Electronics is an exciting field of engineering that involves circuitry, components, programming, and more. By hiring an Electronics Engineer, businesses and individuals have the power to design and prototype a wide range of gadgets to solve difficult problems. From computers and peripherals to vehicles, Robots and healthcare equipment, electronics experts can create revolutionary products for nearly any industry.

Simply put, an Electronics Engineer can bring life to an idea. With their help, everyday functions are streamlined making life easier for everyone. Accessing remote control equipment just became much easier with Electronics Engineering. Anything from home security cameras to advanced autonomous parking systems are now achievable.

Here’s some projects our expert Electronics Engineers made real:

  • Designing and customizing schematics for DCDC step-down buck converters for specific applications
  • Turning hand drawn sketchs into a clean 2D DWG format schematic
  • Writing Arduino code for controlling thermostats remotely over WiFi or the Cloud
  • Developing custom firmware programs embedded with LCDs, Serial peripherals and WIFI
  • Developing Arduino counter applications for Instagram followers
  • Converting CAD models into Gerber files for the creation of PCBs
  • Programming stepper motors for two axis machines with aNextion 7” GUI script
  • Designing fully functional printed circuit boards in Altium Software
  • Programming Arduino boards for stepper motor control for large scale Sawmills

Are you interested in creating something special? Consider hiring an Electronics Engineer on Freelancer.com to design a new innovative product! With their expertise in automation systems and other advanced technologies, they can bring your product to life faster than ever before while making sure it’s efficient and safe. So why wait? Post your project today!

From 64,548 reviews, clients rate our Electronics Engineers 4.83 out of 5 stars.
Hire Electronics Engineers

Electronics is an exciting field of engineering that involves circuitry, components, programming, and more. By hiring an Electronics Engineer, businesses and individuals have the power to design and prototype a wide range of gadgets to solve difficult problems. From computers and peripherals to vehicles, Robots and healthcare equipment, electronics experts can create revolutionary products for nearly any industry.

Simply put, an Electronics Engineer can bring life to an idea. With their help, everyday functions are streamlined making life easier for everyone. Accessing remote control equipment just became much easier with Electronics Engineering. Anything from home security cameras to advanced autonomous parking systems are now achievable.

Here’s some projects our expert Electronics Engineers made real:

  • Designing and customizing schematics for DCDC step-down buck converters for specific applications
  • Turning hand drawn sketchs into a clean 2D DWG format schematic
  • Writing Arduino code for controlling thermostats remotely over WiFi or the Cloud
  • Developing custom firmware programs embedded with LCDs, Serial peripherals and WIFI
  • Developing Arduino counter applications for Instagram followers
  • Converting CAD models into Gerber files for the creation of PCBs
  • Programming stepper motors for two axis machines with aNextion 7” GUI script
  • Designing fully functional printed circuit boards in Altium Software
  • Programming Arduino boards for stepper motor control for large scale Sawmills

Are you interested in creating something special? Consider hiring an Electronics Engineer on Freelancer.com to design a new innovative product! With their expertise in automation systems and other advanced technologies, they can bring your product to life faster than ever before while making sure it’s efficient and safe. So why wait? Post your project today!

From 64,548 reviews, clients rate our Electronics Engineers 4.83 out of 5 stars.
Hire Electronics Engineers

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    100 jobs found

    I new to design a PCB dedicated to processing several signals and starting a device based on a set number of conditions. I would like to be able to modify those parameters from a cloud based or simple web interface. The board should handles both analog and digital. I expect all to be digital signals but just in case. It should basically handle, temperature, humidity and time of day. Deliverables 1. Compiled firmware binaries plus full, buildable project files 2. Clear inline comments and a concise README explaining build steps and pin mappings 3. A short test report that documents signal-integrity measurements and confirms the module meets the agreed specs. 4, Plus device recommendation and also help on setting up. I have an idea, but I am a genetic engineer. I am OK with basi...

