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I have a concept for a small control board that will act purely as a communication interface; the brain must be a microcontroller and every line on the board will ultimately speak SPI. I need the complete journey covered—from schematic capture through to a working prototype—and a simple companion application that can configure, send, and read data over that SPI bus. Hardware I want you to select an appropriate MCU, lay out the PCB, generate the BOM, and produce production-ready Gerbers. The board will only need the essentials: power regulation, the MCU, an SPI header, and whatever discretes are required for reliable signalling. Options such as UART or I²C might be added in a later revision, so leave enough pins and routing headroom for that future expansion. Firmware ...

Project Description: I am looking for an experienced electronics design engineer with a background in Nordic Semiconductor SoCs to develop a compact, high-efficiency PCB for a motion-tracking sensor node. Hardware Requirements: MCU: Nordic nRF52810 (BLE 5.0 SoC). Sensor: STMicroelectronics LIS2DW12 (3-axis accelerometer, ultra-low power). Memory: Winbond (1024Mb SPI Flash) to store 30 days of data at 12Hz. Power Source: CR2032 or CR2050 Coin Cell Battery (Design must be optimized for low peak current/high internal resistance). Antenna: Integrated PCB Trace Antenna or Ceramic Chip Antenna (with impedance matching network). Required Deliverables: Full Schematic: (PDF and source files). PCB Layout: 2-layer design, compact form factor (approx. 25x25mm to 30x30mm). Fabrication Files:...

Scope of Work & Deliverables 1. Circuit & Component Simulation Validate and simulate critical sub-circuits and component behaviors before moving to the layout stage (using LTspice, PSpice, or equivalent). Optimize the power delivery network (PDN), specifically the integration between the HLK Network module and the ESP32, ensuring proper noise filtering, decoupling, and voltage stability. 2. Schematic Review & Optimization Comprehensive audit of the existing schematic for signal integrity, protection circuits, and component ratings. Ensure proper implementation of hardware protection (e.g., TVS diodes, fuses, surge protection). 3. Thermal Simulation & Management (High Priority) Perform full Thermal Simulation (FEA/CFD) of the PCB and components under continuous 24/7 work...

I have a new consumer-electronics concept that needs a clean, single-layer PCB focused on reliable power-management. I’ll supply the functional block diagram and key electrical parameters; you translate this into a production-ready board. You’ll take the idea from schematic capture through to fabrication files, optimising track width, component placement, and thermal relief so the power stage remains cool and efficient. Standard tools such as Altium, KiCad, or Eagle are all fine—use whichever lets you work fastest without compromising quality. Deliverables I need at hand-off: • Editable schematic file • PCB layout file • Gerber, drill, and pick-and-place files ready for manufacturing • Complete, manufacturer-verified BOM with part numbers and f...

I am looking for an experienced electrical and control systems consultant to support a regional water-infrastructure upgrade, with the main focus on developing a complete switchboard design package. The project involves designing documentation for a switchboard that will support existing dam valve pit operations, including valve actuation, remote operation, and emergency operation. I need someone who can prepare issued-for-design drawings, electrical schematics, General Arrangement (GA) drawings, wiring diagrams, cable schedules, and supporting design documentation. The consultant should be able to develop a Bill of Materials (BOM), Input/Output (I/O) mapping, control philosophy, and Supervisory Control and Data Acquisition (SCADA) tag structure. The design package should be clear, practic...

I need a PCB design for a Graphene-based FET sensor readout system. The PCB should facilitate I-V characterization of GFETs by sweeping gate voltage (0-3V) and measuring current or resistance between source and drain. Key requirements: - Size: Medium (4x4 inches) - Interface: Connector terminals preferred - Component Inclusion: Partial component list available, open to recommendations Ideal skills and experience: - Expertise in PCB design - Experience with GFET or similar sensor technologies - Familiarity with I-V characterization setups - Knowledge of various electronic components and their integration

UPDATE >.. So the project brief has now changed ... and the new detail is below = we want a design in around 10 days MAX 1. A PCB - that is BLE - ESP32 based - the PCB will have to be round .. 2. The PCB will be recharging and have a USB C charging socket 3. The PCB will be powered by a 3.7 Volt Lithium Battery 4. The PCB will have a Switch to power on and off - momentary press 5. The PCB will have 1-3 Red Bright LEDS - positioned to give good light dispersion 6. The PCB will fit into a product and designed enclosure case . PLEASE NOTE - IMAGES ARE IDEAS and show SHAPE desire and size target ... and for reference

