Mikrokontroler Jobs

The indoor and outdoor units for a single-zone split-type air conditioner are on-site and ready to go; the wall opening and electrical feed in the living room are already prepared. I need a technician who can: • Mount the indoor unit securely on the existing bracket and seal around the pre-cut hole • Position and anchor the outdoor condenser, observing manufacturer-specified clearances • Run refrigerant lines, drain hose, and power cabling through the prepared passage, then pressure-test, vacuum, and charge the system correctly • Connect to the dedicated electrical circuit, verify proper grounding, and tidy up any conduit or trunking • Power up, test all modes, and walk me through basic operation Please bring the gauges, vacuum pump, flare tools, torque w...

I have an open-hardware setup that links a meshcore nRF52840 repeater to a Raspberry Pi, all powered by a 5 W solar panel and small battery pack. The Pi should stay asleep until the repeater’s heartbeat stops, then wake, push the latest meshcore firmware, and put the radio back online. Before I fabricate anything, I need an experienced hardware designer to go over the schematic and improve it, with special attention to two areas that matter most to me: • Mainboard layout – it must be tidy, electrically sound, and robust enough for harsh, remote installs. • Clock timing around the 4060 IC – the current RC network drifts; please replace it with a resonator or another stable solution and verify the timing math. I’m aiming for higher overall reliabi...

1.- It will be a robotics application for pick and place then we will need take some pics to record the position and dimensions of the part with this we can calculate the center mass of this part , so when the camara detects the parts it will send a digital input to register the track position of the part then the dimensions in pixels to convert to mm in X,Y and orientation. 2.- my cam speed is max 30FPs 3.- It will be a fixed position for all the applications and needs to be calibrated on each setup, fixed position on a conveyor belt or rotary table. the scaling factor must be calculated every time so in the script I need to know how to modify this value It will be necessary take pics and process with Roboflow AI and get the file in forma .tflite 4 &5: It will be a Motion Controller w...

A 4–6 layer custom carrier board for a Linux ARM SoM, with on-board audio output, MIDI output, an ESP32-driven LCD UI, and consumer-grade power + service interfaces. A working v1 exists; v2 is a clean redesign targeting production volumes. ## Required interfaces 1. **Linux ARM SoM**, socketed or soldered. We currently use Raspberry Pi CM4; open to alternatives (CM5, Radxa CM3 / CM5, Pine64, custom) — your call based on cost, availability, longevity. 2. **MIDI OUT** — 5-pin DIN and/or TRS-A 3.5 mm, 31250 baud, galvanically isolated. 3. **Stereo line-level audio output** (RCA + 3.5 mm). Target ≥ 110 dB SNR; ES9038-class optional for a higher-tier variant. 4. **LCD display** ~3–5", 600×170 to 800×480 range, driven by a dedicated MCU...

I’m building with Vicharak Shrite Lite a microcontroller-based platform and need the core firmware brought to life. The job is pure embedded programming: writing, testing, and refining code that will run reliably on the vicharak shrite lite Raspberry hardware (Pi or RP2040—). Here’s what I need from you: • Clean, well-documented source code that compiles without warnings. • Pin-accurate control over the onboard peripherals I’ll specify once we start (GPIO, UART, SPI and a couple of ADC channels). • A simple test routine I can flash to verify all functions on the bench. • Clear build instructions so I can reproduce the binary from scratch. If you prefer C/C++ with the Raspberry Pi Pico SDK, bare-metal ARM assembly, or even MicroPython fo...

1. Main Controller • The board’s main controller will be a microcontroller from the Teensy 4.0 class. It must have sufficient processing speed and GPIO capacity. 2. Integrated ESC • The board will feature a built-in ESC for driving a brushless starter motor. • It must support a current capacity of ≥40A. • The ESC will be powered by a 3S-4S battery. (Minimum 11.1–14.4 V, Maximum 12.6–16.8 V) • The necessary protection and secure signal connections must be provided between the motor driver and the controller. 3. Glow Plug Output • The board will include a power switching output for the glow plug. • It must support a current capacity of ≥16A. • On/Off control is sufficient. • The glow plug will be powered by 3S or 4S volt...

We are seeking experienced Electrical/Electronics Engineers to review manufacturer datasheets and accurately extract or verify technical data using our secure, web-based platform. All work is performed inside our portal with detailed step-by-step instructions. This project does not require access to customer designs or schematics. Make sure to answer these and put in your bids 1. What is the difference between a component's Absolute Maximum Ratings and Recommended Operating Conditions? 2. Decompose "LDO, 3.3V, 500mA, SOT-23-5" and explain each element. 3. Name the two signals on an I2C bus and describe their functions. 4. Are you bidding as an individual or a team? If a team, provide the number of members and technical background of each. 5. Confirm your availability...

