Microcontrolador Jobs

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’m putting together the first technical milestone for a car cruise-control study and need a solid, textbook-quality model of the engine control system. The scope is limited to the open-loop stage, yet everything has to be neat enough to drop straight into a later feedback-design task. Here’s what I need from you: • System definition: a concise description of the cruise-control engine subsystem, highlighting the throttle actuator’s role only where it affects the single selected sensor signal—engine speed. • Inputs & outputs table plus the governing equations that connect throttle position to engine rpm. • Transfer function derivation in the Laplace domain, clearly showing assumptions and simplifications. • Open-loop analysis: step and...

I’m looking to build a simple wearable mask prototype that combines light and vibration to create a relaxing sensory experience. The device should include LED lights (preferably RGB) positioned so they shine through closed eyes and run different light patterns. It should also include 1–3 small vibration motors that sync with the light patterns to enhance the experience. I’d like a few basic modes such as calm (slow and soft), medium, intense, and a random mode that generates varying patterns. The patterns should transition smoothly and not feel harsh or abrupt. The device should be controlled with 2–3 simple buttons (power and mode switching). No app or connectivity is needed. It should be powered by a rechargeable battery (USB-C preferred). The physical build d...

I’m building a palm-sized device that helps automate at-home medication. Inside it sit two independent plungers driven by micro servos, a vibration motor, a small speaker for audio prompts, and a 1.68-inch colour display for on-device instructions and feedback. All of these elements need to live on a custom PCB, run from a single rechargeable battery that is properly sized for daily use, and work seamlessly together. You will receive the full parts kit, so your focus is on: • designing the board, • assembling and reflowing it, • loading the firmware, and • proving that everything operates exactly as intended. The most important interaction is tight, reliable coordination between the user’s button press (or other trigger you recommend) and the t...

Design a complete electronic schematic for our smart orthotic insole device based on the given system requirements. The circuit will include multiple FSR sensors (Force Sensitive Resistors) for plantar pressure sensing and an IMU sensor for gait/motion tracking. Select and integrate suitable supporting components such as microcontroller, BLE communication module, power management circuit, battery charging unit, connectors, and signal conditioning circuits. Ensure proper sensor interfacing, analog signal acquisition, filtering, and calibration provisions in the schematic design. After schematic approval, develop a compact, optimized PCB layout suitable for wearable insole integration with size and flexibility constraints in mind. PCB must be designed for low power consumption, stable sensor...

I’m outfitting an ArduCopter that runs 6-cell Li-ion packs and need a purpose-built Battery Management System. The board and firmware must continuously monitor pack health, actively balance the cells and speak Mavlink over CAN so the flight controller sees accurate live data. Core functions • Real-time battery monitoring with voltage, current and temperature reporting for every cell and for the full pack • Automatic cell-to-cell balancing to maximise capacity and cycle life • Safety layer that disconnects or limits power on over-charge, over-discharge or short-circuit events • Mavlink-over-CAN telemetry, using the standard ArduCopter battery status messages so Mission Planner and QGroundControl display everything without custom plugins What I expect as d...

I have a new industrial control system under development and now need the core PLC program written from scratch. The hardware has already been selected; I can share the full I/O list, functional specification and any wiring drawings you require once we start. Your role will be to translate those documents into a clean, well-structured PLC application, fully commented and ready for download to the controller. I’ll also count on you to: • model or simulate the logic so we can prove operation before installation • make reasonable tag-naming and memory-usage choices to keep future maintenance simple • supply the compiled program, the editable source file and a quick hand-off guide that explains each routine If you can stay available for remote support during first...

The project revolves around a Kinco PLC linked to its HMI, all developed in the D-Tool suite. I need the controller to handle three core jobs simultaneously: log key process data to non-volatile memory or an external database, push that data to a remote dashboard for live monitoring over TCP/IP, and execute closed-loop automated control of the machine. Connectivity is critical. The program must speak standard TCP/IP for the plant network and support both CANopen and raw CANbus frames so it can exchange data with existing field devices and a supervisory gateway. On the I/O side, the PLC will gather readings from temperature, pressure and proximity sensors, plus capture motor-RPM feedback for speed regulation. The logic should scale, so clean tag structures, well-commented code and clear H...