PCB Design Requirement Document Project: ARC LABS Smart Home Automation Controller About Us ARC LABS is an IoT and Embedded Systems company focused on developing commercial smart home and Industrial IoT products. We are looking for an experienced PCB designer who can help us develop a production-ready smart home controller PCB. ⸻ Project Scope Design a compact, reliable, and manufacturable PCB for a WiFi-based Smart Home Automation Controller. The PCB should be suitable for commercial production and comply with standard PCB manufacturing guidelines. ⸻ Hardware Requirements Main Controller * ESP32-C3 or ESP32-S3 (preferred) * USB Type-C programming interface * Auto reset and auto boot circuitry Power Supply * 230VAC to 5V isolated SMPS * 5V to 3.3V regulator * Over-voltage and ...

SKILLS:PCB Layout, EasyEDA, Electronics, Electrical Engineering, Embedded Systems, Circuit Design, Schematic Review, DFM, Gerber, BOM, Mixed-Signal Design DESCRIPTION: We need an experienced electronics / embedded hardware PCB designer for a confidential controller PCB project. The work must be done in EasyEDA. Important: full schematics, EasyEDA files, component details, connector mapping, mechanical constraints and architecture will NOT be shared publicly. Files will be shared only after NDA and IP Agreement are accepted. Project scope: 1. Review the existing schematics before PCB layout. 2. Identify schematic issues, missing values, footprint risks, connector or pin-mapping risks, power or grounding risks and manufacturing risks. 3. Prepare a correction list before PCB design starts....

Hi I will share the details with the shortlisted candidates. Thanks

I already have the full system architecture and every component selection locked in; what I need now is a seasoned PCB designer to turn that documentation into production-ready data using KiCad. The board will carry up to 10 A, so copper weight must be 2 oz or 3 oz and all plating details must follow the requirements outlined in the “” file I’ve shared. Because I specify the manufacturers for each part, the BOM has to reflect those exact sources with no substitutions. Apart from that, the focus is purely on translating my technical brief into clean, fabrication-ready output. Deliverables • KiCad schematic and PCB layout files • Optimised Gerber set for 2 oz / 3 oz copper traces • Excellon drill files for all through-holes • BOM and CPL that l...

I already have the full system architecture and every component selection locked in; what I need now is a seasoned PCB designer to turn that documentation into production-ready data using KiCad. The board will carry up to 10 A, so copper weight must be 2 oz or 3 oz and all plating details must follow the requirements outlined in the “” file I’ve shared. Because I specify the manufacturers for each part, the BOM has to reflect those exact sources with no substitutions. Apart from that, the focus is purely on translating my technical brief into clean, fabrication-ready output. Deliverables • KiCad schematic and PCB layout files • Optimised Gerber set for 2 oz / 3 oz copper traces • Excellon drill files for all through-holes • BOM and CPL that l...

I’m preparing the next phase of a regional water-infrastructure upgrade and need an Australian-based engineer or consultant to take full ownership of the switchboard design. While valve actuation and PLC/SCADA integration sit in the background, the switchboard itself is the primary focus and must be engineered to interface cleanly with those systems from day one. Scope of work You will develop the complete switchboard design package in line with Australian Standards for potable-water networks and the specific requirements of the local utility. That includes schematics, GA drawings, wiring diagrams, cable schedules, protection calculations, and a concise integration strategy that shows how the board will drive existing valve actuators and exchange data with the site’s PLC/SCA...

Hello, I need a schematic and 2-layer PCB layout for an automotive-grade Multi-Port USB Charger box. It's a hardware-only project (no firmware/software). Key Goals: Target Manufacturing Cost: Under €15 per unit (PCBA) for a 100-unit run. Component Selection: Must use low-cost, highly integrated standard ICs (e.g., Injoinic, Southchip) from LCSC/JLCPCB. PCB Size: Approx. 65 x 40 mm or smaller (Open-Frame). Mounting: M3 screw holes in the corners with a strict 6mm diameter keep-out zone. Interfaces & Topology Input: 12V/24V DC + 1x SMD USB port (Data-Input from car radio). Outputs ($90^circ$ Shrouded JST PH 2.0 connectors): Port 1 & 2 (USB-A): Shared Buck-Regler (QC3.0 / Apple 2.4A, max. 24W total). Port 3 (USB-C): Shared USB-PD 3.0 / QC3.0 combo controller. Port 4 (USB...

