Firmware jobs

...sensor (BME280) for temperature/humidity correction of the speed of sound. Battery-powered with a rechargeable Li-Po cell and power management. What needs to be done: Mechanical design (foldable diamond frame, enclosures, microphone mounts) Electronics design (schematics & PCB layout for satellite boards and the main board) Firmware for the STM32s (multi-channel I2S DMA, shock-wave detection, sub-sample time interpolation) Firmware for the ESP32 (TDOA solver, hit projection, WiFi/LoRa communication, calibration) System integration and validation...

...whichever rack brand or model you feel best suits professional broadcast environments; I have no fixed preference and am happy to hear suggestions if a particular frame, power distribution unit or cable-management accessory will make servicing easier down the line. Scope of work • Create an inventory of every encoder, decoder and switch, noting current port assignments, power requirements and firmware versions. • Label and disconnect all cabling methodically, documenting each step so the system can be restored quickly if needed. • Mount the equipment in the new rack, route power and network neatly, and balance airflow for proper cooling. • Reconnect and test every video, audio and data path, confirming that on-air feeds remain stable with zero packet ...

I’m working with the open-source HandHeldLegend/hoja-device-fw project that targets the Raspberry Pi RP2040. I already have a short code snippet that defines a frame-perfect macro intended for gaming cheats: when the physical Y button is pressed the firmware must • hold Y for exactly 16 ms (one frame), • release it for 16 ms, • then push the Right Analog/C-Stick fully downward for another 16 ms. Nothing else in the firmware should change. What I need from you 1. Pull the repository, drop the snippet into the correct input pipeline so the macro cleanly intercepts the Y press without introducing latency or breaking other inputs. 2. Compile the project in a proven RP2040/Pico SDK environment (CMake, gcc-arm-none-eabi, etc.) and return a ready-t...

Project Title Design a Logic Gate Based Non-Programmable Sensor-Actuator PCB — Prototype Development Project Overview I need a custom electronics board designed and prototyped around a combination of Logic Gates, built for a non-programmable, hardware-only sensor-to-actuator decision system (no microcontroller/firmware involved). The board should be robust, classroom/hobbyist-safe, and ready for small-batch prototyping. Concept The core idea is a hardware logic control board where inputs (sensors which uses only digital signal like IR sensor, PIR sensor, LDR sensor etc.) and outputs (actuators/dc motors, LED and buzzer) are combined using any gate logic — with no coding or programming required. Detailed Requirements 1. Power Requirements Power input via a 9V b...

I have an ESP32 DevKit V1 (CP2102) already wired to a PZEM-004T V3, an ADS1115 16-bit ADC, one SCT-013-010 CT sensor, and three DS18B20 waterproof probes. With this hardware I need working firmware and a simple cloud-hosted dashboard that can: • Detect and log the compressor state (ON/OFF). • Detect, log, and quantify both the indoor fan status(ON/OFF) as well as fan current or speed. • Read room, inlet, and outlet temperatures. • Calculate hourly power consumption (kWh) and total run-time for the compressor and each fan. • Push every reading over Wi-Fi using pure HTTP requests formatted as JSON. On the front end I want a live web dashboard that combines graphs with raw tables so I can flip between trends and exact values. The visuals should upda...

... Key points • Both modules must plug in through female pin headers so I can swap them out without touching a soldering iron.
 • The board will take 5 V at up to 2 A from a phone-style USB charger. Please add the capacitors, filtering, and any regulators you feel are necessary to keep both MCUs rock-solid.
 • A dual-colour LED driven by the ESP32 should show green or red according to my firmware. Bring the LED out to the edge of the board for easy viewing and break the control pin out to a nearby test pad.
 • I chose a compact layout, so keep the footprint tight while still leaving the ESP32’s antenna area and the Nice!Nano’s battery pads clear.
 • Exposed pin headers for additional connections and the LED indicator need to remain ea...

