Arduino jobs

I already have a batch of 2.1-inch round 360 × 360 GC9B72 TFT panels from and now need the electronics and software ecosystem that turns them into a r...and clock modes. Acceptance criteria • Any number of tiles up to at least 36 auto-map correctly after power-on. • Latency low enough that the clock’s seconds hand or colour transitions remain visually smooth. • Pattern editor responds in real time and matches what appears on the physical grid. • All files build and run using open-source toolchains (KiCad preferred for PCB, PlatformIO/Arduino-CLI or similar for firmware). With this complete system I can ship Gerbers to my PCB house, assemble the modules, open a browser and start painting with light on a wall of round displays—no extra ...

...ESP32-based prototype uses the MSME INNP441 digital mic, and during live audio streaming it introduces jitter and a screeching interference noise—even though the board sits in a quiet lab. I have already updated the firmware, swapped in fresh hardware, and tweaked every software register I could reach, yet the distortion persists. I’m looking for someone who can dive into the existing C/C++ (Arduino-style) code, analyse the I²S configuration and clocking, and track down whatever is corrupting the audio path. If a schematic or logic-analyser trace is helpful, I can supply both. Any fix should leave us with clean, stable voice capture that we can push straight to our streaming stack. Because this is part of our in-house tech, I will provide the full repository ...

I’m building a compact pan-tilt head that can be driven remotely with a small camera module and a laser pointer ride on top of it. The primary goal is reliable pan-tilt motion and foundation for future development. Here’s what I need from you: • A motorized pan and tilt mechanism sized for a lightweight camera board and laser diode. • Control electronics (Arduino, Raspberry Pi, or similar—whatever you prefer) with firmware that exposes over serial communication. • A simple desktop or mobile interface so I can jog the rig manually, start/stop tracking, and toggle the laser. • Assembly instructions, wiring diagrams, and commented source code so I can reproduce the build. Acceptance test: demonstrate adequate homing and motion control. I...

...should update in near-real-time without manual refresh. Key expectations 1. Fully commented Arduino-style code (ESP-IDF is fine too) that hits the above metrics with my exact sensors. 2. A lightweight backend or direct ESP32 HTTP endpoint to accept the JSON, store it, and feed the dashboard. 3. Responsive dashboard pages showing both line charts and tabular data for each variable, plus cumulative kWh and total runtime counters. 4. Clear setup instructions so I can reproduce the build from flashing the ESP32 through opening the dashboard. If you’re experienced with ESP32, sensor calibration, PZEM energy metering, HTTP/JSON APIs, and chart libraries such as or similar better if Arduino IDE, let’s get this running....

I want to create a branded control board that keeps the familiar Arduino UNO R3 footprint yet swaps the ATmega328P for an ESP32. The finished board must: • expose the usual analog inputs, PWM outputs, serial ports and full digital I/O • break-out every pin through sturdy screw terminals instead of header pins • carry an on-board battery cradle for two 18650 cells (3.7 V each) and an integrated 2-cell BMS • arrive pre-flashed so 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 Gerb...

I'm looking for an experienced Arduino developer to create an interactive experience. The project can be tailored towards educational activities, entertainment/games, or an art installation. Ideal Skills and Experience: - Proficiency with Arduino and microcontrollers - Experience in designing interactive systems - Knowledge of various sensors (temperature, motion, light) - Ability to implement diverse outputs like LED effects, motor movements, and sound Please provide examples of previous work and relevant skills.

I’m building a proof-of-concept that lets an ultra-low-power board—specifica...within the ESP32’s limits. If you’re interested, send a detailed project proposal outlining: • The model architecture you would adapt or design (e.g., TinyML CNN, MobileNet variants, 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 ca...

Project Overview I am developing a commercial automotive telematics device for the Indian market. The product will be used for fleet management, GPS tracking, vehicle diagnostics, driver behavior monitoring, and future FASTag ecosystem integration. This is **NOT** a hobby or Arduino-based project. I require an industrial-grade PCB design that can be manufactured in China through PCBWay, JLCPCB, or a similar PCB assembly service. The final deliverable should be ready for prototype manufacturing and later mass production. I am looking for an experienced hardware engineer or embedded systems engineer who has previously designed automotive telematics devices, GPS trackers, CAN bus products, IoT hardware, or vehicle diagnostic devices. --- # Objective Design one universal hardware...

