电子 Jobs

I need a seasoned power-electronics engineer to take my concept for a small, isolated flyback switching power supply and turn it into a production-ready design for a consumer-electronics product. The supply must accept 230 V AC nominal but remain stable across the full universal range of 85–265 V AC. On the secondary side I want three rails—12 V, 5 V, and 3.3 V DC—sharing roughly 3–4 W total. Exact current splits can wait until you help me finalise the power budget. Compact size is the top priority, so I expect smart component selection, tight transformer design, and a PCB layout that keeps both footprint and height to an absolute minimum while still meeting creepage, clearance, and EMI/EMC requirements. Although efficiency and low standby losses matter (this will ...

I'm seeking an experienced Arduino developer to create a working robotics project for my final course requirement. The robot needs to navigate using obstacle avoidance and display status with LED indicators. Requirements: - Functionality: Obstacle avoidance - Components: Use of ultrasonic sensors - Information display: LED indicators Ideally, you should have: - Expertise in Arduino programming - Experience with ultrasonic sensors - Knowledge in robotics and obstacle avoidance algorithms - Ability to integrate LED indicators for status display Please ensure that the final product is fully functional, not just a theoretical design. everything should come from your SparkFun Inventor's Kit (SIK)

My desktop’s hard drive suddenly vanished from both the BIOS and the operating system. All cables and power leads appear firmly seated, yet the drive will not spin up or register on any SATA port I try. I need a skilled hardware repair-focused technician to diagnose the root cause and bring the drive back to a state where it is reliably detected again. The job is strictly hardware-level: testing the drive on proper benches, checking the PCB and controller, inspecting the power delivery, replacing or repairing any failed components, and verifying the unit in a working test rig. If a donor board or firmware flash is required, please let me know beforehand so I can approve sourcing. Deliverables • A repaired hard drive that mounts consistently on a standard SATA interface &bu...

I have a batch of 51-100 boards that need careful through-hole soldering, plus a small run of matching wire harnesses and a few damaged PCBs that require touch-up repair. All components are already sourced and labelled; I simply need steady-handed assembly and inspection so everything leaves my shop fully functional. You’ll be working with both through-hole parts and SMD repairs down to 0603 size, so solid joint quality, clean lead trimming, and consistent flux cleanup are vital. After soldering, each board must pass a quick continuity and visual check before you move on to the next. The wire harnesses are straightforward crimp-and-solder leads that plug directly into these boards, and I’ll provide the pin-out diagrams. Deliverables: • 51-100 fully soldered, tested throu...

Ignition HMI/SCADA screen designer — operator UI redesign (regulated life-sciences) I’m looking for an experienced HMI/SCADA designer to redesign a set of operator screens for a regulated life-sciences application. The existing screens work but need a cleaner, modern, more user-friendly redesign. Scope: Redesign existing operator screens for clarity and ease of use Good HMI practice: clear layouts, logical navigation, readable alarm/status presentation, consistent styling Deliver a clean, modern, professional look Ideal experience: Ignition (Perspective and/or Vision) — required Industrial HMI/SCADA screen design Familiarity with GMP / 21 CFR Part 11 environments a plus Please share relevant HMI/SCADA work samples. Project specifics and screens shared only with the ...

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

I'm looking for a skilled electronics designer to create two custom circuit boards for a car. Requirements: 1. Steering Wheel Control Board: - Manage cruise control and 20+ reprogrammable gameplay buttons. - Must be reliable and responsive. 2. Shifter Position & Power Functions Board: - Handle shifter position data. - Control power functions to manage other circuit boards. Ideal Skills: - Experience with automotive electronics. - Proficient in circuit design and PCB layout. - Familiarity with microcontrollers and input/output handling. Please provide samples of previous work and a brief outline of your approach. Must be in a small form that does not exceed the size larger than 8 inches ( Similar layout to a 2018 Chevrolet Silverado LT steering system + shifter la...

