Microcontrolador Jobs

Fix a year-2027 overflow bug in a compiled 68HC11 binary Pre-compiled time library (, IAR UBROF format, no source available) stores year as signed char. On 01/01/2028 overflow causes terminal to display wrong date (currently rolls back to 1970). We have already patched several DECA→NOP sign-extension sites. Bug persists. Need someone to disassemble the full year-rollover code path and identify what still ...

I need the full design of a six-layer Primus X2 flight-controller board reconstructed so I can port its VFX interface to an STM32 platform. My end goal is to feed a live video stream through an ESP32-CAM, so the reverse-engineered design has to include the exact pathways, pin mapping and signal integrity considerations that will let the STM32 pull that stream in real time. I already have the physical board; what I do not have are the original CAD files, annotated schematic or stack-up. Where the footage ultimately lands is not important right now—just make sure the design can sustain continuous live video. Deliverables • Complete schematic capture, showing every net, component annotation and test point • Layer-by-layer PCB Gerber or native files (Altium, KiCad or ...

I am looking for an experienced hardware design engineer to develop a production-grade industrial controller PCB based on the ESP32-S3. This is not a hobby project. The expectation is a robust, industrially reliable design with proper isolation, analog accuracy, and manufacturability in mind. A detailed Hardware Requirement Document (HRD) is already prepared and will be shared as the baseline reference. The scope is well thought through, but I expect the freelancer to actively review, challenge, and refine the design where necessary. What This System Does The system is an industrial measurement and control device with the following capabilities: * Sensor acquisition (Pressure + Temperature + Humidity via I2C and SPI) * Continuous 4–20 mA output (primary, always active) * Continu...

Hardware Development - Microcontrollers Integration with Software Iot AI ML

Hi, I am building a small MVP for a smart vending system for selling packaged items. I’m looking for a freelancer to help develop a simple and reliable system integrating touchscreen UI, QR payment, and hardware control. Project Overview: The system will include: Raspberry Pi with touchscreen Product selection interface QR code payment (Stripe or similar) Door unlock mechanism after successful payment LED indication for selected item Basic sensor feedback (optional in first stage) Required Features: Touchscreen UI Display list of products Allow selection (1 or multiple items) Show price and generate QR code Payment Integration Generate QR code (Stripe payment link or similar) Detect successful payment (via webhook or API) Hardware Control Trigger relay to unlock fridge door Con...

I am looking for a highly experienced embedded + analog design engineer to develop a high-precision sine wave generation system with real-time USB control. This is a result-driven project focused on delivering a working, validated prototype, not just schematics. System Requirements 1. Sine Wave Generation DDS-based solution (e.g., AD9833 or better alternative – developer may choose) Frequency range: up to ~10 kHz (focus on stability, purity, low distortion) Proper analog filtering required (low-pass) 2. Amplitude Control Controlled via DAC (e.g., MCP4822 or equivalent – developer may choose) Adjustable via PC interface (not continuously dynamic) Stable and calibrated output expected 3. Offset Control (Critical Feature) Real-time adjustable DC offset via USB interface Update ra...

I need a hardware designer who can take my concept for a compact “heartbeat” monitor and turn it into a fully-tested PCB that I can drop straight into network control boxes. The unit must run on a 12 V supply, use an ESP32 or similar, and expose a standard Ethernet port. Once powered, it should sense the input voltage, confirm link integrity, and—on a watchdog timer—send a small JSON payload via HTTP POST to my web server. I’ll handle all firmware in C++; what I’m after is the electronics and the board itself. Key points • 12 V input with on-board regulation suitable for the ESP32 • Reliable standard-speed Ethernet (no PoE needed) • Voltage and link-status monitoring lines broken out for code access • Footprint kept as small ...

I need a compact-footprint PCB that runs on a solid 12 V input and plugs straight into Ethernet so it can sit inside my equipment rack and let the rest of my system know everything is still alive. The board’s sole job is to send a small heartbeat packet at set intervals and, if the link ever drops, push an immediate network-status alert that my database can log. Remote-monitoring bells and whistles are not required right now; reliable data transmission and clear link reporting are the priorities. You can choose the silicon you are most comfortable with—an MCU with an integrated MAC/PHY, an external PHY hanging off an ESP32, or another combination—so long as it boots quickly, keeps the BOM lean, and exposes a straightforward way for me to adjust the heartbeat interval lat...

