Circuit design jobs

I need a comprehensive electrical design for an assisted living apartment block, covering common areas, individual apartments, and outdoor areas. The design should ensure safety and compliance while also being efficient. Key Requirements: - Cable calculations with detailed circuit diagrams - Load calculations and design for all specified areas - Compliance with relevant safety and building regulations - Experience in designing for residential and assisted living facilities Ideal Skills: - Electrical engineering background - Proficiency in CAD software for accurate drawings - Strong knowledge of safety standards and energy efficiency Please include your portfolio and relevant experience in your bids.

...variable holding force up to 40 N, adjustable via a simple in-line control such as PWM, current-limit circuit, or potentiometer. • Remain within the specified footprint and include straightforward mounting points so I can drop them straight into my assembly. • Operate continuously without excessive heat build-up or noticeable magnetic drift. Deliverables • 3 fully wound and assembled electromagnets built to the agreed dimensions • Matching driver or control interface with wiring diagram and basic operating instructions • Short test report showing measured pull force at minimum, mid-range, and maximum settings • Source files (coil data, CAD, circuit schematic) so I can reproduce or modify the design in future I’m flexible o...

I am looking for a freelancer to create a professional, visually-driven technical presentation based on a single research paper (will be provided). Read and fully understand the research paper ,Convert the entire paper into a structured presentation format. professional, visually-driven technical presentation that prioritizes high-end graphics. Use custom-designed circuit diagrams and system architectures instead of bullet points, and employ clear flowcharts to break down complex processes step-by-step. All numerical data and complex tables must be converted into vibrant, modern charts that highlight key trends and statistical markers. The presentation must follow a logical sequence from the technical problem to the methodology, results, and a sophisticated critical evaluati...

...I am. I expect clean, well-commented C++ firmware, a neat PCB layout that is ready for fabrication, and a companion app built with Blynk IoT or a comparable framework. Android and iOS support are both welcome; feel free to recommend the most efficient route. Because I plan to scale beyond a prototype, component selection, power-safe routing, and OTA update capability are important. Clear circuit diagrams and a short hand-over video will help me replicate or service the hardware later. Post-delivery support for minor tweaks is appreciated so the system stays reliable once installed in my Nashik home. Deliverables • Working hardware prototype tested on an ESP32 development board • Complete source code (firmware and mobile app) with setup instructions •...

I’m launching the NorCal Premier Circuit, a series of elite youth flag-football tournaments in the San Francisco Bay Area, and I need a full logo suite to match its professional feel. The job is to create six related logos: • one master mark for “NorCal Premier Circuit”, and • five event marks for “Bay Area Kickoff”, “Golden Gate Classic”, “Silicon Valley Showdown”, “Redwood Classic”, and “NorCal Flag Open”. All six should share a consistent visual language so they read as one family, yet each event logo must carry its own name and, where it makes sense, a nod to the local landmark or regional flavor (Golden Gate, Silicon Valley tech vibe, redwoods, etc.). Creative direction –...

...new units and the internal wiring cleaned up so everything meets current NZ electrical standards. Here’s what I’m after: • Remove the existing MCB, timer, relay and socket • Fit the replacement components I supply (or, if you can source equivalent rated parts, let me know) • Re-terminate and dress the wiring so it’s neat, labelled and compliant with AS/NZS 3000 • Function-test the circuit, confirm correct timer operation and relay actuation, then issue the usual Certificate of Compliance The board is easily accessible during business hours, parking is available, and mains isolation is straightforward. I’ll have the factory powered down for you while the work is carried out, but I’d like everything energised and sig...

I’m refreshing the visual identity of Skylife Technologies Ltd. and need a standout logo that feels modern and elegant while instantly communicating innovation—the core message I want every viewer to pick up. Please steer clear of literal clouds or obvious circuit-board motifs; I’m after something more original that still hints at forward-thinking tech. Colour-wise I’m open: classic blue-and-white, sleek black-and-gold, or even green-and-silver could all work if they support the concept, so feel free to experiment and justify your palette choice. Typeface selection, icon style, and overall composition should all lean toward clean sophistication rather than flashy gimmicks. To keep the process smooth, I’d like to see a few concept directions first,...

