Схемотехніка Jobs

This project calls for a clean, production-ready multilayer PCB for a multi-mic prototype card for use in development. The schematic is done and an initial attempt at component layout has been made, both in easyeda pro. schematic pdf attached. Due to clock and signal fan-out constraints, and power supply layout constraints, need help in completing the actual PCB design. The board has 32 PDM microphones (x,y coordinates fixed) whose data are converted to TDM and sent off board via connector. The TDM clocks come in on the same connector. The board has a 3.3V buck-boost sourced with 5V from a battery connector. The 3.3V is used to power some ICs and is input to a 1.8V LDO for dual-powered ICs. Please apply your preferred professional tool—Altium Designer, KiCad, or Eagle are all acce...

Necesito un modelo funcional en TinkerCAD que represente una estación automatizada de control de nivel de tanque. El sistema debe: • Utilizar un sensor de presión para leer el nivel. • Activar un relevador que encienda una bomba (motor) cuando el nivel baje del umbral configurado. • Mostrar el estado mediante un LED RGB: rojo cuando la bomba está activa, azul cuando está inactiva y verde cuando el nivel se encuentra dentro del rango deseado (modo espera). Entrego el umbral inicial, pero quiero que quede documentado dónde ajustarlo en el código Arduino. El proyecto final debe incluir: 1. Esquema de cableado completo y limpio dentro de TinkerCAD. 2. Código Arduino claramente comentado. 3. Enlace público al c...

Need PHD guidance for student of VLSi on Optimization of Hetro junction Tunnel field effect Transistor for nano VLSI applications. From identifying Research Gap to final results. Work to be carried out in Silvaco Tcad

I'm seeking an experienced engineer to design a high voltage (HV) module. The module will convert 12V DC to 15kV with a current under 500 microamperes. Key Requirements: - Input: 12V DC - Output: 15kV - Current: Under 500µA - Voltage Regulation: Moderate precision - Form Factor: Custom size to fit specific industrial machinery Ideal Skills and Experience: - Expertise in high voltage design - Experience with voltage regulation techniques - Proficiency in custom electronics design - Background in industrial machinery applications Please provide samples of similar projects you've completed.

Job Title : Electrical Designer Needed for 3 kW, 415V 3-Phase VFD Panel Design (AutoCAD) Job Description Overview : looking for an electrical designer to create a complete engineering design for a 3 kW Variable Frequency Drive (VFD) control panel FOR FORWARD AND REVERSE MOVEMENT OF MOTOR . This is a one-time, fixed-price project. Project Scope : The designer will create the electrical schematics and panel layout based on these precise specifications : Motor Power Rating: 3 kW Input Supply: 415V, 3-Phase, 50HzControl System: Dual control logic. The panel must be operational via local door-mounted pushbuttons/potentiometer AND via a remote terminal/signal interface (Local/Remote selector switch logic required).Braking Requirements: Include a Dynamic Braking Resistor (DBR) circuit in the de...

Assalam o alaikum, I am looking for Electrical & Electronics Engineers from PAKISTAN to be a part of my team and work on multiple tasks related to Circuit design, Embedded Systems, Control Systems, Power Systems etc. Applicants should have strong expertise in following softwares' Proteus Multisim TinkerCAD MATLAB/SIMULINK Applicants should have good expertise in writing short and long reports e.g. Final Year Project Reports. You should be well aware of Plagiarism Policies for writing technical documents.

I’m upgrading my house to a fully connected smart-home and need an experienced electrician who is comfortable with residential automation from the breaker panel right through to the phone app. Scope of work • Smart lighting • Security systems (cameras, sensors, alarms) • Climate control (thermostats, smart vents, HVAC integration) • Any additional automations you believe will improve convenience or energy efficiency The job starts with a review of my current wiring and a clear plan for how the new low-voltage and mains runs will coexist safely. I expect neat cable management, labelled circuits, and compliance with all local codes. You’ll specify the hubs, switches, relays, and controllers—whether that ends up being KNX, Lutron, Zigbee/Z-Wave,...

