Elektronikk Jobs

I’m experiencing suspicious radio-frequency activity that appears to shadow me from place to place. To put the matter to rest—and, if warranted, take legal action—I need a qualified RF engineer to carry out a comprehensive signal analysis, identify any illicit transmitters, and compile hard evidence. Scope of work • Perform an on-site and near-site sweep that covers my home and the immediate surroundings, with attention to possible satellite-related links. • Use professional-grade spectrum analysers, SDR setups, near-field probes, and direction-finding gear to hunt for audio bugs, covert video cameras, and GPS trackers—each is a genuine concern. • Log every anomaly, capture signal characteristics (frequency, modulation, duty cycle, power level,...

A dedicated PCB will drive a self-service car-wash “vendo” unit built around an Arduino Nano. The board must accept the pulse output from a standard electronic coin slot, translate each valid coin into the required runtime, and use that signal to energise five independent relays that handle pumps, valves, or lights. All relays share a common 12 V source, yet the Nano and logic lines stay safely at 5 V, so on-board regulation (12 V → 5 V buck or linear, as you judge appropriate) is part of the layout. The relays themselves need fly-back protection, status LEDs, screw-terminal or JST headers for easy field wiring, and clear silkscreen labelling. A USB-B or tag-connect footprint for in-circuit programming is also required. Deliverables • Complete schematic (KiCad...

I'm looking for an experienced PLC programmer to work on SPM (Special Purpose Machine) manufacturing. The ideal candidate should be proficient in Mitsubishi PLCs. Key tasks include: - Programming PLC logic - HMI development - System troubleshooting Ideal Skills: - Expertise in Mitsubishi PLC programming - Strong background in HMI development - Proven troubleshooting skills Please provide examples of similar work done and relevant certifications.

I need a compact, production-ready circuit board that acts as the main control system for a self-service car-wash vending unit. Its first responsibility is to handle payment processing—accepting coins, bills, and potentially a simple cashless module—then trigger the wash cycle once payment is validated. You will translate this into a complete hardware package: schematic, multilayer PCB layout, and a cleanly organised BOM with readily available components. I will provide the pin-out for the existing coin validator and the relay map for the wash equipment; you make sure the board routes power safely, isolates high-current lines, and exposes clean connectors for future add-ons such as water-flow control and a small customer display. Because the installation sits in a damp ou...

I’m wrapping up a grid-tied photovoltaic project and need a seasoned solar designer to finish the electrical side cleanly. The panels are already chosen, the mounting points fixed, and I have a preferred list of brands for modules, inverter, optimisers, disconnects and the solar-assisted water-heater interface. What’s missing is a complete, permit-ready electrical package and clear guidance on how every device ties together. Here’s the work in plain terms: • Design the final stringing plan, conductor sizing, over-current protection, rapid-shutdown path and grounding in full compliance with the latest NEC/local code. • Produce DWG drawings that show single-line, three-line and physical layout—including the hand-off to my existing distribution board and ...

I have an all-analog circuit that I now need translated into a clean, production-ready hardware package. The job is two-fold: first, capture the complete schematic; second, turn that schematic into a compact, battery-powered PCB layout that is ready for fabrication. Because every stage is strictly analog, component placement, trace routing, and grounding must be treated with the usual care to keep noise and drift to a minimum. The board will run solely from a battery supply, so please incorporate thoughtful power-rail filtering, low-quiescent-current regulators where helpful, and clear test points for current-consumption checks. I’m comfortable with KiCad, Altium Designer, or Eagle—use whichever you prefer, as long as the final files are fully editable. Deliverables • E...

I need single-sided, double-sided, and full multi-layer PCB layouts created for mixed-signal work. The boards combine analog and digital circuitry and will be used across embedded control, RF, and other high-speed applications, so careful impedance control, differential-pair routing, and solid mixed-signal grounding are essential. Altium Designer is my main environment, yet I can seamlessly integrate files produced in Proteus, KiCAD, Eagle CAD, EasyEDA, or even Multisim, so feel free to use whichever of those platforms fits your workflow best. What I expect from you: • Complete schematic capture and net-validation • Fully routed PCB layout that passes DRC and is ready for fabrication • Gerber (or ODB++) files, drill data, and a clean BOM suitable for procurement ...