    $431 Average bid
    $431 Avg Bid
    17 bids

    I’m kicking off a multi-phase R&D effort devoted to the design and development of cutting-edge microstrip antennas. The overarching targets are straightforward: boost usable bandwidth while simultaneously lifting signal strength, all without compromising the core advantages of printed technology. Phase by phase, I’ll be iterating from theoretical models through to lab-verified prototypes. You’ll take the lead on concept generation, electromagnetic simulation (HFSS, CST or an equivalent full-wave solver), layout refinement, and hand-over for fabrication. Once hardware comes back, we’ll compare measured S-parameters and radiation patterns against the simulated baseline, fine-tune, and document lessons learned for the next spin. Key deliverables • Simulation...

    $92 Average bid
    $92 Avg Bid
    4 bids

    I already have the full schematic and the finished PCB files for a board that combines an ESP module with a PIC18F microcontroller. What I’m missing is a clear, practical explanation of how everything talks to each other, especially over UART, and how that interaction is implemented on the physical board. Here is what I need from you: • A step-by-step walkthrough of the signal paths that handle UART traffic between the ESP and the PIC18F, including any level-shifting, buffering, or hand-shake lines that support the link. • A guided tour of the PCB layout that shows where those signals travel—layer changes, vias, ground references, decoupling, and any routing choices that affect integrity or noise. • Simple notes on any supporting circuitry (power rails, ...

    $66 Average bid
    $66 Avg Bid
    4 bids

    I've already built some prototypes of a circuit capable of switching a single 230 V, 16–30 A line to 4, 8, or 12 outputs—without power loss—but none of them have reached the standards I expect. I have schematics, calculations, thermal measurements, and test logs: enough material to clarify every technical detail and speed up your work. I need a senior designer who can transform all this into a final solution, complete with ESP32 firmware, a multilayer PCB (4 or 6 layers, JLCPCB production - 3oz copper), and an accurate and documented simulation before production. Technical requirements to be met: • Maximum energy efficiency, component protection, and precision switching under load. • Integrated remote control, real-time monitoring, and an alarm system. &b...

    $584 Average bid
    $584 Avg Bid
    37 bids

    I already have the full schematic and the finished PCB files for a board that combines an ESP module with a PIC18F microcontroller. What I’m missing is a clear, practical explanation of how everything talks to each other, especially over UART, and how that interaction is implemented on the physical board. Here is what I need from you: • A step-by-step walkthrough of the signal paths that handle UART traffic between the ESP and the PIC18F, including any level-shifting, buffering, or hand-shake lines that support the link. • A guided tour of the PCB layout that shows where those signals travel—layer changes, vias, ground references, decoupling, and any routing choices that affect integrity or noise. • Simple notes on any supporting circuitry (power rails, ...

    $136 Average bid
    $136 Avg Bid
    12 bids

    I need solution for three questions electronics MATLAB/simulations file attached 1.35 1.36 1.39 Only induvial experts and tutors no agencies After this i will have so many projects Fair price flexible with time good availability of time

    $90 Average bid
    $90 Avg Bid
    12 bids

    I need a focused research effort that looks at satellite-communication antennas from three angles at once: maximising signal strength and quality, mapping frequency-band usage, and refining antenna design and materials. The outcome should give me clear, data-backed guidance I can hand straight to my hardware team. Scope You will survey current literature and patents, run electromagnetic simulations (HFSS, CST, FEKO or similar), and translate the findings into practical design recommendations. Emphasis is on L-, S- or Ku-band performance; however, if your analysis uncovers a better-suited band, flag it and justify the choice. Deliverables • Concise comparative report (PDF) • Simulation files with setup notes • Performance charts showing gain, VSWR, efficiency and li...

    $104 Average bid
    $104 Avg Bid
    5 bids
    Smart Mouse Trap Development
    6 days left
    Verified

    I'm seeking an engineer to create an intelligent mouse trap focused on monitoring and alerting. The trap should utilize a motion sensor for mouse detection and an actuator to trigger a trap upon detection. Key Requirements: - Motion sensor for detection - Actuator to trigger trap - Notification system for alerts Ideal Skills and Experience: - Experience with sensors and actuators - Knowledge in IoT and notification systems - Background in hardware development and prototyping Please share your relevant experience and approach.