I need a boost converter designed for a solar PV system, aimed at increasing energy efficiency. Key Requirements: - Input Voltage: 48-72V - Output Voltage: 325V constant across all irradiance values - Closed-loop control system Ideal Skills and Experience: - Expertise in power electronics - Experience with MPPT (Maximum Power Point Tracking) algorithms - Proficiency in designing boost converters - Strong understanding of closed-loop control systems

I'm seeking a skilled PCB designer to create a compact PCB for digital inductive proximity sensors. The design must prioritize noise reduction and temperature stability. Key requirements: - Small form factor - High noise reduction - Excellent temperature stability Ideal skills and experience: - Expertise in PCB design for digital sensors - Experience with noise reduction techniques - Knowledge of temperature stability in PCB designs - Proficiency in relevant design software (e.g., Altium, Eagle) Please provide examples of similar work and a brief plan for this project.

I'm seeking an experienced designer to create a battery-powered, outdoor audible alarm system (sirens) for bushfire early warning. Key requirements: - Design an effective audible alarm (sirens) - Suitable for outdoor installation - Battery-powered and durable against harsh weather conditions Ideal skills and experience: - Experience in alarm system design - Knowledge of outdoor, battery-powered systems - Ability to create weather-resistant designs - Background in safety systems or emergency response is a plus

I need a clear, production-ready schematic that lets me vary the speed of a DC motor smoothly and repeatably. The goal is a stand-alone circuit I can hand straight to my PCB team or prototype on a breadboard without extra guesswork. Here is what I’m after: • A complete schematic showing every component and connection required for precise speed control of a single DC motor. • A concise Bill of Materials with component values, part numbers, and readily available footprints. • Any design notes that explain how the circuit regulates speed and protects the motor (e.g., soft-start, over-current safeguards, thermal considerations). • Optional but welcome: a quick LTspice, Multisim, KiCad, Altium, or Eagle file so I can simulate or drop the design into my layout ...

I have a custom board built around the STM32G031 and I want a clean, production-ready firmware project created in C with STM32CubeIDE. Your first task is to bring the microcontroller to life: set up the system clock, configure the required GPIO pins, verify the build, and program the device. Here is the scope I need covered: • Create a CubeIDE project that targets STM32G031, using either HAL or direct LL drivers where it makes sense. • Configure clock tree (HSE, HSI or internal PLL as required) so the MCU runs at the specified operating frequency. • Initialise all GPIOs I mark on the schematic; direction, speed and pull settings must match the hardware design. • Build, generate the .hex/.bin files and flash them onto the board through ST-Link over SWD. • ...

Descripción del Proyecto: Busco un ingeniero electrónico para diseñar el esquemático y la placa (PCB) de un dispositivo IoT educativo llamado FAZI. Es un presentador, Air Mouse y teclado inalámbrico para docentes. OJO: Yo me encargaré del 100% de la programación (Firmware) y de la integración vía Wi-Fi con mi servidor. El trabajo que requiero de ti es únicamente el diseño electrónico y ruteo en KiCad para mandar a ensamblar. Requisitos de Diseño Físico y Arquitectura: Forma de la placa (Crucial): La PCB debe tener un formato alargado y estrecho, imitando un lápiz, puntero o varita mágica (dimensiones sugeridas: 20-22 mm de ancho por 100-120 mm de largo). Integración a ...

I’m building a compact control panel that combines an ESP32 core, a membrane keypad, and a 3.5-inch TFT LCD. I already have functional requirements and rough block diagrams; what I now need is the full electronic design, ready for manufacturing. Scope • Power architecture: single regulated 5 V input with the necessary step-downs and filtration for the ESP32’s 3 V3 rail, back-light drive, and any aux lines. • Digital section: ESP32 module or bare chip with all pins broken out for firmware flashing, reset, and debugging. • Interfaces: matrix keypad connector and ESD protection, 8/16-bit TFT LCD interface, plus level-shifting where required. • Communications: I²C, SPI, and UART brought to headers for external sensors and future expansion. •...

1. Project Overview & Architecture The goal of this project is to design a set of modular, decentralized expansion PCB boards for grow tent automation. Instead of a rigid central mainboard, each expansion board functions as an independent node powered by a localized ESP32-C3 Supermini module, communicating via Wi-Fi/MQTT through ESPHome into Home Assistant. To reduce clutter and eliminate the need for multiple external power supplies, all boards will share a common power distribution concept: 12V DC Input (via standard 5.5x2.5mm barrel jacks or terminal blocks) with onboard step-down regulation (e.g., Buck converters) to supply 5V and 3.3V where needed, allowing a single 12V barrel power supply to be daisy-chained across boards. 2. General Requirements for All Boards Microcontroller: ...