I need an expert to design the cooling system for an Electric Vehicle Supply (EVS) motor. The cooling system is critical for maintaining optimal operating temperatures and ensuring the motor's performance and longevity. Key Requirements: - Design an air cooling system for the motor - Collaborate with me to ensure the cooling system integrates seamlessly with the overall motor design Ideal Skills and Experience: - Experience in designing cooling systems for electric motors - Strong understanding of thermodynamics and heat transfer - Proficiency in motor design, specifically in the context of EV applications - Ability to create detailed design documents and schematics Please provide relevant portfolio and experience in your bids.

Estoy desarrollando un proyecto personal y necesito el diseño de un PCB que me sirva como prototipo de prueba. El circuito debe combinar dos requisitos clave: alta durabilidad y bajo costo en la fabricación. Conexión wemos d1 r2 + módulo rfid lora + módulo r200 uhf rfid + solar charger 18650 Qué espero recibir • Esquema eléctrico completo. • Diseño del PCB listo para producción (archivos Gerber, lista de taladros y diagramas de montaje). Lineamientos técnicos • Pistas y separaciones acorde a buenas prácticas de fiabilidad. • Selección de materiales y acabados pensados para soportar uso repetido en un entorno de laboratorio personal. • Número de capas optimizado par...

I need a Pre-Amp with volume, bass, and treble controls designed for professional audio equipment. Additionally, I require a 2-way and 3-way Active Cross-Over that is variable, paired with a high-power Class D Power Amplifier capable of delivering between 100W to 500W. The setup should be suited for professional audio applications. Key Requirements: - Features: Pre-Amp with Volume, Bass, Treble, and Variable Active Cross-Over (2-way and 3-way) - Inputs supported: XLR and RCA - Power Output: 100W to 500W Class D Power Amp Preference: - Engineers located in India Ideal Skills and Experience: - Expertise in designing Pre-Amplifiers and Class D Power Amplifiers - Experience with Active Cross-Overs (both 2-way and 3-way) - Knowledge of professional audio equipment design and integration - Pr...

I am looking for an experienced PLC programmer to do on a small CODESYS 3.5 automation project. The task involves creating a simple sequential control process using sensors, motor control, a loading gate, and a 10-second timer.

Target Specifications Application High Voltage Electric Scroll Compressor for EV Thermal Management Motor Type Interior Permanent Magnet Synchronous Motor (IPMSM) Radial Flux Architecture Supply Voltage => 400–800 V DC Compatible up to 900 V DC Output Power => Continuous: 8–18 kW Operating Speed Rated Speed => 3,500–4,000 RPM Maximum Speed => 7,000 RPM Cooling => Refrigerant or Liquid Cooled Duty => Continuous Automotive Operation Preferred Software Experience with one or more of: ANSYS Maxwell Motor-CAD JMAG FluxMotor Infolytica MagNet

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I have a complete written pinout for a small board built around an ESP32-WROOM module, I have the circuit assembled with bare wires and I now need that schematic made in cad as a two-layer PCB in KiCad. The board will have two LDO regulators, a TP4055 Li-ion charger, an STI3408B buck converter and a 24-pin FPC connector for a camera, and assorted passive components. The more compact the pcb the better. You will receive: • the pin-by-pin connection list and a sample kicad assembly with the components all on it. What I expect back: • the complete KiCad project (schematic, PCB, libraries) • production-ready Gerber/NC drill files

I need a purpose-built Electronic Speed Controller for my electric glider that runs on 3-6 cell Li-Po packs (8.4 V – 11.1 V). The unit must deliver: • Responsive throttle control for a brushless motor • Integrated battery management with safe low-voltage cut-off and, if practical, basic current limiting • A reliable brake function to stop a folding prop cleanly in flight Compact size, light weight and maximum efficiency are important, as the airframe has limited space and every gram counts. Here is what I would like from you: 1. Schematic, PCB layout and BOM (KiCad, Altium or similar) 2. Firmware source code with clear parameter tables (C / STM32, ATMEL AVR or comparable MCU) 3. Simple desktop configuration tool or clear CLI instructions so I can adjust ti...