    $440 Average bid
    $440 Avg Bid
    66 bids

    I’m replacing my existing pool circulation unit with a single-speed pump that I already have on site, along with all the fittings, unions, and electrical hardware required. The pad is clear, the plumbing is exposed, and access from the driveway to the equipment area is wide open, so getting tools and materials in place will be straightforward. What I need is a qualified installer who can: • Plumb the new pump into the current PVC line, ensuring airtight, leak-free unions • Make the electrical connection to the existing breaker, verify correct voltage, and bond/ground to code • Prime, test-run, and fine-tune the flow so the system reaches full pressure without cavitation • Leave the pad clean and walk me through basic operation once everything is running sm...

    $21 - $179
    Local
    $21 - $179
    0 bids

    I’m building a smart irrigation setup that links a Raspberry Pi edge server with several ESP32 nodes in the field. Each ESP32 gathers data from soil-moisture probes, compact weather boards (temperature, humidity, barometric pressure), and inline flow meters, then reports everything wirelessly to the Pi for processing. Here’s what I need from you: • Python (Raspberry Pi) and MicroPython/C++ (ESP32) code that ingests the raw sensor streams, pushes them through an on-device model, and decides—within seconds—whether to start or stop the main pump and which solenoid valves to open. • An ML pipeline: training notebooks, a lightweight model (TensorFlow Lite or similar) and the inference wrapper that runs locally. The model must act on current soil-moisture rea...

    $1175 Average bid
    $1175 Avg Bid
    54 bids

    I am putting together a self-funded, individual project that calls for a fully specified gas-chromatography system fitted with both a Thermal Conductivity Detector (TCD) and a Flame Ionization Detector (FID). The goal is to separate and quantify light hydrocarbons—specifically methane, ethane, ethylene, acetylene and closely related species—in liquid samples that will be injected directly or via headspace. What I need from you: • An end-to-end design covering column selection, carrier gas choice, oven programming and detector configuration so that both TCD and FID work in tandem without signal overlap. • A step-by-step method for sample preparation and injection that delivers sharp peaks and reliable quantitation for the compounds listed above. • Calib...

    $2514 Average bid
    $2514 Avg Bid
    4 bids

    I need a plastic enclosure designed for a screen-free WiFi kids phone. The design should be injection moulding ready and include internal layouts for PCB, speaker, and silicone rubber buttons. Requirements: - DFM (Design for Manufacturing) is essential. - Deliverables should include STEP files and production drawings. - Enclosure material: ABS - Finish: Matte - Buttons: Silicone rubber buttons Ideal Skills and Experience: - Experience in consumer electronics design - Proficient in creating DFM-ready designs - Strong knowledge of injection moulding processes - Expertise in producing detailed STEP files and production drawings Please share relevant portfolios with your bids.

    $690 Average bid
    $690 Avg Bid
    88 bids

    I need a custom ELRS (ExpressLRS) solution for drone control, utilizing an STM microcontroller instead of the original MCU. Key requirements: - Improved range - Enhanced security - Dual band - Mesh networking capabilities Ideal skills and experience: - Proficiency in STM microcontrollers, especially STM32 - Strong background in RF communication and protocols - Experience with drone control systems - Knowledge of security implementations in wireless networks - Familiarity with mesh networking technology Please provide relevant experience in your bids.

    $3917 Average bid
    $3917 Avg Bid
    29 bids

    I need an experienced electrician for industrial installation work. The task involves installing machinery and equipment in an industrial setting. Ideal Skills and Experience: - Experience in industrial electrical work - Expertise in machinery and equipment installation - Knowledge of safety regulations and compliance - Ability to read and interpret electrical blueprints and schematics - Problem-solving skills and attention to detail - Relevant certifications and licenses

    $150 Average bid
    $150 Avg Bid
    17 bids

    I need a compact, reliable flex-PCB designed for an industrial setting that is subject to continuous high-vibration, ambient temp extremes, and moisture. The board’s sole payload will be an embedded vision sensor; no microcontrollers or large passives are planned at this stage. My priority is to ensure signal integrity and mechanical robustness in this challenging environment while keeping the layout as thin and lightweight as practical. Here is what I expect from you: • A short consultation (call or chat) to confirm sensor footprint data, required bend radius, connector choice and stack-up. • Schematic capture, impedance-controlled flex-rigid or pure-flex stack-up proposal, and a final layout that factors in strain-relief, tear-stops and anchoring points suited to hi...

