전자 공학 Jobs

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 multifunctional docking station for both iOS and Android smartphones, designed with a modern and sleek aesthetic. Essential Features: - Speakerphone mode - Charging capability - Bluetooth connectivity - Ring for calls - Announce for texts - Handheld phone placement on top of dock Ideal Skills and Experience: - Experience in product design, especially for tech gadgets - Proficiency in designing modern and sleek aesthetics - Knowledge of Bluetooth and charging technologies - Strong understanding of user interface for notifications

I’m developing a compact armband that does more than simply hold a pair of true-wireless earbuds. The unit must: • accept and charge the earbuds inside a dedicated cradle • show remaining battery percentage on the armband itself • provide soft LED accent lighting that doubles as a quick “at-a-glance” charge indicator All power management, enclosure design, and cradle geometry need to be optimised specifically for modern wireless earbuds (no wired option required). I already have rough sketches of the form factor; what I’m missing is a full product-ready package that blends industrial design, electronics, and user-friendly ergonomics. Deliverables I’d like from you: 1. 3D CAD files of the armband body and earbud cradle (STEP preferred) 2...

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...

Job Title: MuJoCo Task Developer for LLM Reinforcement Learning Dataset We are looking for an experienced MuJoCo/Robotics Engineer to create high-quality MuJoCo benchmark tasks for LLM reinforcement learning. Responsibilities: Design MuJoCo tasks (MJCF/XML, morphology, controllers, or debugging tasks) Write clear task instructions () Implement deterministic automatic graders () Create reference solutions and baseline solutions Ensure tasks are reproducible, verifiable, and follow the provided guidelines Requirements: Strong experience with MuJoCo and MJCF Python programming skills Knowledge of robotics simulation and kinematics/dynamics Experience designing evaluation scripts or automated testing Ability to create deterministic, code-verifiable scoring criteria Nice to Have: Experie...

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,...

I need a Class D audio amplifier with tone control Bass Treble designed for professional audio equipment. The amplifier should deliver a power output between 100W to 500W. Key Requirements: - Input Support: XLR and RCA - Power Output: 100W to 500W - Suitable for professional audio applications Ideal Skills and Experience: - Expertise in designing Class D amplifiers - Experience with professional audio equipment - Knowledge of XLR and RCA input integration - Proven track record in high-power audio amplifier projects Please provide portfolios and relevant experience.

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 already have PiSDR pulled from and running on a Raspberry Pi 4; what I need is a clean, repeatable build that behaves exactly the same every time I power up the board and mini HDMI display. Task 1 – Reliable display boot • Make PiSDR load the desktop and SDR stack automatically on power-on, scaled correctly for the Pi 4 mini monitor with no extra keystrokes or shell commands. Task 2 – Dual-role connectivity • Configure the image so the Pi can lock onto any available open satellite link for down- and uplink (receive and transmit). • At the same time enable the on-board Wi-Fi to rebroadcast that link as a portable hotspot, giving nearby devices internet access through the satellite path. GUI requirement Both satellite comms and hotspot functionality a...

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 need an experienced APsystems solar installer or technician to remotely diagnose and configure the grid protection profile of an APsystems EZHI hybrid inverter. System details: - Device: APsystems EZHI - Location: Mogadishu, Somalia - Grid frequency: stable 50 Hz - Grid voltage range: approximately 238–255.5 V - Current setting criteria shown by the device: “default for 50Hz grid” - Current problem: frequent “AC abnormal” disconnections - grid profile previously worked more reliably Required work: 1. Verify the currently active grid profile and all AC protection parameters. 2. Confirm whether the South Africa / NRS 097 grid profile is supported by this EZHI firmware. 3. Apply the complete approved South Africa profile, if technically suitable. 4. Do not...

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.

# 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...

I want to bring a compact, consumer-friendly utility gadget to market and need an engineer who can take it from idea to production. The core of the device is simple: when triggered it must emit a clear, audible beep, making it useful as a quick-locate or alert tool. Beyond that single function, everything should be engineered for reliability, low power draw. Here’s the scope as I see it: • Electronic and industrial design: refine my concept, choose components, and build a working prototype that delivers the beeping feature consistently. • Connectivity & app: create a lightweight companion app for both Android and iOS (Bluetooth Low Energy is fine) so users can trigger or silence the device from their phone. Or it can be connected through Google Home or Smartlife &...

