Electronics Jobs

I want an ultra-low-power driver board that can run a small E-Ink panel completely untethered. The module must expose both WiFi and Bluetooth so it can receive data from a web API or a local mobile app and refresh the screen on demand. Power autonomy is critical: in addition to a rechargeable battery the board should accept a compact solar cell and scavenge ambient 2.4 GHz energy (WiFi harvesting) to keep the system alive for months without manual charging. Core expectations • Electronics: schematic, component selection and PCB layout optimized for sub-100 µA standby, including the WiFi/BLE SoC, power-path management, solar MPPT, RF-to-DC harvester and battery protection. • Firmware: ESP-IDF/Arduino or similar code that boots, joins WiFi or BLE, pulls a JSON payload, d...

I need a working prototype of a fully-automated roti-making machine that can turn out 100 soft, evenly cooked rotis in 30 minutes while keeping the total build cost under ₹10,000. Durability is my top priority: gears, belts, heating plates, and the overall frame must stand up to continuous use without needing frequent maintenance. Heating flexibility is also essential. The design has to accept both induction coils and standard gas burners so I can switch energy sources as required. From dough portioning and pressing to cooking, puffing, and neatly stacking, every step should run hands-free once ingredients are loaded. To keep the budget realistic, I’m open to clever use of off-the-shelf components, 3-D-printed parts, recycled food-grade stainless, or low-cost electronics such as Ar...

Location: Remote (APAC) | Type: Freelance, Project-Based | Travel: Required (fully covered) This flexible freelance role is ideal for an experienced sourcing professional who enjoys managing supplier relationships, procurement, and negotiations on a project basis. Key Responsibilities •⁠ ⁠Conduct market price research and negotiate pricing, MOQ, lead times, and payment terms •⁠ ⁠⁠Prepare supplier comparisons and sourcing reports •⁠ ⁠Liaise directly with suppliers and internal stakeholders •⁠ ⁠⁠Travel to supplier factories or trade fairs when required for inspections, audits, or in-person negotiations •⁠ ⁠⁠Identify sourcing risks and recommend solutions Must-Have Requirements •⁠ ⁠Solid understanding of electronics and the ability to technically evalu...

My small UK business is ready to move to an AIKO ABC solar array and I need a specialist who can take me from concept to switch-on. Above all, I value peak efficiency and performance, so every recommendation must squeeze the maximum kWh out of limited roof space while keeping operating temperatures low. Scope of work • Bespoke system design: size the array, optimise panel layout, and model annual generation using the latest UK irradiance data. • Equipment specification: AIKO panels are my first choice, but please show comparative numbers for JA Solar so I can see the trade-offs. Pair the array with a smart inverter (we currently favour SolarEdge, Sigenergy or Solis) and add battery storage to capture excess daytime production. • Warranty alignment: 25-year manufactu...

I’m developing a hardware product that blends moving mechanical parts with custom electronics and need a versatile engineer to carry the concept from rough sketches to a small-batch-ready prototype. You will start by reviewing my idea, asking clarifying questions, then turning the requirements into detailed mechanical drawings and electronic schematics. From there, I’ll rely on you to choose appropriate components, model the assemblies, lay out the boards, and iterate until everything fits, functions, and can be manufactured without surprises. Deliverables • Native CAD files (STEP or similar) and clear assembly drawings • Complete electronic design package with schematics, layout, and Gerber files • Consolidated bill of materials with readily available pa...

I need someone physically based in London who can drop into local CeX-“We Buy” branches, pick up the RAM memory modules I specify, and forward them to me in France. You’ll be handling electronics, so I’m counting on you to: • Confirm the exact model and capacity in-store before paying (I’ll send a shortlist and budget per stick). • Keep the receipt and snap a quick photo so I can verify the purchase remotely. • Pack each module in an anti-static sleeve, add bubble wrap, and box it firmly—secure packing is a must. • Ship with a fully tracked service (Royal Mail International Tracked, ParcelForce, or similar) and share the tracking number right away. I reimburse the full store cost plus your fee and postage as soon as I have the...