    $250 - $750
    Urgent Sealed
    $250 - $750
    56 bids

    I'm looking for an Arduino code that will trigger RGB LEDs to change color based on a pulse rotary dial input. Requirements: - Use of a pulse rotary dial - RGB LEDs whose colors will be controlled by the rotary dial input Ideal Skills and Experience: - Proficient in Arduino programming - Experience with rotary dials and RGB LED control - Familiarity with electronics and circuit design

    $442 Average bid
    $442 Avg Bid
    91 bids

    Hello , I have a cabled weather station ready to go, but I need an experienced hand with the physical installation side only. The job covers everything from mounting the sensors and console, running and securing the cable, to making sure connections are weather-proofed, grounded, and reading correctly once powered up. Brand is flexible—I simply need someone familiar with the usual hardware found in systems such as Davis Instruments, AcuRite, La Crosse, or similar. Only serious freelancer Auto bids not good Thank you

    $135 Average bid
    $135 Avg Bid
    5 bids
    Cabled Weather Station Setup
    6 days left
    Verified

    I have a cabled weather station ready to go, but I need an experienced hand with the physical installation side only. The job covers everything from mounting the sensors and console, running and securing the cable, to making sure connections are weather-proofed, grounded, and reading correctly once powered up. Brand is flexible—I simply need someone familiar with the usual hardware found in systems such as Davis Instruments, AcuRite, La Crosse, or similar. Key Deliverables • Sensors, mast, and console solidly mounted in their designated locations • All cables routed neatly, protected from the elements, and correctly terminated • Grounding and surge protection in place where required • Final power-up and verification that the station is delivering clean, sta...

    $114 Average bid
    $114 Avg Bid
    3 bids

    I'm seeking an experienced product designer to develop an ultrasonic scent diffuser. Key Features: - Timer settings - LED lighting - Mist intensity control Ideal Skills and Experience: - Proven experience in designing consumer electronics, particularly scent diffusers - Strong understanding of ultrasonic technology - Expertise in integrating LED lighting and timer mechanisms - Ability to create intuitive user interfaces Please include relevant experience in your application.

    $89 Average bid
    $89 Avg Bid
    6 bids

    I’m putting together a compact two–tier electronic enclosure and I need the complete assembly modelled in Shapr3D so I can open, review, and tweak the layout myself. Here’s the flow of work: • You’ll source accurate 3 D models for several off-the-shelf parts plus one OEM component. I already have its detailed specs in PDF, which I’ll forward immediately. • Once the parts are ready, you’ll position them inside a base housing roughly 10 in × 9 in × 2.5 in, then add a second enclosure that stacks neatly on top. • Please illustrate the electrical and fluid links: a triple-lumen 1⁄16″ ID umbilical running between the tiers, and wiring that ties a water-level sensor, a peristaltic pump, and an Arduino-class controlle...

    $407 Average bid
    NDA
    $407 Avg Bid
    68 bids

    I’m developing a compact medical-grade board that will sit at the heart of a new vital-signs monitor. The PCB must reliably acquire and process heart rate, blood pressure, and respiratory rate signals, then pass the data to a microcontroller for further analysis and display. Here’s what I need from you: • Complete schematic capture based on my sensor and MCU selections • Four-layer board layout optimized for low-noise biomedical signals (Altium or KiCad preferred) • Manufacture-ready Gerber files, pick-and-place data, and a clearly structured BOM with medical-grade component choices • Design reviews at schematic and pre-release layout stages so we can make sure the board meets IEC 60601-1/-2 spacing, leakage, and isolation requirements • Brief ...

    $107 Average bid
    $107 Avg Bid
    7 bids

    I am looking for someone to develop hardware on my request, it will be simple projects as seen on you tube. I am interested to know hourly rates, if I provide the hardware and code they would just need to wire them up. Would be nice to have someone from India NCR.