Overview: Qgen Engineering is a US-based hardware and software company. We're looking for an experienced electrical engineer to perform an independent design review of four board designs before we commit to fabrication and volume builds. This is a review engagement — no layout, firmware, or redesign work required. Boards in scope: - Carrier board — carrier for a commercial ARM SODIMM compute module (TI AM62P-class, 1.8V-only I/O domain). Includes a MIPI-DSI display interface with capacitive touch, switched peripheral rails, Ethernet, USB, RS-485, I2C peripherals, PWM/tach fan control, and a JTAG/UART debug header. 24V input. - Power board — system power input and distribution. - Sub control board — a control board driving inductive and high-voltage loads from ...

Potrzebuję funkcjonalnego prototypu niewielkiego systemu, który bezprzewodowo poinformuje o obecności osoby w pomieszczeniu. Co musi zrobić urządzenie • Czujnik ruchu PIR, zasilany wyłącznie baterią, wykrywa obecność. • Wskaźnik LED przy drzwiach – również zasilany z baterii – automatycznie zmienia kolor, gdy czujnik coś wykryje lub gdy pomieszczenie znów jest puste. • Między elementami nie może być żadnego okablowania; komunikacja ma być w pełni bezprzewodowa. Kluczowe wymagania • Bardzo niski pobór energii – zależy mi na długiej pracy na jednym komplecie baterii. • Stabilna, odporna na zakłócenia łączność (BLE, Zigbee, Sub-GHz lub inne rozwiązanie, które zaproponujesz). • Kompaktowe wymi...

Hi,I am building the DefendX Tactical Smartwatch. I need an expert hardware engineer to design the board completely from scratch—starting with component selection and schematics, all the way through 4-layer PCB layout and physical lab testing. Project Requirements (42×42 mm, 4-Layer Board): Core: ESP32-S3 (Compact module like the MINI series). Radios: Wi-Fi/BLE, Sub-GHz LoRa (e.g., SX1262), and GPS (e.g., SIM68M). Sensors: Biometrics (HR/SpO2 + Temp) placed wrist-facing on the bottom layer, plus a 9-axis IMU and Compass. Power & Storage: LiPo battery management (with a central cutout pocket on the PCB for the battery) and SPI NOR Flash. Your Scope of Work: BOM Selection: Pick reliable components that are actively in stock at JLCPCB/LCSC. Schematics: Design the ...

I'm seeking an experienced PCB designer to create a complex, multi-layer schematic for an industrial radio. The schematic will incorporate analog, digital, and mixed-signal components. Key requirements: - Design complex, multi-layer PCB schematics - Incorporate analog, digital, and mixed-signal components - Experience with industrial equipment is a plus - Proficiency in PCB design software (e.g., Altium, Eagle) Ideal candidates will have a strong background in electronics and a proven track record in similar projects. Please provide samples of previous work.

I’m building a compact board whose sole mission is clean, reliable power distribution. I already have the system requirements mapped out at a high level; now I need an experienced PCB and embedded engineer who can turn those requirements into production-ready hardware and firmware. The job covers the full design flow: capturing the schematic, creating the PCB layout with attention to thermal paths and EMI, selecting components for efficiency and availability, and writing the embedded code that supervises voltage rails, fault flags, and soft-start logic. I expect good engineering practices—proper net-naming, clear documentation, and design files that open without issue in KiCad or Altium. Deliverables • Complete schematic (PDF + source) • PCB layout files and Gerbe...

My living room and bedroom are ready for an upgrade with profile lighting that delivers a bright, vibrant feel. I already have a few sketches and reference photos, but I still need a professional eye to translate those ideas into a safe, code-compliant plan and then carry out the full installation. Here’s the flow I have in mind: • Collaborate with me on the final layout, channel placement and dimmer/switch positions so the light washes evenly across walls and ceilings without glare. • Advise on the best aluminium profiles, LED strips (colour temperature 4000-4500 K), drivers and connectors to match the desired brightness. • Supply, install and neatly conceal all wiring, making sure both rooms run on separate, protected circuits. • Test every run, adjus...

Project Title 800 V / 400 A Pulsed Constant-Current Power Supply – Design Team Project Overview We are seeking an experienced power electronics team to design an 800 V / 400 A pulsed constant-current PSU, including full system architecture, simulation, schematic design, PCB layout, and EMI/EMC compliance. This is a high-power HV pulsed system requiring proven expertise in SMPS design, SiC/IGBT power stages, magnetics, high-current PCB/busbar engineering, and EMI/EMC mitigation. A multi-disciplinary team is strongly preferred. --- System Requirements - Input: 3-phase, 380 VAC, 50 Hz - Output: Pulsed constant current - Max voltage: 800 V - Max current: 400 A - Load: 2 Ω - Current accuracy: ±1% - MCU-based pulse control - Controlled rise/fall tim...