I have a set of hand-sketched electrical layouts that need to be rebuilt in AutoCAD. The sheets cover full power distribution, lighting, low-voltage, and panel schedules for a commercial project, so they go well beyond simple circuit tracing. Accuracy is critical: every conductor, device symbol, layer name, and annotation must match standard electrical drafting practice so the files can drop straight into our consultant package without re-work. Here is what I will provide right away: • PDFs of the marked-up sketches (scaled, with reference dimensions) • A legend of the symbols I use and any project-specific notes • Title-block template and layer naming convention And this is what I expect back: • A separate .dwg file for each sheet, laid out at 1:1 model ...

...and dense, making the analysis of individual circuits particularly challenging. ________________________________________ 2. Mission Objectives Phase 1 – Circuit Decomposition by Fuse The primary objective is to: • Identify every fuse present in the fuse box • Isolate all electrical components associated with each fuse • Produce a dedicated layer per fuse Each layer must contain: • The relevant fuse • The complete associated circuit (wiring, components, grounds, power supplies, etc.) • All connections required for a self-contained understanding of the circuit Phase 1 Deliverables: • One PDF file per fuse, containing only the corresponding circuit • strongly preferred: o Modified Zuken source file o Clear layer org...

I’m putting together a new set of industrial control panels /Automation panels with HMI, PLC, Drives etc., Single phase Thyristor & 3 phase Inverter power panels and need a complete schematic package that I can hand straight to fabrication and installation. The drawings must show every circuit breaker, control relay, and motor starter etc in context, then tie them together with clear point-to-point wiring information, a clean component layout, plus the machine wiring harness and its routing between panel and field devices. Here’s what I expect: • Wiring diagram that details every conductor, wire number, and termination • Scaled component/layout drawing including HMI, PLC, Drives so the shop can drill, punch, and label accurately • Harness routing...

I’m building a compact, two-layer PCB in Altium Designer for the back-light circuit of a bus. The schematic is roughly sketched, component choices are clear, and now I need an experienced board designer to turn the concept into a production-ready layout that can survive the automotive environment (vibration, temperature swings, noise). The job covers refining the schematic where needed, arranging the components for optimal thermal flow and EMC performance, routing the board within the mechanical outline I will supply, and running all Altium DRC checks until the file is clean. Once we are happy with the layout, I also want standard fabrication outputs so I can send the job straight to the board house. Deliverables • Altium project (schematic & PCB files) • G...

I’m launching the NorCal Premier Circuit, a series of elite youth flag-football tournaments in the San Francisco Bay Area, and I need a full logo suite to match its professional feel. The job is to create six related logos: • one master mark for “NorCal Premier Circuit”, and • five event marks for “Bay Area Kickoff”, “Golden Gate Classic”, “Silicon Valley Showdown”, “Redwood Classic”, and “NorCal Flag Open”. All six should share a consistent visual language so they read as one family, yet each event logo must carry its own name and, where it makes sense, a nod to the local landmark or regional flavor (Golden Gate, Silicon Valley tech vibe, redwoods, etc.). Creative direction –...

...Roblox experience. In this first slice I need everything that makes a racing prototype feel polished and fun right away, built in Roblox Studio with clean, documented Lua so we can expand later without re-writing core systems. Deliverables for this milestone • One fully-tuned “Voiture de course” (single racing car model) with smooth, responsive handling and believable physics • One simple “Circuit de course” map sized for short laps, including start/finish triggers, basic scenery and checkpoints • Lightweight in-game UI: car dashboard (speed, gear, health/fuel if relevant), track mini-map, and a live leaderboard that updates each lap The goal is a plug-and-play template: press Play, drive, complete laps, see your position, and fe...

I need a simple two-sided through-hole mounted board for Data communications over an 120V buss bar. All we need is the board pictured, copied. We need the Cad layout file so we can have boards made as the current ones are i...two-sided through-hole mounted board for Data communications over an 120V buss bar. All we need is the board pictured, copied. We need the Cad layout file so we can have boards made as the current ones are in bad condition due to having worked on them numerous times in the past 30+ years. No circuit design is required. Requirements: - High voltage handling (above 48V) - Components: capacitors, resistors, diodes, transformer, 2 DIP chips, RS232 connector Ideal Skills: - PCB design experience - High voltage circuit knowledge - Proficiency i...