    $13 / hr Average bid
    $13 / hr Avg Bid
    29 bids

    I need an expert to establish communication between two Siemens S7-1500 PLCs using OPC UA. Requirements: - Send digital, analog, and alarm signals. - Control a program on the server PLC via the client PLC. - Transmit maintenance data. Ideal skills and experience: - Experience with Siemens S7-1500 and OPC UA. - Proficiency in handling digital, analog, and alarm signals. - Strong background in PLC programming and communication protocols. Please provide relevant work experience in your bids.

    $137 Average bid
    $137 Avg Bid
    42 bids

    I need a PCB designed specifically for a one-off project; it is not part of a commercial product line, so flexibility and creativity are welcome. The board will carry only analog circuitry—no digital sections—centred around operational amplifiers and a small signal-processing stage I will detail once we start. What I will supply: the schematic (PDF or KiCad), preferred footprints, and basic mechanical constraints. What I need from you: a clean, manufacturable layout with proper analog grounding practices, complete Gerber/ODB++ files, a reviewed BOM, and the original design file so I can revise it later if needed. Please aim for standard two-layer construction unless you advise otherwise for noise reasons. Acceptance will be based on: • DRC-clean files that import i...

    $14 Average bid
    $14 Avg Bid
    10 bids

    The task is to design a compact PCB that drops straight into an SCX 1/32 car so it can run on a digital track. I want the board to read the track’s reed-sensor signal, let me assign any of 20 unique car IDs in firmware, and expose a surface-mount USB-C port on the edge for easy flashing once the body shell is back on. Size must stay close to the original analogue board footprint (about 24 × 18 mm, height under 6 mm) but I can adapt mounting holes or connector positions if you have a cleaner layout idea. Power comes from the standard track pickups (nominal 14–18 V DC), so include an efficient buck or LDO to feed the microcontroller and reed circuitry. I haven’t locked the MCU yet; pick anything small, inexpensive, and easy to program—ATmega, STM32, ESP32, or s...

    $149 Average bid
    $149 Avg Bid
    27 bids

    I’ve drafted a single-layer board in Altium Designer and now need a seasoned set of eyes to run thorough simulations before I commit to building the first prototype. Your task is to import my project, verify the stack-up and component models, and perform all relevant electrical, thermal, and rule-check simulations available in Altium. Key goals • Confirm that signal integrity and power distribution meet design intent. • Flag any DRC or manufacturing issues early so I can correct them before fabrication. • Produce a concise simulation report summarizing the tests run, key plots or screenshots, and your recommendations. Deliverables 1. Updated Altium project files with all simulation settings preserved. 2. PDF or DOC report of findings and suggested fixes. ...

    $297 Average bid
    $297 Avg Bid
    23 bids

    I need a detailed electrical plan for installing an EV charger in the garage of a new residential home, as required by council regulations. The home has a three-phase electrical supply. Requirements: - Compliance with Woollahra council regulations For condition 14 (Item 37) that requests “electrical plans of all off street parking demonstrating capacity for Level 2 (single phase, 7kw power) charging point” - Detailed schematics for three-phase supply - Specifications for EV charger installation in garage Ideal Skills and Experience: - Experience with residential electrical planning - Knowledge of council requirements for EV charger installations - Familiarity with three-phase electrical systems

    $291 Average bid
    $291 Avg Bid
    48 bids

    I need a compact, production-ready circuit that brings reliable wireless communication to a new consumer-electronics device. The work begins with schematic capture and component selection, moves through PCB layout, and finishes with ready-to-manufacture Gerbers, a complete BOM, and clear test guidelines. The radio link is the heart of the design, so careful RF layout, antenna matching, and regulatory-compliant power levels are essential. Bluetooth LE is my preferred protocol, though I am open to Wi-Fi or other 2.4 GHz solutions if you can demonstrate lower cost or better battery life without sacrificing performance. Please plan on: • Delivering editable design files in Altium, KiCad, or Eagle, plus PDFs for quick review • Calling out any critical components with long le...

    $37 Average bid
    $37 Avg Bid
    18 bids

    I need a concise Python 3 script that will run on a Raspberry Pi 5 and do the following: • Watch a single GPIO input line for the HIGH digital signal coming from my Sony camera’s built-in AI output. • As soon as that digital signal is detected, drive a separate GPIO output that energises a small 5 V solenoid for five seconds, then automatically switch it off. • Debounce or otherwise ignore any further triggers until the five-second period is complete. The camera only provides a digital signal, so no protocol parsing is required—plain HIGH/LOW logic on the GPIO pin is all I need. The trigger itself must use the Pi’s native GPIO header rather than USB or networking. I haven’t fixed the exact GPIO numbers yet; feel free to suggest sensible default...