...build a custom 1-DOF haptic syringe device Select and integrate suitable motor, driver, controller, and sensors Develop firmware for real-time force feedback Ensure smooth, responsive haptic performance Software Develop in Unity (preferred), Unreal Engine, or native C++ Real-time communication between hardware and software Map insertion depth to programmable force feedback Implement editable force curves using a text/configuration file Create a simple calibration interface Graphics Moderate-detail 3D scene Tissue layers: Skin Fat Muscle Bone Realistic PBR textures Needle insertion visualization Deliverables Complete source code Unity/Unreal project (or native C++) Firmware source code CAD files (if applicable) Electronics schematics Bill of Materials (BOM) Motor and sensor...

...charging/programming * Adjustable mounting bracket * Epoxy enclosure (carefull with usb) The firmware shall: * Receive LoRaWAN packets * Record Device ID, RSSI, SNR and timestamp * Forward all receptions to a server over Wi-Fi (HTTP, MQTT or similar) **No localization or triangulation algorithms are required.** The receiver nodes only forward reception data. ### Deliverables * Schematics * PCB layouts * BOM * Gerbers * CAD enclosure (STEP/STL) * Hardware test firmware * Manufacturing files * Documentation * Complete 3D design for approval **before PCB** routing * 2 coin trackers * 6 LoRa repeaters/gateways ### Milestones **Milestone 1 (Awarded Project Price)** Complete hardware design, firmware and documentation. Payment after successful **video demonstratio...

...Health The dashboard should automatically refresh. Camera Monitoring Monitor every camera for: Online/Offline Status Last Seen Time Recording Status IP Address Camera Name Camera ID Camera Model Camera Location Camera Uptime Communication Failure NVR Monitoring Monitor: Online/Offline Status Last Communication CPU Usage (if available) Memory Usage (if available) Temperature (if supported) Firmware Version Network Status Recording Service Status Uptime Restart History Storage Configuration HDD Monitoring Display: HDD Online/Offline HDD Health SMART Status (where supported) Capacity Used Space Free Space Recording Days Remaining HDD Failure Alerts Disk Full Alerts Alert Management Generate alerts for: Camera Offline NVR Offline HDD Failure HDD Full Recording Stopped Netwo...

...it shows up in the Arduino IDE exactly like a normal UNO-style target Because the unit will be wall-mounted, an ABS enclosure that matches the board outline, standoffs and connector layout is part of the job. I need mechanical files (STEP/STL) alongside the electronics deliverables. Deliverables 1. Schematic, PCB layout and Gerber/ODB files 2. Complete BOM with part numbers and footprints 3. Firmware image and concise flashing instructions for Arduino IDE 4. 3D enclosure design ready for injection-moulding or 3-D printing 5. Two fully assembled and tested prototypes for final verification Acceptance criteria • The ESP32 loads Blink from Arduino IDE at 115200 bps with no driver fuss. • Battery section balances, protects and cuts-off at safe limits for both cells. &bul...

I’m building the low-level firmware for an ARM Cortex-A microcontroller and need help closing the remaining gaps in startup code, peripheral configuration, and board-level testing. The toolchain is already in place (GCC, OpenOCD, and a J-Link probe), and the hardware boots, but several peripherals still need clean, maintainable drivers and the overall initialization sequence must be tightened for reliable production use. You’ll dive into: • Writing or refactoring C/C++ startup routines, linker scripts, and BSP code specific to this Cortex-A device • Bringing up UART, SPI, GPIO, and a high-speed interface that feeds data to an upstream processor • Tracing hard faults with JTAG/SWD and delivering concise root-cause notes so I can reproduce your findings...

...Project: ESP32-S3 8 Channel Smart Home Switch PCB I need a compact smart home switch PCB similar to commercial retrofit smart switch modules. Purpose: Replace my current ESP + SSR relay setup with a smaller custom PCB. Main Input: - 230V AC input - Designed for Indian home electrical system - 24/7 continuous operation Controller: - ESP32-S3 WiFi module - Firmware will be custom (MQTT based) - Keep UART programming header for flashing firmware - Keep EN/BOOT buttons if required - ESP antenna area should be clear for good WiFi signal Power: - Compact isolated AC to DC power supply - 5V supply for outputs - 3.3V regulator for ESP32 - Do NOT use capacitive dropper power supply Outputs: Total 8 controllable AC outputs: - 6 channels: Use optically isolated TRIAC switchi...