Solicitud de presupuesto – Controlador DMX para 8 motores paso a paso independientes Hola, Estoy buscando desarrollar un controlador personalizado para instalaciones artísticas y motion control basado en motores paso a paso controlados mediante DMX512. La idea es desarrollar un dispositivo dedicado, robusto y reproducible, pensado para futuras instalaciones y sistemas cinéticos. Características generales deseadas: Entrada DMX512 Alimentación externa mediante fuente de alimentación 8 salidas independientes para motores paso a paso NEMA17 Capacidad para controlar los 8 motores simultáneamente e independientemente entre sí Cada motor debe poder recibir y ejecutar información distinta en tiempo real mediante diferentes ca...

I need a compact piece of software that will run a closed-loop control algorithm for an AC motor, using a Hall effect sensor as the sole feedback device. The firmware will sit on a microcontroller that is already wired to the motor driver stage; what’s missing is the logic that reads the Hall pulses, calculates speed and position error in real time, and then updates the drive signals so the shaft tracks a commanded RPM with tight accuracy. Here is what I expect to receive: • Well-commented source code (C or C++) that compiles with GCC/Clang, plus a makefile or project file. • A brief user guide outlining pin assignments, interrupt timing, and how to tune the gains. • A short test log (scope screenshots or serial prints are fine) proving the loop holds speed within...

Je souhaite réaliser un petit module capable de faire varier la vitesse d’un moteur à courant continu (DC) à l’aide d’un potentiomètre rotatif. Voici ce que j’attends : • Conception du schéma électronique et choix des composants (transistor, MOSFET, driver, protection, etc.) adaptés à une plage d’alimentation typique de 12 – 24 V. • Routage d’un circuit imprimé compact, prêt pour fabrication (fichiers Gerber + BOM). • Proposition d’un code microcontrôleur ou d’une solution purement analogique ; je suis ouvert aux deux du moment que la variation reste fluide et linéaire sur toute la course du potentiomètre. • Documentatio...

PCB Designer Needed for Small LED Headphones Music Player Board with 1GB Storage I need an experienced PCB designer to create a small manufacturable PCB for LED headphones. The main purpose of the device is to play music without a phone. Bluetooth is optional/secondary, but the product must work as a standalone music player. The PCB should be compact, ideally no bigger than a USB flash drive, around 50 mm x 20 mm or smaller if practical. Main function: - Standalone music playback without phone - 1GB onboard storage for downloaded music - Music should be transferred to the device, preferably through USB if practical - Audio output should go to headphone wires using solder pads or through-holes - No headphone jack required - LED output/control for LED headphones - Bluetooth playback from...

# Embedded Electronics Engineer – AS5311 Linear Encoder System Looking for an experienced Embedded Electronics / PCB Design Engineer to develop a compact linear encoder system using AS5311 magnetic encoder IC and MCU. ## Requirements * AS5311-based encoder reader PCB * Compact display PCB * Embedded firmware development * 3V battery-powered low-power design * Good EMI/noise immunity * Single multifunction button for ON / OFF / RESET * Ribbon cable connection between PCBs ## Performance * Motion range: 2 mm to 6 mm * Target resolution: 0.001 mm ## Deliverables * PCB design * Firmware development * Gerber files * BOM Please share similar projects, relevant experience, estimated timeline, and tools used.

لدي سيارة ‎Hyundai‎ وقد وفرت لها جير (ناقل حركة) مستورد ومجدد بالكامل، وأحتاج إلى فني خبير يتولى التركيب في موقعي. المطلوب هو إنزال الجير القديم، تركيب الجير المستورد مع جميع الوصلات والحساسات، تعبئة الزيت الموصى به من الشركة، ثم إجراء فحص وتشغيل تجريبي للتأكد من تبديل السرعات بسلاسة وعدم وجود أي تسريب. أُفضّل من لديه خبرة سابقة مع طرازات هيونداي بالتحديد ويملك أدوات الورشة الكاملة لعمليات فك-وتركيب نواقل الحركة، إلى جانب جهاز فحص OBD لضبط الأرقام ومسح الأعطال بعد الانتهاء. تسليم العمل يُعتمد بعد: • إنهاء التركيب دون تعديل أو قص في هيكل السيارة. • اختبار طريق لا يقل عن 20 كم مع تبديلات نظيفة وخالية من الضوضاء. • تقرير مختصر عن مستوى الزيت، الكودات قبل وبعد، وأي ملاحظات إضافية. إن كانت لديك الخبرة في جيرات ‎Hyundai‎ وتستطيع الحضور إلى الورشة خلال الأيام...

