Ηλεκτρονικά Jobs

I need a compact controller board built around the STM32F103CBT6 in the 48-pin LQFP package (or a pin-compatible alternative with the same Cortex-M3 core). The board must expose three independent serial channels: • RS-485 • RS-232 • A UART linked to an on-board serial-to-TCP module that speaks plain TCP/IP Reliability is critical. Please integrate proven over-voltage, short-circuit and over-current protection on all power inputs as well as the three interface blocks. If you are more comfortable substituting a different F1-series part with identical footprints, that’s fine as long as the firmware and pinout remain drop-in compatible. Deliverables • Complete schematic (Altium, KiCad or EasyEDA) • Four/two -layer PCB layout with proper isolation be...

Project Overview: Design and prototype a 446 MHz wireless audio broadcast system for indoor mosque sound in India (using the license-free PMR446 band). 1. Mosque Transmitter Unit: - Audio line-in from Mosque PA amplifier (Ahuja). - MAX9814 AGC leveler/compressor to prevent voice clipping or distortion. - Auto-VOX sound trigger to start transmitting automatically when the Muazzin speaks (zero manual buttons). - SA818S-U UHF module (1W Tx mode) tuned to 446.0562 MHz with 67.0 Hz CTCSS tone. - 50-ohm SMA connector connecting to outdoor Diamond X-50 minaret antenna via 15m RG-213 cable. - 5V DC power supply with surge protection. 2. Home Receiver Speaker Box: - SA818S-U module (Rx mode) tuned to the same 446.0562 MHz + 67.0 Hz CTCSS code. - Hardware squelch/mute control: MUST be 100% dead si...

I’m building a high-speed communication interface on an STM32-based board and need production-ready firmware written in C/C++. The microcontroller is an ARM Cortex-M series device, and the single most important goal is to move packets through the interface as quickly and reliably as possible—latency can be modest as long as overall data throughput remains very high. You will design and code the full communication stack, configure the peripheral clocks, DMA, interrupts, and buffering strategy, then expose a clean API that my application layer can call from RTOS or bare-metal. Low-level register work is fine, but you’re equally welcome to leverage STM32 HAL/LL or CubeMX if that accelerates development; the final code must compile under STM32CubeIDE or GCC-based Makefiles...

We are looking for a skilled and reliable KiCad developer/user for a potential long-term partnership. At the beginning, you will work in a trial/test period. We will give you a small KiCad task to evaluate your skills, work quality, communication, and reliability. Trial task: Use our Rounder for Tracks v3.2 KiCad plugin. Test it on a PCB with angled tracks. Check whether the tracks are rounded correctly. Try different plugin settings. Send screenshots after testing. Provide clear feedback about the results and any issues you find. If we are satisfied with your work, we will hire you for a long-term partnership and provide you with more KiCad-related tasks and projects on an ongoing basis. We are looking for someone who is interested in long-term cooperation, not just a one-time projec...

Project Specification We are a professional cybersecurity firm seeking an experienced black hat hacker to conduct an authorized DNS resilience and stress-testing engagement. Project Objective Assess the ability of our controlled DNS infrastructure to withstand high-volume NXDOMAIN traffic generated from up to 50 authorized test sources and identify weaknesses affecting DNS availability, performance, caching, rate limiting, monitoring, and incident response. Scope of Work The specialist will: * Design an authorized NXDOMAIN resilience-testing methodology. * Configure up to 50 controlled/authorized traffic-generation sources. * Generate progressively increasing NXDOMAIN workloads within agreed limits. * Measure DNS query throughput, latency, packet loss, CPU, memory and network utiliz...

I need a complete IoT gateway hub that brings LTE (4G), Wi-Fi, Bluetooth, Zigbee and sub-GHz RF into a single, reliable unit for remote monitoring and alerting of smart-home devices. The goal is straightforward: gather data from a variety of in-home sensors and actuators, push it to the cloud over cellular when Wi-Fi is unavailable, and relay actionable alerts back to the user in real time. Here is what I expect: • Hardware design that accommodates the five radios with proper coexistence planning, power management and antenna layout. • Embedded firmware that can automatically select the best back-haul (LTE or Wi-Fi), maintain secure connections and expose a clean API or MQTT/HTTP interface for the smart-home layer. Also with bluetooth, zigbee and rf. • Delive...