I'm looking for an expert to design and implement a battery energy storage system specifically for solar power. The primary purpose of this system is to store renewable energy. Key Requirements: - Design an efficient battery energy storage system tailored for solar energy. - High capacity (preferably over 100 kWh). - Ensure system is scalable and durable. - Provide installation and maintenance support. Ideal Skills and Experience: - Expertise in renewable energy systems, especially solar. - Experience with battery storage technologies. - Strong background in energy system design and implementation. - Knowledge of local regulations and safety standards.

IoT Cloud Solution Requirement We have developed a custom PCB-based IoT device consisting of an ESP32 microcontroller, an EC200 GSM (4G) module, an SCD30 sensor for measuring CO₂, temperature, and humidity, and a 5-inch display that shows these sensor readings in real time. We require a complete cloud-based IoT solution for approximately 100 deployed devices. Each device should securely transmit its sensor data to the cloud over the GSM network. The cloud platform should store the data, provide APIs for a mobile application, and support a Grafana dashboard for real-time monitoring and historical analysis. The solution should include secure device communication (MQTT or HTTPS), cloud data storage, user authentication, device management, real-time dashboards, historical reports, alert not...

I need a compact, production-ready PCB for a smart-home product that will sit at the heart of a Thread-based system. The board’s sole critical job is reliable wireless communication, so antenna placement, impedance control, and certification-friendly layout choices are paramount. Form factor is consumer-electronics grade: low profile, quiet on EMI, and ready for automated assembly. I already have a rough block diagram and key component shortlist (MCU with integrated 802.15.4 radio, matching network, voltage regulation, test points). You will turn this into a finished design that a contract manufacturer can drop straight onto their line. Please take the project through: • Schematic capture with all supporting passives and protection • Four-layer (preferred) RF-aware lay...

I have a pair of Diamond-series Wharfedale speakers that I’d like professionally wired to my stereo receiver. The job is straightforward: supply or recommend the correct gauge speaker cable, make clean, secure terminations (banana plugs or bare-wire binding posts—whichever you think gives the best performance), then connect each channel to the receiver and confirm both speakers are playing evenly with no hum or phase issues. I’m not looking for placement advice—just a neat, reliable wired hookup that lets me power up and listen right away.

LOOP every ~2 seconds, for each burner sensor independently: 1. Read current temperature from sensor 2. Add reading to a rolling 15-20 second window of recent readings 3. Compute rate of change over that window 4. IF temperature has plateaued (stayed within ~±2°C band) AND plateau duration > 10-15 seconds AND temperature >= 90°C: -> Trigger "BOILING LIQUID" alert - Sound buzzer: 3 short beeps - Send Blynk push notification: "Burner X approaching boil" - Enter cooldown state for this burner (~2 min, suppress repeat alerts) 5. ELSE IF temperature keeps climbing past ~120°C without plateauing: -> Trigger "DRY PAN / FIRE RISK" alert - Sound buzzer: continuou...

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

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

I’m finalising the hardware for a new piece of wearable technology and now need the firmware that will bring it to life. The sole purpose of this first release is health monitoring, so everything you write should focus on gathering and processing the following signals with medical-grade accuracy and minimal power draw. 2. What Is Already Completed (Do NOT Redo) 2.1 Hardware Design Deliverables (Final) - COMPLETED The following have been completed and reviewed: ●Final schematic design (Altium) ●ESD / EMI protection design ●Power tree & power integrity design ●RF separation strategy (LTE / GNSS / BLE) ●GSM + GNSS + sensor integration plan ●Final 4-layer PCB layout (controlled impedance) ●PCB stack-up definition ●BOM with alternates & footprint expectations ●Power IC replacemen...

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

project title: Build a simple plug-and-play software to control my robot arm + camera over WIFI (AI-ready) Description: I already have the Hardware: -Hiwonder X Arm 1S robotic arm (esp32 inside) -Esp32-s3 Sense camera module (Seed Studio version) -A normal PC to act as the "server" What I need the software to do: 1. I download one program onto my PC, run it and it becomes the server. 2.I flash the arm and the camera once with the files you provide. I power on the arm and camera, they automatically connect to my WIFI and to the server - no manual IP setup, no config files. 4. Any computer or AI on the same WIFI can then send a simple web command like "move arm to x, y, z" and the arm moves. No extra tools required. 5. The camera can take a single snapshot when t...