    $26 / hr Average bid
    $26 / hr Avg Bid
    122 bids

    I’m updating the firmware for an STM32-based design and need an experienced C++ developer who is comfortable inside STM32CubeIDE. The codebase already compiles and runs on the microcontroller, but several features still require clean, well-structured implementation, performance tuning and thorough testing directly on the hardware. You’ll be working exclusively with STM32 microcontrollers; no FPGA or other targets are involved. Please be ready to pull the current CubeIDE project from my repository, build it as-is, and then extend it in C++17 (or later) while respecting the existing HAL layer and project structure. Deliverables • Updated CubeIDE project with the new or fixed functionality fully integrated • Clear build instructions and a short change log so I can ...

    $287 Average bid
    $287 Avg Bid
    21 bids
    12V Electrical Panel Design
    5 days left
    Verified

    I'm seeking an experienced designer to create a 12V electrical panel for installation on the interior of a canopy. The panel will power lights, a fridge, and charging ports. Key requirements: - Incorporate a fuse box and circuit breakers for protection - Design must fit securely and function efficiently within the canopy interior Ideal skills and experience: - Expertise in 12V electrical systems - Experience with designing electrical panels - Knowledge of safety standards and protection mechanisms

    $37 / hr Average bid
    $37 / hr Avg Bid
    15 bids

    I need a Zigbee Green Power device for indoor lighting control. The primary features required are on/off switching and dimming. Key requirements: - Zigbee Green Power technology - Indoor installation - On/off switching and dimming capabilities Ideal skills and experience: - Familiarity with Zigbee technology - Experience in lighting control systems - Electrical installation knowledge for indoor environments

    $761 Average bid
    $761 Avg Bid
    55 bids

    The embedded system comprises 2 STM32 boards connected to their own 7 sensors, 1 motor, and 3 relays. Each is connected to a central Raspberry Pi 4 board. The RIGHT STM32 board also has a TFT ST7789 2inch display. The Raspberry Pi has its own 5-inch display (connected via HDMI) and is connected to a battery BMS via UART and controls the main ON/OFF switching of the exoskeleton system driven via a 48V 10A relay. The Raspberry Pi also controls the operation of a 5V air-pump via a relay able to deliver 1.5A. 1. Graphical user interface (GUI) developed for the STM32 to drive the ST7789 display. The detailed requirements for this GUI are presented in Figure 3. 2. GUI developed for the Raspberry Pi display. The detailed requirements for this GUI are the same as for STM32. 3. Software for...

    $193 Average bid
    $193 Avg Bid
    11 bids

    I’m building a brand-new tracker aimed at hunters and other outdoor enthusiasts who need to see the location of their harvested game is in real time. The core requirement is straightforward: reliable location tracking that appears instantly on a smartphone and must be as small and light as possible. The idea is that a bow hunter can easily track and find their game after a shot is taken. This would ideally be the most ethical form of locating an animal to ensure that it is not gone to waste. Here’s the functionality I have in mind: • The device gathers GPS coordinates, pushes them to the user’s phone over low-energy Bluetooth, and refreshes quickly enough to feel truly live. • When Bluetooth isn’t possible or range is lost, a secondary short-range...

    $558 Average bid
    $558 Avg Bid
    79 bids

    I need help recalibrating a Linak linear actuator LA36. The actuator is experiencing inconsistent movement during both extension and retraction. I’ve already checked the power supply and inspected the wiring connections, but the issue persists. Ideal skills and experience: - Experience with Linak actuators, particularly the LA36 model - Strong troubleshooting skills in linear actuators - Electrical knowledge to identify and fix calibration issues

    $440 Average bid
    Local
    $440 Avg Bid
    10 bids

    Project: ESP32-Based Talking Plush Toy – Prototype Development Project Overview I’m building a screen-free talking plush toy for kids (3–7 years). The goal is to create a working prototype (V1) that demonstrates: Calm audio interaction Simple button & Bluetooth (BLE) control Safe, battery-powered operation This is prototype-only, not mass production. Scope of Work The freelancer will: Build a working ESP32-based prototype Implement audio playback (pre-recorded voice files) Support button-based triggers Implement BLE connectivity (basic commands from phone) Ensure safe power & insulation for a prototype Share code + wiring diagram + build instructions Core Features (V1) ESP32 dev board Pre-recorded audio playback (stories, phrases) 1–2 physical buttons BLE co...