We are a medical device manufacturer developing the next-generation electronic control box for an existing product. We have received a Statement of Work from an Indian engineering services firm covering PCBA design, firmware development and Engineering Verification Testing, and we want an independent expert opinion on it before we sign. This is a review engagement only — no design work. The device (in summary): mains-connected Class II active medical device. Single integrated 6-layer PCBA with a universal-input mains stage using a certified medical AC/DC module, four isolated AC relay channels, dual isolated 4-wire PT1000 sensing, coolant flow and CT current monitoring, an STM32H7-class MCU with external SDRAM, a 5–7" IPS capacitive touch display running LVGL, an LTE Cat...

I’m looking for an embedded-systems engineer who can take ArduPilot’s AP_Periph codebase and turn it into a robust CAN-bus battery monitor. The unit will sit on a DroneCAN network and stream full MAVLink telemetry, so it can slot straight into my existing ground-station setup without any extra protocol bridges. Integration with other telemetry options such as or SmartPort isn’t needed right now. Key functions I must see on the bus: • High-accuracy individual cell voltage for every cell in the pack (not just pack voltage) • Hall-effect current sensing that stays linear and low-loss all the way to 400 A • Standard AP_Periph health, identification and parameter handling so the flight controller recognises the device instantly Deliverables 1. Schemat...

Our sports venue runs on an ageing electronic scoreboard built around seven-segment LED and P10 LED panels. It still works, but erratically, and it can only be operated from the hard-wired control box bolted under the grandstand. I need the whole system modernised so I can walk onto the field with a phone or tablet and run the show from there. Scope of work • Inspect every board, power rail and driver on the existing hardware, replace any damaged or obsolete parts, and leave the display fully refurbished. • Design and build a new controller unit that adds rock-solid wireless connectivity plus a battery-backup circuit so a brief power loss never blanks the screen. • Write clean firmware for that controller, making sure it can address both the seven-segment digits and t...

I need a specialized plumber's level that indicates pipe flow with precision. The tool should incorporate a digital display to show the pipe's level and angle. Essential Requirements: - Digital display for pipe level and angle - Water-resistant casing - Calibration feature Ideal Skills and Experience: - Experience with digital display integration - Knowledge of waterproof design - Calibration expertise

I need production-ready firmware for a Renesas MCU that will exchange data through a Quectel EC200 cellular module using both IEC 60870-5-104 and plain TCP/IP protocols. The code must handle complete data transmission, reception, and on-board processing so the MCU can act as an intelligent field unit that talks reliably to a SCADA master as well as to standard IP services. Scope • Build or integrate a lightweight IEC104 stack alongside a TCP socket layer that can coexist without blocking. • Manage all EC200 interactions (AT commands, connection setup, keep-alive, error recovery) over UART/SPI as appropriate. • Implement configurable buffers, parsing, and frame validation so that raw sensor payloads can be wrapped/unwrapped for each protocol. • Provide hooks whe...

I need a complete electromechanical and IT-infrastructure design that can be certified as both Tier II and Tier III, with every subsystem clearly documented so the owner may choose the appropriate tier room by room. The scope spans power, cooling, fire protection, low-voltage cabling and network layouts, packaged as coordinated drawings, single-line diagrams, equipment schedules and a narrative that explains how each topology meets its respective uptime requirement. Power architecture must provide true N+1 redundancy—covering utility feeds, generators, UPS strings, switchgear, PDUs and branch distribution—while remaining scalable should we later migrate parts of the floorplate to 2N. Your documentation should reference Uptime Institute criteria, TIA-942, relevant IEC/NFPA code...

I need a skilled engineer to reverse engineer and replicate an alt-azimuth control system used in a astro observation.setup. Key requirements: - Detailed analysis to understand functionality - Precision in creating an exact replica - Experience with mechanical systems and consumer electronics Ideal skills: - Mechanical engineering - Experience with consumer electronic devices - Attention to detail and problem-solving skills Please provide examples of similar work done.

I already have the full mechanical side of a new, cost-effective outdoor vending machine—frame, actuators, motors, sensors, the lot. What’s missing is the electronic heart: a sleek touchscreen interface, a reliable controller, and rock-solid QR-code payment processing. Here’s what I need built and integrated: • A capacitive touchscreen (preferred size 7-10 in) that looks premium outdoors, survives glare and light rain, and gives a smooth, intuitive flow from product selection to checkout. • A central controller (Raspberry Pi, STM32, or a similarly capable board—open to your recommendation) that drives the existing motors and sensors, handles temperature monitoring, door locks, and any future add-ons. • QR-code payment only: the screen should dis...