I’m upgrading the existing electrical panels and circuits in a small commercial space in Lihue, Kauai. Because this is an upgrade rather than a full new installation, the main hurdle is securing the proper commercial electrical permit from Kauai County. I need a Hawaii-licensed electrician who can put their license on the application, submit the paperwork, respond to any plan-check questions, and close the permit after final inspection. My crew will handle the physical work on site; your contribution is focused on the permitting process and any clarifications the county requests. Please include your Hawaii license number, your experience with the Lihue permitting portal, and an estimated turnaround time to get the application filed. Deliverables • Approved commercial elect...

ESP32 controller impedance matching multilayer design signal integrity analog signal design buck converter 24VDC input supply 5V and 3.3V power rails Relay outputs ADC and DAC interfaces Mixed-signal design 2-layer PCB

For an R&D platform based on the SAM E54 Xplained PRO, we would like to make several (starting with 6) plug-in boards. The boards should be placed on one of the 3 headers of the Xplained. We have divided boards into 3 categories. Power supply, DCD converters (±48V or +40V or ±24V, 3V3, VREF 2.5, 1.25V, etc.). Driver OUTPUT User Interface and related For the first 4 boards (option 1 and 2), there are already schematics that can be used. These are already R&D PCBA files in use, but now we want to split them into partial boards as well. User Interface boards could be very simple, like a button, LED, header, screw terminal, etc. On request, new plug-in boards will need to be designed and created. All of this must be done with a program that is comp...

Our development team in Ahmedabad is moving into the next round of builds and I need clean, reliable power supply systems engineered from the ground up. The work ranges from choosing the right topology for each application through to producing fully documented schematics and layout drawings. Intermediate-level Microsoft Visio skills are essential because every diagram, layer and cross-reference will be handed straight to production and compliance for approval. You will interpret our electrical requirements, size components, run efficiency calculations, and capture every decision inside Visio so nothing is lost between design and assembly. Expect to collaborate with our in-house engineers by video call and chat; strong, clear communication will keep iterations fast and productive. Deliver...

Conduct daily 1-hour Electrical AutoCAD training sessions for 35 students, covering electrical drafting, schematic diagrams, panel layouts, cable routing, and industry-standard CAD practices. Prepare lesson plans, practical exercises, assignments, and assessments while providing hands-on guidance to improve students' AutoCAD proficiency and technical drawing skills. Monitor student progress, address technical queries, maintain training records, and ensure learners achieve the required competency in Electrical AutoCAD design and documentation.

We are developing a portable, handheld research instrument that combines two measurement modalities in a single pen-form device: 1. ELECTRICAL IMPEDANCE SPECTROSCOPY (EIS) 4-wire (tetrapolar) configuration. Frequency sweep 100mHz to 200kHz. Phase angle resolution ≤ 0.1°. Impedance range 10Ω to 10MΩ. Precision analog front-end IC (SPI interface). Shielded cable connector for external probe (Lemo or circular DIN, IP44). 2. OPTICAL SPECTROSCOPY Hamamatsu C12880MA MEMS spectrometer (SPI). Multi-wavelength LED driver: 4 channels (405 / 530 / 625 / 850 nm), sequential, PWM-controlled, current-regulated ±1%. SMA905 fiber optic connector. This project centres on a single-board solution that brings electrical impedance spectroscopy and optical spectroscopy togethe...

I need an analog circuit designed from the ground up and then laid out on a production-ready PCB for a consumer-electronics product. The finished board must operate as a single, unified control unit that fits cleanly inside a dedicated enclosure, so component placement and overall footprint matter as much as the schematic itself. I need an integrated control panel which houses two subsystems. One is water pumping line and the second is uv disinfection line. The circuit diagram for both subsystems will be provided . Kindly provide an integrated one and a pcb design for the same.

I have already worked out the detailed mechanical layout for a very small control panel that sits inside a tubular enclosure. At its heart are two single-pole, eight-position rotary switches that will handle device control signals, a 1 A fuse block, a 1 A charging connector, a terminal block, and a USB-C port. Because space is tight the electronics must be split across two round boards, each only 1.25 in (≈ 32 mm) in diameter, with a short interconnect cable running between them and on to the rest of the assembly. What I need from you is the complete electrical design package so the boards can go straight to fabrication and assembly. The operating temperature peaks at 85 °C, so every component, connector, fuse holder and cable spec has to meet or exceed that rating. Deliverab...