...must USB-IF compliance is a must Dynamic power sharing CE and FCC EMC compliance is a must according EN 55032/5 Effeciency: EU CoC Tier2 Tast transient responce is a must Regulation 5% @ max load Reinforeced isolation Safty compliance according IEC 62368-1 is a must Environment: working temprature >80 C Board size:30x35mm Deliverables : Full Schematic Design using Cadence or Altium only Full PCB design : Using Cadence or Altium only Circuit simulation using PSpice or LT spice Full mathematical modeling, including transfer functiobs and compensation Thermal Analysis DFM analysis DFA analysis DFR analysis, including aging and production life cycle for all components Gerber files BOM XY DATA Assembly data Fabrication notes Mechanical analysis EMC analysis All comp...

...of the project. 2. INTRODUCTION TO EMBEDDED SYSTEMS: (Specific to PLC-based systems). 3. BLOCK DIAGRAM: Showing the system architecture. 4. HARDWARE REQUIREMENTS: List of all parts needed. 5. CONTROLLER SPECIFICATIONS: Details about the Delta PLC used. 6. COMPONENT SPECIFICATIONS: Datasheets for sensors (Moisture, Temp, etc.) and actuators. 7. SOFTWARE REQUIREMENTS: (WPLSoft, ISPSoft, etc.). 8. CIRCUIT DIAGRAM: Clear wiring/schematic diagram. 9. CODING: The actual Ladder Logic file (.dvp) with comments explaining each rung. 10. HARDWARE TESTING: Description of how the system is tested. 11. PPT OF COMPONENTS: A professional PowerPoint presentation for the project. 12. SOFTWARE SIMULATION: A high-quality Full HD video (3-5 mins) showing the code running on the simulator with text e...

...of the project. 2. INTRODUCTION TO EMBEDDED SYSTEMS: (Specific to PLC-based systems). 3. BLOCK DIAGRAM: Showing the system architecture. 4. HARDWARE REQUIREMENTS: List of all parts needed. 5. CONTROLLER SPECIFICATIONS: Details about the Delta PLC used. 6. COMPONENT SPECIFICATIONS: Datasheets for sensors (Moisture, Temp, etc.) and actuators. 7. SOFTWARE REQUIREMENTS: (WPLSoft, ISPSoft, etc.). 8. CIRCUIT DIAGRAM: Clear wiring/schematic diagram. 9. CODING: The actual Ladder Logic file (.dvp) with comments explaining each rung. 10. HARDWARE TESTING: Description of how the system is tested. 11. PPT OF COMPONENTS: A professional PowerPoint presentation for the project. 12. SOFTWARE SIMULATION: A high-quality Full HD video (3-5 mins) showing the code running on the simulator with text e...

...need a modern, memorable logo that feels as polished as Stripe yet remains unmistakably our own. Here’s the creative direction: • A letter-based icon paired with the wordmark “Wemelo.” • Serif typography that reads clean and timeless in both large and very small sizes (favicon, app icon). • Minimal, geometric styling—no trendy gimmicks and absolutely no AI clichés such as brains, robots, or circuit lines. • Primary color is a deep black #1b1c1b on a light background; simplicity and contrast are key. Deliverables: 1. Horizontal lock-up (icon + wordmark). 2. Square/icon-only version. 3. Vector originals (AI/SVG) plus PNGs for immediate use. The logo should echo the clarity and high-end feel of brands like Stripe while ...

EasyEda project V1 is fully working and tested, V2 is just a super draft sketch to check PCB size and case and plastic case fitting CAN schematic to intgrate via UART ( I don't have PDF) already tested in another project ...UART ( I don't have PDF) already tested in another project RS485 dirver again to be intgrated via UART and already tested in another project what is missing is the pinout of the Dyneawat alarms / LED on the RJ45 connector just trying to get this info this is the panel to integrate on the ESP32 GPIO, 4 led and one switch... will do reverse eng and make a schmatic You have all the info V1 circuit + CAN trasceiver + RS485 trasceiver + GPIO original panel integration Schematic 90% done BoM done You need to put all together and make final schem...

...overall design is modular, configurable, and suitable for robust industrial deployment with expandable I/O and reliable power architecture. Here’s a tight, professional Scope of Work paragraph you can directly use: ⸻ The scope of work includes complete design and development of the embedded hardware system starting with system architecture definition, component selection, and preparation of an initial schematic based on the proposed block diagram. The freelancer will develop a zero-board (proof-of-concept prototype) to validate functionality, including signal behavior, interface compatibility, and system stability, and provide a preliminary BOM and validation report with findings and recommendations. Upon successful validation and approval, the work will proceed t...