My Apple Home setup in San Francisco needs a seasoned HomeKit and LIFX troubleshooter. The house already has multiple LIFX bulbs ti...luck. The goal is a reliable, fully functional system without ripping out hardware that already lives here. I need a thorough onsite diagnostic, clear identification of root causes, and a plan to restore dependable control. Deliverables • One diagnostic visit that maps the entire installation and pinpoints failure points. • Written report outlining root causes, recommended fixes, and any firmware, network, or configuration changes required. • Optional follow-up implementation phase to apply the approved fixes and verify stability over several days. Please share your availability for the initial assessment and any relevant HomeK...

...Temperature sensing (optional) • Safety monitoring • Power management • Audio input/output • Communication with Toradex SOM • Embedded firmware development ________________________________________ 3 Existing Assets The project is not starting from scratch. Available resources include: • Selected Toradex platform • Initial emitter prototypes • LTspice simulations • Preliminary coil measurements • System architecture definition • Technical support from experienced electronics engineers who will participate in periodic design reviews ________________________________________ 4 Deliverables • System architecture • Schematics • PCB layout • BOM • Embedded firmware • Prototype bring-up and vali...

Advanced OBD-II Vehicle Emulator Development (Freematics MK2 + ESP32) Develop a fully functional advanced OBD-II vehicle emulator based on the Freematics MK2 platform with any additional hardware and custom firmware/software required. The emulator must accurately simulate real vehicles across multiple OBD-II protocols and operate with commercial scan tools as though it were an actual vehicle. Required Features Support CAN, J1850 PWM, J1850 VPW, ISO 9141-2, and ISO 14230 (KWP2000) protocols. Custom firmware for complete protocol simulation and response handling. Vehicle profile library capable of storing multiple vehicle configurations. Import, save, edit, and replay complete vehicle sessions. Accurate VIN simulation (Mode 09). Calibration ID (CAL ID) simulation. Cali...

...on high-wattage thermal management, integrated hardware security to protect intellectual property, and coordination with firmware teams for proprietary protocols. Scope of Work: • Schematic & Layout: Design 2-layer or 4-layer PCBs for high-heat consumer grooming tools (12v and battery). • Thermal Management: Implement IPC-compliant trace widths and component spacing for heating elements (MCH/PTC) and high-speed motors. • PCB-Level Security: Design hardware-level security features (e.g., Secure Element integration, anti-tamper traces, or encrypted communication paths) to prevent product cloning and unauthorized accessory use. • Firmware Integration: Coordinate with firmware engineers to implement and support proprietary charging and power deli...

...receiver, display, data-logging memory and rechargeable power pack. • Interchangeable probe modules covering the typical kilohertz-to-megahertz range used for non-ferrous purity checks, each probe auto-calibrating on connection. • On-board firmware that shows impedance plane plots and numeric purity indices in real time, with simple zero, lift-off and reference calibration routines. • A desktop companion app (Windows or cross-platform) for deeper analysis and CSV export via USB-C or Bluetooth LE. • Complete build package: schematics, PCB files, firmware source, 3D CAD for the housing, and a short user guide so my lab team can reproduce and service the unit. Acceptance criteria 1. The prototype must detect at least a 2 % change in conductivity...

I’m building a proof-of-concept that lets an ultra-low-power board—specifically an ESP32—capture image data and immediately flag early-stage oral cancer. Because the hardware budget is tiny, I need a novel, highly compressed AI architecture that still reaches clinically...quantization/pruning strategy) • How you will tackle data collection, augmentation, and on-chip preprocessing • Your plan for optimizing inference time and RAM/flash usage on the ESP32 toolchain (ESP-IDF / Arduino, TensorFlow Lite Micro, or similar) • A validation strategy showing accuracy, sensitivity, and false-positive rates on a held-out image set Final deliverables include compiled firmware, source code, trained weights, and concise build/run documentation so I can rep...

