Diseño PCB Jobs

Necesito que me desarrolles el diseño completo de una máquina de llenado basada en Arduino para dos tipos de líquidos viscosos: zumo y aceite. El rango de dosificación debe ir de 10 ml a 120 ml y la velocidad de dispensado ha de ser lo bastante alta para trabajar en línea con una cinta transportadora: cada vez que una lata pase, el sistema debe verter la cantidad programada sin detener la cinta. Requisitos clave • Detección de lata: prefiero un sensor inductivo u óptico; acepta sugerencias si logras mayor fiabilidad. • Control de volumen: quiero poder configurarlo por código y, opcionalmente, afinarlo con un potenciómetro frontal. • Compatibilidad de líquidos: las piezas en contacto con zumo y aceite ...

I want to build a small, self-contained charging station that wakes up only when it “sees” a bottle and a can. The core will be an Arduino (any recent 32-bit board is fine) tied to a solar panel and battery pack. A lightweight AI vision module or camera running something like TensorFlow Lite or OpenCV should continuously—or on a duty-cycled basis—look for bottles. The moment a bottle is detected, the system must move straight into the charging routine without waiting for external confirmation; no alerts, no logging, just automatic activation. What I need from you • Complete Arduino firmware that integrates the vision trigger with the charge-controller logic. • A schematic / wiring diagram showing how the camera, solar panel, charge controller, and any...

I have already drafted a full specification for a simplified television remote control aimed at older users, complete with ergonomics, button layout, and overall product vision. While I finish the patent application, I now need a skilled partner to bring the electronics and software to life. On the hardware side, the priority is circuit design. I will share detailed functional blocks, power-budget targets, and regulatory constraints; you would translate these into a clean schematic that is ready for board layout (I will also welcome help on the actual PCB routing once the schematic is locked). For software, I need both the embedded code that will run on the microcontroller and the on-screen user interface logic that appears on the TV. Simplicity and reliability for elderly users are the ...

We are seeking an experienced Senior Electronics Engineer from Europe or the USA with expertise in wearable devices and IoT systems to help design and develop a wearable sensor board. The project involves PCB design, schematic development, and firmware programming for ECG sensors, Li-ion battery charging, USB communication, and an ESP32 MCU. Key Responsibilities: -PCB Design: Develop high-quality PCB layouts for a wearable sensor board, including ECG connectors, USB-to-UART interfaces, and battery charging circuits. -Schematic Development: Create and review schematics for the BG77 LTE module, ESP32, Li-ion charging, and sensor interfaces. -Firmware Programming: Implement and optimize firmware for the ESP32 MCU, including Wi-Fi/BLE communication, sensor data acquisition, and USB communicat...

I need an accurate and professional electrical wiring diagram for my installed DIY grid-tied solar array system. The deliverables should include: - Service panel connections - Grounding schedule - Details required for electrical inspector approval This involves solar panels and an inverter, so experience in designing layouts and knowledge of local inspection requirements is essential.

**Project Title:** ESP32 Based Educational Robotics PCB Design **Project Description:** I am looking for an experienced PCB designer to design an educational robotics development board. The board will be used for teaching robotics, IoT, and programming to students . The board should be based on an ESP32 module and must integrate multiple components and connectors so students can easily connect motors and sensors. The board should also be compatible with Scratch, so students can control the hardware using Scratch blocks. The freelancer should also create the required firmware or extension file needed to connect the hardware with Scratch. **Key Features Required:** 1. ESP32 module for WiFi and Bluetooth connectivity 2. Motor driver for 2 DC motors 3. Battery connector for rechargeable L...

Our new consumer-grade electronics device ships soon and it needs a concise, easy-to-follow user manual that any end user can pick up and understand without extra help. The manual should walk the reader from unboxing through first-time setup, daily operation, basic maintenance, and simple troubleshooting. Scope • Gather the essential technical details I will supply (specs, safety notes, feature list) and turn them into plain-language instructions. • Organize the content logically with clear headings, numbered steps, and diagrams or call-outs where visuals add clarity. • Highlight safety warnings and warranty information so they are impossible to miss. • Provide both an editable source file (Word, Google Docs, or InDesign—your choice) and a print-ready PDF...