    $89 Average bid
    $89 Avg Bid
    7 bids

    I need an ebike throttle limiter that sits between the ebike throttle ( running 5v red, black (gnd) and white control wire and its controller : (DO NOT CUT these) Throttle RED (+5V) ------------------------------------ Controller RED (+5V) Throttle BLACK (GND) ------------------------------------ Controller BLACK (GND) (ONLY cut/switch the WHITE signal) Throttle WHITE (signal) ----+-----------------------------> Switch T1 | +----[ Rseries 1kΩ ]----+-----> Switch T2 = LIMIT NODE | +-----> Pot BLACK (wiper) Pot RED ---------------------------------------------> Controller...

    $171 Average bid
    $171 Avg Bid
    35 bids

    I need an industrial engineering specialist with experience to help me write the case studies assignments I have for my PhD classes, due to work I will not be able to wrire them myself but I will provide all the key topics and details

    $210 Average bid
    $210 Avg Bid
    62 bids

    I'm looking for somebody who can fix my pcb, all it has are leds on top

    $23 Average bid
    $23 Avg Bid
    50 bids

    I’m building a smart irrigation setup that links a Raspberry Pi edge server with several ESP32 nodes in the field. Each ESP32 gathers data from soil-moisture probes, compact weather boards (temperature, humidity, barometric pressure), and inline flow meters, then reports everything wirelessly to the Pi for processing. Here’s what I need from you: • Python (Raspberry Pi) and MicroPython/C++ (ESP32) code that ingests the raw sensor streams, pushes them through an on-device model, and decides—within seconds—whether to start or stop the main pump and which solenoid valves to open. • An ML pipeline: training notebooks, a lightweight model (TensorFlow Lite or similar) and the inference wrapper that runs locally. The model must act on current soil-moisture rea...

    $493 Average bid
    $493 Avg Bid
    135 bids

    I want to build a compact, two-way Bluetooth audio interface for a HAM radio. The core goal is a 2-way bridge between the radio and a realtime camera running on a linux board via buletooth. Digital or analog volume adjustment is needed Device must be battery and/or 12V DC operated, with DC12V charging battery if present What I need: • Full-duplex transmit and receive so both the radio’s microphone and speaker lines travel over Bluetooth. • A design that plays nicely with typical HAM radio mic/headphone levels. • Optional Radio PTT Sense to mute microphone input if PTT button not pressed • Stable pairing, clear voice quality, and minimal latency. Please provide: 1. Schematic and bill of materials (module choice is up to you; CSR, ESP32, or similar is fine). 2...

    $254 Average bid
    $254 Avg Bid
    44 bids

    I’m developing a proof-of-concept that relies on Frequency Modulated Continuous Wave (FMCW) signals and need an experienced signal-processing engineer to turn my raw mixer outputs into actionable information. The scope covers the full digital chain—calibration, windowing, FFTs, range-Doppler generation, and target extraction techniques such as CFAR or similar adaptive thresholding. Code may be written in MATLAB or Python; please keep it modular so I can swap parameters and integrate rapidly with my existing acquisition software. To keep expectations clear, here’s what I would like handed over: • Well-commented source code that processes sample FMCW data from raw time-domain files through to range-Doppler (and, if practical within schedule, angle) outputs. • ...

    $153 Average bid
    $153 Avg Bid
    45 bids

    I'm seeking an experienced PLC programmer to convert my existing SLC500 process control system to a Click PLC. The SLC500 is obsolete, and I need to ensure continuity in process control with a modern solution. Key Requirements: - Migrate all existing code and logic from SLC500 to Click PLC. - Ensure that the Click PLC can replicate all current process control functionalities. Ideal Skills and Experience: - Proficiency in both SLC500 and Click PLC systems. - Strong background in process control automation. - Experience with PLC programming and code migration. - Attention to detail to ensure no loss of functionality during the transition. Please provide examples of similar work done and ensure you have the necessary skills to handle this migration seamlessly.