We are building SmartPTI™ Pro — a patent-pending, AI-powered commercial vehicle safety monitoring and predictive maintenance device developed under the TruckerGuard AI™ brand. It is designed for Class 7 and Class 8 commercial trucks operating under FMCSA regulations. SmartPTI™ Pro is not just a pre-trip inspection tool. It is a data-driven AI system that learns each vehicle's patterns over time and predicts mechanical failures, tire degradation, brake wear, and electrical faults before they happen on the road. This transforms it from a one-time checker into a continuous safety intelligence platform for fleets and owner-operators. This is a patent-protected, funded product with direct fleet industry backing from someone working inside commercial vehicle sa...

Help with production of elrs pcb + pcba + BOM. Opensource. Available on oshwhub & labs.

I need a single 2-layer PCB designed, fabricated, and assembled for a compact ultrasonic microphone jammer demo unit. The device emits a frequency-modulated 24–26 kHz ultrasonic signal that disrupts MEMS microphone recording on nearby phones. This is a privacy/anti-eavesdropping demo unit. The circuit design, schematic, netlist, and firmware are ready — I need PCB layout, fabrication, and assembly. What I Have (Will Be Provided) Complete circuit schematic (PDF, A3) Netlist with all connections and component references Bill of Materials with exact part numbers and footprints Firmware source code (Arduino .ino for ESP32-C3 Super Mini) Reference design from open-source project (mcore1976/antispy-jammer on GitHub) Circuit Summary Signal chain: ESP32-C3 Super Mini → AD9833 DDS ...

I’m upgrading my car’s sound system and want a thoughtfully balanced result—clean detail without losing the fun, chest-hitting output. The plan already includes component speakers up front, coaxials in the rear, and at least one subwoofer for low-end support. What I need now is guidance that ties everything together: • Precise speaker, amplifier, and DSP recommendations that complement those drivers and suit a balanced SQ/SPL approach. • A wiring, crossover, and gain-structure plan that makes the most of available channels and power. • A complete DSP tuning file (or clearly written step-by-step parameters) covering time alignment, EQ, and crossovers so I can load it straight into the unit and audition. Acceptance criteria 1. Bill of materials with b...

I'm developing an online booking website and need to integrate an electronic component using ESP32. Requirements: - Insert an SD card into the ESP32 slot. - Open a file on the SD card. - Write text data to the SD card. Ideal Skills and Experience: - Proficiency with ESP32 and microcontrollers. - Experience using the ESP-IDF SDMMC Driver. - Strong background in file handling and data writing on SD cards. Please include past work in your application.

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

I need an engineer who can take my functional requirements and turn them into clean, synthesizable SystemVerilog that runs on the DE-10 FPGA kit. The work covers the full RTL flow—coding the logic, building self-checking test-benches, running ModelSim simulations, and closing on timing before hand-off. You are free to follow your own coding style so long as the code is readable, well-commented, and synthesizes without warnings. The critical point is that every module is fully verified: all corner cases exercised, assertions in place, coverage collected, and a concise report delivered alongside waveform evidence. I’m based in Ho Chi Minh City and would strongly prefer someone who can meet on-site when needed to review schematics, probe the board, and iterate quickly once t...

I need a matched RF transmitter-receiver pair engineered from the ground up for remote control operation. When the handheld transmitter is activated, the receiver must recognise a unique code and immediately trigger a defined sequence of actions inside my host device. Reliability, low latency and immunity to casual interference are essential. Here’s what I’m expecting from you: • Schematic and PCB layout for both transmitter and receiver, ready for fabrication. • PCB Gerber files. • Breadboard demonstrating functionality. • Firmware (or discrete logic plan) that decodes the signal and drives the action sequence pins • A succinct test report proving range, stability, and correct execution of the sequence in a lab environment. You are free ...

I'm seeking an expert or skilled hobbyist to assist with both hardware and software on a Raspberry Pi project. This is fun but very short-term project (few hours) but if successful, could lead to more substantial, ongoing projects. Key requirements include: - MUST be in the Chicago area. - Setting up networking and connectivity - Possibly assisting with hardware setup, like GPIO pins and sensors - Modifying serial I/O and data. - Accessing stored images. Ideal skills and experience: - Proficiency in Raspberry Pi hardware and software - Experience with networking and connectivity setup - Familiarity with GPIO pins and sensor integration Please share relevant experience and approach.