I own an original KeyMouse Track, now discontinued, and would like to bring it back to life. Reference product: Intended production size: Only for personal use at this point. However, where possible and cost-effective, design decisions should consider future scalability to larger production runs. Available artifacts: - STL Files (I don't know whether these files are suitable for manufacturing, or some earlier draft): - Assembly instructions: - Original PCB which can be purchased: - Track ball sensor module image and description: - Custom-made wrist extension CAD files: Deliverables: - Deliver cleaned and validated STL files suitable for reliably producing a functioning unit via 3D printing. with the external wrist extension integrated - Full reverse engineering into par...

I’m developing a compact data-acquisition module and need a local electronics engineer in Austin who can take the mixed-signal front-end from concept to ready-to-fab documentation. The heart of the job is a clean, low-noise analog section feeding a high-resolution ADC, with the digital side handling basic buffering and a simple SPI or I²C hand-off to my existing microcontroller board. We’ll meet in person for the initial requirements review and again when hardware is on the bench so rapid tweaks are possible. I already have rough performance targets—sampling at 1Hz, 12–16-bit resolution, and a 12V single-rail supply—but I’m looking for your guidance on component selection, input protection, and clocking strategy to hit those numbers without over-en...

Project Overview: We are developing a motor controller PCB for an educational differential-drive mobile robot used in university teaching and research. The board is based on a validated prototype with proven firmware, and we now need a production-quality PCB designed for manufacture and CE/UKCA certification. A detailed hardware specification document will be provided to the selected designer. This brief summarises the scope and complexity of the project. Board Function: The board controls two DC gearmotors with closed-loop velocity control, monitors battery voltage, manages safety systems (emergency stop, timeout, heartbeat), and communicates with a host computer or single-board computer over USB. It also provides regulated power to downstream devices via a USB-C Power Delivery source po...

I'm looking for an experienced PCB designer to create a single-layer PCB for a consumer electronics radio application. The PCB will need to incorporate sensors. Key Requirements: - Design a single-layer PCB - Application: Consumer electronics (radio) - Must include sensor components Ideal Skills and Experience: - Proficiency in PCB design software - Experience with consumer electronics, especially radio devices - Strong understanding of sensor integration on PCBs - Attention to detail and ability to meet deadlines

I am building DigitScale IA, a dedicated body-composition scale that goes beyond mere weight and zeroes in on bone density. The goal is a standalone hardware device—complete with its own enclosure, sensing module, firmware and simple companion interface—that can provide reliable, non-invasive bone-density readings each time a user steps on it. Your expertise in sensor selection, PCB design, firmware development and calibration will shape the entire product. Feel free to propose capacitive, impedance-based, ultrasound or hybrid approaches; accuracy and repeatability are the metrics that matter most. Bluetooth LE connectivity is preferred so users can pull their data into a mobile app later, but a basic on-device display will suffice for the first iteration. Deliverables &b...

We are building a solar-powered, low-power IoT field device used outdoors in orchards. We need an experienced PCB design engineer to develop a custom PCB that integrates and reliably powers the system. Scope (PCB only): 1) Schematic + PCB layout for a low-power embedded system 2) Power design: solar charging + battery management, stable rails, protection, brownout handling, and power-path switching 3) Interfaces for MCU + peripherals (camera, GNSS, cellular modem, temp/humidity sensor, RTC/power scheduler) 4) Connector selection, ESD/weather-related protection considerations, test points, and design for manufacturability Deliverables: production-ready Gerbers, BOM, pick/place, schematic, and design files (KiCad/Altium—your preference) Nice to have: Prior experience with solar/batt...