I’m building a two-layer, donut-shaped PCB around ESP32-WROOM-32U. The outer diameter must not exceed 92 mm, the inner cut-out must remain at least 54 mm, leaving the 19 mm wide ring as our only real estate. Please respect the antenna keep-out zone on the outer edge of the module. Inside that narrow ring we still need to route: Quectel L80 GPS on UART, a MAX98357A audio amp over I²S, a DS3231 RTC on I²C, an SPI-driven MicroSD slot, and a single raw copper touch pad positioned on the perimeter. Power comes from a USB-C connector that sits on the edge; horizontal or vertical placement is fine as long as it follows the board outline and brings out both 5 V and a regulated 3.3 V rail. You may work in EasyEDA or KiCad—either format is acceptable. Please apply the board ...

I need a PCB design for a mobile charger with the following specifications: - Fast charging capability - Universal compatibility - Compact and rectangular shape Ideal Skills and Experience: - Experience in PCB design - Knowledge of fast charging technologies - Familiarity with universal compatibility standards Please provide your portfolio and relevant experience.

RFID Hardware Product Development (NDA Required) We are looking for an experienced Hardware Engineer / RFID Specialist to design and develop a custom RFID-based hardware product. The product involves tracking and measuring physical expansion, dimensional changes, or movement of a tagged object over time using RFID and related sensing technologies. At this stage, only high-level information is being disclosed. Detailed project specifications, use cases, technical requirements, and commercial applications will be shared only with shortlisted candidates after execution of a Non-Disclosure Agreement (NDA). Required Skills RFID Technology (HF, UHF, NFC, Active/Passive RFID) Embedded Systems Hardware Product Design PCB Design Sensor Integration IoT Hardware Development Prototype Development Prod...

我正在启动一款面向家庭环境的小型机器人项目，目前处于“初步需求”阶段，核心目标是让它能够自然地对话与陪伴家人。机器人需要具备稳定的语音识别能力，并在接收到指令后以三种方式做出回应：说话反馈、执行简单动作以及在屏幕上显示信息。 从技术角度来看，整机需要基于自主设计的 PCB，主控可采用 ARM 或 RISC-V 架构的嵌入式方案；还要集成基本环境传感器，并预留扩展接口以便后续添加更多模组。我希望你能主导硬件原理图与 PCB 设计，完成底层固件的快速原型，实现与传感器、语音麦阵列及小尺寸显示屏的驱动联调，并给出可靠的硬件测试方案。熟悉 AI 加速器或边缘计算模组的经验会非常加分，因为日后有计划将部分语音与推理任务本地化。 交付物需包括： • 机器人硬件整体架构图 • 可生产的 PCB Gerber 与 BOM • 嵌入式固件原型（含语音识别接口、动作与显示控制逻辑） • 简易测试工装与测试用例文档 • 开机演示视频或现场演示，证明设备能在家庭场景下完成对话并做出多模态回应 我期待与你一起把这位“家庭伙伴”从概念变成可握在手中的真实设备。

I want to create a clean, classic-looking digital watch that quietly packs solid fitness features behind a minimal façade. The styling should stay timeless—thin case, simple dial, neutral colors, no flashy bezels—yet the internals must handle three core tasks: • Continuous heart-rate monitoring • Accurate step counting throughout the day • Automatic sleep tracking each night Your job is to design and prototype the complete device, covering electronics, firmware, enclosure and strap geometry. Low-power components, efficient firmware and a straightforward two-button or touchscreen-tap interface will keep the user experience elegant and the battery life sensible. Please deliver: • Schematics, PCB layout and full BOM • Embedded code with c...

I already have working Arduino- and ESP32-based boards; what I need now is a reshape of the boards to a custom shape and should have little effect on the traces. you’ll focus on redrawing the board outline, adjusting keep-outs, and nudging traces so manufacturing remains trouble-free. I will supply the current schematic, board file, and a vector image of the geographic contour. You return updated design files (Altium or KiCad preferred, plus universal Gerbers) and a quick 3D render so I can visualize the new silhouette. Acceptance criteria: • Board outline matches the supplied country & continent vector within ±0.2 mm • No DRC errors at standard PCB thickness settings • Gerbers pass JLCPCB pre-check without modification If this sounds straightfo...