Project Description I’m looking for an experienced electronics or instrumentation engineer to design and build a small calibration coil system that generates a known magnetic field for laboratory measurements. The device will be used to calibrate a sensor that detects short, weak magnetic pulses (~1 ms, ~10 nT), so it needs to support time-varying fields up to about 1 kHz. Requirements Build a circular coil or Helmholtz coil (5–10 cm size) Use non-magnetic materials Include a simple drive circuit (MOSFET or similar) Include a precision current measurement (sense resistor + output) Provide outputs for monitoring the current waveform Ensure it works with short pulses (~1 ms) Deliverables Fully assembled working device Basic wiring schematic Documentation of coil ...

...first-person feature from an experienced flight instructor reflecting honestly on the most common errors students make in the circuit — and the specific teaching moments that actually fixed them. This is not a how-to manual and not a syllabus recap. It is a story, told by someone who has sat in the right seat long enough to have seen everything. Warm, direct, occasionally funny. The reader should finish it feeling like they just had coffee with someone worth listening to. **Word Count:** 800–1,000 words **Source:** This must be a commissioned piece from an active CFI or senior FI with verifiable hours. Writer draws from personal experience. Supplement references with DGCA CPL circuit standards from the training syllabus for any technical benchmarks cited. --...

Design a complete electronic schematic for our smart orthotic insole device based on the given system requirements. The circuit will include multiple FSR sensors (Force Sensitive Resistors) for plantar pressure sensing and an IMU sensor for gait/motion tracking. Select and integrate suitable supporting components such as microcontroller, BLE communication module, power management circuit, battery charging unit, connectors, and signal conditioning circuits. Ensure proper sensor interfacing, analog signal acquisition, filtering, and calibration provisions in the schematic design. After schematic approval, develop a compact, optimized PCB layout suitable for wearable insole integration with size and flexibility constraints in mind. PCB must be designed for low powe...

...actively balance the cells and speak Mavlink over CAN so the flight controller sees accurate live data. Core functions • Real-time battery monitoring with voltage, current and temperature reporting for every cell and for the full pack • Automatic cell-to-cell balancing to maximise capacity and cycle life • Safety layer that disconnects or limits power on over-charge, over-discharge or short-circuit events • Mavlink-over-CAN telemetry, using the standard ArduCopter battery status messages so Mission Planner and QGroundControl display everything without custom plugins What I expect as deliverables 1. Schematic, PCB layout files (KiCad or Altium) and a BoM with readily sourced parts 2. Embedded code (C/C++ or STM32Cube / Arduino framework are fine) ...

...wall of my single-family home. The service line has enough slack, but I will need a properly sized exterior-rated panel, weatherproof fittings, and code-compliant grounding/bonding once the move is complete. While you are here, two more electrical updates are needed in the kitchen: • Install new code-compliant, dedicated receptacles for the refrigerator and electric stove (each on its own circuit, GFCI or AFCI as required by the latest NEC). • Replace a failed light switch that controls the main kitchen ceiling fixture. Please handle permitting, coordinate utility shut-off if required, and provide a clean inspection-ready finish (labelled circuits, tidy conduit runs, patching of the old panel cut-out inside). I am available this week to walk you through the...

Have a working circuit diagram for a device based on the ESP32-WROOM-32E module. The system is powered from an external supply (5V / 8V / 12V). The next step is to convert this schematic into a complete, production-ready, single-sided PCB design using Altium Designer. Scope of Work The objective is to develop a fully functional and manufacturable PCB design that meets the following requirements: Convert the provided circuit diagram into a clean, well-structured schematic in Altium Designer Design an optimised single-layer/double-layer PCB layout Ensure the PCB strictly follows the fixed board outline dimensions (to be provided) Implement clear silkscreen labelling for all components and connectors Optimise component placement and routing for reliabili...