I'm looking for an experienced developer to design an environmental monitoring system using the Arduino UNO R4 Wifi board and LoRa technology. The system will be used to collect data on environmental pollutants. Key Requirements: - Use of Arduino UNO R4 Wifi for data processing and transmission. - Integration of LoRa technology for long-range communication. - Development of a reliable power supply system to ensure uninterrupted operation. - Setup of sensors to detect environmental pollutants (specific sensors can be discussed). Ideal Skills and Experience: - Proficiency in Arduino programming and hardware integration. - Experience with LoRa communication systems. - Knowledge of environmental sensors, particularly for pollutants. - Strong background in power supply design for electro...

I need to replace my old SmartDrive-i2c-P.i.D. driver because of this: where, after several attempts, it is proven that the SmartDrive i2c P.i.D. driver does not run (at maximum motor speed) both motors on my side simultaneously

I am developing a compact wearable lighting device based on an ESP32 (ESP-NOW communication + WS2812 LEDs + LiPo battery system). This project is already in progress. I have an existing schematic and PCB layout, but I am looking for an experienced engineer to review, improve, and finalize the design for production. This is not a one-pass project. It will likely require back-and-forth discussion and iterative refinement to arrive at the correct final design. I want to be clear that I will be actively reviewing the work and asking questions as I go. I need someone who is comfortable with that process and open to collaboration. I do not want a situation where I feel hesitant to point out concerns or request changes. --- ### Critical Requirement (Very Important) This device must reliably...

I have a working Arduino Nano sketch that I now need running on an STM32. The project must be opened, built and flashed entirely inside STM32CubeIDE, so please base every file and configuration step on that toolchain. Key points you will handle • Rewrite the existing sketch for the chosen STM32 device, configuring clocks, GPIO, interrupts and peripherals exactly as needed. • Replace the current Arduino-style calls with HAL-based code generated in CubeMX, keeping the program logic identical. • The original sketch drives an OLED via a third-party library; the same display has to work on STM32, so include whatever open-source driver (U8g2, SSD1306 HAL port, etc.) you feel is most stable. • Alongside the source, provide a short step-by-step guide that shows how t...

PLC Developer (Chakan MIDC, Pune) We are looking for an freelance PLC Developer for on-site work at Chakan MIDC. Scope of Work: PLC programming, troubleshooting, and debugging HMI development, modifications, and issue resolution Diagnosing and fixing control system issues on-site Interfacing with sensors, actuators, and industrial equipment Supporting commissioning and testing activities Required Skills: Hands-on experience with PLCs (Siemens / Allen-Bradley / Mitsubishi preferred) Experience with HMI systems (WinCC, FactoryTalk, etc.) Strong debugging and problem-solving skills Ability to understand existing programs and modify them efficiently Familiarity with industrial communication protocols (Modbus, Profinet, Ethernet/IP) Location: On-site: Chakan MIDC, Pune Duration: Project-bas...

I need a control system for two electric motors, each drawing 2.5 amps. The motors should be controlled sequentially using manual rotary switches. Requirements: - Control both motors with manual rotary switches - Motors should be controlled sequentially Ideal Skills and Experience: - Experience with electrical systems and manual switches - Familiarity with controlling electric motors - Ability to design a simple, safe control setup

i want a PCB for in-situ, real-time verification of sensor integrity in a live without interrupting the control process of components of PCB for cooling, heating and humidity, communication ports and AutoDetect sensor frailer equipment' because hardware often operates in controlled, safety-critical, and validated environments layout Design with components of advanced PCB for control /set point and manage temp of cooling sensor , heating sensor and humidity sensors, light sensor, proximity sensor, water low sensor, pressure sensor, high/low voltage sensor, wire and wireless commination ports lan, usb, can bus, rs-485 etc, processor, ram, memory, and AutoDetect sensor frailer, all types of alarms like heater, compressor, open door, high/low temperature with voltage protection, tempe...