I’m developing a laboratory‐scale system for scientific research that needs a robust, constant-current pulsed power supply. The unit will take a 380 V, 50 Hz three-phase input and must drive a 2 Ω load with 400 A pulses, translating to about 800 V across the load during each shot. Pulse width has to be fully adjustable from 1 ms to 10 ms, with the operator able to select either a single pulse or a five-pulse burst every minute through software-controlled settings (no manual knobs). The job is split into two clearly defined stages: • Level 1 – Schematic & Magnetics: I need a complete circuit schematic, transformer and inductor calculations, protection strategy, and a verified simulation that proves the design meets current, voltage, and timing targets. Please wo...

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

Title: Mentor Needed: Guide Student Research Team Building an Arabic Sign Language Glove (Step-by-Step, Video Calls) — Phase 1 Budget: $25–$40/hour, total budget $400–$600 for Phase 1 (roughly 12–20 hours) Timeline: 1 month Description: We are a research team working on building a wearable glove that translates Arabic Sign Language into text, with camera-based recognition planned as a future phase. Our team includes high school students and two researchers experienced in quantitative research methodology — but no one on our team has hardware/electronics building experience. We're looking for a freelancer who can act as a hands-on mentor for the hardware and coding side, not just a builder — someone who will walk us through each step and explain ...

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

I’m getting ready to spin up a prototype and need an experienced PCB designer to turn my schematic into a clean, single-layer board that will end up larger than 10 cm × 10 cm. I’ll provide the circuit diagram along with a few placement preferences; from there you’ll handle footprint selection, component placement, manual or auto-routing (whichever gives the most reliable results on a single copper layer), and all the usual design-rule checks. Because this is strictly for prototyping, I’m less worried about space savings and more concerned with trace clarity, manufacturability, and easy debugging. Standard through-hole parts dominate the BOM, but a couple of SMD footprints may appear—nothing exotic. If you normally work in KiCad, Altium Designer, or Eagl...

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

I have a custom board built around an STM32 MCU and I need production-ready firmware that turns it into a reliable embedded control system. The main focus is the button-based user interface: tactile switches, toggle buttons, encoders, potentiometers feed input to the STM, STM should communicate with a windows form application that communicates between peripheral devices on the board and data available in the application. Scope of work • Bring-up of the MCU with STM32CubeIDE and a clear HAL structure. • Implementation of the button reading, debounce, state machine etc for all input methods mentioned above. • Handling of the LED indicators and any SPI, I²C, or UART devices already routed with STM32. • Graceful error handling and low-power housekeeping so the b...

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

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

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

Development of an OCR-Based Industrial Vision System using NVIDIA Jetson Orin Nano About Us We are an industrial automation company specializing in robotic palletizers, case packers, end-of-line automation and custom machinery. We are building a reusable machine vision platform, and this OCR project is Phase 1. Project Objective Develop a robust OCR application for NVIDIA Jetson Orin Nano using a camera to read printed alphanumeric characters. The architecture should be modular and reusable for future barcode, QR, AI inspection and robot guidance applications. Hardware Platform  NVIDIA Jetson Orin Nano Developer Kit  Raspberry Pi HQ Camera (Sony IMX477) or equivalent CSI camera  LED illumination  C-Mount Lens  Future migration to Basler industrial camera Scope of Work Camera Integrat...

I need a complete electronic hardware solution for a therapeutic, drug-delivery device that administers medication via inhalation. The brief covers everything from early-stage architecture to a working, testable prototype. The hardware must precisely control dose release, monitor key parameters such as airflow and temperature, and log usage data for later analysis. Size, power consumption, and patient safety are critical. Expect the design to comply with IEC-60601 and ISO-13485 principles, ready for eventual regulatory submission. To keep the project clear, here is what I expect to receive: • Detailed schematics and PCB layout files (Altium, KiCad, or similar) • Component-level bill of materials with sourcing information • Firmware source code to drive sensors, act...

I need a small, rectangular board built around a CH522T micro-controller. The board will be USB-C powered, so please place a horizontal USB-C receptacle on one of the short edges for both power and data. Core features to integrate • CH522T at the heart of the design • One RGB LED driven directly from the MCU • One tactile push button for user events • A second tactile push button dedicated to entering the programming/boot mode What I expect from you 1. Schematic with all supporting components—clock, reset network, decoupling caps, ESD protection for the USB-C lines 2. PCB layout (Gerber/NC drill, pick-and-place, and a 3D STEP file) ready for immediate fabrication and assembly. 3. Complete BOM with manufacturer part numbers and at least one readil...