OVERVIEW -------- I need a KiCad PCB designer to take a fully verified analogue circuit design and implement it correctly in KiCad, producing production-ready gerbers for JLCPCB. The circuit design is complete — this is a layout and EDA implementation job, not a design-from-scratch job. The board is a 6-cell LTO battery active balancer, 20A per channel, entirely analogue (no microcontroller). I need 4 identical boards to cover a 24S 15P Yinlong 66160 45Ah home battery pack. I plan to order 50 boards after a 5-board prototype run. BOARD SPECIFICATIONS -------------------- Board size: 250 x 120 mm Layers: 6 (JLCPCB stackup JLC06161H-3313) Outer copper: 2oz (L1 and L6 ) Inner copper: 0.5oz (L2 through L5) Surface fini...

I need a custom-shaped, single-layer printed circuit board produced quickly so I can test the mechanical fit and basic electrical routing for a new product I am developing. The overall board must stay as thin as practical; once we speak I will confirm exact thickness and any stack-up limits from my enclosure, but the goal is to minimise profile without sacrificing manufacturability. Here is what I will supply once we start: • A rough outline drawing and simple netlist showing the required connections • Components and preferred connector locations What I expect from you: • Review of my outline and placement to flag any manufacturability concerns • At least three fabricated prototypes shipped to me for bench testing Please use whichever professional tool...

I’m looking for a specialist who can take my concept for a blast-freezer cold room and turn it into a fully engineered design package. The project is strictly design-focused—no installation or maintenance at this stage—and I want every decision to be backed by precise cooling-load calculations so the system runs at peak efficiency from day one. You’ll be sizing and specifying the entire refrigeration circuit, including compressors, evaporators, piping, controls, insulation, and airflow management. I also need layout drawings that show equipment placement, service clearances, and door locations, along with any notes that will help an installer understand the design intent. Please ground the work in current industry standards and typi...

...first-person feature from an experienced flight instructor reflecting honestly on the most common errors students make in the circuit — and the specific teaching moments that actually fixed them. This is not a how-to manual and not a syllabus recap. It is a story, told by someone who has sat in the right seat long enough to have seen everything. Warm, direct, occasionally funny. The reader should finish it feeling like they just had coffee with someone worth listening to. **Word Count:** 800–1,000 words **Source:** This must be a commissioned piece from an active CFI or senior FI with verifiable hours. Writer draws from personal experience. Supplement references with DGCA CPL circuit standards from the training syllabus for any technical benchmarks cited. --...

...need a production-ready printed circuit board for a compact consumer-electronics tracker. The board has to combine Bluetooth connectivity for smartphone pairing, GNSS positioning for global location data, a LoRa module for long-range updates, and a 3-axis motion sensor to wake the unit only when it moves. Everything will run from a single rechargeable battery, so careful power budgeting and a low-power microcontroller are essential. Form-factor will be small enough to slip into a key-tag style enclosure, so component height and antenna placement must be considered from the start. I’m flexible on the exact silicon—Nordic, Espressif, STM, Semtech, etc.—as long as you can justify part choice against current draw, cost and global availability. Please take the d...

...courtside speaker. When the button is pressed, the system updates the score and announces it audibly. Current Stage: Prototype development. The goal is to design a functional, low-cost, and manufacturable electronic system that can later be scaled to production. System Components: 1. Wearable Button Unit * Small, lightweight device clipped to the player's shirt * Single push button input * Bluetooth Low Energy (BLE) communication * Rechargeable battery (Li-Po) * USB charging circuit * RGB LED status indicator: * Green: Device ON * Flashing Red: Charging * Green (steady): Fully charged * Low-cost design is important 2. Speaker Unit * Receives signals from the button via Bluetooth * Plays pre-recorded audio announc...

I’m refining a set of custom boards that combine an FPGA-based signal generator with several ESP32 modules. The immediate gap is in analog and digital circuit design: I need a fresh set of eyes to review, debug, and improve the front-end and conditioning stages so our multi-channel waveforms stay clean from kHz up into the low-MHz range. You will also find yourself touching the programmable logic; I use both VHDL and Verilog, so fluency in either (or ideally both) is welcome when tweaks to the signal-generation core are required. On the microcontroller side each ESP32 handles data processing, manages communication protocols, and drives attached peripherals, all written in C/C++. Expect to dive into that firmware whenever hardware changes ripple upward. Key objecti...