I need a prototype component for climbing accessories. The component needs to be made from a plastic pipe and designed for impact resistance. Ideal Skills and Experience: - Experience in prototyping sports equipment - Knowledge of materials for impact resistance - Background in designing climbing accessories

I’m building a pair of DIY tower speakers and need a custom-designed, two-layer PCB that ties everything together. The board must fit comfortably inside the cabinet, so please keep your layout within 260 mm (W) × 190 mm (H) and use 2 oz copper. All core functions—amplifier stages, passive/active crossover networks, and an onboard Bluetooth module—have already been mapped out in a block diagram that I will share. Your job is to translate that diagram into a production-ready board, routing power and signal paths cleanly and meeting good audio-grade practices for noise, thermal management, and grounding. Once the schematic and layout are complete, I’ll need the standard fabrication package: • Gerber and drill files • Read-me with stack-up and cop...

Step1: Downloaded file to be saved in a folder /replace it(Skill Pending). Step2: Open a new excel file. Step 3: Load from the downloaded File>> New Excel file>> Data>> Get Date>>From file>> from Excel workbook>> Load Step 4: Filter Location(Except Netherlands I need all location but Netherlands line items should not be deleted on the worksheet, Filter Oracle Grade- exclude #NA, M5, M6- line items should not be deleted on the worksheet) Step 5: Endorsement Status to be displayed for Skill wise as well as resource wise, How the dashboard to be looked like Need to show Skill pending resources Endorsement pending resource along with supervisors Proficiency level pending resources Primary skill pending resources Last updated >1 Year resources ...

I need a complete, production-ready design for a 100 W LED luminaire that will serve as the main light source in a living-room setting while still being robust enough for occasional outdoor use. The fixture must deliver high lumen output with excellent efficacy, maintain color stability over time, and integrate smoothly with common smart-home ecosystems (Wi-Fi, Zigbee, or similar). Scope of work • Component selection: high-efficiency LED array, constant-current driver, thermal interface materials, optics, housing, and an IP-rated enclosure or coating suitable for indoor/outdoor crossover use. • Electrical design: full schematic and PCB layout for the LED driver, MCU or smart-control module, surge and polarity protection, and any required EMC filtering. • Thermal manag...

We are seeking a highly competent Freelance Automation Engineer to support the design, development, programming, and commissioning of PLC & SCADA systems for wastewater treatment role requires a results-driven professional who can independently manage automation scope—from control philosophy development to site commissioning—while ensuring full compliance with industry ResponsibilitiesDesign and develop PLC & SCADA architecture for wastewater treatment control philosophy, IO lists, cause & effect matrices, and system PLC programming, HMI/SCADA configuration, and system FAT, SAT, troubleshooting, and commissioning and ensure compliance with IEC, ISA, and industrial automation with electrical, instrumentation, and process engineering control logic for efficien...

I want to put an end to guessing when my plants need water by building a small, battery-friendly device that measures soil moisture, pushes the reading to the cloud, and emails me whenever the level drops below a threshold I can set in a companion mobile app. Core features • Soil moisture detection with reliable, calibrated readings • Wi-Fi or BLE link from the probe to the cloud • Email alert generation (no SMS or push needed) • Mobile-only dashboard that shows current moisture %, historical trend, last alert time, and a slider to adjust the alert threshold I’m open to an ESP32, ESP8266, or similarly low-power MCU and prefer code in Arduino/C++ or MicroPython if that speeds things up. Low standby current, deep-sleep cycles, and a compact PCB (or even a ...

Please be careful, you must create the 3 real PCBs; we are not interested in virtual projects. After the 3 PCBs have been successfully tested here in our office, we will release the money following the rules of freelacer.com. I will agree on the cost of the work and the time of execution with the developer. I've already built some prototypes of a circuit capable of switching a single 230 V, 16–30 A line to 4, 8, or 12 outputs—without power loss—but none of them have reached the standards I expect. I have schematics, calculations, thermal measurements, and test logs: enough material to clarify every technical detail and speed up your work. I need a senior designer who can transform all this into a final solution, complete with ESP32 firmware, a multilayer PCB (4 or...