I’m building FoodEase, an automatic cooking appliance that runs on a dual-core ESP32. The project is already architected around native ESP-IDF and FreeRTOS, so I need someone who can jump straight into low-level work—no Arduino abstractions—while still writing clean, production-ready code. Here’s what the firmware must do today: handle precise motor control and thermal regulation, collect and analyse data from temperature sensors, and maintain rock-solid Wi-Fi/BLE connectivity with a fully recoverable OTA update path. All of this has to coexist smoothly under FreeRTOS, so tight task scheduling, queues, semaphores and event groups are second nature to you. You’ll be driving PWM channels for the motor, talking to temperature probes over I²C, and keeping...

I want to develop a LabVIEW VI that integrates and synchronizes data from two sources: an Arduino-controlled actuator and a DAQ-based voltage measurement system. The Arduino is responsible for controlling the motion of a stepper motor and continuously outputs position data over serial communication. Specifically, it transmits time and position in a comma-separated format as “time_ms, position_mm” at approximately 50 millisecond intervals. This output has already been verified to function correctly using the Arduino Serial Plotter which I wrote the code for. Also, a DAQ system within LabVIEW is used to measure the analog voltage output from a load cell. This voltage represents the sensor signal and does not need to be converted to force at this stage. The DAQ portion of the sys...

We are looking for an experienced PLC Programmer and Hardware Integrator with strong expertise in Modbus communication to support an automation project. Scope of Work: * Develop and implement PLC programs * Integrate PLC with field hardware (sensors, actuators, controllers) * Configure and troubleshoot Modbus (RTU/TCP) communication * Ensure reliable data exchange between devices * Support system testing and debugging Requirements: * Proven hands-on experience in PLC programming * Strong experience in hardware integration and wiring interfaces * Solid understanding of Modbus communication (RTU & TCP/IP) * Experience with industrial automation systems * Ability to troubleshoot communication and integration issues Preferred: * Experience with multiple PLC platforms (Siemens / Allen...

I’ve thought of a product that springs to life at the tap of a phone or web button, and I need a talented maker to turn that idea into a fully functioning prototype. The core is a pop-up mechanism—whether you favor solenoids, springs, or a tiny geared motor, I’m open—as long as it rises smoothly, reliably, and safely. Control will come from a Raspberry Pi or Arduino (again, whichever you feel best suits the task), with clean wiring and firmware that listens for a remote trigger. Alongside the hardware, I’ll need a very lightweight app or web page that exposes a simple trigger; bonus points if you can add basic status feedback without over-engineering. I’m happy to supply sketches and dimensions. To keep the conversation focused, please share: • P...

I want an HID Omnikey 3021 smart-card reader—converted so it connects through a standard USB-C port instead of USB-A, while still providing full-speed data communication and bus power. I only need the cable/connector side removed and replaced with a USB-C connector so the device enumerates and draws power over USB-C just as reliably as it does over USB-A. There should be no cable, just a USB-C connector so that the device is as small as possible. Here is what will make the job a success: • The finished reader plugs into any standard USB-C host and both powers up and transfers smart-card data without errors. • All USB-C wiring follows the spec’s pin-out and current-handling guidelines. • You supply clear documentation (schematic or wiring map, parts used and...

I’m looking for a proven team to configure and secure an AI-driven open-claw system from end to end. The build must meet industrial safety standards, pass every functional test, and be ready for immediate deployment once delivered. My key requirements are simple but non-negotiable: • You already hold 1,000+ verifiable reviews demonstrating consistent, high-quality work. • Your operation is based in the United Kingdom or Pakistan, as quick on-site or time-zone-aligned collaboration may be required. Scope of work 1. Evaluate my current hardware plans and confirm compatibility with your preferred AI control stack. 2. Implement the full claw control logic, fail-safe routines, and sensor feedback loops in a maintainable codebase. 3. Provide a clear, device-level sa...

I have an electrical appliance box on-site in Otahuhu that needs a tidy upgrade. The enclosure currently holds an MCB, timer, relay and an AU socket, and I’d like those parts swapped out for new units and the internal wiring cleaned up so everything meets current NZ electrical standards. Here’s what I’m after: • Remove the existing MCB, timer, relay and socket • Fit the replacement components I supply (or, if you can source equivalent rated parts, let me know) • Re-terminate and dress the wiring so it’s neat, labelled and compliant with AS/NZS 3000 • Function-test the circuit, confirm correct timer operation and relay actuation, then issue the usual Certificate of Compliance The board is easily accessible during business hours, pa...