...ready-to-build circuit diagram that closes the voltage feedback loop on the DC bus of an off-grid inverter running in the 12 V – 24 V range. The diagram must show how a suitable voltage sensor feeds a microcontroller so the firmware can keep the bus voltage within safe limits and trigger protective actions when it strays. Please size all resistive dividers, isolation devices (if required), and any signal-conditioning stages so the microcontroller’s ADC receives a clean, scalable signal. What I expect from you • Complete schematic, preferably drawn in KiCad or Altium, showing the microcontroller, voltage sensor path, power supply rails, and any filtering or isolation you recommend. • Short bill of materials with part numbers that are actually availa...

I need a production-ready circuit and compact PCB built around the ESP32-C6 for an IoT device that must run efficiently on both a small solar panel and a rechargeable battery pack. Wi-Fi connectivity is mandatory, and every part of the design has to prioritise ultra-low power consumption so the unit can sit in deep-sleep most of the day yet still wake to trigger a miniature solenoid valve on command. Power architecture The board should accept solar input (≈5-6 V) and seamlessly switch to a lithium cell when sunlight is unavailable. Please integrate an MPPT-style charge controller, battery protection, and a low-loss power-path so the ESP32-C6 always sees a stable 3 V3 rail. Current draw during sleep should stay well under 30 µA. Control section • ESP32-C...

My Texas Instruments LM5170EVM-BIDIR board refuses to deliv...LED ON No output / incorrect output Bias supply confirmed (10V at J17) Fault pin behavior checked Suspected: Controller in shutdown / MOSFET issue Need: Hardware-level debugging support TI datasheet understanding Possibly schematic-level troubleshooting By the end of the engagement I expect: • A clear root-cause explanation for the “no output voltage” symptom in buck mode • A repeatable fix (circuit tweak, BOM change, or layout note) that I can implement and verify on my own bench • Confirmation through measured results that the buck rail is regulating correctly under load If you’ve debugged the LM5170—or similar multi-phase buck/boost controllers—your insight will save m...

...SolidWorks) – Freelance Work (India Preferred) --- We are hiring. We are OMM Enterprises, a machine manufacturing company working on paper plate machines, roti making machines, and automation equipment. We are looking for a freelancer who can help with simple pneumatic and machine design work. --- Work Details: - Basic pneumatic circuit design - Selection of cylinders, valves, and fittings - Simple AutoCAD or SolidWorks drawings - Support in improving existing machine designs This is practical work, not complex design work. --- Who Can Apply: - Mechanical engineers - Diploma or ITI candidates - AutoCAD or SolidWorks designers - Freshers with basic knowledge - Anyone with experience in machine-related projects If you have worked on any machin...

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

...monitor positions automatically. • AI layer – train and deploy a lightweight model that identifies micro-moves suited to scalping (seconds to a few minutes). Reinforcement learning or an LSTM-based approach is fine as long as it stays computationally efficient and can retrain on fresh data without downtime. • Risk management – dynamic position sizing, per-trade stop-loss, max daily drawdown, and circuit-breaker logic. • Back-testing & paper trading – one click to switch between historical simulation, paper mode, and live deployment. • Dashboard – concise web or desktop UI that shows P/L, open orders, latency stats, and model health in real time. • Documentation – setup guide, annotated source code, sample config...

I have a completed audiophile phono-preamp in ExpressPCB+ — schematic and two-layer board — that I now need recreated in Fusion 360 Electronics. The circuit holds 33 unique parts (about 120 total) and follows a simple structure: one power-supply section repeated six times and two identical audio channels. Because of this repetition, copy-and-paste inside Fusion should accelerate the job. All manufacturer part numbers are ready to drop straight into the new library, so you will not have to hunt for footprints or symbols. Trace widths and clearances can remain at Fusion’s defaults; no additional design-rule tuning is required. We will also keep the layer count exactly the same as in the ExpressPCB+ file. Mechanical constraints are critical: • Overall b...

...air and recognise simple OOK (On-Off Keying) pulses reliably. The intended application is “Radio Frequency RF”, so there is no higher-level protocol to worry about; raw, clean carrier switching will do the job. Everything will be mounted and operated outdoors, so the design must tolerate ambient temperature swings, sunlight and occasional moisture without detuning or loss of sensitivity. Both TX and Rx are separate not transceiver and battery powered with minimum 2 days running time. What I am looking for • Circuit-level design of both the low-power transmitter and the super-regen/ super-het (designer’s choice) receiver, including complete schematics, PCB layouts and a concise Bill of Materials with part numbers that are actually in stock. ...