Experienced KiCad Hardware Engineer – Schematic Capture, DFM-Optimized PCB Layout & Production Package (Turnkey JLCPCB Assembly) Job Description: Honeycomb LLP is seeking an experienced embedded hardware and PCB design engineer to take a product design from initial block diagram/specifications through complete schematic capture, PCB layout, and turnkey assembly package delivery. The board will host an embedded microcontroller ecosystem (e.g., ESP32 / RP2040 / STM32) interfacing with sensors and power management circuits. The final design must be fully optimized for cost-effective manufacturing and assembly via JLCPCB SMT services. Scope of Work & Responsibilities: 1) Schematic Capture: Design modular, production-ready schematics in KiCad (latest stable version) adhering...

I have a finalist for a low-latency software-developer role and want an experienced engineer to run a focused technical assessment. The candidate works daily with C++ and Python and claims deep exposure to network optimization, real-time data processing and high-frequency trading systems, so the interview needs to probe exactly those areas. You would design and host a live, screen-sharing session that dives into lock-free C++ patterns, kernel-bypass networking, profiling tools, latency budgeting, and Python-based data pipelines. I will forward the résumé and any code samples in advance; you prepare the questions, run the interview (Zoom, Meet or similar) and challenge the candidate with practical problem-solving rather than trivia. Deliverables: • 45-60 min techn...

I have a TI-OS graphing calculator on my desk, a bag of parts, and a YouTube tutorial that supposedly turns the device into a pocket-sized ChatGPT terminal. What I need now is an experienced hardware-meets-firmware problem-solver who can transform that theory into a working build. Here is what you will be working with • Device: Graphing calculator running TI-OS • Goal: Load and run ChatGPT locally (or via whatever clever connectivity you propose) • Desired integration level: “Camera” – I chose this because I want to push the project further than simple text replies; ideally the camera add-on will feed images straight to ChatGPT for on-device analysis. If you see a smarter route, feel free to outline it, but the camera element must remain central. Scop...

1) Need to do total re routing 2) need to add esp32 c6 wroom 1 vis uart,spi and i2c 3) add eeprom 4) correct modbus error 5) re naming all I/O

Technical Specification: Inkjet DC Servo Motor Emulation via NEMA Stepper Motor (Closed-Loop Conversion)1. Project ObjectiveTo design and implement an electronic intermediary system (signal translator) to replace the original DC carriage motor of an inkjet printer with a NEMA stepper motor. The system must guarantee ultra-smooth, resonance-free linear motion and high-fidelity real-time positioning feedback to prevent the printer's mainboard from triggering a Carriage Jam or Fatal Error state.2. Block Diagram and Signal Flow ┌──────────────────────────────────────────────────────────┐ │ INKJET PRINTER MAINBOARD │ └───────────────┬──────────────────────────▲───────────────┘ │ │ [Integrated H-Bri...

I need a design prototype for a product that's in the early development stage. Requirements: - Detailed design mockups - Specifications for materials and components - User interface and experience design Ideal Skills and Experience: - Expertise in product design - Strong portfolio in design prototypes

Need small anf compact HDI multilayer pcb from systematic to pcba which can be connected with my existing smartphone pcb . Requirement in custom pcb are - 1) NFC + custom NFC antena 2) Secure element 3) secure MCU 4) type C USB for data 5) vibrator 6) touch buttons 7) pogo pins for charging BOM and all details of my main pcb will be discussed and provided to you

The job centres on a detailed PSS E model of a large-scale photovoltaic plant integrated with a pumped-hydro storage scheme and tied to the Australian National Electricity Market. I already have the basic single-line diagrams and key equipment data; what I need now is a full system study that treats the PV array and the hydro turbines as one coordinated asset. Primary objectives • Build and validate the composite model in PSS E, capturing inverter controls, governor/turbine dynamics, and all relevant protection schemes. • Run a stability suite that zooms in on frequency stability under typical contingency events (generator loss, network faults, large load steps). • Check NER compliance and document any clauses that require design adjustments. • Evaluate power q...

