Electronics Jobs

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. • ...

Smart Grip is a connected hand-grip trainer that measures grip force with a load cell. I need an experienced electronics engineer to take it from a finalized BOM to a tested prototype board: schematic, 4-layer PCB, JLCPCB manufacturing files, and hands-on bring-up of the first boards. This is not a blank-page project. After an NDA you will receive: - System specification and finalized BOM for 11 functional blocks, with LCSC part numbers, stock and price checks - Power budget report: sleep, active and peak current per rail - 49-page engineering test report: 3 load cells tested on a bench with the HX711 (noise, zero drift, linearity, hysteresis, repeatability, dynamic cycling). Result: GO WITH CONDITIONS - Preliminary BOM for the sensor, display, battery and haptic parts - Proof-of-concept ...

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...

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...

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 ...

We’re looking for an experienced PCB designer with strong expertise in EMC-conscious layouts and safety standards. The schematic, reference images, and mechanical requirements are already available. We need a clean 4-layer PCB layout (approx. 170 × 93 mm). The board includes 230V mains and low-voltage sections, so proper clearance/creepage distances, design rules, GND/VCC planes, and an EMC-conscious layout are important. Experience with Surge, EFT, and ESD protection would be great. The project is urgent, requiring completion by next week.

# Automation Programmer for Custom PLC & HMI We are looking for an experienced **automation programmer** to support our industrial projects. Our team will handle: - Customer requirements - Process study - Control philosophy - Sequence of operation - I/O requirements - Interlocks and operating conditions - HMI screen requirements The programmer’s role will be to **implement the provided control logic on our custom PLC and develop the required operator HMI screens**. Main tasks: - Convert our provided control logic and sequence into PLC software - Program digital and analog I/O functions - Implement timers, counters, interlocks and alarms as specified - Develop HMI screens based on our provided design and operating requirements - Connect PLC variables to the HMI - Test and tr...

I need an experienced writer who can step in quickly and produce clear, engaging content on an ongoing basis. While the exact format is still open for discussion, the work will focus on straight-forward content writing—not web development or graphic design—so I’m counting on your skill with words, tone, and structure. Here’s what I do know so far: • I value concise research, an original voice, and fact-checked information. • Everything should be written in fluent, natural English that requires no additional editing on my end. • Turnaround times and word counts will be agreed per piece; flexibility is helpful because project length may vary. • All copy must pass plagiarism checks and be ready to publish. If you’re comfortable adaptin...

Prototype Fabrication / Electronics Technician Prototype Fabrication & Electronics Technician - Smart Hardware Build Project Description: HappyMat(TM) is seeking a highly capable Prototype Fabrication / Electronics Technician to physically assemble and help troubleshoot HappyMat Prototype #1. This position is for someone who enjoys hands-on hardware work - soldering, wiring, assembling, fabricating, modifying parts, troubleshooting, and turning engineering designs into a working prototype. Primary Responsibilities: • Assemble the physical prototype according to the team's engineering designs. • Perform soldering, wiring, connector installation, and electronics assembly. • Install sensors, LED lighting, display, and other electronic/mechanical components. •...

I need an intelligent power extension designed to enhance safety and monitoring. The extension should be compatible with standard wall plugs. Key Requirements: - Temperature Sensing: A separate module to sense the temperature. - Power Control: Automatically cut power supply if temperature exceeds a certain threshold. - Status Indicator: A buzzer with light indication to show contactor status (red for off, green for on). Ideal Skills and Experience: - Experience in designing smart electrical devices. - Knowledge of temperature sensors and power control systems. - Familiarity with integrating buzzers and light indicators. - Background in working with standard wall plug systems. Please provide samples of similar work done.

I'm looking for a skilled speaker designer and maker to help build a Bluetooth speaker primarily for indoor use. I am the designer of the speaker, I am looking to make the design into a workable speaker. Key requirements: - High-fidelity sound quality - Long battery life Ideal skills and experience: - Expertise in acoustics and audio engineering - Experience in arduino, coding and electrical knowledge for speakers - Knowledge of prototyping, battery technology.

I need a comprehensive rewire of a medium-sized school (11-30 classrooms). The project requires the integration of low voltage systems, specifically lighting and small power, along with an addressable fire alarm system. Key requirements include: - Rewiring for all electrical systems - Integration of lighting and small power LV systems - Installation of an addressable fire alarm system Ideal skills and experience: - Electrical engineering background - Experience with LV systems and fire alarms - Familiarity with school environments and safety regulations - Relevant certifications and licenses

I need an experienced hardware designer to develop a vibration sensor for machinery monitoring. Essential Requirements: - Design a robust vibration sensor - Ensure accuracy and reliability for industrial environments - Provide a detailed technical specification Ideal Skills and Experience: - Background in sensor hardware design - Experience with industrial application requirements - Proficiency in relevant design software and tools Please share your portfolio and relevant experience in your bids.

I need a working TIA Portal V17 project that lets me test and demonstrate basic control logic on a Siemens S7-1200. The goal is to open the file in my own installation, start PLCSIM (standard or Advanced, whichever you prefer), and watch the logic execute without errors. Scope • Create a clean project with the correct S7-1200 hardware configuration. • Write and comment the fundamental control routines I will specify once we start (start/stop, interlocks, simple timers, fault reset). Keep the code in LAD or FBD so it is easy to follow. • Set up tags and watch tables so I can toggle inputs and observe outputs during simulation. • Provide a brief note inside the project (or as a PDF) explaining how to start the simulation and what to look for. Acceptance I will...

Senior Software Engineer – AI Model Output Evaluation & Labeling We need a Senior Software Engineer to support our client's AI model labeling work. You'll evaluate AI model outputs and write clear rationales for each evaluation. You will work remotely on the client's computer via VM. Requirements: - Senior Software Engineer (5+ years preferred) - Native-level English writing skills (critical — rationales must be precise and grammatically flawless) - Comfortable working in a remote VM environment - Strong attention to detail and ability to follow guidelines - Preferred: Based in the Philippines - Prior AI/ML labeling or model evaluation experience is a plus Details: - Rate: $10/hr - Type: Ongoing contract - Location: Remote (VM access provided) - Start: Im...

I’m starting this project from a blank canvas and need a skilled PCB designer who can take my functional requirements (which I’ll share once we kick off) and turn them into clean, production-ready documentation. The board must be a double-layer design populated exclusively with surface-mount parts, so tidy routing, tight footprints and thoughtful component placement are essential. Your first task is to build the full schematic from scratch, validating part choices along the way. Once the schematic is locked, translate it into a compact two-layer layout that respects standard DFM guidelines and any component-specific recommendations in the datasheets. Deliverables I expect: • Complete, well-annotated schematic file (Altium, KiCad or Eagle—whichever you work fastest ...

pcb desinigng around SoC and have experience in VR headset development

I have completed the full electrical design for a 1 MW ground-mounted PV installation on Saipan and now need a licensed Professional Engineer who can officially endorse the overall system design so the project can proceed to permitting. Your stamp must be accepted by the local authority having jurisdiction on Saipan, therefore familiarity with Commonwealth of the Northern Mariana Islands (CNMI) requirements is essential. You will receive a comprehensive design package that includes: • Detailed schematic diagrams • Technical specifications for all major components and protection schemes • Existing compliance reports prepared against local regulations Your task is to review these documents, confirm they satisfy Saipan’s electrical code and any referenced U.S...