I am looking for a skilled electronics/PCB design freelancer for an industrial IoT device. This is not just a simple PCB layout job. The work includes schematic review, correction, engineering optimization, ESP32 module update, and complete PCB layout in EasyEDA for a compact and reliable product intended for long-term industrial use. Scope of Work: Review and correct the existing schematic Update the ESP32 model/module where needed and improve the design accordingly Optimize the circuit for power stability, EMI/noise immunity, grounding, filtering, and reliability Design a full 2-layer PCB layout from scratch in EasyEDA Use LCSC-preferred components where practical Improve the design for industrial stability and 3+ years reliable operation Key Technical ...

...engineer who knows ETAP inside-out to build and run a full fault-current model of my power system. The single-line diagram is ready; what’s missing is a cleanly-configured ETAP file that captures all protective devices, conductor data, and transformer parameters so I can see worst-case fault duties before equipment is ordered. The task centres on: • Setting up (or sanity-checking) the short-circuit module, clearing any data inconsistencies, and choosing the correct ANSI / IEC calculation options. • Delivering a concise PDF and the native .etap file that lets me trace each bus, breaker, and transformer contribution. I’ll provide the drawings, manufacturer sheets, and any utility data you need. Please highlight any data gaps early, walk me through the mo...

Routing of Printed Circuit Board Routing of Printed Circuit Board

I have a newly b...installer (.exe or .msi) for Windows, then places each build behind the private portal. • Simple web dashboard or file share where only authenticated admins can grab the latest version, see release notes, and (optionally) roll back. • Deployment documentation that lets me repeat the process or hand it to another engineer without guesswork. If you have hands-on experience setting up similar closed-circuit distributions, especially with CI/CD tools like GitHub Actions, GitLab CI, Jenkins, or Azure DevOps, briefly outline that work when you reply. Security credentials—code signing, server hardening, penetration testing—are a big plus. That’s it: a secure, admin-only delivery system for our cross-platform desktop software, fully docum...

...engineer who knows ETAP inside-out to build and run a full fault-current model of my power system. The single-line diagram is ready; what’s missing is a cleanly-configured ETAP file that captures all protective devices, conductor data, and transformer parameters so I can see worst-case fault duties before equipment is ordered. The task centres on: • Setting up (or sanity-checking) the short-circuit module, clearing any data inconsistencies, and choosing the correct ANSI / IEC calculation options. • Delivering a concise PDF and the native .etap file that lets me trace each bus, breaker, and transformer contribution. I’ll provide the drawings, manufacturer sheets, and any utility data you need. Please highlight any data gaps early, walk me through the mo...

...engineer who knows ETAP inside-out to build and run a full fault-current model of my power system. The single-line diagram is ready; what’s missing is a cleanly-configured ETAP file that captures all protective devices, conductor data, and transformer parameters so I can see worst-case fault duties before equipment is ordered. The task centres on: • Setting up (or sanity-checking) the short-circuit module, clearing any data inconsistencies, and choosing the correct ANSI / IEC calculation options. • Delivering a concise PDF and the native .etap file that lets me trace each bus, breaker, and transformer contribution. I’ll provide the drawings, manufacturer sheets, and any utility data you need. Please highlight any data gaps early, walk me through the mo...

I need a compact circuit board designed to function like a pond ionizer, primarily to control algae growth. Requirements: - Input: 24V AC or DC - Output: 12V DC at approximately 0.1A to copper probes - Indicator: Green LED to light up when probes are submerged, completing the circuit Ideal Skills and Experience: - Experience in circuit design and PCB layout - Familiarity with low voltage power supplies - Knowledge of water submersion and environmental resilience (high humidity, etc.) - Proficiency in soldering and working with electronic components

...the IEEE 13-bus feeder with a PV source and completed a full protection-coordination study, yet the short-circuit module is returning unrealistic fault current values. Because those values feed directly into my relay settings, the time-current curves no longer prove CTI compliance, and the entire coordination becomes suspect. What I need urgently is a focused review of the fault-current simulation results themselves. Please examine the ETAP file and trace all assumptions affecting short-circuit levels, including source impedance, transformer impedance, line data, grounding, PV inverter contribution, breaker ratings, and any relevant study or calculation options. Then rerun the short-circuit study and identify the reason for the unrealistic values. If any parameters...

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