I already have a complete schematic and BOM for an embedded-system board and now need someone to turn it into a production-ready PCB in KiCad. You will receive the schematic, component list, and the exact board outline with mounting-hole locations so the size constraint is fixed from the start. Your task is to place all parts logically for signal integrity and serviceability, route power and ground planes cleanly, add connectors exactly where the enclosure dictates, and run full DRC to be certain the board will pass fabrication checks the first time. Please keep an eye on trace widths, clearances, and manufacturability rules that mainstream fabs expect. When finished, send me: • The complete KiCad project (schematic symbols, footprints, and PCB layout) • Gerber and drill fil...

I’m putting together a small robot that can be driven from a smartphone app so students can see core robotics concepts—actuators, basic kinematics, simple autonomy—in action. The emphasis is on clear demonstration rather than complex research, so I want a clean, reliable build that reacts instantly to on-screen controls. You’ll help me from design through to a working prototype. I’m open on the exact board and language (Arduino-Bluetooth, Raspberry Pi-Wi-Fi, ESP32, etc. all fine) as long as the final unit pairs quickly with an Android or iOS app and lets learners steer, change speed, and trigger at least one additional function (for example, a gripper or light). Because the real goal is teaching principles, I also need the code commented clearly and a short ...

Our company needs the Electrical - Mechanical Engineer!!! >>>To show that you have carefully reviewed this job posting, please check my location (country) and state—at the very beginning of your proposal—the time calculated by subtracting one hour from my local time.>>> (Job Title) Electrical - mechanical Engineer for Medium-Voltage Line Sensor Prototype (Job Description) Important availability and engagement requirements: This is a fixed-price project only - no hourly billing and no upfront payment. Payment will be tied to agreed project milestones/deliverables. We need someone who can commit approximately 60 hours per week, work primarily in the US Pacific Time (PST/PDT) zone, and be available for real-time communication throughout the working day. We a...

**Freelance PLC Programmer Required – Mitsubishi FX5 CPU / GX Works3** We are looking for an **experienced PLC programmer (10–12+ years of hands-on experience)** with strong expertise in **Mitsubishi FX5 series PLCs and GX Works3 programming software**. **Project Background:** We previously supplied a **complete paint shop automation system for a client in South Africa**. One of the spray booths is currently facing an operational issue, and we require an experienced PLC programmer to troubleshoot and rectify the issue remotely. **Issue Description:** The spray booth has two operating cycles: 1. **Spray Cycle** – The fan starts and operates as required. 2. **Cooling Period** – The fan switches OFF as per the sequence. 3. **Bake Cycle** – When the bake cycle...

I need a complete electronics solution that can replace the original EBB board on an Axidraw-style writing machine. The job covers both hardware and software. Hardware scope • Design a compact, two-axis motor-control PCB built around an ESP32. • Integrate two stepper-motor drivers capable of smooth, quiet motion at plotting speeds. • Provide a reliable USB interface for host control and firmware updates. • Include all required power-management, end-stop, and pen-lifter circuitry so the board can drop straight into an existing Axidraw frame. • Deliver production-ready assets: schematic (PDF & source), PCB layout, Gerber/Drill files, BOM with part numbers, and a brief assembly guide. Firmware scope • Develop firmware that exposes Axidraw-compat...

I’m putting together a straightforward location-tracking system for loads of non-perishable goods that move through warehouses, trucks, and rail cars. The core requirement is real-time position updates from departure to storage, with automatic alerts if a device signals potential theft. The hardware can be either single-use—so the receiver never has to return or recharge the tag—or a reusable unit that we can redeploy after each trip. I’ll need your help scoping both variants and producing an estimated cost per device for each. What I expect from you • A concise technical proposal outlining the recommended tracker form factor, network technology (e.g., GSM, LTE-M, NB-IoT, LoRaWAN), and back-end platform or API you plan to leverage. • A table or brie...

I will give you a complete distortion/overdrive guitar-pedal schematic along with a list of the exact parts I want to use. Your job is to recreate that digital circuit in EasyEDA, make sure every symbol and footprint matches the components I provide, and lay out a compact, noise-conscious PCB that can go straight to fabrication. Because this is a digital circuit for an audio pedal, trace placement, ground routing, and jack positioning matter; please keep signal integrity and pedalboard ergonomics in mind while arranging the board. I’m happy with through-hole as long as the parts remain the same ones on my list. Deliverables • EasyEDA project file with the full schematic entered • Optimised PCB layout inside the same project • Generated Gerber/NC drill set ready f...