I am looking for an electrical engineer to design and build a functional 4G GPS tracker. The deliverables should include both the design documentation (schematics, diagrams, etc.) and a working prototype. The project must be completed within one month. Ideal skills include expertise in electrical engineering, GPS technology, and 4G communication systems.

I need a complete hardware design for an ESP32-C6 Dual CAN carrier board that will sit at the heart of a new communication device. The board must do three things: • Data logging – capture and store CAN messages locally. • Wireless communication – push that data over Wi-Fi 6 / BLE without relying on an external gateway. • Sensor integration – leave headers or footprints that let me tap additional lines and inject CAN messages from attached sensors. At this stage I am looking for a finished set of design files: schematic, clean PCB layout, BOM with part numbers that are actually in stock, and the usual Gerber/ODB++ outputs so my fabricator can run a quick prototype. You’re free to work in KiCad, Altium, or another mainstream tool as long as the fi...

Only verified and USA based freelancers : Looking for Prototype Builder – Custom Automotive LED Light Strip Project: Custom Automotive LED Light Strip Prototype I'm seeking an experienced electronics engineer, LED specialist, or prototype builder to help develop a custom automotive LED light strip for a vehicle project. Project Details: Flexible or rigid LED strip designed specifically for automotive use Must be durable, vibration-resistant, waterproof (IP67+), and heat-tolerant Features may include RGBW, sequential effects, app/Bluetooth control, or custom beam patterns (details to be finalized) Focus on high-quality components suitable for automotive environment What I Need: Help with design, PCB layout, component selection, firmware, prototyping, and initial testing Someone ...

I’m running a Teensy 4.1 that delivers a 0 – 3.3 V square wave at 80 kHz. For my signal-transmission stage I must boost that logic-level waveform to a clean +6 V amplitude, powered from an existing 13 V rail. Because the downstream chain mixes analog and digital circuitry, frequency stability, waveform accuracy, and strong noise immunity are all critical; edges need to stay sharp without ringing or overshoot, duty cycle must remain intact, and added jitter should be negligible. Here’s what I’d like from you: • A proven conversion topology (discrete driver, high-speed op-amp, gate driver, or any suitable approach) that takes 0 – 3.3 V in and produces a solid +6 V square wave at 80 kHz. • Schematic with full component values, part numbers, and a co...

Project Title: Design a Custom Jukebox Controller PCB (Drop-In Replacement) Project Overview I am developing a modern Linux-based digital jukebox platform and require a custom controller PCB to replace an obsolete legacy controller board. The original board is available and can be supplied to the successful freelancer for measurement and connector identification. The objective is not to copy the original electronics. The objective is to design a modern replacement board that fits the same physical location, uses the existing wiring harnesses and provides the functionality required by the new software. Requirements The replacement PCB must: * Match the physical dimensions of the existing board. * Use the same mounting hole locations. * Position connectors so the existing wiring harne...

We are developing a portable, handheld research instrument that combines two measurement modalities in a single pen-form device: 1. ELECTRICAL IMPEDANCE SPECTROSCOPY (EIS) 4-wire (tetrapolar) configuration. Frequency sweep 100mHz to 200kHz. Phase angle resolution ≤ 0.1°. Impedance range 10Ω to 10MΩ. Precision analog front-end IC (SPI interface). Shielded cable connector for external probe (Lemo or circular DIN, IP44). 2. OPTICAL SPECTROSCOPY Hamamatsu C12880MA MEMS spectrometer (SPI). Multi-wavelength LED driver: 4 channels (405 / 530 / 625 / 850 nm), sequential, PWM-controlled, current-regulated ±1%. SMA905 fiber optic connector. This project centres on a single-board solution that brings electrical impedance spectroscopy and optical spectroscopy togethe...

Lead Hardware/Firmware Engineer: ESP32-S3 + AI Voice Integration for Smart Companion About the Project: Beast Buddiez We are developing a revolutionary physical AI companion device designed to help users become their best selves. This isn’t a standard pre-recorded toy; it is an intelligent, adaptable entity housed in a physical figure. At its core, the custom agent is programmed to encourage self-improvement, build confidence, and prompt deeper thinking. It features full adaptability, as it can be a fun, playful friend when desired, but the AI is designed to recognize when it is time to pivot, naturally initiating conversations about grander concepts (like space, science, or personal goals) to expand the user’s worldview. What We Are Looking For We are currently finalizing o...