I need a compact, reliable humidity-logging solution that can capture readings at regular intervals and send them straight to Google Cloud Platform in near-real time. I am open to microcontrollers such as ESP32, Raspberry Pi, or any low-power alternative, provided the final build can connect over Wi-Fi or LTE and push data securely—ideally through Cloud IoT Core or Pub/Sub—into a time-series bucket I can later analyse with BigQuery or Data Studio. What matters most is that the entire path from sensor to cloud is proven and robust. You are free to suggest the specific humidity sensor, the firmware language (Arduino, MicroPython, C, etc.), and the best authentication method for GCP, as long as you keep power consumption modest and the solution easy to reproduce. Please highligh...

I need assistance reviewing a Gerber file to ensure it is set up correctly. If confirmed, the freelancer will upload the necessary code or firmware via Arduino and solder the pre-produced chip into a PC mouse.

I have an existing PCB patch antenna array that under-performs: its gain is consistently low across the entire operating band. The goal of this project is a measurable performance upgrade—specifically a clear gain improvement—without increasing the overall board size or compromising manufacturability. You will start from my current Gerber files and 3D model, diagnose why the array is losing gain, and then adjust the element geometry, feed network, ground plane, or matching circuitry as needed. Full-wave EM simulation (CST, HFSS, or equivalent) is required to validate each design iteration; Smith-chart impedance plots, realised gain, efficiency, and 3-D radiation patterns must be included in the reports. I am open to adding parasitic patches, EBG structures, or other proven tec...

Please note that below task is only available to local Germans and long-term German residents. I need help tracking down reliable, fairly-priced, second-hand test and measurement instruments here in Germany. The priority units are signal generators, spectrum & network analyzers, EMI test receivers, radio communication testers and phase-noise analyzers from both Rohde & Schwarz and Keysight. Your task is to compile a vetted directory that includes: • Company name and brief background • Physical address (or warehouse location) • Direct contact person, phone, and email • Notes on current inventory, typical grading standards, and any return or warranty terms you uncover • For suppliers without an official website, please include an on-site/company entrance ph...

Project: Smart Device Health Monitoring Unit Project Objective: Develop an embedded device that monitors the health of 3-5 connected devices, displays status locally, stores events, and reports alarms to a server. Technologies Used, Embedded C Linux-based Embedded Systems UART SPI I2C Ethernet/Wi-Fi OLED Module SD Card Module LED Buzzer Summary: - The Smart Device Health Monitoring Unit is an embedded systems project designed to monitor the operational status and health of multiple connected devices through UART communication. The controller periodically polls each device, detects communication failures, displays system status and alarms on an OLED screen, and stores important events in an SD card for future analysis. In case of a device fault or communication timeout, the system gener...

I will supply a complete schematic, dimensioned drawing, and parts list for a small 90 × 190 × 40 mm panel that holds four illuminated push-buttons, two status LEDs, a few relays/diodes, and screw-terminal break-outs for power plus two simple on/off inputs. Every component value, wire gauge, and mechanical placement is already locked down; there is no design work left to do. Your task is purely hands-on: build one fully-functional unit exactly to the drawings. I’d like the circuitry laid out on stripboard (or another point-to-point method you’re comfortable with), all joints soldered, and the harness inside the enclosure bundled neatly for strain relief and easy future service. The case itself should be plastic, as noted in the documents. Before shipping the finis...

I already have a complete schematic for my single-phase energy-monitoring circuit; what I need now is a production-ready PCB layout that faithfully follows it and fits the enclosure I have chosen. The board must match the exact outline and mounting-hole pattern of my reference enclosure, so you will get the enclosure model and mechanical drawings from me on day one. Once the layout is finished, I will need the full Gerber/NC drill set along with the editable design file so I can review trace widths, clearances, and layer stack-up before we send it to fabrication. Deliverables: • Complete, error-free Gerber and drill files • Native design file (Altium, KiCad, or similar—your choice) • Brief design report highlighting key layout decisions and any DRC/DFM notes ...