My car’s brakes have begun squeaking and I can feel the stopping power fading, so I’m looking for a mobile mechanic who can come to me for a full brake service. This is routine maintenance, not an emergency, but I would like it handled soon so the problem doesn’t get worse. Here’s what I expect: • A thorough inspection of pads, rotors and fluid • Clear advice on which components should be replaced or resurfaced • On-site installation of the agreed-upon parts • A road-test afterward to confirm the squeak is gone and braking performance is restored Please bring the appropriate tools for modern disc-brake systems—torque wrench, caliper compressor, brake bleeder, and an OBD scanner in case any codes need clearing. Let me know your earliest av...

I have fifteen disassembled original first generation "cigalike" e-cigarettes waiting for fresh new cells. The spent batteries still have to come out; I’ll supply the brand-new replacements along with step-by-step instructions I’ve written from my own repair notes. Once each cell is tinned and soldered, the board and wiring need to slide back into the original metal tubes that I will ship with the lot. After reassembly I need every unit verified for both firing (making sure the LED end eliminates, and it produces vapor,) and charging. A simple functional puff/hit-to-vape check is the first pass, then confirmation that each battery takes and holds a charge using a charging USB that I will provide. If anything reads off, I’d like a quick note so we can decide whe...

I need a clean, ready-to-build schematic for a compact keyboard that uses an Arduino Micro as the controller. The board is for everyday, general use and will be arranged in a 3-row by 3-column matrix, with an additional key to switch between 4 modes. (10 keys in total). Hot-Swap Keyboard for the keys. Add diodes Include a 2 layer LCD Display that can be programmed on the Arduino Pro Mirco. Besides the usual character input, I want a few of those keys assigned to media functions—play, pause, volume up/down—and a couple reserved for custom macros. If you include diode placement and a clear pin map from the key matrix to the Arduino Micro’s GPIO pins, that will make firmware-writing straightforward on my side. PCB must be spaced to fit a 3d Printed enclosure Please del...

I need a compact acquisition board that reads pressure sensors and sends data by Bluetooth and Celullar (SIM). Your job covers both the hardware and the embedded layer that will live on the board. System Requirements : A custom PCB (embedded system) must be designed to interface with the sensor. The system will be powered by an external battery, for which voltage and current requirements must be carefully calculated. The PCB will receive pressure data from the sensor through front-end components directly connected to the electrode outputs. A microcontroller (MCU) will scan the matrix at high frequency by sequentially energizing one electrode (e.g., rows) and measuring responses across perpendicular electrodes (e.g., columns). This scanning process allows detection of pressure points acros...

I need a complete hardware-to-firmware solution for a low-power, standalone temperature and humidity monitor that relies on 4G/LTE rather than Wi-Fi. The core will be an ESP32 driving a SIM7600G module, paired with a DHT22 sensor. Collected readings must be published over MQTT to my Supabase/PostgreSQL back-end. The device will sleep most of the time, wake on schedule, take a reading, push it securely, then drop back into deep sleep. It also has to recognise a lost cellular link, attempt reconnection gracefully, and log any failures for later review. Power comes from a Li-po pack, topped up through a USB-C port, so the design needs an efficient charging and protection stage. Please deliver: • Complete, readable schematic (PDF + source) • Production-ready PCB layout with G...

Prosimo, vpišite se ali se prijavite za več podrobnosti.

Firmware Adaptation for CH591 From CH592

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

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

I’m looking for a freelance robotics/mechanical engineer to help build a small ambient companion robot prototype called Madison Orb v1. This is an early-stage, hands-on prototype project focused on creating a calm, premium-feeling robotic presence — not a toy robot or research platform. The overall concept, industrial design direction, behavior philosophy, and initial STL reference files are already defined. Updated design references and prototype specifications are available. Key Design Direction (UPDATED) The project has evolved from a basic mobile robot into a more refined ambient companion concept with: egg-shaped enclosure design (not a perfect sphere) glossy black front visor single expressive LED light ring (instead of cartoon eyes) matching ambient LED band around t...