I have a microcontroller-based board that will sit in the field and quietly record temperature readings from one or more digital sensors. Your job is to write the embedded firmware that pulls those readings at set intervals, time-stamps them, and stores everything persistently in a neat, easily downloadable file (CSV or similar). Core needs • Reliable polling of the attached temperature sensors (currently using a standard one-wire digital device, but code should be abstract enough to swap to I²C if required later). • Configurable sample rate—default 1 Hz but changeable over a simple serial menu or compile-time constant. • Local, non-volatile storage on the board’s microSD slot; automatic file rollover when a maximum size is reached so nothing...

My Apple Home setup in San Francisco needs a seasoned HomeKit and LIFX troubleshooter. The house already has multiple LIFX bulbs ti...luck. The goal is a reliable, fully functional system without ripping out hardware that already lives here. I need a thorough onsite diagnostic, clear identification of root causes, and a plan to restore dependable control. Deliverables • One diagnostic visit that maps the entire installation and pinpoints failure points. • Written report outlining root causes, recommended fixes, and any firmware, network, or configuration changes required. • Optional follow-up implementation phase to apply the approved fixes and verify stability over several days. Please share your availability for the initial assessment and any relevant HomeK...

...gear, and associated control firmware). Real-time data acquisition, repeatable procedures, and clear reporting are crucial. Key test areas • Electrical performance testing • Mechanical performance testing • Software / control-system testing Typical tools you might draw on include dynamometers, oscilloscopes, CAN-bus sniffers, MATLAB/Simulink, LabVIEW, and high-speed data loggers; feel free to propose alternatives if they achieve the same insight. Deliverables • A concise but complete test plan outlining objectives, equipment, instrumentation, and pass/fail criteria • Raw data files plus processed datasets with clear labeling • A final report summarizing methodology, results, anomalies, and actionable recommendations for design tweaks...

...capability: 10-26V • Protection for reverse polarity, surge, and hot-swap events is essential. What I expect from you 1. Schematics showing switch silicon, PoE controllers, DC-DC stages, magnetics, and protection. 2. A multi-layer PCB layout that respects impedance control, thermal relief for the power stages, and the front-panel JST-GH footprint. 3. Fully populated BOM with sourcing notes. 4. Firmware or register scripts needed to bring up the switch IC and enable PoE PSE features. 5. A brief bring-up guide and test plan demonstrating gigabit throughput, PoE load testing to 70 W per port, and thermal validation. I’m ready to answer questions quickly, review iterations, and approve milestones as we move from concept to release files. If you have prior exper...

...build-to-spec project. I already have a detailed engineering handoff package including system architecture, old PCB references, estimated current budget, pin maps, connector notes, BOM guidance, firmware handoff notes, layout requirements, and test plans. The freelancer’s main responsibility is hardware design and manufacturing outputs: schematic, PCB layout, Gerbers, BOM, assembly files, and firmware-ready hardware documentation. Firmware will be developed separately using AI/Codex/Claude from existing working ESP32 firmware. I will burn the firmware once the board is ready. The PCB must support first firmware flashing, debugging, recovery, and future OTA updates. Target Board Onboard STM32G474RET6 LQFP64 main MCU ESP32-C3 WiFi/BLE comma...

...cable. We already have a 3D STEP model/mapping of the chip geometry, which will be shared after project allocation. The project includes: Male insert design Female chip receiver design Short cable connection Simple PCB/contact design 3D-printable housing design Prototype fabrication Testing with the device Complete design-file and knowledge transfer Important: this project does not involve firmware changes, chip cloning, chip emulation, decoding, calibration modification, or opening/modifying the device. It is only a physical extension adapter. The design should be easy to manufacture in India using commonly available PCB vendors, cables, connectors, and 3D printing. Housing should be friendly for in-house FDM 3D printing. Experience with small PCB adapters, contact interfa...