My current firmware for the PIC18F46K22 already drives a 128 × 64 graphical LCD and a 4 × 5 keypad without issues, yet I now need to extend its functionality: two additional real-time parameters must be calculated and shown on designated areas of the screen. The existing project is written in C, built under MPLAB X with the XC8 compiler. Your task is to: • add the new variables to the main control loop, • update or create the drawing routine so these values appear neatly in the reserved zones of the display (font, coordinates and visibility must match the style of the current UI), • adjust any supporting timers, buffers or ISR code so that refresh rates and memory usage remain within device limits, and • return clean, well-commented source files th...

I want a bootable .img image for the Raspberry Pi 4 that turns the board into a fully offline, hardware-style wallet. After flashing the image to an SD card and powering up, I expect a clean graphical interface that lets me: • Generate and manage addresses for roughly forty of the most-used coins and tokens. • Sign and later broadcast transactions only when I briefly connect the Pi to a network. • Move funds straight to a linked bank account by entering a routing and account number—ACH style—without ever needing a third-party exchange. The build has to run reliably with no internet dependency at first boot, keeping all keys on the device and encrypted at rest. A simple on-screen flow for first-time setup, balance overview, and transfers is essential; I shou...

Project Title: Plant Care System using Delta PLC Project Description: I am looking for an expert in Automation and PLC (specifically WPLSoft / Delta PLC) to deliver a complete project from A to Z. The project title is "Plant Care System using PLC". I need a full package that includes the following 13 items: 1. ABSTRACT: A clear summary of the project. 2. INTRODUCTION TO EMBEDDED SYSTEMS: (Specific to PLC-based systems). 3. BLOCK DIAGRAM: Showing the system architecture. 4. HARDWARE REQUIREMENTS: List of all parts needed. 5. CONTROLLER SPECIFICATIONS: Details about the Delta PLC used. 6. COMPONENT SPECIFICATIONS: Datasheets for sensors (Moisture, Temp, etc.) and actuators. 7. SOFTWARE REQUIREMENTS: (WPLSoft, ISPSoft, etc.). 8. CIRCUIT DIAGRAM: Clear wiring/schematic diagram. 9. C...

I am building a battery-powered edge node around the STM32WL (LoRa-E5 module) that must sit in the field for years on a single 5 000 mAh cell. To reach that target I need both the hardware design and the accompanying firmware created with an obsessive focus on nano-amp sleep currents and efficient duty-cycling. Core capabilities • Data logging to internal flash or external EEPROM so records are retained between wake-ups. • LoRa communication only; no Bluetooth or Wi-Fi. The node will periodically wake, send an uplink, accept a downlink if present, and return to deep sleep. • Simple sensor block: one digital interrupt input (e.g., reed switch/pulse counter) plus one digital output that can drive an external load for a short, timed burst. Hardware scope – Compl...

I’m looking for an experienced engineer who can take my custom-built hardware and make it work seamlessly within a larger system. The heart of the job is hands-on hardware integration—not general project management—so I need someone who is comfortable troubleshooting boards, refining firmware, and confirming that every physical connection and signal behaves as intended. Key goals • Map out the integration plan for the custom boards, interfaces, and peripherals I already have on hand. • Develop or refine any required low-level firmware so the hardware communicates reliably with the host system. • Validate the full signal chain with bench testing, basic stress tests, and a succinct report of results. What I’ll provide – Schematics, compone...

I aim to develop a solution that will facilitate data communication between an Arduino UNO and a SIM7600E using AT+COMMAND. The primary data in focus will be temperature sensor readings. Key Responsibilities: - Setting up a reliable connection between Arduino UNO and SIM7600E - Implement AT+COMMAND for effective communication - Design a protocol for transmitting temperature sensor data Ideal Skills: - Solid knowledge of Arduino - Proficiency in handling SIM7600E - Experience in implementing AT+COMMAND - Understanding of sensor data transmissions. Please ensure you can efficiently deliver on these requirements, and provide the mentioned sensor data communication before placing your bid.