I need a complete electronic design for a next-generation health-monitoring smartwatch whose signature element is a high-resolution micro camera mounted flush to the wrist side of the case. That camera will analyse the wearer’s skin to extract deeper, image-based health insights beyond the usual heart-rate and SpO₂ readings. I am open to your proposals on exactly which metrics image processing can reveal, provided they are scientifically sound and can be handled by an embedded processor in real time. Core hardware requirements • High-resolution skin-facing camera, paired with a wearable-class microprocessor powerful enough to process or compress the image stream on-device. • Minimum 16 GB on-board storage for captured data. • Bluetooth for data sync, a vibrant T...

I need a production-ready printed circuit board for a compact consumer-electronics tracker. The board has to combine Bluetooth connectivity for smartphone pairing, GNSS positioning for global location data, a LoRa module for long-range updates, and a 3-axis motion sensor to wake the unit only when it moves. Everything will run from a single rechargeable battery, so careful power budgeting and a low-power microcontroller are essential. Form-factor will be small enough to slip into a key-tag style enclosure, so component height and antenna placement must be considered from the start. I’m flexible on the exact silicon—Nordic, Espressif, STM, Semtech, etc.—as long as you can justify part choice against current draw, cost and global availability. Please take the design from ...

I need one experienced PLC engineer to join our commissioning crew on-site for roughly 15 consecutive nights (16:00–24:00). The equipment mix is a backlight-assembly machine paired with a roller-conveyor line, all driven by Keyence PLCs. What you’ll actually do • Take the partially written specifications we supply, fill the gaps, and build fully functional programs for both the backlight machine and the conveyor line. • Load, test and fine-tune those programs on the factory floor until the machines run to target cycle time and quality without alarms. • Work side-by-side with our existing commissioning team, but operate independently when required; I’m counting on your proven project experience to keep nightly progress on track. Key expectations &b...

I have three interconnected PCBs for an IoT-enabled cooking system and I need a fresh, expert set of eyes on the schematics before they move to layout and certification. My main objective is to drive up reliability while making sure every track and component choice can sail through both UKCA and CE assessments without last-minute redesigns. Here is the current state of play: • Power PCB – handles distribution and uses fully-isolated 12 V AC relays • Controller PCB – AVR32DD32 MCU with four MAX31865 RTD ADCs and RS-485 bus • UI PCB – ESP32 (external esp32 approved antenna), RS-485 bus, 5-inch EVE4 touch screen, 4 x multicolour LEDs and audio out The Power board, the Controller board and the UI board all matter equally to me in terms of long-term robu...

I need three 7-10" quad-copters professionally put together and flight-tested in the UK. All the parts will be shipped directly to you; once they arrive I’d like the build, setup and maiden flights completed within roughly a week. Core spec: • Air-frames: 7-10" class • Electronics we will supply: FPV camera, GPS module and an onboard Raspberry Pi for extra processing • Flight controller: whatever board you are comfortable with, as long as the final stack runs PX4 flawlessly • Power: LiPo packs – please balance, secure and tune for safe discharge rates Your job starts with a clean assembly, neat soldering and reliable cable management, then moves on to firmware flashing, PX4 configuration, PID tuning and a short hover/flight test tha...

I am building a new solar-hybrid inverter around an Infineon reference design and need an experienced technical advisor who can work with me on-site in Bangalore, part-time, through the entire prototype cycle. Your guidance is required across hardware design, firmware development, hardware fabrication, integration and final testing. Most of the base schematics and application notes from Infineon are in hand; what I need now is a sharp eye and skilled hands to adapt those documents to my exact power ratings, oversee PCB layout iterations, supervise fabrication, bring the boards up safely, write and debug the control firmware, and validate the finished prototype under load. Expect plenty of hands-on lab work—oscilloscopes, power analyzers, thermal cameras, rework stations—plus...

I’m looking for a senior technologist who can sit with my Bangalore-based team and guide us through the full hardware-software stack of our new UAV prototype. The work is hands-on and spans three pillars: hardware design, embedded-software bring-up, and end-to-end integration testing. On the hardware side you’ll dive into sensor integration, power-management architecture, and lightweight frame design, checking schematics in Altium/KiCad, reviewing BOM choices, and helping us close EMI and thermal issues. In parallel, you’ll pair with our firmware engineers to refine drivers, control loops and companion-computer interfaces (C/C++, Python, PX4 or ArduPilot experience is ideal). Finally, you’ll shape and run a systematic integration-test plan—bench, HIL and flig...