Project Title: FPGA-Based Real-Time PCB Defect Detection and Localization Project Description: I am looking for an experienced freelancer to assist with the development of my ECE final-year major project, titled “FPGA-Based Real-Time PCB Defect Detection and Localization.” The objective is to develop an FPGA-based system that detects and identifies the locations of visible defects on printed circuit boards (PCBs). The proposed system should compare a reference PCB image with a test PCB image and use image-processing techniques to detect differences that indicate potential defects. Required Features: 1. PCB image acquisition or loading of sample PCB images. 2. Image preprocessing, including grayscale conversion and thresholding where appropriate. 3. Reference and test image...

# 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...

This project strictly requires hands-on prototyping, including physical assembly and testing—design-only services will not be considered I already have detailed winding diagrams, coil counts, wire gauges, and a full wiring schematic for three compact electromagnets—each under 10 cm in any direction. Your task is to turn these drawings into a tangible proof-of-concept and ship it to me. The magnets will sit in a custom harness. I’m leaning toward a light alloy or other metal solution, but I’m open to your recommendations once you see the design constraints. All electronic components, fasteners, and raw materials will be reimbursed at cost; please keep receipts. Power can come from batteries, a small AC supply, or a rechargeable pack—I’m happy with which...

A compact double-layer board in one of my units has started to misbehave and, unfortunately, the original CAD files are long gone. I still have a clean schematic with every part ID called out, so the information is there—it just needs to be turned back into a full set of manufacturing data so I can isolate and fix the fault. Here’s what the assignment entails. I will provide high-resolution photos of both sides of the board together with the schematic. Trace the copper, match every net to the schematic, and rebuild the layout exactly as it sits today. Deliverables: • Editable schematic aligned with the physical board • Fault-analysis notes pointing to likely trouble at power input Freelancers are required to provide a budget estimate based on images supplied. Once ...

I am looking for an experienced power electronics engineer or engineering team to design a residential-scale hybrid solar inverter for commercial production. The project involves developing a single-phase, 230 V AC, 50 Hz pure sine-wave hybrid inverter that integrates rooftop solar panels, a lithium battery bank and the utility grid. The design should prioritise high efficiency, reliability, safety and ease of manufacturing. I prefer an engineer with previous experience designing working solar inverters, grid-connected converters, MPPT controllers and bidirectional battery systems. An existing, validated reference design that can be licensed or transferred is preferred. 1. Target Specifications Rated power: 1–5 kW continuous AC output: 230 V RMS, single phase, 50 Hz Output wave...

I need an experienced, on-the-ground China-based sourcing agent to secure reliable industrial-grade electronics for my production line—specifically PCBs, electronic modules, and any closely related components that fall under the industrial electronics umbrella ( TPU injection molding manufacturers , gateway components, SS inserts ) . The process will start with samples for field testing in my country, followed by purchases that will gradually increase in volume. Your role starts at supplier identification and finishes only once the goods are on a carrier, export-ready. I expect you to: • Build a short-list of vetted factories or distributors able to meet industrial specifications and international certifications • Negotiate pricing, minimum order quantities, lead t...

1. Industrial Air Compressor Control Engineer – PLC Programming & System Integration (Hitachi Preferred) We are looking for an experienced Industrial Air Compressor Control Engineer / PLC Programmer to support the development and integration of control systems for industrial air compressors. The ideal candidate should have hands-on experience with industrial air compressor control systems, PLC programming, electrical control circuits, and communication between compressor controllers and external automation systems. Experience with Hitachi air compressors is highly preferred. Experience with other major brands, such as Atlas Copco, Ingersoll Rand, Kobelco, and other industrial compressor manufacturers, is also welcome. 2. Required Technical Skills Candidates should have practica...