I need a working prototype that lets me monitor a single-car residential parking spot without running any wiring. The concept is simple: • Hardware: a custom ESP32 board that combines LoRa radio, BLE, and a low-power magnetic (Hall-effect) sensor. It will spend almost all of its life in deep-sleep on two AA batteries and wake only when a car enters, exits, or moves. On every wake-up it must stamp the event with time, append the car’s BLE ID, and shoot that packet over LoRa. • Gateway: a battery-operated LoRa gateway that forwards incoming packets to my home Wi-Fi and then to a mobile or web endpoint of my choice (MQTT, REST, or similar). The key technical goals are extreme power efficiency, reliable car-only detection, and end-to-end message delivery you can demonstrate ...

I need a square wave signal generator with the following specifications: Output Voltage: 12V Frequency Range: 100 kHz to 1 MHz Duty Cycle: Variable Additional Requirements: - 5-step switch for frequency selection - Compact design preferred Ideal Skills & Experience: - Experience with signal generation and electronics design - Proficiency in working with 12V circuits - Knowledge of variable duty cycle configurations - Ability to create compact and functional electronic devices Please provide schematics and ensure reliability at specified frequencies.

We are seeking a Senior Embedded Firmware Engineer or Small Embedded Systems Team to extend and integrate an existing commercial embedded firmware platform for a new hardware revision. This is not a greenfield project. The successful candidate will work with an established embedded C firmware platform and will be responsible for understanding the existing architecture, implementing support for new hardware, integrating new functionality, and delivering production-quality firmware. Responsibilities: Review and understand an existing embedded firmware codebase. Develop and integrate firmware for new hardware components. Implement and debug embedded firmware. Work with RTOS-based embedded systems. Develop and maintain communication interfaces including SPI, I²C, UART/RS-422, and E...

I have a patent-pending concept for an all-in-one bicycle sound system and I’m ready to move from idea to working prototype. The vision is simple: riders enjoy music through speakers that are seamlessly housed inside the frame while a single onboard battery powers both the speakers and a phone-charging port. Core requirements • Audio must stream via Bluetooth connectivity; I’m not looking to add AM/FM or USB inputs at this stage. • Physical button controls should be integrated into the bike so riders can adjust volume, skip tracks, and check battery status without a phone. • The battery pack needs enough capacity to drive the speakers at cruising volume and top up a typical smartphone on longer rides. I will provide sketches of the frame sections wher...

I already have a two-screen interface finished in Squareline for my ESP32-CYD based nervoscope. All component IDs and events are set; what I am missing is the Arduino IDE firmware that brings it to life. Main screen • Shows battery level (%) • Rotates a gauge needle toward whichever of the two RTD probes reports the higher temperature Settings screen • Slider-controlled probe/needle sensitivity • Dark / light theme toggle • Information panel toggle • Screen-brightness control • Temperature unit toggle with Celsius as the default • Sleep-timeout selection Your task 1. Import the finished Squareline project, wire it to LVGL (or the display library you prefer) and produce a clean, well-commented .ino sketch. 2. Read both RTD sensor...

I need a full-stack hardware designer to turn my concept into a manufacturable prototype board built around Rockchip’s RV1126B. The board must carry 2 GB LPDDR4X, a 32 GB eMMC, microSD slot, on-module Wi-Fi/Bluetooth, and a MIPI-DSI connector that will drive a touch display used strictly for user interface and control. Because this is a prototyping/testing build, I am happy to iterate, but the first revision should already be hand-solderable or assembly-ready at common fabs. Key integrations • Two USB 2.0 ports will each host an external Wi-Fi video receiver; please validate bandwidth and power budgets. • An existing STM32F405-based SkyBrain RC subsystem must be brought onto the same PCB (or docked through a high-speed mezzanine) so every one of its functions—...

I’m building a new electronics–driven venture aimed at solving a pressing agricultural challenge in India and I’m looking for a like-minded partner to shape it with me. I’m based in Guwahati, already plugged into a network of Northeast-focused angel investors, and I’ve taken a tech startup from idea to market before, so I understand everything from company registration to early-stage fundraising. My preference is to harness smart electronics—whether that means low-cost sensing, embedded control, IoT devices, or other hardware-software hybrids—to boost yields, cut waste, or otherwise empower small and mid-scale farmers. If you have concepts in precision farming, post-harvest monitoring, or field-level automation, let’s explore them. I’m...