...SpO2, PPG-derived respiratory rate, heart rate from PPG/BP, temperature, height, weight, BMI, and body composition values such as body fat %, visceral fat, muscle mass, body water %, bone mass, BMR, metabolic age, and segmental distribution where technically feasible (through bio impedance). The work includes sensor/module selection, hardware architecture, PCB/control board design if required, firmware, Windows/Linux compatible local service/API, local session-wise data handling, calibration workflows, validation against reference devices, and production-readiness documentation. The final system should not be a one-off prototype. It must be designed for repeatable manufacturing, assembly, calibration, debugging, and servicing in India. The consultant should be able to guide th...

...and need an embedded expert who can move smoothly between board-level decisions and low-level code. The scope touches every layer of the stack: • Firmware development • Hardware design • Sensor integration Day-to-day, you’ll be writing tight C/C++ for the MCU, using Python for test harnesses or quick validation scripts, and advising on component choice, schematic capture, and PCB layout. Expect to bring up the first boards, tune power consumption, and create the drivers that let all sensors report reliably to the cloud. Deliverables I’m counting on: 1. Complete schematics, BOM, and ready-for-fab Gerber files. 2. Well-documented firmware (C/C++) with build instructions. 3. Python test scripts confirming sensor performance and connecti...

...Bluetooth BLE Basic documentation so my app developer can connect it to a Flutter Android app This does not need to be a finished commercial product yet. I’m looking for a working proof-of-concept prototype first, keeping the cost as low as possible. Please let me know: Whether you can build this Estimated cost for a prototype Estimated timescale What parts you would recommend Whether you can provide firmware/source code Kind regards, Stephen Lewis GrowlerZ Paranormal Tools...

I’m commissioning a DMA-based external cheat for Marvel Rivals. The job is to deliver two equally critical features—magic bullet and silent aim—running entirely through DMA so the game process stays untouched and undetected. Deliverables • Compiled driver/firmware and user-mode loader that activate magic bullet and silent aim • Full, well-commented source code • Setup guide covering hardware wiring, firmware flashing, and in-game usage Acceptance Criteria • Magic bullet reliably redirects shots to the intended target within normal net-code limits • Silent aim remains invisible to spectators and kill-cams • No direct writes to game memory outside the DMA channel You may choose any language and compatible DMA hardwa...

...in mind: a compact, low-power microcontroller (ESP32 or similar), Wi-Fi connectivity, and a simple set of sensors—temperature, humidity and possibly light or motion—though I’m open to strong technical suggestions. I’ll need you to design the hardware layout, write reliable firmware, and set up the data pipeline (MQTT, REST or another lightweight protocol that fits a home network). Clean, well-documented code with OTA update support is essential. Deliverables • Schematic and PCB files ready for fabrication • Firmware source with build instructions • Basic cloud or local server script for storing and visualising the data • Short user guide covering setup, flashing and operation Acceptance will be based on the device booti...

...enclosure * Forced-air cooling using temperature-controlled fans * No power derating up to +40°C ambient * Target MTBF: ≥100,000 hours ### 7. Required Engineering Deliverables (Full IP Transfer) Upon completion, the following must be provided: 1. **Schematics** * PDF * Original source files (Altium, Protel, or OrCAD) 2. **PCB Design** * Gerber files * PCB source/layout files 3. **Firmware** * Complete commented source code * Programming instructions 4. **Bill of Materials** * Complete BOM with original manufacturer part numbers 5. **Mechanical Design** * STEP or IGES 3D CAD files 6. **Documentation** * Calibration procedures * Test procedures * Compliance test reports (if applicable) ## Please let me know: * Do you have expe...