Complete Layout review of a 12 Layer PCB

Status: Schematic is finalized — layout work only (with expert schematic/BOM review). Project Overview I need an experienced PCB designer to create the PCB layout for a small precision encoder module with Bluetooth Low Energy (BLE) connectivity. The complete electronic schematic and BOM are already defined; your task is the board layout, design review, and preparation of full manufacturing data. A schematic review is required to confirm correctness before placement begins. Board Architecture: The board contains two functionally independent sections, which must be physically separated to avoid mutual interference: - Encoder section: STM32G474 microcontroller and its supporting peripherals, two AM26LV32E differential line receivers and ESDA6V1SC6 ESD protection device. - Bluetooth se...

Our two-turbine, 2 × 250 kW hydroelectric station is now in the construction phase and the control panels are ready for code. I need a complete PLC program built around a Delta CPU of AS series. The logic must: • Start, stop, and protect each Francis turbine, including speed regulation and emergency shutdown routines. • Modulate inlet gates to manage water flow while maintaining set-point head and optimising efficiency. • Continuously monitor generator voltage, current, frequency and bearing temperatures, triggering alarms and trips when limits are breached. An accompanying HMI (Delta DOP or compatible) with clear status pages, trending, and manual-override screens is expected. I will supply P&IDs, I/O lists, and functional descriptions—your task i...

I have an ESP32-based circuit fully wired and documented in a handful of clear .png images. What I need now is a clean KiCad project that turns those pictures into a proper electronic schematic and a ready-to-fabricate PCB layout my daughter can actually build and use for her college assignment. All the parts, net names, and pin connections are already settled in the images, so there is no component selection or electrical guesswork—just accurate translation into KiCad. Because the board will be assembled and deployed, please route it as a real-world, functional design rather than a classroom illustration. Standard IPC constraints aren’t mandatory; feel free to apply your usual good-practice defaults unless you spot something that obviously improves manufacturability or reli...

I’m scheduling routine maintenance for my split-type air-conditioner and want someone who knows the system inside out. The service visit should cover the essentials that keep the unit running efficiently and extend its lifespan. Please make sure the following tasks are completed during your visit: • Filter cleaning or, if necessary, replacement • Accurate check and top-up of refrigerant levels • Full system inspection, including electrical components, coils, drain line, and overall performance test I expect you to arrive with the tools and basic consumables needed for a standard split AC tune-up, document any additional parts that might be required, and leave the workspace clean when you’re done. If you find anything outside normal wear and tear, let me k...

need a small IoT device built that can read data from a Selec 500 UCI PID controller through its RS-485 Modbus port and send those values automatically to a Google Sheet via Wi-Fi. The device should: 1. Use an ESP32 board (low-cost, Arduino-compatible). 2. Take input from the RS-485 port of the Selec PID using a MAX485 module. 3. Host a Wi-Fi setup page (so user can enter SSID & password). 4. Send the PID readings (PV, SP, and OP values) every few seconds to a Google Sheet (via a Google Apps Script endpoint). 5. Work on 5V DC or USB power. 6. Be housed in a small project box or DIN rail enclosure for industrial use.

Project Title: Active Power Filter for EV Charging Station – MATLAB/Simulink + Hardware Prototype Project Description: I am working on my graduation project, which is an Active Power Filter (APF) for EV charging stations, and I am looking for a Power Electronics Engineer to help me with both the simulation and practical hardware implementation. The project includes: * 3-phase Active Power Filter design * MATLAB/Simulink modeling and simulation * Control strategy and controller design * Harmonic compensation and THD reduction * DC-link design * Power semiconductor switches and gate drivers * Current/voltage sensing * Protection circuits * Filter component selection * PCB design * Hardware prototype implementation * Testing and troubleshooting * Comparing simulation results with ex...

Chcę ożywić mój ekran Waveshare, wyświetlając na nim własną animację. Posiadam gotowy plik GIF, lecz wymaga on konwersji do formatu obsługiwanego przez Arduino. Mogę dostarczyć grafikę także jako JPEG lub PNG. Twoje zadanie: • Przekonwertuj mój GIF (lub wersję JPEG/PNG) do formatu akceptowanego przez bibliotekę. • Napisz przejrzysty, dobrze skomentowany szkic Arduino, który odtwarza animację na ekranie Waveshare. Kod powinien działać na standardowym środowisku Arduino IDE i korzystać z dostępnej biblioteki.