I need a clean, well-commented Arduino sketch that drives a small traffic-light prototype using LEDs, push-buttons, and a couple of sensors (e.g., ultrasonic or IR) to regulate flow rather than just cycle through a fixed sequence. The idea is to simulate a real intersection where vehicle presence triggers state changes while manual override buttons allow testing of special conditions. Here’s what I expect: • The code must compile on the current Arduino IDE without extra libraries beyond the standard ones. • Normal operation: red, yellow, and green LEDs follow proper timing, but a vehicle-detection sensor shortens or extends green time to keep traffic moving smoothly. • A pedestrian button interrupts the flow safely, inserting a walk phase before resuming. &bul...

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

I’m building a single-phase grid-tie solar inverter around the STM32F103 and need both the hardware completed and the firmware written. The control board must handle MPPT, keep perfect grid synchronization, and expose real-time data for remote monitoring. Firmware requirements • Implement a reliable MPPT algorithm suited to PV strings. • Keep the inverter phase-locked to the utility, injecting power with a clean sinusoid and rapid anti-islanding response. • Expose operating metrics (voltage, current, power, temperature, fault states) through Modbus, CAN bus, and Ethernet. Hardware requirements • Schematic and PCB layout for the STM32F103 control board, opto-isolated gate-drive interfaces, sensing circuitry, surge protection, and communication ports. ...

I’m refining a set of custom boards that combine an FPGA-based signal generator with several ESP32 modules. The immediate gap is in analog and digital circuit design: I need a fresh set of eyes to review, debug, and improve the front-end and conditioning stages so our multi-channel waveforms stay clean from kHz up into the low-MHz range. You will also find yourself touching the programmable logic; I use both VHDL and Verilog, so fluency in either (or ideally both) is welcome when tweaks to the signal-generation core are required. On the microcontroller side each ESP32 handles data processing, manages communication protocols, and drives attached peripherals, all written in C/C++. Expect to dive into that firmware whenever hardware changes ripple upward. Key objectives • A...

I’m building a compact embedded platform that runs from a single 12 V supply and I need a purpose-built PCB to act as the system’s brain. The board has to host a microcontroller at its core, interface cleanly with several sensors, and drive multiple actuators, all while keeping noise low and layout tight. Here’s what I’m looking for: • Complete schematic capture showing microcontroller, sensor inputs, actuator drivers, power-conditioning and protection circuitry • PCB layout ready for manufacture (Gerber/ODB++ files, drill, pick-and-place, clear layer stack details) • Bill of materials with part numbers that are currently available from major distributors • Basic power-up simulation or design rule check report proving the 12 V rail and o...

I need a clear, ready-to-build circuit diagram that closes the voltage feedback loop on the DC bus of an off-grid inverter running in the 12 V – 24 V range. The diagram must show how a suitable voltage sensor feeds a microcontroller so the firmware can keep the bus voltage within safe limits and trigger protective actions when it strays. Please size all resistive dividers, isolation devices (if required), and any signal-conditioning stages so the microcontroller’s ADC receives a clean, scalable signal. What I expect from you • Complete schematic, preferably drawn in KiCad or Altium, showing the microcontroller, voltage sensor path, power supply rails, and any filtering or isolation you recommend. • Short bill of materials with part numbers that are actually ...

My Texas Instruments LM5170EVM-BIDIR board refuses to deliver any output voltage when I switch it to buck mode. Boost mode also does not run, so I’m convinced the fault is somewhere in power stage or its sensing network. I haven’t probed or ruled anything out yet—no continuity checks, no component swaps—so you’ll be starting with a completely untouched setup. I do have both a multimeter and an oscilloscope on the bench, so I can feed you real-time measurements, screenshots, or scope traces as we move through your diagnostic plan. A hardware-level approach is exactly what I’m after: schematic review, expected waveforms, component-level tests, and, if it comes to it, guidance on swapping parts or jumpers to bring the regulator to life. Description: Contr...

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.