...Modbus-compatible soil probe, and push that reading through a Meshtastic link. No commercial polish required—the goal is to prove the data path end-to-end. Scope of work • Recommend and source—or at least specify—a compact board, radio module, and battery pack (AA-powered) suited for outdoor use. I currently have no hardware on hand, so component guidance is essential. • Write Python-based firmware (preferred language) that: – Powers the Modbus interface, retrieves the probe value, and sleeps between cycles to conserve the batteries. – Publishes the reading over Meshtastic in a lightweight JSON or CSV payload. • Use the Official Meshtastic CLI + Bash + Simple Script (Minimal Python) for my laptop to listen to a connected...

I’m building a compact, battery-powered tattoo machine and need a custom rectangular PCB that can both ...board must remain rectangular and no larger than roughly 35 mm on its shortest edge so it can slide into the existing machine housing without modifications. Deliverables • Complete schematic in KiCad, Altium, or Eagle • Optimised PCB layout (Gerber, drill, pick-and-place files) • Bill of materials with readily available components • Brief design notes covering key calculations and any firmware pin-outs if a microcontroller is used I’ll fabricate the first prototypes as soon as the files are ready, so clarity and accuracy are essential. Let me know your preferred CAD tool and any questions you have about the enclosure or motor specs, an...

...platform that supports: * Passenger cars * SUVs * Commercial vehicles * Trucks * Buses * Construction equipment * Agricultural vehicles The same PCB should support different cable harnesses rather than different PCB designs. --- # Functional Requirements ## Communication * 4G LTE (Cat-1 or Cat-1 bis preferred) * Nano SIM * Optional eSIM support * MQTT * HTTPS * TCP/IP * OTA firmware update capability * Secure firmware architecture --- ## GNSS Must support: * GPS * NavIC (Indian Navigation System) * GLONASS * Galileo * BeiDou * QZSS (optional) Fast satellite acquisition and good urban performance are preferred. --- ## Vehicle Interfaces The PCB shall support: * OBD-II (16-pin connector) * SAE J1939 (9-pin Deutsch connector) * CAN 2.0A * CAN 2.0B * ISO15765 * ...

...The lag is visible outside of League, so the game isn’t the lone culprit. • Windows, chipset, BIOS, graphics, and peripheral drivers are fully up to date. What I’m after is a clean, repeatable fix (or set of fixes) that stops the phantom clicks, restores normal mouse responsiveness, and eliminates the in-game stutter. Whether that means digging into USB power settings, HID driver conflicts, firmware, background services, or deeper OS troubleshooting, I’m open to your tested approach. Deliverables 1. A brief diagnostic plan you’ll follow (shared up front so I know what to expect). 2. Remote or step-by-step guidance to apply the remedy. 3. A short write-up of exactly what was changed so I can reproduce the solution if I ever reset the syst...

I’m ready to move an industrial-grade controller board from 50K units to 500K Units production and need a China-based ODM and PCBA house that can step in, refine the current design, and run the line at scale. The board...ahead. Deliverables (project milestones) • Updated schematics, BOM, and Gerber set reflecting my requested modifications • DFM/DFA feedback with recommended cost-down or risk-reduction actions • Pilot build (≈50 pcs) plus full test results • Final quotation and ramp-up plan for mass production, including lead-times and QC checkpoints I’m happy to provide the current CAD files, firmware, and performance specs under NDA. Let’s discuss how you can take this board from revised design to thousands of units in...

Project support for PCB firmware/hardware testing and debugging. This milestone covers initial firmware review, remote flashing support, hardware setup guidance, debugging coordination, serial log review, and validation of basic board communication and functionality. Findings and next steps will be documented after the support block.

...IP54 rated - Smoked black acrylic display window - Magnetic + screw mounting - All source files + manufacturing-ready outputs (Gerber, STEP, DXF, PDF) TECHNOLOGY: - MCU: ESP32-WROOM-32D - Display: 8× MAX7219 cascaded 8×8 colour LED dot matrix - RTC: DS3231 | Memory: FRAM MB85RC256V - RS485 (MAX485) | 24VDC industrial power input - All 24V inputs optically isolated (PC817) WE WILL HANDLE ALL FIRMWARE — no coding required from you. DELIVERABLES (full list in attached spec document): schematic files + PDF Gerber files + drill files (DRC zero errors) 3. Electronics BOM (Excel + PDF) 4. STEP + DXF + PDF enclosure drawings 5. Enclosure/hardware BOM 6. 3D renders of both boards PAYMENT: Milestone-based (4 stages — details in spec document) Please DO NOT bi...

