power monitoring), and • trigger a fast, orderly shutdown whenever limits are exceeded or the grid disappears (safety shutdown). I will share the full microcontroller pin-map, schematic details, and any manufacturer SDKs I already have. You’re free to work with bare-metal C or leverage vendor libraries as long as the final build remains portable and easy for me to maintain. Clear comments, interrupt-...

Industrial 220V Power Supply & Machine ON/OFF Control PCB Design I am looking for an experienced Power Electronics / PCB Design Engineer to design a compact industrial power supply and control circuit that will work with our existing IoT device. Main Requirements - Input: 220–240V AC industrial supply - Provide stable DC power to our existing IoT device - IoT device will provide the control signal for Machine ON/OFF - Circuit must safely switch/control the industrial machine using an appropriate relay/contactor/SSR or other suitable solution - The machine load current will pass through or be controlled by the designed switching section - Proper isolation between high-voltage AC and low-voltage IoT electronics - Include necessary protection: fuse, surge protection, over-current...

I need a detailed design for a 600 amp electrical service for a residential building. The primary use will be general household needs, with high-power cooktops as the only significant appliance. Key Requirements: - Design should accommodate 600 amps for a residential building - Primary use is general household consumption - High-power cooktops to be included in the design Ideal Skills and Experience: - Electrical engineering background - Experience in residential service design - Knowledge of high-amperage systems and safety protocols - Ability to provide detailed schematics and load calculations Please include any relevant certifications and past project examples in your bids. must be certified in new mexico

Looking for Freelance Railway Electrical Engineer Seeking an experienced Railway Electrical Engineer for a freelance project assignment focusing on railway electrification (OHE). Role: Freelance Railway Electrical Engineer Scope: Site execution, OHE alignment review, and technical coordination for railway projects Requirement: Hands-on experience with Indian Railways / RE electrification standards Share your profile or drop a message to discuss the project scope and terms.

I would recommend COMSOL Multiphysics with the AC/DC Module as the first-choice simulation environment. The reason is that this design is not a conventional motor. It depends heavily on nonlinear magnetic saturation, permanent-magnet flux redirection, very small air gaps, changing reluctance, rotor position, pulsed coils, and torque versus angle. COMSOL’s Rotating Machinery, Magnetic interface can model permanent magnets, nonlinear B-H curves, rotating domains, transient excitation, torque, induced voltage and losses in one coupled model. Its own permanent-magnet motor examples calculate torque over rotor position/time rather than estimating it from peak magnetic force. I need a skilled analyst to run an electromagnetic FEA study of my “Tab-and-Stab” electric motor...

I need a Simulink model that lets me design and test a full state-space control system in both continuous-time and discrete-time forms. The goal is to compare the two implementations side by side inside the same project so I can evaluate performance, stability margins, and implementation effort before moving to hardware. I will provide the plant dynamics and desired performance indices as soon as we start. From there, I’d like you to: • Build the continuous-time state-space controller in Simulink, organised with clear subsystems for A, B, C, D matrices and any pre-compensators or observers you feel are appropriate. • Create the matching discrete-time version (sample time will be specified) and place it in a parallel branch of the model for direct simulation comparison. ...

I need a mechanical engineer who can guide me in choosing a fixed-ratio gearbox for an industrial machine now in the design phase. The gearbox will not be manual, automatic, or CVT; I specifically want a robust fixed gearbox that can meet three critical criteria: high load capacity, a defined speed range that matches our motor curve, and long-term durability in a 24/7 production environment. Your task is to analyse the duty cycle, calculate the required service factor, and translate those figures into an exact gearbox size and model recommendation. Please include: • All design calculations and assumptions • A shortlist of commercially available gearboxes that satisfy the numbers, with supplier links and lead times • A brief comparison explaining why the recommended uni...

I have an Arduino-based setup that drives DC motors and I need clean, well-commented code that handles speed control, direction changes, and automated stopping. The sketch can be written from scratch or built on what I already have; either way, I want the final file to compile error-free in the current Arduino IDE and be easy for me to tweak later. Here’s the core logic I’m after: • Speed control – PWM or another reliable method that lets me adjust RPM smoothly from zero to full throttle. • Direction control – forward/reverse switching triggered by a digital input or a serial command. • Automated stopping – when a limit switch, sensor, or timed event is triggered the motor should brake or coast to a halt, then wait for the next command. I...

I’m designing a slow-turning drum and need an experienced engineer to specify both the AC motor and the reduction gearbox that will drive it. The drum must rotate steadily at 6 RPM and the load calls for less than 100 Nm of torque on the output shaft. Space is limited, so overall package size and mounting arrangement have to be considered alongside efficiency and durability. What I need from you is a clear, calculation-backed recommendation: the appropriate gear ratio, motor power, frame size, and any duty-cycle or thermal considerations that might affect service life. Please base the sizing on readily available industrial components—ideally IEC-frame or NEMA equivalents—so I can source them quickly. Deliverables • A brief sizing report showing assumptions, torqu...

Looking for Help With Senior Software Engineer Job Interviews I’m looking for someone who has some experience with software engineering job interviews in the US market and can help me prepare for Senior Software Engineer interviews. You do not need to be a professional interviewer or have many years of experience. I mainly need someone who is familiar with the interview process and can practice with me. What I Need Help With Practice common software engineering interview questions Do mock interviews with me Practice behavioral and technical questions Help me improve how I explain my experience and projects Give feedback on my answers Practice system design or coding questions when needed Help me become more comfortable and confident during interviews What I’m Looking For Som...

PROJEKTAUSSCHREIBUNG (FREELANCE) Erdungs- und Blitzschutzplanung für ein 110-kV-Umspannwerk in Deutschland Gesucht: Elektroingenieur:in (Freelance) für die Auslegung der Erdungsanlage und des äußeren Blitzschutzes eines neuen 110/20-kV-Umspannwerks in Deutschland. Einsatzort: 100 % remote, alle Unterlagen liegen digital vor Start: kurzfristig Bearbeitungszeit: ca. 3 Wochen bis Entwurf, danach eine Korrekturschleife Vergütung: Festpreis (bitte mit Aufwandsschätzung in Tagen) AUFGABE Für das Umspannwerk liegen Entwurfszeichnungen (Erdungsplan, Blitzschutzplan, Leerrohrplan als PDF + DWG) sowie alle Eingangsdaten (Kurzschlussdaten des Netzbetreibers, Trafo-Datenblatt, Lageplan, Gebäudepläne, Bodengutachten) vor. Ein Referenz-Auslegungsbericht ...

I need a complete set of EPLAN schematics that map out the electrical drivetrain of my vehicle prototype. The focus is strictly on the electric motor and its controller; auxiliary items such as battery packs, charging modules, or transmission layouts are outside this job’s scope for now. You are free to work without binding standards, so feel comfortable applying your own best-practice symbols, macros, and page templates in EPLAN Electric P8. What matters most is clarity, consistent device tagging, and tidy routing so my in-house engineers can drop your file straight into the broader vehicle project. Deliverables • Native EPLAN project file (.elk / .zw1) with all pages clearly labeled • PDF export for quick review • Simple parts list (motor, controller, core co...