need 200 Drawings of Semiconductor Engineering and Manufacturing engineering open to pay but drawings should not be AI or Google generated....i will try some sample 5 drawings and if they are passed then i will take the rest. Per Drawing i will pay $5. i am looking for Engineering drawings from Specialized domains : 1. Semiconductor Engineering 2. Manufacturing Engineering 3. Utilities and Power Systems 4. Robotics & Automation

I need a clean, well-documented I2C driver written in C for my STM32 board. The driver must operate in both master and slave modes while staying strictly within the 100 kHz Standard-mode specification. Full read and write transactions are required in each role, including proper start/stop sequencing, ACK/NACK handling, and error recovery for bus faults or time-outs. My current firmware is built with STM32CubeIDE, so the new module should compile there without warnings and slot neatly into the existing HAL-based project structure (pure LL implementations are also acceptable if you explain the integration steps). Deliverables • Source and header files with clear, line-level comments • An initialization routine that lets me choose master or slave at runtime • Blocking...

I'm looking to hire a freelancer to develop a buyback program for used and broken smartphones. The brands of interest are Apple, Samsung, Google, Techno, Vivo, Oppo, and Realme. Key Responsibilities: - Develop a comprehensive buyback strategy. - Assess the condition and value of used and broken smartphones. - Create a marketing plan to attract sellers. - Manage the logistics of collection and payment. Ideal Skills and Experience: - Experience in electronics valuation. - Strong marketing and negotiation skills. - Knowledge of smartphone brands and market trends. - Ability to manage logistics and operations.

We need an industrial controller board designed from scratch and delivered as a demonstrated, working prototype. The board mounts inside a vending machine and is powered from the machine's bus. It communicates over two independent industrial serial interfaces — one toward the vending machine controller, the other toward the money-collection equipment — and reports to an external service over the network. It also carries serial and USB ports for peripherals. Scope of work Turnkey, from requirements to a working prototype: Schematic and PCB, in fully editable source files Complete BOM with manufacturer part numbers and costs at volume Fabrication package 3–5 assembled prototypes, demonstrated functional Bring-up report with real measurements Design and integration d...

I’m rolling out a series of AC charging stations for electric vehicles and I need a senior-level, industrial electrical engineer to steer the design and layout work—especially the power-distribution side of things. Your practical plant-floor experience is critical because these chargers will tie into existing industrial infrastructure rather than typical commercial service panels. Here’s what I’m looking for you to tackle: • Produce and/or refine single-line and layout drawings that show transformer sizing, feeder runs, grounding and protection schemes. • Run load calculations and voltage-drop studies (ETAP, SKM, or a comparable tool is fine) so each site can be signed off by utility inspectors without redesign loops. • Recommend switchgear, bre...

I need clean, reliable firmware that will sit on my existing RTU hardware, pull live sensor readings, and publish them to my cloud broker over MQTT. The focus is squarely on accurate data collection from the attached sensors and timely transmission upstream; no local heavy processing is required right now. You will work directly in the device’s embedded environment, set up the drivers for the connected sensors, handle the sampling schedule, form properly structured MQTT messages, and make sure every reading reaches the server even in spotty-network conditions (re-connect logic, message queuing, QoS handling, etc.). I am happy to provide the current hardware schematic, sensor datasheets, and access to a test broker the moment we start. I expect well-commented source code, a conc...

I'm looking for an experienced PCB designer to create a control board for my standby generator. The PCB should manage an Automatic Transfer Switch (ATS) and engine control, and should include: SPARXX ATS REV A – PCB DESIGN SPECIFICATION Project Design a production-ready PCB-based Automatic Transfer Switch (ATS) controller to replace an existing relay/timer panel while maintaining the same operating logic. Deliverables Required Complete KiCad 9 project Schematics PCB Layout BOM Gerber files Pick and Place files Programming header Source files PCB Size Approximately 3.5" × 7" × 0.5" maximum Reserve approximately 20% of board space for future expansion. Power Inputs: 120 VAC 12 VDC Generator Supply Board must automatically power from either sour...