I need an experienced embedded hardware / PCB engineer to design a production-ready STM32-based main controller PCB for a therapeutic massage/spine bed system. This is a build-to-spec project. I already have a detailed engineering handoff package including system architecture, old PCB references, estimated current budget, pin maps, connector notes, BOM guidance, firmware handoff notes, layout requirements, and test plans. The freelancer’s main responsibility is hardware design and manufacturing outputs: schematic, PCB layout, Gerbers, BOM, assembly files, and firmware-ready hardware documentation. Firmware will be developed separately using AI/Codex/Claude from existing working ESP32 firmware. I will burn the firmware once the board is ready. The PCB must support first firmware flash...

I need a PCB hardware designer who already understands fuel-grade gas dispenser electronics and has hands-on experience designing intrinsically safe circuits. The job centres on the control system of the dispenser; the board you create must reliably manage flow-rate control while meeting the strict electrical safety demands of hazardous-area operation. Here’s what I expect from the engagement: • Develop a full schematic that integrates the pump’s sensors, valve drivers and my chosen microcontroller, then add a custom zener-barrier stage to limit energy into the hazardous zone. • Lay out a compact, production-ready PCB (Altium Designer or KiCad are both fine) observing creepage, clearance and thermal guidelines for ATEX/IECEx intrinsic-safety compliance. • P...

I am seeking an expert Embedded Electronics & Product Designer to develop a customized, high-performance "All-in-One Convertible AC/DC Fan" from scratch. We require both the 3D CAD Model (.STEP) and the PCB Gerber Files (RS-274X format) along with the BOM. Key Requirements: 1. 2-in-1 Convertible Mechanical Design: Must function as a stable table fan, but must include a heavy-duty detachable bracket/clamp to securely mount it inside Indian commercial truck cabins and tractors to withstand high vibrations. 2. Battery Compartment: Hollow bottom base optimized perfectly to lock our 12.8V 12Ah LiFePO4 battery pack (Exact dimensions: 140mm L x 70mm W x 75mm H). 3. 100% Copper BLDC Motor: 30W-35W max power, customized for Rated DC 12V operation, D-Cut shaft (8mm dia, 40mm outer len...

We need to solve using Simulink,Simscape,Simscape Fluids (Isothermal Liquid Library)

# FastForm Capacitive Sensor Electrode — PCB Design & Order Brief --- ## Overview I need a **very simple 2-layer PCB** designed and manufactured. Two variants, 5 boards each. **This board has no components, no traces, no schematic, and no routing.** It is four copper rectangles and three vias. Someone competent with KiCad should complete the layout in under an hour. **Important context so the design decisions make sense:** this is not a normal circuit board. It is a **capacitive sensor electrode** that will be immersed in wet concrete. The **solder mask is a functional dielectric layer**, not a cosmetic finish. Several instructions below will look unusual for a PCB — please follow them exactly rather than applying normal PCB conventions. --- ## Deliverables 1. **KiC...

Only For USA ( Texas preferable ) I need an experienced gas-turbine specialist who can log in remotely and walk me through diagnosing and correcting persistent startup problems and noticeable performance drops on one of our units. All symptoms point toward the control system, so I’m looking for someone who knows their way around typical turbine control architectures—think Mark VIe, PLC/SCADA integrations, sequencing logic, sensor calibration, and related HMI trending tools. Here’s what I expect once we begin: • A live remote session to review current alarms, trend data, and logic charts. • Clear, written recommendations (and if possible, revised logic files) that get the machine through a reliable start and restore baseline performance. • A con...

Electrical teknisi Pemasangan intalasi listrik dan repair

​"Hi, I want to place an order for a premium, custom High-Power Mono Amplifier PCB design. This amplifier will be installed on a tractor and needs to be completely rugged, high-performance, and bulletproof. It will mostly drive heavy loads like four 12-inch or two 16-inch woofers, but it must also safely drive small 4-inch speakers without burning them out. ​Please design the PCB combining all the following specifications into a single layout: ​Power & Architecture: High-Power Mono Amplifier using a Dual-Supply (+VCC, GND, -VCC) topology, capable of handling around ±35V to ±45V DC input. ​Output Stage: 4 Power Transistors in total -> 2x 2SC5200 (NPN) and 2x 2SA1943 (PNP) connected in parallel for high current and deep bass. Driver stage should use BD139 and BD140....