Business Development Representative – Electronic Components Territory: New Jersey & New York We are looking for an experienced freelance sales representative based in the New Jersey / New York area to help develop sales of our range of franchised electronic and electro-mechanical component lines. This is a part-time position, approximately 1–2 days per week, and is primarily a field-based sales role focused on visiting customers and developing new business face-to-face. You will be expected to identify potential customers, arrange meetings, present our product range and develop long-term relationships with purchasing, engineering and supply-chain teams. The role would suit an established sales professional with existing industry contacts who can introduce our prod...

Using 1,8-inch round TFT panels from I need the electronics and software ecosystem that turns them into a re-configurable display wall. With multiple matrices where each module clicks together, powers up, and appears as one continuous canvas. Hardware • Design a compact PCB for each display that carries its own driver, power conditioning and a Wi-Fi-enabled microcontroller so every tile can auto-discover its neighbours. - alternatively make it with one master control unit that can master multiple 16 display matrices • Provide an edge connector or other simple bus so power and data can daisy-chain when the tiles are slotted into a frame. • Supply full schematics, BOM and Gerber files, plus a reference back-plane/controller if you feel a master node will simplify thi...

Here’s a cleaner version updated for a Combo Walk-In Cooler & Walk-In Freezer project: We are a commercial refrigeration and HVAC company seeking an experienced Electrical Designer / Control Panel Designer to create professional electrical drawings for a Walk-In Cooler & Walk-In Freezer Combo system controlled by PLC. The project includes complete electrical design and drawings for the PLC Control Panel, Walk-In Cooler, and Walk-In Freezer. The electrical design should include: Evaporator units and evaporator fan controls Electric defrost heaters Drain heaters Refrigeration solenoid valves Temperature sensors Termination Sensor Door switches and safety controls Contactors and control relays Circuit breakers and fuses Control power supplies PLC digital inputs and outputs...

Custom 3-PIR GSM Anti-Theft Security Alarm with SMS, Call & Relay PROJECT DESCRIPTION: I am looking for an experienced embedded hardware and firmware developer to design and develop a custom human motion / anti-theft security alarm using an ATmega328P (Arduino-compatible) microcontroller. The device will use 3 external PIR motion sensors connected to the main PCB through long cables. The main feature is a selectable PIR detection threshold of 1, 2, or 3 sensors. This will help reduce false alarms. MAIN PIR LOGIC: The device has: * PIR 1 * PIR 2 * PIR 3 The user can select the required number of PIR sensors that must detect movement. Threshold 1: Any one PIR becomes active = intrusion confirmed. Threshold 2: Any two PIRs become active = intrusion confirmed. PIR1+PIR2, PIR1+PIR3...

I’m a hardware design engineer working on designing a BLDC fan controller for my company. I’m looking for an experienced professional to guide me through the design, implementation, and validation process. Your role will involve: - Mentoring and providing feedback on my design and approach. - Assisting in creating a control algorithm focused on energy efficiency. - Reviewing selected MCUs or gate-driver ICs for compatibility with the project. - Offering advice on firmware best practices and PCB layout details. - Sharing insights from your experience (e.g., chipsets used, challenges overcome). The collaboration will help ensure an efficient, stable, and reliable BLDC fan controller design tailored for our requirements.

We are looking for an engineer team which has a good PCB design skill with motor driver knowledge and experience with good programming skill. This project is to upgrade our current PCB(Old prototype: having some issues) to update version. We will make one prototype PCB to test. This machine has the following system: 1x main CPU (GD32F450IGH6) 1x AC motor inverter (RS485) Command input 1x sensor Up to 5x stepping motor ( synchronized, need fast movement)　 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 ) 2 x stepping motor 3 x COM to other device Ethernet We will send the current prototype PCB info induvidually when we decide to proceed. Current prototype ...

I need a system to switch on 8 servo motors at equivalent intervals of 10 seconds. Requirements: - Control method to be determined (microcontroller, software, or manual switch) - Experience with servo motors and control systems - Ability to ensure precise timing and coordination

I need a skilled PCB designer to convert my existing through-hole PCB, designed in Fritzing, into an SMD PCB for production using KiCad. The design works great, but I need it to be SMD. Requirements: - Convert the following components from through-hole to SMD: - ICs (including ESP32, A7670G modules, and charge controller) - Use of standard footprints for all SMD components. Ideal Skills and Experience: - Proficiency in KiCad - Experience with SMD PCB design and layout - Familiarity with the specified components (ESP32, A7670G, charge controllers) - Attention to detail and accuracy in design Please provide samples of previous SMD PCB designs.