I need a working prototype of a compact pool-cleaning robot designed, built, and shipped to Pune by 20 March. Its two core tasks are debris collection across the pool floor and reliable wall-climbing so it can scrub and vacuum vertical surfaces as well. The unit must run on a rechargeable battery pack—no cords in the water—and be steered with a simple handheld RF remote (forward, reverse, left, right, start/stop). A smartphone app or timer isn’t necessary; keeping the hardware lean is key because the entire build, plus packing and freight, must stay within an 18 k INR ceiling. I’m open to clever use of 3-D printed housings, sealed brushed or BLDC thrusters, and readily available filters to hit that cost target while ensuring waterproof integrity. Good buoyancy cont...

Design Brief: High-Reliability Bluetooth Roadbook & Multimedia Controller Project Code: RALLY-MEDIA-V3 Target Platform: PCBA (Automotive / Rugged Environment) 1. Project Vision The goal is to create a high-performance, ultra-compact Bluetooth Low Energy (BLE) controller for motorcycle navigation (Roadbook) and multimedia. The device must replace high-end commercial modules (like Rallyable) with a custom, cost-effective solution that survives the electrical noise and physical vibration of off-road motorcycles. 2. Scope of Work The engineer must provide a complete PCB design (Schematic + Layout) optimized for JLCPCB SMT Assembly Service. Two design paths are considered: Path A (Integrated): Full custom PCB with nRF52840 SoC and tuned antenna. Path B (Carrier/Baseboard): A "Shiel...

I want help building a simple zigbee device to use as a smart thermostat. its using a esp c6 super mini, screen, 2 buttons and a presence sensor. I have tested all the wiring and all works and got it showing on the ESP. The part i want, is to turn it into a Device, that when you connect it to Home assistant through Zigbee. it shows on the UI of Home assistant boxes you can fill in. One for Room Temp sensor (external sensor so you enter a device ID to read the state) One for Boiler ID (to read if the Boiler is currenttly on or off and show a icon on screen to show its state) and one to enter the Smart TRV device id, so what temp i set on the Thermostat it then updates it to the TRV. And to give the Presence Sensor a Device ID, so i can use it to set Automations in Home assistant manual...

I need a skilled 12d user to convert engineering schematics into DXF format. Minor modifications will be required during the conversion process. Requirements: - Proficiency in 12d software - Experience with engineering schematics - Ability to handle minor modifications - Output in DXF format Ideal Skills: - CAD software expertise - Attention to detail - Experience with DXF file format Please provide examples of similar work.

I'm seeking a skilled designer to create a functional and appealing layout for a mixed-use laundromat (self-service and full-service). Key areas to include: - Waiting area - Folding stations - Service station The design should embody an industrial yet bright vibe. Ideal skills and experience: - Experience in designing commercial spaces, particularly laundromats - Strong understanding of customer flow and functional layouts - Ability to incorporate an industrial design with a bright aesthetic - Proficiency in creating inviting waiting areas and efficient service stations

I'm seeking a skilled designer to create a functional and appealing layout for a mixed-use laundromat (self-service and full-service). Key areas to include: - Waiting area - Folding stations - Service station The design should embody an industrial yet bright vibe. Ideal skills and experience: - Experience in designing commercial spaces, particularly laundromats - Strong understanding of customer flow and functional layouts - Ability to incorporate an industrial design with a bright aesthetic - Proficiency in creating inviting waiting areas and efficient service stations