...confirmation). The visit centres on installation and setup of new routers, switches, firewalls, and wireless access points. While putting the gear in place you’ll also tackle the connectivity problems the client is seeing, swap or repair any hardware that proves faulty, and tighten configurations to close off the security breach recently reported. You should arrive ready to build clean configs, patch firmware, test cabling, trace VLANs and SSIDs end-to-end, and leave the environment stable and documented. Familiarity with common vendor CLIs, SSH, Wireshark, and a basic cable tester will make the day run smoothly. Deliverables (same day hand-off): • Fully operational LAN/WLAN with verified internet access • Saved configuration files for every device installed ...

I am working on a project using an nRF52840 Pro Micro to read data from a heart rate strap. I am using the latest SDK version (v3.3.1) with Zephyr, but I am having trouble actually reading the strap's data. My VS Code environment is set up, the SDK is installed, and flashing works fine; the issue lies in the code not reading the data. This nRF unit will functi... • Transmission / processing queues • Automatic reconnection if the strap drops out 3. Clean, well-commented Zephyr-based C code so I can maintain it. 4. Basic diagnostic logging so I can confirm packets in real time while testing. You’ll receive my existing main.c and a board photo so you can see pin assignments. A concise README explaining how to rebuild and flash the finished firmware ro...

...a consumer-grade embedded IoT system. This is a collaborative project requiring close coordination between hardware and firmware teams to deliver a production-ready industrial IoT device with advanced wireless capabilities and sensor integration. HARDWARE DEVELOPMENT ENGINEER Key Responsibilities: - System-level hardware architecture and design freeze - Component selection (MCU/SoC, power ICs, storage interfaces, wireless modules) - Schematic design and PCB layout (high-speed + mixed-signal, EMI-aware) - Power integrity, grounding, shielding, and DFM/DFA compliance - Prototype fabrication support and manufacturer Q&A - Hardware bring-up support and validation with firmware engineer - Clear documentation for handover and future revisions Deliverables & Milestones:...

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My team builds bespoke industrial equipment and to date every chassis, PCB, and line of firmware has been produced in-house. As we scale, I want to assemble a reliable shortlist of external partners who can jump in when workload or lead-times demand it, specifically for the design and prototyping stage of new products. The scope spans three tightly-linked disciplines: • Mechanical engineering – rugged enclosures, heat management, motion components • Electrical engineering – board-level design, power distribution, compliance-ready layouts • Firmware development – microcontroller code, hardware abstraction layers, rapid bring-up To make the shortlist, please share: • A concise portfolio of comparable industrial projects (photos, sch...

...pre-amplifier, clean up the line, and digitise the result with selectable gains that I can command from my firmware. Here is what I’m after: • A low-noise analogue front-end that provides filtering, amplification and noise-reduction tuned for the sub-kHz band typical of these sensors. • Software-defined gain control (digital potentiometer, PGA or similar) that I can drive over I²C/SPI from my MCU. • Integrated phantom-power rail (12–48 V) with proper isolation so the analogue ground stays quiet. • ADC selection and interface logic ready for direct connection to a Cortex-M microcontroller (I²S or SPI preferred). • Schematic, PCB layout and BOM in KiCad or Altium, plus brief firmware snippets showing register settings...

...confirmation). The visit centres on installation and setup of new routers, switches, firewalls, and wireless access points. While putting the gear in place you’ll also tackle the connectivity problems the client is seeing, swap or repair any hardware that proves faulty, and tighten configurations to close off the security breach recently reported. You should arrive ready to build clean configs, patch firmware, test cabling, trace VLANs and SSIDs end-to-end, and leave the environment stable and documented. Familiarity with common vendor CLIs, SSH, Wireshark, and a basic cable tester will make the day run smoothly. Deliverables (same day hand-off): • Fully operational LAN/WLAN with verified internet access • Saved configuration files for every device installed ...