I’m upgrading a material-enrichment line that includes tag extraction, floc separation and a draft bill of materials. The immediate goal is to translate what I already have into a fully workable enrichment process: confirm the flow, size and specify each piece of equipment, and document operating parameters so procurement and commissioning can begin right away. You will: • Validate and optimise the enrichment stage, integrating tag-extraction and floc-handling steps. • Deliver a process flow diagram, refined equipment list/BOM and concise operating guidelines suitable for hand-off to my purchasing team. I’m moving fast, so only reply if you can start immediately. Point me to past work on comparable enrichment or separation systems—those references will decide ...

need a DDR4 PCB layout designer. The job covers the full physical layout, tuned for high-speed signal using Mentor tool PADS PCB.

I need a full EasyEDA project—schematic and routed PCB—for a tiny Atmega32U4 board that lets a computer drive a single external LED through a 3-pin XH-JST connector (GND / 5 V / LED). The board must talk and be programmable over a horizontal USB-C port and should remain as small as practical without sacrificing good layout practice. Core requirements • EasyEDA schematic using the Atmega32U4, including crystal or resonator, USB-C E-Markers (where needed), ESD protection, boot-cap circuitry and the standard reset network. • Break-out to one XH-JST-3 plug clearly silkscreened with the GND, +5 V and LED symbols. • Primary power supplied by USB-C 5 V rail. • Firmware that gives basic functionality: detect USB power, expose the MCU as a simple USB HID to ...

Salut, Caut electrician autorizat pt dimensionare,transport, instalare sistem fotovoltaic pt o casa la curte cu 2 corpuri de cladire cu un consum zilnic in medie de 16kwh Vreau un sistem ales de dumnevoastra cumparat si transportat si instalat(off-grid) tot de catre dumneavoastra cu tot ce trebuie. Stau la casa la curte Bucuresti,Sector 1. Ma gandesc ca la acest consum un Invertor monofazat de 5-8KW si o baterie de 15-16kw(LiFePO4, 48V) ar fi cam de ajuns Panouri(450W - 550W per panou) tot vreo 25 bucati(dar vedem cate intra pe o terasa de 40 mp avand balustrada si gresie situata la etajul 1). Distanta dintre panouri si tabloul electric(smart CEM1) variaza intre 10 si 5 m depinde de unde o masori. Vreau sa fie vara folosita intens deoarece terasa este foarte insorita dar cu back-up pe ...

Project : to design Battery charger and BMS(Battery management system) Existing Battery Configuration 2 × 12V, 100Ah Sealed Lead Acid (SLA/VRLA) batteries connected in series (24V DC system) Scope of Work We require a production-ready solution comprising an intelligent battery charger and BMS for continuous industrial operation. Battery Charger (Intelligent 24V SLA battery charger) 1.⁠ ⁠Automatic Bulk, Absorption & Float charging 2.⁠ ⁠Configurable charging current 3.⁠ ⁠Temperature-compensated charging 4.⁠ ⁠Over-voltage, over-current and short-circuit protection 5.⁠ ⁠Reverse polarity protection 6.⁠ ⁠High efficiency design suitable for 24×7 operation Battery Monitoring & Protection  1.⁠ ⁠Individual battery voltage monitoring  2.⁠ ⁠Total battery bank voltage monitori...

We are developing an industrial AI camera system based on the Rockchip RV1126B processor and onsemi AR0234 global-shutter image sensors. We want to use a ready-made RV1126B SOM/core board and develop a custom carrier PCB. Our internal team will concentrate on AI and application software. The freelancer/company must handle hardware design, PCB layout, board bring-up and low-level Linux camera integration. The system will support: Two GMSL2 camera inputs One local AR0234 MIPI CSI-2 camera Three simultaneous camera streams Isolated industrial trigger input Gigabit Ethernet for compressed preview and communication 3.3 V TTL UART service/debug connection 12–24 V DC power input Proposed Architecture RV1126B SOM/core board Minimum 2 GB RAM Minimum 16 GB eMMC MAX96716A dual GMSL2 deserialize...