我正在开发一款带有智能 LED 的硬件模组，主控ESP32，需要一位经验扎实的硬件工程师协助完成从原理图到 PCB 连接图的设计。核心需求如下： • 智能 LED 电路：请为多颗可寻址 LED 设计驱动与电源部分，确保亮度与色彩控制稳定，并预留固件升级和热管理方案的接口。 • 无线通信接口：电路板需同时支持 Wi-Fi 与蓝牙，方便后期通过手机 App 或云端进行调光与状态监测。 • PCB 设计：输出完整的原理图、布线文件（Altium Designer 或 KiCad 均可）、Gerber、BOM 以及关键布线规范说明，力求尺寸紧凑、EMI 控制良好。 • 生产可行性：器件选型应以量产常用料为主，并在文档中标明替代料号。 • 交付物： 1. 原理图（PDF + 源文件） 2. PCB Layout（源文件 + Gerber） 3. BOM 与简要成本预估 4. 设计说明书（含测试要点与校准建议） 如有成功设计智能灯带、氛围灯或类似消费电子产品的经验，请在回复中简述项目要点与所用工具版本。我会根据方案完整度与以往案例选择合作。

We need a PCB designed in KiCad 8.x for a compact RS-485 sensor node that measures temperature and humidity. Quality, DFM compliance, and proper protection circuits are important. Board overview: 55 × 30mm, 2-layer FR4, black solder mask, lead-free HASL MCU: ATtiny1614 (SOIC-14) Sensor: SHT41 temperature/humidity (DFN 1.5×1.5mm) Communication: RS-485 half-duplex via MAX3485 transceiver Connectors: 2× RJ45 (daisy-chain in/out) + 1× JST-SH 4-pin (external sensor port) Power: 5V input via RJ45 → AMS1117-3.3 LDO → 3.3V Full protection circuits: reverse polarity (P-MOSFET), PTC fuse, TVS diodes (RS-485 + VCC + UPDI), fail-safe biasing, ferrite bead EMI filter Thermal isolation between sensor and electronics (routed PCB slot + ground pour keepout) 3-bit solder ...

My WinCC SCADA server still has free tags available, and I want to bring a second Siemens-based machine online so I can capture its data in real time. Your task is to establish the link between that PLC and the existing WinCC installation, map the new tags, and build a clear graphical dashboard inside WinCC. Key points for the dashboard: • Parameters: Temperature, Humidity, Production Rate and Weight (displayed visually with live updating trends, status colours, and historical recall). • Layout: a clean graphical interface that fits naturally alongside the current WinCC screens. Once the PLC is communicating and the tags are confirmed, I’ll need: 1. A working WinCC screen showing both live values and 24-hour trends. 2. Basic alarm limits configured so out-of-r...

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I’m ready to move from rough sketches to a fully-specified electrical design for my new build and need a professional set of documents I can hand straight to the contractor and the local authority. The scope is the entire property: living areas, kitchen and bathrooms, all bedrooms, the utility room, a small studio, the loft conversion, plus outdoor circuits for external lighting and cabling that will feed two sheds/outbuildings. The final package must spell out circuit counts and loading, breaker and RCD selection, cable sizing, earthing and bonding details, and clearly show switch, socket and lighting points on coordinated floor plans. A single-line diagram and a board schedule are essential so the installer can see at a glance how everything ties together. PDF is fine for review...

I need a compact, single-fire line smart light switch designed around the ESP32-C3, strictly for residential use and housed in a PC-V0 enclosure. Because there is no neutral wire available the power stage has to ride on the leakage current, so I am counting on a proven AC-DC buck such as the Hi-Link HLK-PM01 (or similarly tiny module) and a reliable bypass-capacitor network that keeps the MCU alive even with very light loads attached. Switching must be silent and fast: think BTA16 (or comparable TRIAC) driven through an opto-isolated MOC3041 gate. Absolutely no mechanical relays are allowed. Behind the faceplate, the board should hide an HLK-LD2410 microwave radar sensor; its trigger will be combined with a capacitive interface that recognises multiple touch points on the glass front. Sp...