I need a complete ci...mainstream tool such as Altium Designer, KiCad, or OrCAD so I can review the files easily. Once finished, I will require: • Editable schematic files with all nets labeled • Optimized multi-layer PCB layout • Gerber, drill, and pick-and-place files ready for manufacture • A complete BOM with manufacturer part numbers • Brief design notes explaining key decisions, power calculations, and any firmware hooks for the microcontroller­ I will validate the deliverables by importing the files into my CAD environment and running basic DRC and ERC checks, so make sure the design passes without errors. If you have questions about sensor interfaces, voltage ranges, or thermal constraints, let me know early so we can lock those details...

...when the animal crosses the boundary. * Stop the buzzer when the animal returns inside. Phase 3 * Optimize power consumption. * Run reliably on battery power. * Prepare firmware for future Bluetooth/Wi-Fi communication. Future Features (Not Required for Prototype) * Mobile application * Live map * Multiple animal tracking * Battery status monitoring * Vibration motor * Health monitoring sensors * Cloud connectivity * OTA firmware updates Deliverables * Fully commented firmware source code * Circuit diagram * Wiring documentation * Component list * Working prototype demonstration * Instructions for flashing future firmware Success Criteria A working prototype that: * Obtains GPS location reliably. * Detects when the buffalo leaves the virtual boundary...

...two-way communication over both USB serial (when a cable is connected) and the internet (Wi-Fi / cellular). It must request and verify location services, internet access, and a unique device identifier before enabling its diagnostic functions. As data arrives it has to be decrypted, parsed, and rendered in a clear interface that also lets me adjust settings on the target device and push updated firmware when required. Essential diagnostic features • Real-time data monitoring • Data sending and receiving • System updates Technical expectations – Translate or refactor the existing Python logic into the chosen mobile stack and wrap it in an intuitive, tab- or page-based GUI. – Implement secure USB serial and socket communication layers, inclu...

...prototype fits each can size, survives a shake test without leaking, and shows the LED powering up (mock data on the screen is fine at this stage) Acceptance criteria: 1. One physical prototype shipped to me, ready for fit-and-seal testing 2. Native CAD files plus manufacturing-ready STEP files 3. Bill of materials with suppliers and food-grade certifications 4. Assembly instructions and any firmware stubs used to drive the LED demo If you have experience with thermoelectric cooling modules, PCB layout for compact wearables, or consumer beverage accessories, please highlight it—it will help when we move to the next development phase....

...Core deliverables • QR / barcode generator that produces unique voucher codes with configurable expiry and value • Endpoint to scan, look-up, and validate each voucher, preventing duplicates or replay attempts • Transaction logging layer that stores every issue and redemption event and can export daily CSV / JSON reports • Clean, versioned REST API documentation (OpenAPI / Swagger) so kiosk firmware and any third-party apps can integrate immediately Technical notes – Written in modern Python (FastAPI or Flask preferred, but I’m open as long as response times stay under 200 ms). – Data persistence can be PostgreSQL or MySQL; choose what fits best with Hetzner’s managed offerings. – Deploy via Docker for portability, with...

...hardware) run without any issues. Standard OS-level logs show nothing useful, suggesting the shutdowns are occurring below the OS layer. We need an experienced Linux/infrastructure engineer to identify the root cause and deliver a documented fix. Requirements: - Strong experience with Linux (Debian/Ubuntu) at the system and kernel level - Familiarity with ACPI, power management, and hardware-firmware interaction debugging - Experience reading BMC/IPMI/SEL hardware event logs - Ability to audit and interpret kernel ring buffer (journald/dmesg) output - Experience with Ansible-managed infrastructure - Comfortable working with physical or remote-access hardware across distributed locations - Prior experience debugging hardware-specific Linux issues (not just software-level) Delive...