Repair receivers, turntables , speakers and other related stereo components

I'm seeking an experienced circuit designer to create a digital control system for a Bi Color LED Matrix. The core component of this system will be a microcontroller that can add good sound quality designed by software in which each LED will have a sound frequency. Key Requirements: - Design of an LED Matrix of 25 columns and 6 rows - Integration of a microcontroller and some quality sound. - Application focused bluetooth control systems iphone and android Ideal Skills and Experience: - Expertise in digital circuit design - Proficiency with microcontrollers - Experience in control systems for bluetooth iphone , android applications. Please provide examples of similar work.

I have an ESP32-D dev board and three unused PAA5100JE optical-flow sensors. I only need to bring one online first, confirm it streams clean motion data, then replicate the solution for the other two. What I already have • A sketch that compiles but never sees the sensor • All parts on hand, breadboarded and powered • Standard Arduino IDE installed on my end for quick testing What I need from you within the next couple of hours 1. Corrected or freshly written code that initializes the PAA5100JE, verifies it over SPI, and outputs X/Y delta values on the serial monitor at 115 200 bps. 2. A clear wiring diagram (hand-drawn is fine if neat, Fritzing/KiCad even better) that shows every pin between the ESP32-D and the sensor, including power, ground, CS, MISO, MOS...

Project Brief: ESP32-P4 + ESP32-C6 HDMI CEC & IR Controller Board 1. Project Overview Seeking an experienced PCB designer to create a custom, compact controller board designed to manage media devices via HDMI CEC and external Infrared (IR). The architecture relies on a dual-MCU setup: an ESP32-P4 acting as the primary application processor (handling HDMI protocols and IO) and an ESP32-C6 serving as the wireless (Wi-Fi/BLE) network co-processor. 2. Core Processing & Architecture * Main Application Processor: ESP32-P4. * Network Co-processor: ESP32-C6. * Interconnect: Implement a high-speed communication bus (e.g., SDIO or SPI) between the P4 and C6 for network bridging. * Debugging (Optional but recommended): Expose standard JTAG test points or a micro-header for both MCUs to...

We are seeking a Senior Electrical Designer to support the design of advanced manufacturing facilities, including semiconductor manufacturing plants, data centers, and other high-tech industrial projects. This role is responsible for producing detailed electrical designs using AutoCAD and Revit MEP, including power distribution, lighting, fire alarm, and communications systems. The Senior Electrical Designer will coordinate closely with engineers and design leads while providing technical guidance and mentorship to junior designers. Responsibilities Prepare electrical designs and construction documents for advanced manufacturing and industrial facilities. Develop layouts, sketches, 2D drawings, and 3D models using AutoCAD and Revit MEP. Design electrical power distribution, lighting, fir...

I need a compact, production-ready PCB that accepts a single DC input and delivers three regulated rails—24 V @ 12 A, 12 V @ 12 A and 5 V @ 10 A—for an industrial-automation control panel. The board must keep those rails alive for roughly 5-10 minutes by automatically switching to a lithium-ion battery pack whenever the main supply drops. An onboard 8051 microcontroller will continuously sense input power, drive status LEDs and, when a brown-out is detected, shut the rails down in a defined sequence after the battery grace period. I will flash the MCU here, so please include well-commented source, compiled HEX and a simple serial or GPIO interface for configuration. Electrical safeguards are critical in the factory environment, so integrate robust overcurrent, overvoltage...

I’m building a new circuit in Autodesk Eagle and want an experienced Eagle user to look over my schematic, walk me through any weak spots, and suggest best-practice improvements before I move on to the board stage. The goal is a rock-solid schematic that is ready for PCB layout, free of hidden ERC errors, and organised with clear net labels, correct device libraries, and sensible part choices. Here’s what I need from you: • A shared review session (screen-share or annotated feedback) to examine the current Eagle *.sch file. • Actionable recommendations on component placement, net naming, and library management. • Corrections or edits made directly in the schematic file, returned to me with brief inline notes so I understand every change. • A short...

