Design de Circuito Jobs

Quero centralizar todo o controle de cargas do meu veículo em um PDM simples, alimentado a 12 V, que use: • 8 relés ISO de 30 A • 2 relés mini de 20 A • Fusíveis individuais para cada saída O módulo precisará comandar motores, luzes e atuadores diversos, então a disposição das trilhas deve suportar picos de corrente contínua sem aquecimento excessivo e contemplar boa separação entre linhas de potência e sinais de acionamento. Já possuo um briefing com dimensões, referências de pinagem e alguns exemplos de projetos semelhantes; envio assim que iniciarmos para você tomar como base. Minha expectativa é receber: 1. Esquema elétrico co...

The existing PCB is functionally sound, but several components need to be swapped for newer equivalents and a handful of additional SMD parts must be integrated without altering the overall board footprint. The layout will stay largely intact; the job is focused on component-level edits rather than a full redesign. Key work: • Replace specified components with the updated parts listed in my BOM draft. • Add two new SMD devices (a low-profile DC-DC converter and a temperature sensor) into the current schematic and layout, observing clearance and impedance rules already in place. • Update the BOM, pick-and-place, and assembly drawings so everything aligns with these changes. Deliverables: • Revised schematic and PCB layout files (Altium Designer preferred, KiCad a...

I'm looking for an experienced professional to assist with the electronics and circuitry of a CAD drone project. Key tasks include: - Designing and integrating electronic systems, specifically for motors and propellers. - Collaborating to ensure efficient power distribution and system functionality Ideal candidates should have: - Proven experience in drone electronics - In-depth knowledge of motors, propellers, and circuitry - Strong problem-solving skills - Ability to work collaboratively and communicate effectively Please include relevant experience in your application.

Required ment 1. Meter should display Voltage and current 2. In auto the pump should start whenever the power comes back 3. ⁠in manual unless he tact switch pressed should not start 4. ⁠another tact switch of switching offf the pump in between 5. ⁠high voltage , low voltage , over current , under current pump should stop 6. High current and low current over voltage under voltage all Therese paramaters should be settable

# TECHNICAL REQUIREMENTS ## VHF SAME Receiver and AFSK/FSK Demodulator **Document:** RT-RF-SAME-001 **Revision:** 1.1 **Application:** EAS-SAME/SASMEX Signal Receiver **Target Frequency:** 162.425 MHz **Operating Band:** 162.400–162.550 MHz --- ## 1. OBJECTIVE Design and develop an electronic module capable of receiving the VHF signal at **162.425 MHz**, demodulating the NFM transmission, recovering the baseband signal, and demodulating the **AFSK/FSK data used by SAME (Specific Area Message Encoding)**. The module shall cover the complete signal chain: **Antenna/RF Input → RF Filtering → VHF Receiver → NFM Demodulation → Baseband Conditioning → AFSK/FSK Demodulation → Digital DATA_OUT** The final output shall be ready for connection to an extern...

Design and build a three-phase, 50 V / 30 A SPWM inverter tailored for an induction motor. The work spans the complete hardware chain—schematic capture, PCB layout, power stage assembly, and gate-drive/protection circuits—plus the firmware that drives it. Either a PIC32 or STM32 can sit at the core; choose whichever lets you deliver stable, low-jitter PWM with minimal dead-time distortion. Firmware targets • Closed-loop speed control with a user-selectable frequency range of 0–250 Hz • Parameter entry and live monitoring over UART, USB, or CAN (pick one to keep the bill of materials lean) • Safe-start, over-current, and over-temperature trips baked into the interrupt flow Deliverables 1. Complete schematics (Altium, KiCad, or other mainstream CAD)...

2-Layer PCB Design – EMI/EMC-Oriented Power Supply & ESP32 We are looking for an experienced Altium Designer PCB Engineer to design a 2-layer PCB for a Power Supply and ESP32-based control system. The PCB design will be based on the provided Power Supply schematic and ESP32 schematic, along with the existing PCB Gerber, NC Drill files and PCB images for reference. The PCB must be designed with a strong focus on EMI/EMC performance, including proper grounding, power distribution, buck-converter layout, high-current routing, thermal management and separation of noisy power/motor sections from the ESP32 and sensitive signal sections. Key Requirements: 2-layer PCB Altium Designer EMI/EMC-oriented PCB layout ESP32-WROOM-32 and A4988 motor-driver section 5V and 3.3V power sections...

I’m developing an electromechanical product whose performance hinges on a well-engineered power system. I need an engineer who can take ownership of everything from initial concept through to verified schematics and simulation results. Typical tasks will include specifying components, sizing converters, modelling load profiles, running fault analyses, and confirming compliance with international safety standards. When you reply, focus on the depth and relevance of your experience in power-system design for electromechanical applications—show me projects where you have already balanced efficiency, thermal limits and cost, ideally using tools such as MATLAB/Simulink, ETAP or similar. The first milestone will be a concise design brief outlining the proposed topology, key cal...

I’m developing an electromechanical product whose performance hinges on a well-engineered power system. I need an engineer who can take ownership of everything from initial concept through to verified schematics and simulation results. Typical tasks will include specifying components, sizing converters, modelling load profiles, running fault analyses, and confirming compliance with international safety standards. When you reply, focus on the depth and relevance of your experience in power-system design for electromechanical applications—show me projects where you have already balanced efficiency, thermal limits and cost, ideally using tools such as MATLAB/Simulink, ETAP or similar. The first milestone will be a concise design brief outlining the proposed topology, key cal...

I’m developing an electromechanical product whose performance hinges on a well-engineered power system. I need an engineer who can take ownership of everything from initial concept through to verified schematics and simulation results. Typical tasks will include specifying components, sizing converters, modelling load profiles, running fault analyses, and confirming compliance with international safety standards. When you reply, focus on the depth and relevance of your experience in power-system design for electromechanical applications—show me projects where you have already balanced efficiency, thermal limits and cost, ideally using tools such as MATLAB/Simulink, ETAP or similar. The first milestone will be a concise design brief outlining the proposed topology, key cal...

I'm seeking an experienced PCB designer to create a Bluetooth-connected PCB for a fingerprint lock. This PCB will not only facilitate Bluetooth mobile connectivity but also serve as a remote control interface. Key Requirements: - Primary function: Bluetooth connectivity along with mobile connectivity - Remote control functionality for: - Locking and unlocking the fingerprint lock - Adding administrators - Adding clients Ideal Skills and Experience: - Proficiency in PCB design and Bluetooth integration - Experience with mobile connectivity modules - Knowledge in secure remote control systems - Familiarity with fingerprint module communication protocols and a related mobile application Please include relevant experience in your bids. Looking forward to your proposals!

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 already have a finished schematic and need it turned into a clean, production-ready two-layer board using KiCad. The goal is to squeeze the circuitry into the smallest footprint you can achieve while still respecting good layout practice, clear labelling and standard fabrication limits (0.2 mm trace / 0.3 mm via or better). Along the way please: • Follow KiCad 7.x (or later) so the files open smoothly on my end. • Keep component placement logical for hand or machine assembly; all polarized parts should have their orientation clearly silkscreened. • Route with balanced trace lengths where signals require it, add ground pours on both layers, and include generous test points for key nets. • Run electrical-rule and design-rule checks before handing the job off....

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 need an electrical engineer to build a working prototype for a cooling and heating system. The prototype requires microcontrollers and sensors. Ideal Skills and Experience: - Expertise in circuit design - Experience with microcontrollers and sensor integration - Background in developing heating and cooling control systems - Ability to build and test prototypes Please provide examples of similar work and relevant qualifications.