I need an additional battery retrofitted to my existing 5-10 kW grid-tied solar PV system. The primary goal is to store excess energy. Ideal Skills and Experience: - Experience with grid-tied solar systems - Knowledge of battery integration and retrofitting - Electrical engineering background is a plus - Relevant certifications in solar energy systems I have a 5.2kWh Givenergy battery already up and running. I have sourced an additional battery of the same specification and would like someone to attach it in parallel to the existing battery and commission it please.

Medieval torch prop (~30–45 cm, handheld) for outdoor play. Working FDM-printable CAD draft exists in Fusion 360, but all dimensions are adjustable around your component choices. Concept already validated with basic parts; we now want production-grade design. Electronics scope: - Compact circuit: 1+ LEDs/small bulb with realistic flame flicker (not static blink) - On/off switch, user-replaceable AA/AAA battery compartment (no soldered cells) - Minimum 14–20 h runtime per battery set, justified with power calculations - Full off-the-shelf parts selection (part numbers + purchase links) CAD scope: - Rework enclosure in CAD (we used Fusion 360, but could be another CAD software) around your components (battery door, switch mount, wire routing) - Weather...

A complex, minimum 4-layer board needs to be taken from concept to production-ready files using EasyEDA Pro. I already have the preliminary schematics and key mechanical constraints; the task now is to translate them into a clean, reliable layout that respects enclosure clearances, power integrity, and high-speed signal rules. You will be working with mixed-signal nets, power electronics sections, and several custom parts that come only with datasheets, so footprint creation and library hygiene are critical. Proper plane splitting, controlled-impedance routing, ground strategy, and EMI/EMC-conscious placement all matter just as much as meeting the mechanical outline I will supply. Regular progress snapshots—whether via EasyEDA’s share link or exported PDFs—keep us align...

Hello PCBWay, I need you to design and supply a fully assembled, programmable PCB for a battery-powered motion recorder. I do not have a schematic and cannot solder components myself. Please check whether an existing design could be adapted to reduce the cost. **Shape and size** - Rectangular PCB with rounded corners. - Standard credit-card dimensions: 85.60 × 53.98 mm. - Keep the PCB and components as thin as practical. - A separate flat LiPo battery will sit behind the PCB. Please keep the battery area clear of tall components. **Hardware** - A low-cost, low-power microcontroller that I can program myself. - An onboard 3-axis accelerometer and 3-axis gyroscope. - Two assembled push buttons: 1. Power on/off. 2. Start recording; press the same button again to stop and save. - One pro...

Custom compact PCB derived from the Arduino Nicla Vision hardware architecture Main MCU: STM32H747 Retain:- GC2145 camera - IMU - Wi-Fi/BLE - external flash/memory required by the original design - USB programming/data - battery charging - battery monitoring/power management Remove:- onboard microphone - onboard VL53L1CB ToF sensor - unnecessary expansion/connectors not required for the final product Add PONO TSD50 LiDAR- UART communication - dedicated power supply - 4 solder pads: VCC / GND / RX / TX Battery:- 1S Li-Po - approximately 350 mAh - battery remains permanently connected One momentary push button for:- system power ON - controlled shutdown/OFF One USB port must support:- battery charging - firmware programming - USB communication Battery must be able to charge even when t...

I need a production-ready PCB for an industrial ranging device that will be integrated into larger automation machinery on our factory floor. The board has to combine three core capabilities: robust signal processing of the sensor data, reliable high-power outputs to drive downstream actuators, and on-board wireless communication for status reporting and firmware updates. The footprint must stay within 80 mm × 60 mm, operate from a 24 V DC rail, and meet industrial EMC/EMI standards (EN 61000 family). A multilayer stack-up with controlled impedance traces for the RF section is expected, along with generous creepage/clearance on all high-current paths. Deliverables • Schematic (Altium or KiCad) • Fully routed Gerber/ODB++ files ready for fabrication • Annotated ...