Seeking a Software Developer & Electronics Engineer building innovative IoT and embedded systems. Must have experience and sample project regarding Vending machine connected with Raspberry pi through MDB-to-RS232. Please include sample project screenshots or url. Answer one question about attached screenshot. "What do numbers in request mean? What is MDB Interface command to vend approval from Raspberry Pi? If you don't include above reference and answers, your bid will be ignored. Best

Job Description: We have an existing football betting/gambling platform source code and need an experienced freelancer/team to complete, fix, test, and launch it before the 2026 World Cup. Main Tasks: Review existing source code Fix bugs and missing functions Improve website UI/UX for desktop + mobile Set up admin panel, user panel, odds/match display Wallet, deposit/withdraw, reports, P/L summary Security check and server deployment Full testing before launch Make system stable for high traffic during World Cup Required Skills: PHP / Laravel / Node.js / React / Vue / MySQL Betting/gambling website experience API integration Payment/wallet system Admin dashboard Server setup: VPS, Nginx, SSL, Cloudflare Security and anti-bug testing Important: We already have source code. We need some...

I’m rolling out an industrial-grade IoT solution to supervise and control an oil-filtration line. The job spans embedded firmware through to field wiring, so I need someone who is equally comfortable writing low-level code and crimping a terminal block. Scope of work The core task is to design and deploy a complete connected node (or nodes) that gathers data from the filtration skid, pushes those readings to a cloud or local dashboard, and executes real-time control logic. You’ll decide the microcontroller or SBC platform, pick the right sensors for viscosity, particulate count, pressure or any other parameter critical to oil quality, and integrate them cleanly into existing panels. A solid grasp of industrial protocols (Modbus, CAN, Ethernet/IP, etc.) will be helpful becaus...

I'm looking for an experienced circuit designer to create a circuit using ESP32 and TMC5160T. The circuit should support motor control, sensor integration, and communication modules, all controlled via an app I've already designed. Key requirements include: - Motor Control: Implement TMC5160T for precise motor control. - Sensor Integration: Incorporate various sensors as per the app's requirements(Which is to execute a specific Trajectory given by the user). - Communication Module: Utilize ESP32 for robust communication. Ideal skills and experience: - Strong background in circuit design (both analog and digital) - Proven experience with ESP32 and TMC5160T - Familiarity with app-controlled systems - Knowledge in motor control ( Stepper and Brushless ones with encoders )and...

Preciso desenvolver um Módulo de Distribuição de Energia com 18 saídas, inspirado nos PDM15 que já uso como referência interna. O objetivo é assegurar três funcionalidades cruciais desde a primeira versão: proteção contra sobrecarga em cada canal, monitoramento remoto em tempo real e controle individual de todas as saídas. Quero comandar e visualizar tudo numa interface web amigável, acessível tanto em desktops quanto em smartphones; portanto, a parte de firmware e a camada de software devem expor servidores HTTP-REST ou WebSocket que facilitem integrações futuras. Ainda não defini requisitos de compatibilidade com sistemas externos, então o código e o hardwar...

Title: PCB Design for Low-Cost Industrial Electricity Monitoring IoT Device We are looking for an experienced PCB design / embedded hardware engineer to design a low-cost industrial electricity consumption monitoring device. The device will be used in an industrial factory environment to monitor electrical parameters and send data to a server through IoT. Project Goal We want to develop a compact and reliable PCB for monitoring: Voltage Current Power consumption Energy consumption / kWh Power factor, if possible Basic electrical health/status data The device may use ESP32 or any suitable low-cost microcontroller, but the final solution must be practical, reliable, and cost-optimized. Main Requirement The most important requirement is low total product cost. The PCB design mu...

I need production-ready firmware for an STM32F303 that turns the microcontroller into a front-end for high-speed digitisation of SDR signals. The chip’s ADCs must sample the incoming RF-baseband stream, move the data through DMA with minimal latency, and prepare it for onward transmission over a fast serial link (either SPI or UART—whichever achieves the cleanest, sustained throughput on this part). The core of the job is sensor-style data processing: capture, buffer, and pre-format the raw samples so that an external host can handle the heavier DSP. No motor-control, no classic temperature or pressure sensors—just clean, reliable handling of SDR-grade analogue input. Key expectations • Continuous, gap-free acquisition at the highest practical sampling rate for t...