I need help bringing a single-layer PCB back to life. At the moment it shows three clear problems: several components have failed, some traces are visibly damaged, and the board refuses to power up consistently. I can supply the original Gerber/layout files, but the schematic is no longer available, so part of the task will involve tracing the nets and inferring the missing circuit details. Your job is to: • Pin-point every faulty component and specify equivalent replacements • Locate and mend any open or shorted traces, or propose jumper fixes where copper is beyond repair • Restore a clean, stable power rail and verify correct voltage levels under load • Give me a concise repair log that includes measurements, photos of each fix, and final functional tests A ...

I’m ready to refresh my retail space in the 48038 area by swapping out a small run of ceiling fixtures—fewer than ten—for daylight-tone LED flat panels. The existing housings are already LED-ready, so this should be a straight replacement: remove the current panels, pop in the new daylight units, test, and tidy up. The work must be done during store off-hours (early morning or after close) so sales aren’t interrupted, and I’d like all debris hauled away once the job is finished. Please bring everything you need for a clean, code-compliant installation and verify each panel is firing at full brightness before you leave. I am specifically looking for a licensed and insured electrician with experience in commercial buildings. If you’ve handled retail ...

The square wave should have an equal mark-to-space ratio, a frequency equal to that of the resonant frequency of the metal bar estimated in Part 1, and an output voltage going from 0 volts to +15 volts. Show full working for calculating component values and draw the circuit diagram. Part 1 is measure the frequency response of one of the metal bars from the Electronics Lab. You will need to use the signal generator (function generator) and oscilloscope to do this. Plot the resulting frequency response across the range 100kHz to 200kHz, and state the resonant frequency of the metal bar.

I need a PCB layout design for a small general lighting application using standard LEDs. The PCB size should be less than 10x10 cm. Ideal skills and experience include: - Proficiency in PCB design software (e.g., Altium Designer, Eagle, or KiCAD) - Experience with LED circuit design - Knowledge of layout techniques for thermal management - Attention to detail and accuracy in design

I have a working concept for an E-Rickshaw diagnostic tool based on an ESP32 DevKit V1, and I now need a production-ready 2-layer PCB. All circuitry must operate from the vehicle’s 48 V line, stepped down via an LM2596. The board will drive an I2C OLED, measure battery voltage, and sense individual lines for the horn, headlight, indicators, brake light, and reverse buzzer. Two probes (A & B) are included for quick continuity tests. Good engineering practice is mandatory: reverse-polarity, fuse, TVS and general input protections must be designed-in. Preferred workflow • KiCad is my first choice; if you feel EasyEDA delivers clear advantages, let me know. • Layout decisions should favour ease of assembly over sheer compactness or extra thermal tricks. • Blueto...

I need a single partner who can handle three related plating jobs and deliver consistent, verifiable quality across each one. The parts involved are aluminium alloy wheels that must receive a bright nickel-chrome finish, mild-steel strip that needs a reliable nickel layer, and copper wires that call for a nickel-plus-tin deposit. The finishes serve all three classic purposes—eye-catching appearance, long-term corrosion resistance, and dependable electrical conductivity—so any method you propose has to balance these outcomes rather than optimise for just one. Because the parts come from different production lines, I will ship lots separately and expect you to return them with the following in place: • Nickel-chrome on the wheels with show-grade brightness, even coverage i...

I need a cable assembly made from our plans for a toilet flush sensor prototype. The assembly involves a combination of flat cable and pre-made cable that we will cut and extend. We have built a couple of basic units but need about a dozen made for field trials. Requirements: we can provide some of the materials - cutting and extending off the shelf IoT sensor cable - Speaker flat extension cables - will need water proofing Ideal Skills and Experience: - Experience with flat cable and general assembly - Proficiency in working with pre-made cables - Attention to detail and precision in cable cutting and extending - water proofing and protecting Looking for a skilled professional to ensure a reliable and functional assembly. Please provide relevant experience in your bids. this may be i...

I already have a KiCad v10.4 design exported to Gerber and will share the schematic, PNG layout images and an initial BOM. What I need now is a careful re-work so the board prints flawlessly on a Voltera V-One. Here is the scope in plain terms: • Import my existing Gerbers, then modify and optimise them for a 2" × 3" FR1 board. • Advise whether the plated holes should be drilled for 1.0 mm or 0.4 mm copper rivets and implement the correct drill table. • Provide full design assistance: refine component selection and placement, reroute traces for cleaner paths, and add or remove small features where that improves manufacturability or current handling. • Keep all components at least 0.4 in from each corner; the corner mounting holes themselves are n...