I'm looking for a skilled engineer to design and develop a GPS receiver primarily for navigation transmit and receive the signal over rf antenna Key Requirements: - The GPS receiver should provide accurate and reliable navigation data. - It must be designed to integrate seamlessly - The design should prioritize user-friendly interface and experience. Ideal Skills and Experience: - Proven experience in GPS technology development. - Strong background in hardware design and software integration. - Ability to create detailed, technical project proposals. Please include detailed project proposals in your application.

I need a specialist who can take one of our existing pieces of industrial machinery and retrofit it so it draws significantly less power while keeping—or ideally improving—its current output. The core objective is clear: increase overall efficiency by cutting energy consumption. Your task starts with a thorough assessment of the present drive systems, motors, control panels, sensors, and power-management components. From there we will agree on the most practical upgrade route, whether that means installing high-efficiency motors and variable-frequency drives, redesigning control logic with PLCs, or incorporating real-time energy-monitoring hardware and software. Key deliverables • Diagnostic report outlining baseline energy use, points of loss, and recommended retr...

I already have a partially-working prototype for an industrial counter + timer built around an Arduino. It needs to count production units while tracking elapsed time in parallel, show both values on an LCD screen, and push the data over Wi-Fi to my factory LAN. Where I’m at • Core hardware is assembled and a rough sketch is running, but the logic occasionally drifts and the Wi-Fi payloads are not stable. • The prototype can be shipped to you immediately, fully labelled and with a wiring diagram of the current build. What I need from you 1. Clean, well-commented Arduino code that reliably performs the simultaneous counting and timing functions. 2. Solid LCD interface: clear, easy-to-read formatting of count, timer, and simple status icons. 3. Robust Wi-Fi routin...

I’m building a compact, 4–6-layer mixed-signal board that will sit at the heart of a new sensor-interface product. The board must collect analog data, run it through an on-board DSP, and then push results out over Wi-Fi, Bluetooth, and a cellular link. To keep the unit fully portable, all power must be managed through an integrated battery management system, including charging, protection, and efficient rail generation for the analog, digital, and RF domains. Here’s what I need from you, start to finish: • Complete schematic capture with full part selection, paying special attention to RF front-ends, low-noise sensor inputs, the DSP section, and the battery management circuitry. • A 4–6 layer stack-up that cleanly separates noisy digital, sensitive ana...

I'm seeking an experienced electronics prototyper to create a functional demo of a wearable ultrasound device. Key Requirements: - Design and build a prototype of a wearable ultrasound device - Ensure the prototype is functional and suitable for demonstration purposes Ideal Skills and Experience: - Expertise in wearable device technology - Strong background in ultrasound technology and electronics - Proficiency in prototyping and functional demo creation - Experience with embedded systems and IoT is a plus Please provide examples of previous related work and a rough timeline for completion.

I’m building a handheld device that lets me roll a ball across any flat surface and have it actively steer itself so the pen mounted inside draws in the exact direction I choose. An optical-flow sensor will read surface motion, my code will translate that into heading commands, and two small motors inside the ball will supply the corrective spin. The overall sketch is already under way, but I need a specialist who knows Arduino-style hardware and, more importantly, how to marry miniature motors with an ESP32-C module for precise directional control of the ball. Your main focus will be advising on the right motor format, driver circuitry, power budgeting, and the physical/electrical integration so the firmware can call simple functions like setHeading() or setVelocity(). I’m ...

The rooftop array in my Decatur, TX home feeds a NeoVolta package (inverter plus battery storage), yet my monthly bill shows no meaningful drop in grid consumption. An earlier visit from another electrician ended without actionable findings, so the core issues remain unsolved. Your assignment begins with a thorough onsite diagnostic focused on the inverter and battery storage—the two components that have shown the most trouble. The panels themselves appear healthy, but confirm that as part of the investigation. I need a clear written assessment that identifies every defect, outlines why the system fails to offset usage, and details the parts, labor, or firmware updates required. Installed system already involves 71 solar panels, 16 NeoVolta batteries, and 4 NeoVolta inverters. Once...