I have a Particle Boron development board and would like to create a compact proof-of-concept monitoring system using two reed switches and a split-core current transformer (CT). The device should continuously monitor the sensors and automatically send an SMS notification to my phone whenever either reed switch changes state or the measured current exceeds or falls below configurable threshold values. The firmware should be developed for Particle Device OS and include cellular SMS functionality. Each alert message should report the current status of both reed switches, the real-time current measurement from the CT sensor, and the exact timestamp when the event occurred. I would also appreciate assistance in determining and configuring appropriate threshold values for both the reed switch ...

I need a compact, battery-powered hour meter that bolts onto a piece of marine equipment, connects to the boat’s Wi-Fi, and silently counts every minute the engine runs. Beyond simple hour logging, it must also sample and report its own battery voltage so I can tell when the internal cell is getting low. The device should push both data points—total run-time and current battery level—to a cloud endpoint I’ll expose. I plan to read everything from a web-based remote dashboard, so no on-device screen is required. An LED or brief buzzer chirp during initial pairing is fine, but the unit will spend most of its life sealed in a damp engine bay. Reliability and low standby draw are therefore critical. Please deliver: • Hardware schematic and bill of materials...

I'm looking for an experienced hardware/embedded engineer to build a first working prototype of a wearable sensor vest for athlete movement and heart rate monitoring. Scope: Sensor 1: GPS + 9-axis IMU (accelerometer, gyroscope, magnetometer) — for speed, distance, direction, and position tracking Sensor 2: Heart rate sensing — open to your recommendation on approach (optical/PPG vs. ECG) for a first prototype, given the vest will be used during physical activity/sport Data transmission: BLE to a nearby tablet/laptop Physical form: lightweight vest/garment insert, worn on the back, under 150g target, minimum 3-4 hour battery life, sweat-resistant What I need from you: Schematic + PCB design Firmware for both sensor sets A basic enclosure (3D printed is fine for this stag...

Developer Required – Visual Positioning System (VPS) for UAVs We are looking for an experienced Computer Vision / AI / Embedded Systems Developer to help us build a Visual Positioning System (VPS) for UAVs and drones. The initial prototype will be developed using NVIDIA Jetson Nano + Camera, with the goal of creating a robust visual navigation system for challenging GPS/GNSS environments. Required Skills * Python / C++ * OpenCV * Computer Vision * NVIDIA Jetson Nano * Optical Flow * Visual-Inertial Odometry (VIO) * SLAM * IMU / Sensor Fusion * ArduPilot / PX4 * MAVLink * UAV / Drone Systems * Linux / Embedded Systems Project Scope * Camera-based visual positioning * Optical Flow implementation * Camera + IMU fusion * VIO development * Real-time position and velocity estima...

I’m building a 150 W power-supply card that will live inside industrial machinery and must keep running in a harsh environment riddled with temperature swings, vibration, dust and electrical noise. The board has to deliver two isolated outputs—24 V for the actuators and 5 V for the control logic—at the same time, with total combined power not less than 150 W. (Discreet preferred, can go with module-based also) I need a complete, production-ready design package: schematic, PCB layout, annotated BOM with orderable parts, and all fabrication files. Thermal modelling, component derating and clearances should reflect industrial-grade safety (IEC/UL standards) and 24/7 duty cycles. I’m fine with Altium, KiCad or OrCAD as long as the files are editable in Altium. Before ...

I'm looking for a skilled developer to code in VHDL or Verilog for an GNSS related jamming resistance project. The primary objective is to enhance resistance to interference. Key Requirements: - Expertise in VHDL/Verilog - Experience signal processing - Ability to improve interference resistance Please include past work in your application. The project needs to be completed within a month.

Freelance Audio / Acoustic Engineer – Speaker Selection & Acoustic Optimization We are looking for an experienced Audio / Acoustic Engineer to work with us on a freelance basis for our IoT smart speaker product. Our product has already been developed, validated, and is currently in the mass manufacturing stage. We have successfully deployed multiple devices in the field. The only remaining work is to finalize the speaker driver selection, acoustic tuning, and enclosure optimization to achieve the highest possible audio quality. Scope of Work * Evaluate our existing IoT speaker hardware and enclosure. * Recommend the most suitable speaker driver(s) based on our product dimensions, amplifier, and power requirements. * Optimize the internal acoustic design to maximize speech clari...