STM32 BLDC Motor + Heater Controller — KiCad Schematic, PCB, Gerbers & BOM (Production) Project Description (paste this) I need an experienced hardware/PCB engineer to redesign an existing Arduino/IR2104-based motor controller into a production-grade STM32-based controller board using KiCad. Scope: • Full KiCad schematic (multi-sheet) and 4-layer PCB layout • 24V 3-phase BLDC motor control with hall-sensor feedback • Integrated 3-phase gate driver + MOSFET bridge (modern driver preferred) • 24V heater control with temperature feedback and hardware fail-safe • I2C ToF/distance sensor connector (VL53L0X-class) • UART interface to a main controller, incl. UART-bootloader OTA path (BOOT0/NRST control) • SWD debug/recovery header ...

...similar low-voltage output. I need help with both the concept and the physical prototype. What I need help with: - Prototype concept and layout. - Basic circuit planning. - Material selection. - Physical assembly of a small model. - Simple working demonstration of solar charging and output. Preferred skills: - Solar panel integration. - Low-voltage electronics. - Product prototyping. - Arduino or simple circuit experience. - Mechanical/fabrication skills. Project scope: This is a school-level prototype, not a commercial product. The focus is on creativity, functionality, and clear presentation. Location: Delhi NCR preferred. Budget: 10,000 rs INR Please include: - Relevant past projects. - Whether you have worked with solar prototypes before. - Your expected ti...

I have an electro-mechanical proto...prototype under way in my Okhla (Delhi) workshop at "Vishle dot com" and I need an developer , functional 3-D CAD assembly in SolidWorks. The build blends electrical components, classic mechanical parts and a compact hydraulic sub-system, so a solid grasp of mechatronics is essential. # in-person time is non-negotiable; I need you in Okhla for hands-on reviews and assembly ##Work on Microcomputer (Arduino / ESP32) connect with breadboard, jumper wire, electrical wiring ###Create designs on Solidworks and we will get the same 3d printed at our labs or Metal fabricated. ####support in the assembly of the prototype. This is phased project , total time will be 6 months with multiple projects we are a startup hence each proj...

...reliability. - Assist with experimental validation using bench-level hardware. - Compare simulation results with real hardware measurements. - Prepare plots, tables, technical notes, and documentation for project reporting. -Support troubleshooting of embedded circuits, sensor communication, and data logging. Required Skills and Experience - Embedded systems and microcontroller-based design. - ESP32, Arduino, or similar development boards. - MATLAB and Simulink modelling. - I2C, I2S, UART, BLE, or Wi-Fi communication. - Basic electronic circuit design and testing. - Sensor interfacing, especially IMU or distance sensors. - Data collection, analysis, and performance evaluation. - Power measurement and latency testing. The Research Assistant will contribute to: - A MATLAB/Simuli...

I have a simple mechanism driven by a single DC motor, and I want to hand its entire routine over to an Arduino. What I need is a clean, well-commented sketch that will: • reverse the motor on command, and • keep it running in either direction for user-defined time intervals. I will supply the board, the motor, a standard H-bridge driver and the power supply; you supply the logic. Along with the code, please include a concise wiring diagram so I can reproduce your setup exactly, plus a brief README that explains how to adjust the run times and change-direction trigger in Arduino IDE. Acceptance criteria – Uploading the sketch to an Arduino Uno starts the motor cycle without further edits. – The motor reverses reliably each time the preset...

...Behavior Fast boot (<5 seconds preferred) Auto detection of sensors Assign wheels (LF/RF/LR/RR) 5. Power Handling 12V automotive input Stable operation during engine crank Low power standby mode optional Nice-to-Have (optional, not required): Smooth gauge-style UI (LVGL preferred) Animated startup screen Night mode dimming Settings menu for thresholds Deliverables: Fully working ESP32 firmware (Arduino or ESP-IDF acceptable) Wiring diagram Basic explanation of sensor decoding method UI implementation Build instructions Important Constraints: Must be reliable in automotive environment Must not rely on cloud, phone app, or external services Must work offline Must be reproducible for 1-unit prototype build...