Here is the professional project description in English, ready to be posted on platforms like Upwork, Fiverr, or Freelancer.com. Project Title: Hardware Design (Schematic & PCB Layout) for Ultra-Low Power BLE Motion Sensor (nRF52810) Project Description: I am looking for an experienced electronics design engineer with a background in Nordic Semiconductor SoCs to develop a compact, high-efficiency PCB for a motion-tracking sensor node. Hardware Requirements: MCU: Nordic nRF52810 (BLE 5.0 SoC). Sensor: STMicroelectronics LIS2DW12 (3-axis accelerometer, ultra-low power). Memory: Winbond W25Q512 (512Mb SPI Flash) to store 15 days of data at 6Hz. Power Source: CR2032 Coin Cell Battery (Design must be optimized for low peak current/high internal resistance). Antenna: Integrated PCB T...

I need a PCB created for a new piece of consumer electronics. The board will sit inside a medium-sized enclosure, so components can be spread out a little more than in an ultra-compact wear-able, yet space efficiency still matters. Core requirement: We have Samples of the PCB and we want its design with bom list. Also we want some addition in our current working pcb board. Details of project given in attachment. Please work in your preferred professional tool (Altium, KiCad, or Eagle are all fine) and provide: • Schematic capture • Neatly-routed PCB layout with design files • Gerber/NC drill set ready for fabrication • Bill of Materials with part numbers and footprints • Optional 3D step model if your package supports it I will review the schematic firs...

I have a proof-of-concept in mind that will let me switch household appliances on and off from a distance using LoRa and an ESP32. The focus is purely remote control—no fancy scheduling or parameter tweaking for now—so reliability, range and low-latency switching are the priorities. I already work with the Arduino IDE and PlatformIO, but I need someone who has hands-on experience pairing ESP32 boards with the right LoRa transceiver (SX1278, RFM95, or any module you know performs well). You’ll guide the hardware choices, write the firmware, and make sure the receiver node triggers a solid-state relay (or a simple LED during testing) whenever the transmitter sends an ON/OFF command. Deliverables: • Schematic or wiring diagram for both transmitter and receiver nodes ...

I’m developing my final-year Design & Technology major work around water safety and need a robust swimming safety monitoring system created fast. The core objective is real-time safety monitoring that instantly recognises when a swimmer is in distress and notifies supervisors without delay. I’m open to the most effective approach you can deliver quickly—whether that’s a wearable sensor set, a vision-based pool camera solution, smart buoys, or a hybrid of these. What matters is proven, repeatable detection of hazardous situations (e.g., prolonged submersion or lack of movement) and an immediate audible and mobile alert. Deliverables • System architecture diagram showing all hardware and data flow • Complete component list with datasheets or purcha...

We are seeking proposals from qualified UAV professionals for the customization a DJI Agras T100 via physical and/or firmware modification. Background: Our client had facilitated a 14 CFR 89 exemption from Remote ID for the purpose of aeronautical research. Physical access to the T100 is available in Long Island, New York if you require physical access to complete the modifications. Deliverables: You are to propose and implement modifications that allow the T100 to operate without broadcasting Remote Identification (“RID”) per the facilitated regulatory exemption. The solution in your proposal can either make the RID toggliable or permanently disabled via hardware and/or firmware modification. We are interested in an additional minor modification or two, which we will likely...

I already have a DC-AC inverter topology in mind; what I need is a clean, reliable LTspice setup that lets me run steady-state and transient simulations without wrestling with convergence errors or unrealistic device models. Your role is to build the .asc file, choose appropriate MOSFETs/IGBTs, drivers, passive values, and set the simulation commands so I can quickly observe output voltage waveforms, switching losses, efficiency, and harmonic content. Because this job is strictly about simulation setup—not schematic design from scratch or custom code—I expect: • A ready-to-run LTspice project file (.asc) with all supporting libraries • Clear comments inside the schematic so I can tweak component values later • A brief note (PDF or text) describing the key s...

I have an ESP32 Basic Core IoT Development Kit V2.7 installed in my truck and need firmware that will warn me whenever the Starlink router stays powered after I switch the ignition off. The sketch should watch a dedicated ignition-sense pin: while the line is high the unit does nothing special, but as soon as it goes low it must keep polling the Wi-Fi connection status in code. If the ESP32 is still associated with any network after a user configurable amount of time, an on-board LED must begin to flash, screen starts flashing and the internal speaker must chirp in tandem until the Wi-Fi link drops or the ignition is restored. I would like a simple LCD screen interface on the kit’s I²C display that shows real-time states (“Ignition ON / OFF”, “Wi-Fi CONNECT...

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.