I need an AI system that can identify computer devices such as PCIE ISA PCI AGP for a pick and place machine. The AI doesn't need to have a high level of precision; an accuracy of less than 80% is acceptable. Skills and experience ideally suited for this job include: - Proficiency in AI and machine learning - Experience with computer vision and image recognition - Knowledge of computer components - Ability to develop a system with basic accuracy level (<80%) - Understanding of pick and place machines/Robotic arms - working with video machine learning - Robotics

ESP32 Sonar Data Streaming to Android Phone – 300–400m Direct Wi-Fi Link, No Repeater I am looking for an experienced embedded/RF developer to build a reliable wireless communication system for a fishing boat sonar. CURRENT SETUP On the boat: - Sonar - Existing sonar driver - ESP32 On shore: - Android phone WHAT I NEED I want the following architecture: DRIVER → ESP32 → Wi-Fi AP + external antenna → 300–400m → Android phone → APK The Android phone must connect DIRECTLY to the boat. STRICT REQUIREMENTS - 350–450 meters real-world range - Direct boat → phone connection - NO repeater - NO router/access point on shore - NO additional radio receiver on shore - NO internet connection required - Android phone must receive the data di...

I need someone physically located near Buckeye, Arizona to pick up a large electronic item I found on Craigslist, pack it with the proper protective materials, and ship it to my address in California. The unit is bulky, so standard packaging won’t be enough; please secure it with adequate cushioning and a sturdy outer box to avoid damage in transit. Here’s what the job looks like: • Coordinate with the Craigslist seller to pay for and collect the item • Provide or purchase the special packaging materials (I’ll reimburse) • Carefully pack and label the shipment • Send it via a reliable carrier with tracking • Share the tracking number and a photo of the boxed item once it’s on its way I’m offering $85 for your time and effort,...

I'm seeking a skilled PCB designer to create a board for mass production that integrates an ESP32 C3 Supermini with an HLK-LD2410C for sensor integration, specifically a presence sensor. Key Requirements: - Design must facilitate sensor integration - Components: ESP32 C3 Supermini and HLK-LD2410C - Must be suitable for mass production Ideal Skills and Experience: - Proficiency in PCB design software - Experience with ESP32 and sensor integration - Background in designing PCBs for mass production

I need a complete high-frequency RF PCB laid out in KiCad for a signal-processing application. The board must integrate antennas directly on the substrate; no filters or discrete amplifiers are planned at this stage, so every trace, via, and ground return has to be optimized for clean, low-loss feed to the antenna structure. Scope • Translate my existing schematic (KiCad format) into a production-ready multilayer layout. • Model and route all RF paths with controlled impedance, proper stack-up definition, and tight clearance to meet high-frequency performance targets. • Design and tune the on-board antenna geometry, matching network, and keep-out regions inside KiCad’s PCB editor and 3D viewer. • Run DRC, ERC, and any KiCad integrated RF simulation tools ...

I have found a gaming PC on Facebook Marketplace that I’d like to purchase, but before any money changes hands I need a reliable set of eyes and hands on site. The unit is located in Ganoa, VIC and must be transported safely to my address in Mernda once it passes an on-site check. Here’s what I need from you: • Confirm the machine is exactly as advertised by inspecting its physical condition (case, ports, fans, no hidden damage) and verifying the main hardware specs on-screen—CPU, GPU, RAM, storage—using simple system-info tools such as Windows Settings, Task Manager, CPU-Z or similar. • Power the PC on, make sure it boots smoothly to the desktop and runs basic apps without crashes; no extended gaming or stress-testing required. • Only release p...

I’m building a mobile robot and need an ESP32-based physical hand-held controller that can drive it wirelessly via Wi-Fi or Bluetooth. The only actions the robot must respond to are Forward, Backward, Rotate Left and Rotate Right—no arm control for now. Here’s what I’m looking for: • Clean, well-commented firmware for both the remote unit and the robot side, written in Arduino IDE or ESP-IDF. • A lightweight, low-latency communication routine that keeps the link alive and automatically reconnects if the signal drops. • Pin mapping and a simple wiring diagram for the buttons, power, and any status LEDs you recommend. • Quick setup notes so I can flash the code and verify that each button triggers the correct motion. I’ll consider t...