    $29 / hr Average bid
    $29 / hr Avg Bid
    62 bids

    Project: We are a looking for a very specific person, an actuation expert who has the following experience and credentials: - Is technical. Has himself or herself designed high-performance actuators. - The above experience must include VCMs (voice coil motors), e.g. for moving lens groups. - You must have commercial experience in a tier-1 consumer electronics company. An ideal person would be someone with 10+ years of experience, who now does freelance expert consulting (e.g. has retired or is semi-retired). If you are in the 0.1% of people who fit the above description, please continue reading. If not, there is no need (we will screen out candidates who are not a fit, you will just be using up your and our time). We have a need to evaluate smallest-possible VCM (or other actuators) fo...

    $110 / hr Average bid
    $110 / hr Avg Bid
    18 bids

    I already have a working ESP32 design in KiCad and need it brought to its final, production-ready form for a commercial product that must clear CE. The job centres on three key changes: swapping the Micro-USB for a USB-C connector, integrating a Li-Po charging IC, and tweaking the board outline and component placement so everything fits a new enclosure while preserving optimal antenna clearance, decoupling, and thermal performance. Please keep manufacturing constraints in mind and pass every KiCad DRC before delivery. Timeline is tight three days from award so I’m looking for someone who can move quickly yet meticulously. Deliverables • Updated KiCad project (schematic and PCB) • Fabrication package: Gerbers, drill files, BOM, and pick-and-place (CPL) ready for PCB...

    $153 Average bid
    $153 Avg Bid
    50 bids

    I need help building a working prototype of a small interactive toy. The prototype requires: A pop-up mechanism (using solenoids, springs, and/or small motors). Integration with Raspberry Pi or Arduino for control. Wiring/programming to operate the mechanism. A simple phone/web app to trigger the toy remotely. Requirements: Experience with mechanical design and prototyping. Hands-on skills with Raspberry Pi/Arduino electronics. Must show past project work (photos, CAD, or GitHub). Signed NDA. Deliverable: A working physical prototype (not just design files) that demonstrates the pop-up mechanism controlled by Raspberry Pi/Arduino. Budget: Budget will be discussed based on scope and experience. Please provide: What’s your estimated cost? How did you arrive at that numbe...

    $1052 Average bid
    $1052 Avg Bid
    148 bids
    Zynq RF Board Size Reduction
    4 days left
    Verified

    I am looking for an experienced RF hardware designer to consolidate and miniaturize an existing RF system based on a MYIR Zynq-7020 board. The current setup includes: 1. MYIR Zynq-7020 board (fixed, no redesign) 2. Adapter board 3. Two separate RF transmitter boards The goal is to integrate the two RF boards and the Adapter board into a single compact adapter board, while keeping the existing electrical interfaces to the MYIR board unchanged and minimizing or avoiding FPGA/firmware changes as much as possible. Scope of Work (High Level) - Integrate two RF transmit chains on one board - Use a shared reference oscillator and PLL for both RF paths - Replace discrete RF filters with compact off-the-shelf RF filters - Replace legacy power regulators with modern, small LDOs - Add RF routing op...

    $650 Average bid
    NDA
    $650 Avg Bid
    26 bids

    I’m building a mini ventilator—an embedded medical device combining mechanical and electrical subsystems—and I’m looking for a dependable partner who can translate detailed specifications into working hardware and firmware. Your responsibilities will include hardware design, firmware development, and end-to-end integration and testing. How we’ll work: • I’ll provide clear, itemized requirements; you’ll convert them into schematics, PCB layouts, and clean, well-documented firmware. • We’ll maintain a tight feedback loop with regular progress updates, clarification where needed, and rapid iterations after reviews. • Accuracy, reliability, timelines, and strict confidentiality are non-negotiable. Expected deliverables (as appli...

    $102 Average bid
    $102 Avg Bid
    10 bids

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