I’m bringing a brand-new electronic charger to market and need an engineer who can turn my concept into a fully working prototype. The focus of this engagement is the complete design and prototyping phase—circuit architecture, component selection, enclosure layout, PCB, and initial functional build. Compact size is the single most important design driver, so every decision—from transformer topology to enclosure wall thickness—has to work toward a slimmer footprint without compromising safety or performance. I’m open to creative approaches such as GaN or other high-efficiency solutions if they help us meet that goal. To move forward, please send a detailed project proposal that outlines: • Your approach to achieving a space-saving form factor • Mi...

I want to turn a concept for a pneumatic actuator into a working prototype that can grip or clamp objects with repeatable, controllable force. The job spans mechanical design, pneumatic circuit sizing, and the embedded-software layer that will let me test different grip profiles through a simple interface. Scope • Translate my sketches and performance targets into detailed CAD ready for rapid manufacture (CNC, SLA or FDM are all fine). • Select off-the-shelf valves, fittings and sensors, then size the cylinder and air supply so the gripper reaches its force and stroke goals. • Develop quick-change firmware or a ROS/Arduino node that lets me adjust pressure, speed and dwell time from a laptop while logging position/force data. • Assemble and bench-test the unit,...

我已从设备上安全拆下 7037IC 芯片，物理状态完好。现在希望在对芯片零损伤的前提下，一次性读取出其中的手机操作系统固件。为协助你完成工作，我可以提供： • 高分辨率引脚照片 • 电路连接信息 • 芯片实物寄送 首选方案是使用 JTAG 工具；若你建议配合 ISP 编程器、NAND Flash 编程器或其他专用设备，也请说明理由与流程。 交付要求 1. 读取并生成完整可验证的操作系统固件映像（BIN 或 HEX）。 2. 同步提交哈希值或其他完整性校验证明，确保数据无缺失、无篡改。 3. 附一份简要读取日志或说明文件，便于我后续分析。 4. 如在提取过程中顺带获得基带或引导固件，请仅在说明中备注，交付物仍以操作系统固件为准。 期待你分享过往使用 JTAG（或相关工具）成功提取芯片数据的案例，说明所用设备、步骤及为何对芯片安全。请在接手后于一个月内完成全部交付。 如果你擅长精确引脚定位、信号完整性处理、低电压读取等细节，欢迎提出你的方案——我会根据专业程度与成功率优先选择合作。

I want a small, low-noise pre-amplifier built around the NE5532, powered from + - 15v. The board will slot straight into my DIY projects, so please place the op-amp in an 8-pin DIP socket for easy swapping and surround it with proper rail filtering and local decoupling: • bulk filter capacitors on each rail (before and after any regulators you choose) • 100 nF ceramics tight to every NE5532 supply pin I need two input connection styles on the same PCB—standard RCA jacks plus snap-on terminals—so the preamp can drop into other snap-on equipped modules without adapters. Output may remain RCA only. Deliverables • Complete schematic in your preferred CAD package (KiCad, Eagle, or Altium are all fine) • Clean PCB layout and production-ready Gerbers with ...

need a straightforward 2-bit counter designed entirely with discrete Bipolar Junction Transistor (BJT) logic. My priority is to keep the component count as low as practical while still delivering clean, glitch-free counting through the four binary states (00-01-10-11). • Use only BJTs – no FETs, ICs, or microcontrollers • Favor the fewest possible transistors and passives without compromising function • Standard 5 V logic levels are ideal, though I’m open to 3.3 V if that helps reduce parts Ultimately, the most important thing is that the design works practically on the breadboard—without issues and without noise.

I need an electrical part fitted in Inverness. The task involves fitting a front panel on a centrifuge. Requirements: - Experience with electrical components and machinery - Ability to test the equipment after fitting Ideal skills include: - Electrical engineering background - Proficiency in working with centrifuges or similar equipment - Attention to detail and reliability Please provide a brief overview of your experience and any relevant qualifications. Looking forward to your bids!