We are seeking an experienced PCB designer to create a compact, single-board PCB that integrates the following components: - High-precision GNSS receiver IC (u-blox ZED-F9P) - ESP32-S3 Wi-Fi/Bluetooth microcontroller module - 9-axis IMU (Bosch BNO055) - Buck-boost power management circuit for single-cell Li-Ion battery operation - Input protection circuitry (over-voltage, over-current, reverse polarity) - Dual antenna connectivity (SMA and connectors) The board must be production-ready, reliable in field conditions, and designed per industry standards. Deliverables include schematic, PCB layout files, BOM, and Gerber outputs. The designer can use KiCad or EasyEDA as the design tool. Full schematics, pin allocations, firmware interface details, and application context will be shared post...

I’m looking for an experienced FPGA engineer to create a one-off firmware build for an Artix-7–based LeetDMA/Screamer PCIe DMA card. The goal is to make the card appear on the bus exactly like my reference network interface card so automated heuristic checks see no difference. Scope of work • Re-order and modify the Capability Pointer chain inside so the PCIe config space layout mirrors the donor NIC byte-for-byte. • Implement full TLP transaction handling, including correct completion timing and status codes. • Provide accurate BAR sizing and address decoding as the original NIC does. • Add proper MSI / MSI-X interrupt setup with working vectors and masking logic. Context and constraints This firmware is for security research, not production ...

Job Description We are looking for an experienced hardware/embedded engineer for an upcoming wearable product development project. The product is a compact wrist-worn connected device, and we need someone who has previously taken a wearable or similar battery-powered consumer electronics product from hardware design through prototyping and manufacturing. The device will involve: - Custom PCB / electronics design - Bluetooth Low Energy (BLE) - Microphone + speaker / two-way audio - Low-power embedded firmware - Battery and power optimisation - Wireless charging - Compact wearable enclosure / CAD - Prototype development and testing - DFM and manufacturing handoff The final project will require complete production-ready deliverables including schematics, PCB/Gerber files, BOM, firmware source...

Seeking layout engineer with experience in Altium, low noise analog circuitry, and EMI mitigation. This project encompasses minor updates to an existing board which has already passed EMI testing. There may or may not be a desire to further reduce emissions, but the main focus is signal processing updates.

I’m putting together a simple proof-of-concept: an XY plotter that uses stepper motors and a motor-driven cream / syringe head to write one predefined word on plain paper in four different sizes. The word and the sizes will be hard-coded for now; no live UI or font selection is needed. I just want to see smooth, accurate motion, clean cream extrusion, and clearly legible lettering in an “Elegant” style. Here’s what I need from you: • Mechanical design and parts list for the XY frame, rails, carriage, and syringe mount, all sized for an A4 sheet of paper. • Electronics schematic and firmware (Arduino + GRBL, or any open-source control stack you prefer) that drives two XY stepper motors plus a third actuator for the syringe. • G-code or equivalen...

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 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 am looking for an experienced embedded hardware and audio electronics engineer to replicate a custom automotive audio reverb/DSP module from scratch (0 to 100 delivery). The original circuit uses a Spin Semiconductor SPN1001-FV1 DSP, a Microchip MCP604 quad op-amp, and an external 8-pin EEPROM chip. I need a complete, end-to-end service: hardware reverse engineering, firmware dumping, PCB design, component sourcing, board assembly, and delivery of a fully functional prototype. Scope of Work & Deliverables: 1. EEPROM Firmware Extraction: Extract/dump the binary code from the 8-pin EEPROM chip on the provided reference board to preserve the custom reverb algorithm. 2. Schematic Capture & PCB Design: Recreate the schematic in EDA software (preferably KiCad or Altium) including the...

I have an industrial automation setup that needs to be driven entirely from LabVIEW. The core of the job is to integrate my DAQ devices with custom LabVIEW code so the line can run hands-free and generate reliable data. Here is what I need from you: • Data acquisition & processing – configure the DAQ hardware, create robust VI’s for continuous logging, and implement on-the-fly filtering so the raw signals become clean, time-stamped datasets. • Control system design – build closed-loop control logic inside LabVIEW, complete with PID tuning where required, to keep temperature, pressure, and motor speeds within setpoints. • Equipment calibration & testing – script automated calibration routines for each channel on the DAQ, produce verificatio...

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...