I'm looking to create a prototype for a portable soldering iron specifically designed for electronics repair. The ideal candidate should have experience in product design and prototype development. Key requirements: - Lightweight and handheld - Compatible with 12v Milwaukee battery - Replaceable tips Ideal skills and experience: - Background in tools/electronics - Experience with battery-powered devices - Prototyping skills I have the components i want to use and design of product, at next faze to make it real life

Project Title: Electrical Engineer / EV Charging System Engineer for Mission EV Station Startup Project Overview: I am developing a startup called Mission EV Station, a hybrid renewable-energy EV charging infrastructure project. Current Requirement: I am looking for an experienced Electrical Engineer, Power Electronics Engineer, or EV Charging Engineer to help validate and design the technical architecture of a smart EV charging booth. Concept: The charging booth should provide a user experience similar to a petrol station booth. Customers should be able to: • Select a specific charging amount (₹100, ₹500, etc.) • Select charging based on energy units (kWh) • Charge until the vehicle battery is full • Support multiple EV types and charging standards • Displa...

我正准备推出一款壁挂式迷你洗衣机，需要从零到一的整体产品设计方案。目标设备必须能全自动完成洗涤与甩干，支持壁挂安装，并预留智能控制接口（如 Wi-Fi 或 蓝牙）。 本项目包含三大板块： • 外观设计：提供外观概念草图、3D 外观模型及配色建议，确保小巧时尚、符合浴室或阳台环境。 • 机械设计：完成内部传动、减震、排水与挂墙固定结构的机械方案；输出详细3D 装配模型、关键部件强度与运动仿真报告以及可制造的工程图。 • 电路设计：根据全自动洗涤流程与智能控制需求，提交电气原理图、PCB 布局、元件清单（BOM）、传感器与执行元件选型以及安全防水设计要点。 我希望交付物能够直接用于后续打样与量产沟通，所以请在方案中注明主要材料（如塑料外壳配不锈钢内筒）的可行性和成本影响，并标出所有关键尺寸、公差和接口位置。 有小型家电或自动化设备经验、熟悉洗衣机行业标准与防水等级设计的工程师更受欢迎。 请在提案里简单说明： 1. 您以往相关项目案例或作品链接 2. 预计交付周期与阶段划分 3. 计划使用的软件工具（SolidWorks、Creo、Altium Designer 等） 期待与您合作，共同把这款壁挂迷你洗衣机从概念变为可落地的商品。

Diode/LED Tester. I will supply BOM and Layout. This is my first circuit card. - Derating: move to components that are derated (e.g., resistors at ≥60% rated dissipation when practical; capacitors with voltage margin).  - Capacitors: prefer electrolytic/solid polymer or MLCC X7R for stability; avoid low-stability dielectrics where long-term drift matters. Increase voltage rating (e.g., use 2× expected voltage where space/cost allow).  - Resistors: use metal-film or MELF where low tempco is important; increase power rating or spread dissipation (split resistor network) for hot spots.  - Semiconductors: choose devices with higher Vce/Vrrm margins, higher junction-to-ambient thermal resistance margins, and robust SOA for likely transient currents. Prefer packaged par...

Developmental of foc driver for bldc motor (star and delta) winding with 1 POC pcb development with smd componemts for discussed size for using it in actuator • Speed control • Torque control • Position control What I expect from you • Well-structured, thoroughly commented firmware written in C/C++ and ready to compile in STM32CubeIDE • Clarke & Park transforms, SVPWM generation, current/voltage loop handling, and the outer PID loops for speed, torque, and position. • magnetic encoder resolution, minimum 18 or 19 bit resolution and 21 bit if possible (that good) • Clear configuration points so I can retune gains for different motors. • A brief README explaining setup, pin mapping, and how to call your API from my application layer...

I am developing a compact rotary actuator for a robot joint and need a full Field-Oriented Control (FOC) driver that I can integrate straight into the mechanical assembly. Core requirements • Closed-loop control modes: speed, torque and position must all be selectable in real time. • Feedback: magnetic encoder with at least 18-bit resolution; 21-bit support is highly desirable. • Interfaces: native RS485 and CAN, both able to stream status data and accept commands. • Safety: built-in over-current, over-temperature and short-circuit protection. What I expect to receive 1. Hardware: schematic, BOM and PCB layout ready for manufacture. 2. Firmware: well-commented source code (C / C++ preferred) implementing the FOC algorithm, encoder handling and both communication stack...