Hello, I am seeking a qualified solar design professional or engineering firm to produce a complete, permit-ready off-grid solar + battery + generator design package for a residential project located in Coconino County, Arizona (Williams, AZ area). This is an off-grid installation (no utility interconnection). The design must be suitable for AHJ submission and permit approval in Coconino County. PROJECT OVERVIEW • Ground-mounted PV system (30 panels total, approx. 13.5 kW DC) • Mounting preference: pressure-treated wood posts with aluminum or Unistrut rails • Inverter: EG4 FlexBOSS21 (48V split-phase) • Batteries: EG4 PowerPro (2 units, expandable architecture) • Generator: Generac Guardian 7171 (10kW) • Generator integration: 2-wire start via inverter AGS...

I need an experienced RF technician to install antennas on a tower. Key tasks include: - Installing antennas securely and correctly on the tower - Ensuring all installations meet safety and regulatory standards - Collaborating with our team to coordinate installation schedules Ideal skills and experience: - Expertise in RF equipment and installation - Experience working on towers - Knowledge of safety regulations and practices in RF installation

We are looking for an engineer team which has a good PCB design skill and motor driver programming skill. This project is to upgrade our exhisting PCB(Old version→ prototype) to update version. We will make one prototype PCB to test. And we will break it down to two PCB for later (standard and downgrade version) This machine has the following system: 1 x main CPU (GD32F450IGH6) 1 x AC motor inverter (RS485) Command input 1x sensor Up to 5x stepping motor ( synchronized, need fast movement)　NCcode input/ Tool path input. Up to 5x sensor 1 x DC motor 1 x sensor 1 x SBC( RPI) need to connect to main CPU ( need to have fast communication ) 3 x stepping motor 3 x sensors 1 x DC brushless (small )-added 2 x stepping motor-added 3 x COM to other device. We will send the current prot...

AI-Powered Smart Toy Developer (Hardware + AI + Mass Production) We are developing an innovative AI-powered interactive toy and are looking for a highly skilled professional who can help us design and build a cost-effective, production-ready solution. The ideal candidate should have strong expertise in hardware design, AI/ML integration, and product development for scalable manufacturing. This is not just a software project — we need someone who understands the full pipeline from electronics to AI to packaging and mass production. Key Responsibilities • Design low-cost, scalable hardware architecture (ESP32 / Raspberry Pi / custom PCB preferred) • Integrate Speech-to-Text (STT), Large Language Model (LLM), and Text-to-Speech (TTS) • Optimize for low latency and ch...

I’m in the concept stage of a passion project: putting full-featured 5G with Band 71 support into a nostalgic flip or slider body. Before investing in boards, antennas, and tooling, I’d like an expert sounding board to walk me through the real-world hurdles and options. During a Zoom session I want to cover: • Viability of matching modern 5G RF, especially Band 71, to the tight clearances of classic flip/slider housings • Recommended donor shells or new-tooling approaches—I’m wide open to suggestions • Strategies for long battery life without bloating the form factor • PCB layout, antenna placement, thermal concerns, and component sourcing • Certification path (FCC, PTCRB), estimated costs, and realistic timelines toward a first pr...

I’m putting together a small hobby circuit centered on about 16 operational amplifier based aidiotic filters and need a clean, single-layer PCB layout to bring it to life. The schematic is already available from TI for OPA1602. Here’s what I expect: • A single-sided layout, large ground planes, keeps traces short and avoids jumpers where possible. • Project files in KiCad - Schematic and PCB only. Nothing else is needed. Acceptance check: the files should load without DRC errors in the native tool, and a quick 3D view must confirm there are no component overlaps. Once these points are met, I’ll mark the project complete immediately.

I need a skilled electronics circuit designer specializing in power electronics. The project involves designing a power supply for a phone charging system using both AC and DC Key Requirements: - Design of power supply circuits - Experience with mixed-signal environments - Understanding of radio technology Ideal Skills: - Proficiency in analog and digital circuit design - Experience with simulation tools (SPICE, MATLAB, etc.) - Strong background in power electronics Please provide examples of similar work done.