I need a complete electrical design for a true-online 600 W UPS that will operate in a home environment. The scope covers everything from the high-level architecture down to production-ready documentation, so that I can have the unit prototyped and assembled without further engineering work. What I expect you to produce includes: • Full schematic with clearly annotated component values • Bill of materials using readily available parts • PCB layout files (Gerber or equivalent) and 3-D board view • Control logic or firmware source (if a microcontroller or DSP is used) • Mechanical outline showing heat-sink placement, transformer or inductor dimensions, and suggested enclosure size • Brief test plan describing how to verify continuous 600 W output, transfer time...

Lead Mechatronics / Product Development Engineer Lead Mechatronics Engineer - Smart Interactive Hardware Prototype Project Description: We are developing HappyMat(TM) Prototype #1, a smart interactive doormat incorporating sensors, a digital display, addressable LED lighting, wireless connectivity, camera/audio components, embedded electronics, and a custom physical structure. We are seeking an experienced Lead Mechatronics / Product Development Engineer to serve as the technical lead and primary system integrator. You will collaborate with other HappyMat specialists, including embedded/firmware, mechanical/CAD, prototype fabrication/electronics, and IoT/interface development. Primary Responsibilities: • Define the overall prototype architecture. • Coordinate technical decis...

Embedded Systems / Firmware Engineer Project Description HappyMat(TM) is seeking an experienced Embedded Systems / Firmware Engineer for HappyMat Prototype #1. You will be responsible for the prototype's embedded controller, firmware, sensor integration, LED control, digital display, wireless communications, and associated hardware/firmware integration. Primary Responsibilities • Develop and configure the embedded controller and firmware. • Integrate pressure/presence sensing. • Integrate addressable LED lighting. • Integrate the digital display. • Implement Wi-Fi connectivity. • Implement Bluetooth/BLE connectivity. • Support camera, speaker, and microphone integration. • Coordinate with the IoT/interface engineer where applicable. • Tr...

Busco un ingeniero de sistemas embebidos para el desarrollo del firmware base de un MVP en fase pre-semilla. El proyecto consiste en la integración en laboratorio de un microcontrolador ESP32 WROOM programado en C++ (FreeRTOS / Arduino IDE) que coordine la lectura de sensores y la activación autónoma de actuadores de seguridad urbana. Requisitos técnicos del sistema: • Gestión de Energía: Modos de bajo consumo (Deep Sleep) y activación por interrupciones físicas GPIO externas. • Integración de Sensores: Matriz térmica I2C (AMG8833), micrófono digital I2S, sensor ultrasónico de distancia, termistor digital DS18B20 y sensor digital de conductividad/presencia de agua (detección de desbordamien...

I am looking for an experienced Electronic Engineering Freelancer to design a custom, compact, all-in-one PCB for a premium adult collectible display base. The board will be manufactured using standard Turnkey PCBA (automated assembly), so the design must utilize readily available components from standard libraries (such as JLCPCB / LCSC component libraries). Core System Requirements: 1. Microcontroller Core: Integrated ATmega328P-AU (TQFP-32 surface mount package) with a 16MHz crystal oscillator and supporting circuitry. Programming/power interface must be a surface-mount USB Type-C port linked via a CH340G/C serial converter chip. 2. Power Architecture: Direct 5V DC power delivery completely driven over the Type-C USB interface (bypassing battery circuitry entirely). Must include a surfa...

I need a simple, single-board PCB layout created from an already completed and fully tested Fritzing (.fzz) project. The circuit logic, components, and pin mappings are 100% verified on a physical breadboard. This is a very quick micro-task for an experienced electronics engineer. The design is an ultra-low-power Smart Irrigation Sensing Node using an all-3.3V power architecture. Key Specifications & Pin Mapping: • Microcontroller: Arduino Pro Mini (3.3V variant) • Radio Module: LoRa Ra-01 (Antenna area must be kept completely clear of copper traces and ground planes). Pin connections required: NSS to D10, RST to D9, DIO0 to D2, plus standard hardware SPI lines (D11, D12, D13). • Power Input: Direct 3.2V LiFePO4 Battery connection to the Arduino VCC rail (Bypassing the ...