We are Unikeyic, a global electronic components distributor, and we are looking for experienced technical writers for a long-term collaboration. If you have a background in electronics engineering and enjoy writing high-quality technical content, we'd love to hear from you. What You'll Do You will write original technical articles related to electronic components and circuit design, including topics such as: Semiconductor devices Passive components PCB design Embedded systems Power management Electronic component selection Industrial automation IoT applications Electronic engineering tutorials The article title, outline, target keywords, and writing requirements will all be provided by us. Requirements To be considered, please make sure you meet most of the following require...

I have a couple of small IoT units here in Hamilton, ON (L9C 6A4), I need someone who can come to the house with Microchip’s IPE and the right programmers, connect to each board, and load the latest firmware. I will supply the compiled HEX files and the client will perform the test. All you need to do is bring the hardware (PICkit, SNAP, or similar), verify each flash. If you’re local, equipped, and comfortable doing house calls, let’s set a time.

I need design for the fabric backlit board size is 68 height and widht 88 for the reference I uploaded the image i need some changes in that

I have a consumer-electronics board that combines both surface-mount and through-hole parts and now needs full turnkey assembly. I will supply the BOM, centroid/PnP file, and all component datasheets. What I need from you is the complete build—sourcing any missing passives, mounting every device, soldering, cleaning, and functional testing—so the boards arrive production-ready. Key points you should know: • Component mix is roughly 80 % SMD (0402–QFN) and 20 % through-hole, so the job will require automated pick-and-place with reflow plus a secondary wave or selective-solder pass. • different Board size, two layer FR-4, lead-free finish. Typical run will be 50 prototypes, scaling to 1 000 if the initial batch passes. • I expect optical inspection (AO...

I will be sending my colleague Frank to Shenzhen shortly and need someone who already lives in the city to act as his on-the-ground sourcing partner. Your main job is to walk him through the electronics hubs—specifically Huaqiangbei, SEG Electronics Market, and Shenzhen North Huaqiang Market—and help secure DDR5 5600 MHz ECC RDIMM memory modules at the absolute lowest price. What I expect from you • You speak both English and German well enough to translate negotiations and small talk on the spot. • You are physically based in Shenzhen and know the layout of the major component markets. • You can identify stalls or wholesalers that carry Chinese brands such as CXMT or other local makers, yet you are just as comfortable checking prices for Samsung, SK hynix...

I'm seeking an experienced RF circuit designer to develop an RF amplifier. The amplifier should operate in the high-frequency range of 3 GHz to 30 GHz, with a medium output power level between 1W and 10W. Ideal Skills and Experience: - Expertise in RF circuit design - Proficiency in working with high-frequency components - Experience with medium power RF amplifiers - Knowledge of stability and linearity in RF circuits - Familiarity with simulation tools (e.g., ADS, HFSS) Please provide relevant work samples and a brief project plan.

I’m developing a signal-processing module and need a purpose-built power inverter circuit to drive it reliably from a 12 V DC source. The job centres on circuit design; PCB work can follow later once the schematic is locked down. Here’s what I’m looking for: • A complete schematic for a high-efficiency DC-to-AC inverter that delivers clean, low-ripple rails suitable for sensitive analogue and mixed-signal stages. • Component selection with readily available parts and clear justification for each choice. • SPICE-level simulations (LTspice, PSpice or similar) showing expected efficiency, output wave-form quality and thermal performance under 25 W continuous load. • A brief design report summarising calculations, key assumptions and any trade-offs ...

I have a Fuji MICREX-SX system built around the NA0P32-C PLC and fitted with an NA0LA-RS5 two-channel RS-485 card. My immediate need is to get the communications side working for data collection, not complex process control. Channel 1 must act as the Modbus-RTU master, polling two existing slave instruments and bringing their values into the PLC. Channel 2 must behave as a Modbus-RTU slave so that a SCADA/HMI station can read mapped holding registers from the PLC. I already wrote most of the ladder code in SX-Programmer, but I would like you to review it, adjust register mapping if something is off, and handle all parameterisation of the RS-485 card. Once the settings are in place, I’ll open a remote session (AnyDesk or TeamViewer) during on-site commissioning so you can verify...