Project Title: 600VA Pure Sine Wave Offline UPS Design (STM32 Based) Project Description: We are looking for an experienced Embedded Hardware and Firmware Engineer to develop a 600VA Offline Pure Sine Wave UPS using STM32G030K6T6 microcontroller. We already have a working board. The requirement is to reverse engineer and redesign the same board properly for production with complete documentation and firmware. Technical Specifications: * Input: 230V AC, Single Phase * Output: 230V AC Pure Sine Wave * Battery: 12V 7Ah SMF * Topology: Transformer-based (Low Frequency) * Control: Fully STM32 controlled inverter logic Required Features: * Automatic changeover (Mains to Inverter) * Pure sine wave PWM generation via STM32 * 2-minute auto shutdown in backup mode * Low battery cutoff protect...

We are a Korean pcb cad service company with 20 years of experience, seeking to outsource pcb layout tasks, primarily focusing on routing and layout optimization,on a regular basis. We are looking for skilled freelancers for long-term cooperation. Job details: - Component placement will be provided; your main responsibility will be routing and layout optimization. - Board size and complexity will vary. - Layer count for boards will range from 4 to 16 layers. Required Tools: - Proficiency in PADS - Proficiency in Altium Designer Work type: We prefer long-term cooperation and offer a stable workload for qualified partners. Compensation can be hourly or fixed-price per board, depending on the project scope and agreement. The announcement period is until the position is filled. Please subm...

We are a Korean pcb cad service company with 20 years of experience, seeking to outsource pcb layout tasks, primarily focusing on routing and layout optimization,on a regular basis. We are looking for skilled freelancers for long-term cooperation. Job details: - Component placement will be provided; your main responsibility will be routing and layout optimization. - Board size and complexity will vary. - Layer count for boards will range from 4 to 16 layers. Required Tools: - Proficiency in PADS - Proficiency in Altium Designer Work type: We prefer long-term cooperation and offer a stable workload for qualified partners. Compensation can be hourly or fixed-price per board, depending on the project scope and agreement. The announcement period is until the position is filled. Please sub...

I need an accurate and professional electrical wiring diagram for my installed DIY grid-tied solar array system. The deliverables should include: - Service panel connections - Grounding schedule - Details required for electrical inspector approval This involves solar panels and an inverter, so experience in designing layouts and knowledge of local inspection requirements is essential.

I just need to remove a broken IC from a board and solder the new one

I need a compact, single-fire line smart light switch designed around the ESP32-C3, strictly for residential use and housed in a PC-V0 enclosure. Because there is no neutral wire available the power stage has to ride on the leakage current, so I am counting on a proven AC-DC buck such as the Hi-Link HLK-PM01 (or similarly tiny module) and a reliable bypass-capacitor network that keeps the MCU alive even with very light loads attached. Switching must be silent and fast: think BTA16 (or comparable TRIAC) driven through an opto-isolated MOC3041 gate. Absolutely no mechanical relays are allowed. Behind the faceplate, the board should hide an HLK-LD2410 microwave radar sensor; its trigger will be combined with a capacitive interface that recognises multiple touch points on the glass front. Sp...

We are seeking an experienced Hardware Development Engineer to lead the end-to-end hardware development of a consumer-grade embedded system. The role involves system-level architecture, component selection, schematic design, PCB layout, and hardware validation in collaboration with the firmware engineer. The engineer must strictly adhere to the milestone plan and deliverables outlined below. Key Responsibilities: - System-level hardware architecture and design freeze. - Component selection (MCU/SoC, power ICs, storage interfaces, wireless modules). - Schematic design and PCB layout (high-speed + mixed-signal, EMI-aware). - Power integrity, grounding, shielding, and DFM/DFA compliance. - Prototype fabrication support and manufacturer Q&A. - Hardware bring-up support and validation with...