Busco apoyo de un ingeniero de hardware con sólida experiencia en diseño de circuitos, concretamente digitales. Compartiré los requisitos funcionales y la hoja de datos de los componentes clave; tu misión será plasmar todo en un esquema limpio y listo para pasar a PCB, cuidando la integridad de señal y las buenas prácticas de EMC. Entregables esperados: • Esquema completo en Altium Designer o KiCad, incluyendo anotaciones claras. • Lista de materiales (BOM) detallada con referencias de proveedores. • Notas técnicas que justifiquen elecciones de reloj, dominios de potencia y restricciones de enrutado. • Orientación breve para la etapa de layout, para que la transición sea fluida. Valoro una c...

I have a finished KiCad board that already works but now needs two extra sections added. First, I want the single 24 V AC input to feed a pair of regulated rails: 12 V DC and 5 V DC. I am open to either integrated buck modules or a fully discrete approach—whichever you feel gives the best balance of cost, efficiency, and board real-estate. Second, I need four relay channels that close whenever they see a brief 3.3 V pulse and route the incoming 24 V AC line to the load. I have no strong preference between solid-state or electromechanical devices and will follow your recommendation once you review the schematic and current requirements. You will receive the existing KiCad project, including schematic, layout, and the reserved pin locations for each new block. Placement is flexible, ...

I’m developing a new consumer home-appliance and need a specialist who can take my schematic concept and turn it into a production-ready PCB inside Altium Designer. Scope • Capture or clean up the existing schematic. • Lay out a compact, manufacturable multilayer board that fits the mechanical envelope I’ll share from Fusion 360. • Generate all fabrication and assembly outputs (Gerbers, drill, BOM, pick-and-place). • Export a STEP model so I can check the board in Fusion 360 before tooling. Key details • The board will sit in a plastic enclosure with tight clearance, so component heights and keep-outs must be respected. • It must comply with typical household appliance safety and EMI guidelines (basic insulation distances, filtere...

I need a double-layer PCB design for a consumer electronics radio project. Requirements: - Experience with double-layer PCB design - Knowledge in designing PCBs for consumer electronics - Flexibility to accommodate both SMD and through-hole components Ideal Skills and Experience: - Proficiency in PCB design software (e.g., Altium, Eagle, KiCAD) - Strong understanding of electronic components and circuit design - Attention to detail and ability to meet project specifications Project: **The device:** a small battery-powered IoT unit that stays in deep sleep almost all the time. It wakes on either a button press or an NFC card scan (whichever comes first), plays a short WAV file through a small speaker, and connects over WiFi. **On the board:** ESP32 SMD module, NFC reader with low-power ...

I need a complete schematic for an analog circuit that will be used in a signal-processing application. My focus right now is solely on the schematic stage—no board layout or routing is required at this point. You will start from a functional description that I will provide (target bandwidth, expected input/output levels, and available supply rails) and turn it into a clean, well-documented schematic that can later be handed off for PCB layout. Proper component selection, clear annotation, and ready-to-simulate design files are essential. Please work in a mainstream CAD tool such as Altium Designer, KiCad, or OrCAD—let me know which one you prefer so I can confirm compatibility. The final hand-over should include: • The editable source file in the chosen CAD format...

I need a double-layer PCB design for a consumer electronics radio project. Requirements: - Experience with double-layer PCB design - Knowledge in designing PCBs for consumer electronics - Flexibility to accommodate both SMD and through-hole components Ideal Skills and Experience: - Proficiency in PCB design software (e.g., Altium, Eagle, KiCAD) - Strong understanding of electronic components and circuit design - Attention to detail and ability to meet project specifications Project: **The device:** a small battery-powered IoT unit that stays in deep sleep almost all the time. It wakes on either a button press or an NFC card scan (whichever comes first), plays a short WAV file through a small speaker, and connects over WiFi. **On the board:** ESP32 SMD module, NFC reader with low-power...

I need a seasoned electrical / electronics engineer to take a voltage stabilizer for industrial equipment all the way from concept to a bench-tested prototype. The unit must accept anything from 200 V to 480 V on the input side. What I am expecting from you: • A complete schematic with component selections that balance reliability and cost. • Simulations (LTspice, PSpice or equivalent) that verify thermal behavior, transient response and overall regulation. • PCB layout files (Altium, KiCad or similar) ready for fabrication, with clear creepage / clearance and EMI considerations. • A detailed bill of materials, including alternative parts in case of supply issues. • Assembly and test procedures so I can replicate your bench results and move to pilot produc...