I'm seeking a skilled PLC programmer and data analyst to automate energy management processes using Schneider systems. Key tasks include: - Monitoring energy usage - Controlling energy distribution - Optimizing energy efficiency Ideal candidates should have: - Experience with Schneider PLCs - Strong background in energy management systems - Proficiency in data analysis and automation Please provide relevant work experience in your bids.

My PlayStation 5 is out of warranty and no longer sends a stable picture to the TV— the screen flickers or shows nothing at all. I suspect the HDMI port is the culprit, but I can’t tell whether there’s any obvious physical damage just by looking. I need someone experienced in PS5 hardware repair to remove the faulty HDMI port, install a new one, and verify that 4K video and audio pass through perfectly once the console is reassembled. Please supply the replacement port, carry out clean, lead-free soldering, and return the unit fully tested with all screws and seals correctly refitted. Deliverable: • My PS5 returned with a brand-new HDMI port and confirmed, flawless display output on a standard 4K television.

I need a wrist-worn prototype that continuously samples ambient radiation and instantly warns the wearer whenever levels reach a hazardous threshold. The core goal is real-time safety, so reliability and fast response are critical. Here is what I expect at hand-off: • A fully assembled, battery-powered watch-style unit that can be worn and tested in the field • Firmware and source files that drive the sensor, handle threshold logic, and trigger the alert (sound, vibration, or LED—whichever best fits the space and power envelope) • Complete schematic, PCB layout, and bill of materials so the design can be reproduced • Brief usage guide explaining calibration, normal operation, and how to adjust alarm levels I’m open to your preferred development tools...

# Prototype Brief — Handheld Force-Sensing Probe ## Summary I need a working prototype of a small handheld instrument that measures the contact force applied through a thin rigid probing tip. When the tip is pressed against a surface, the device reads the applied force in real time and signals when a target force is reached. All sensing and electronics stay inside the handle; the tip itself is a slim passive pin. This is a proof-of-concept prototype, not a finished product. Priority is a fast, cheap, working demonstration. ## How it works (concept) - A thin, rigid probing tip is mounted on a shaft. - The shaft is free to slide a tiny amount (roughly 0.1–0.3 mm) inside the handle against a light preload spring. - Pressing the tip transfers axial force to a force sensor housed...

I already have a complete 4 kW solar kit on site and now need a qualified installer to get it up and running on my home. The house has a flat roof, clear of any shading or obstructions, so access and panel layout should be straightforward. What I’m looking for: • Secure mounting of all panels on the flat roof with appropriate racking and weather-proofing. • Electrical wiring from the array to the inverter, combiner box, and main service panel, following local code. • Installation of any required safety disconnects, grounding, and conduit. • System testing, commissioning, and hand-over with performance verification. I’ll supply the panels, inverter, and major balance-of-system parts; you bring the tools, mounting hardware if we’re missing anythi...

This is a hardware development project. I require a fully functional working prototype, not a simulation, research paper, or theoretical design. The final deliverable must demonstrate ultrasonic TOF measurement on small non-ferrous metal components through a working prototype and demonstration video. I need help taking a lab-bench concept for measuring ultrasonic wave velocity and turning it into a rugged, handheld instrument that works reliably on Platinum, Silver, Nickel, and brass samples. The core tasks include designing the full analog front-end (pulser/receiver, low-noise pre-amp, gain control, anti-alias filters), selecting and driving the piezo transducers, and implementing a precise time-of-flight algorithm in an embedded platform. I am open to ARM, DSP, or FPGA solutions as ...

I have a 16-channel relay board that must be driven by an Arduino. Each of the sixteen micro-switch inputs will correspond to one—and only one—relay output. When a switch is pressed the matching relay should energise for a fixed pulse of 2-3 seconds, then drop out automatically; there is no need for the user to alter that timing. Here is what I need from you: • Clean, well-commented Arduino sketch that reads the 16 discrete inputs, debounces the switches, and fires the appropriate relay for the required duration. • Pin-mapping and a simple wiring diagram so I can connect everything without guesswork (I will be using a common 16-relay module that accepts active-LOW signals, but please keep the code flexible enough to invert logic if needed). • Guidance on a...