We are developing a portable, handheld research instrument that combines two measurement modalities in a single pen-form device: 1. ELECTRICAL IMPEDANCE SPECTROSCOPY (EIS) 4-wire (tetrapolar) configuration. Frequency sweep 100mHz to 200kHz. Phase angle resolution ≤ 0.1°. Impedance range 10Ω to 10MΩ. Precision analog front-end IC (SPI interface). Shielded cable connector for external probe (Lemo or circular DIN, IP44). 2. OPTICAL SPECTROSCOPY Hamamatsu C12880MA MEMS spectrometer (SPI). Multi-wavelength LED driver: 4 channels (405 / 530 / 625 / 850 nm), sequential, PWM-controlled, current-regulated ±1%. SMA905 fiber optic connector. This project centres on a single-board solution that brings electrical impedance spectroscopy and optical spectroscopy togethe...

I am developing a compact rotary actuator for a robot joint and need a full Field-Oriented Control (FOC) driver that I can integrate straight into the mechanical assembly. Core requirements • Closed-loop control modes: speed, torque and position must all be selectable in real time. • Feedback: magnetic encoder with at least 18-bit resolution; 21-bit support is highly desirable. • Interfaces: native RS485 and CAN, both able to stream status data and accept commands. • Safety: built-in over-current, over-temperature and short-circuit protection. What I expect to receive 1. Hardware: schematic, BOM and PCB layout ready for manufacture. 2. Firmware: well-commented source code (C / C++ preferred) implementing the FOC algorithm, encoder handling and both communication stack...

The project is a VLSI CMOS circuit layout design for an 8-bit SAR ADC system. I already have the schematic design completed, and I need the physical transistor-level layout implementation based on that schematic. Details of the project: • Type of design: VLSI IC Layout / CMOS Layout • Project scope: Layout design of DFFSR and SAR-related blocks from the provided schematic • Reference materials: I already have the schematic and partial layout references • Software preferred: Cadence Virtuoso • Required work: * Transistor-level layout * DRC clean layout * LVS verification • Detail level required: Full custom layout suitable for academic project submission • Deliverables needed: * Layout files * DRC/LVS verified results

> I am the founder of SEDULOUS, providing Industrial Automation, Electrical & Instrumentation Engineering, PLC/SCADA/DCS Support, Site Installation & Commissioning, Control Panel Testing, FAT/SAT Support, Technical Documentation, and Skilled Manpower Supply Services. > > Our expertise includes: > > * PLC Programming (Siemens, Allen-Bradley, Schneider, Delta, etc.) > * SCADA & HMI Development > * DCS Engineering Support > * Electrical & Instrumentation Design > * Site Installation & Commissioning (I&C) > * Industrial Networking & Communication Systems > * Technical Documentation & SOP Preparation > * Project Engineering & Shutdown Support > * Skilled Engineering Manpower Supply > > We are committed to deliverin...

Role Overview We’re seeking an Industrial Circuit Board Designer to develop robust, manufacturable PCBs for harsh industrial environments. You’ll take schematics from concept to production-ready boards that handle high current, EMI, vibration, and temperature extremes. Think factory automation, power systems, IoT sensors, or control units - where failure isn’t an option.

I have a working printed-circuit board that now needs a round of updates. Once we start, I will share the current design files and a short change log; you will then adjust the layout, check the schematic for consistency, and generate fresh fabrication outputs. Typical tasks could involve adding or removing parts, tightening or rerouting traces to meet new performance goals, or tweaking footprints so every component drops cleanly onto the board house’s panel. Whichever combination applies, the end result must pass DRC/ERC without errors and be ready for production. Please return the updated CAD source (Altium, KiCad, or Eagle—use the tool you are most comfortable with), a revised BOM, and Gerber/ODB++ files along with pick-and-place data. A brief change report highlighting...

Design a Low-Cost DC Voltage Detection Circuit and PCB in EasyEDA — 120V to 1000V DC **Description:** I need an electronics freelancer to design a simple, functional, low-cost, and protected circuit capable of detecting **DC voltage from 120V to 1000V DC**. When the circuit detects voltage within this range, it must activate a **relay output**. The relay contact will be used to switch or control an external circuit/load of up to **1000V DC and 100mA**. The project must be designed in **EasyEDA**, including both the **schematic circuit** and the **PCB layout**. The circuit should also include a **LED indicator**, if possible, to show when voltage is detected or when the relay is activated. **Main requirements:** * Design the schematic in **EasyEDA** * Design the PCB layout in **...