RFID & Arduino Prototype Developer Needed (Embedded Systems) We are looking for a skilled developer with hands-on experience in RFID and Arduino-based embedded systems. The ideal candidate should be comfortable working with RFID readers, tags, and microcontroller programming for prototype development. Experience integrating sensors, serial communication, SPI, I2C, and UART peripherals is highly preferred. You should be able to design, test, and troubleshoot both hardware and firmware efficiently. Knowledge of C/C++ programming for Arduino platforms and debugging embedded applications is required. Experience with ESP32, STM32, or similar microcontrollers is a strong advantage. Familiarity with access control, asset tracking, inventory management, or IoT applications...

Pcb design of arduino Pcb design

...peristaltic pumps, screw-terminal connectivity throughout, LM2596 buck converter, BIS-approved SMPS adapter. Firmware Features ESP32 (Arduino IDE or ESP-IDF), Wi-Fi captive portal provisioning (no hardcoded credentials), local web dashboard, per-pump scheduling (RTC-backed, ml-based), calibration wizard, manual dose, manual prime (continuous run until stopped), configurable max-runtime safety cutoff with buzzer alarm, missed-schedule push notifications, watchdog, brown-out protection, NVS-persisted settings. Requirements Demonstrated ESP32 IoT product experience JLCPCB PCBA workflow experience (LCSC BOM, CPL, assembly) KiCad or EasyEDA proficiency Firmware: Arduino/ESP-IDF, Wi-Fi provisioning, web server, FreeRTOS basics Strong documentation skills Git commits for all del...

Project Brief: Stealth-Modified Automatic Parking Disc (Certified ...fully automatic. No user interaction should be needed after parking. • No visible alterations (e.g., wires, unusual controls, abnormal movement patterns). • Power should remain efficient — preferably still battery-powered or with a hidden upgrade that doesn’t draw attention. Ideal Freelancer Profile: I’m looking for someone with experience in electronics, microcontroller programming (e.g., Arduino), or embedded systems. Ideally, you’ve worked with consumer electronics, automotive modifications, or smart devices before. Both functionality and stealth are equally important for this project. ⸻ Let me know if you have questions or need specific details (such as device models). Loo...

...consistently activates, sprays, and survives repeated refills. 2. All build documentation: wiring diagram, parts list with sourcing links, enclosure files (e.g., STL), and firmware source so I can reproduce or iterate the device. 3. Short demonstration video proving the alarm, spray mechanism, leak integrity, and recharge cycle. I’m comfortable if you prototype with platforms such as Arduino, ESP32, Raspberry Pi Pico, or a custom PCB—whatever meets the durability target best. 3-D printed parts are fine for the enclosure as long as they’re sealed and robust. The device should be designed to sit upright in a box that can be placed directly on the bed next to the sleeper. I’ll approve the project once the unit withstands at least 20 consecutive...

I'm looking for a skilled developer to create an GUI Android app that controls Arduino relay modules via Bluetooth. Core functionalities: - Bluetooth connection to Arduino - Control of 4 relays: turn on/off - Monitor relay status Ideal Skills: - Experience with Arduino and Bluetooth - Android app development - Knowledge in relay modules and control systems Please provide relevant experience in your bids.

I need a straightforward, fully-functional DIY project that I can assemble and demonstrate without extra troubleshooting. Any of the three domains—electronics, electrical, or instrumentation—are acceptable, and I am equally open to Arduino, Raspberry Pi, basic discrete circuits, motor-control rigs, power-supply modules, or lighting systems. Simplicity is key; the design should already be proven to work and require only routine tools to bring to life. What I expect from you: • A concise write-up that explains the underlying concept and its practical use. • Complete schematic or wiring diagram in a common format (PDF, PNG, or Eagle/KiCad file). • Full bill of materials with part numbers that can be sourced locally or online. • Firmware or examp...

...up perfectly with our lights and audio tracks. The scope is focused on code only. Each routine will run as a pre-programmed sequence—once we hit “start,” the figure, lighting cues, and soundtrack must stay in lock-step without any real-time triggers. You will receive: • A timing sheet for every scene • Audio files and lighting-cue lists • Controller specs (primarily DMX and Arduino-friendly boards) Deliverables: • Show files / scripts that drop straight into our controllers • Deployment notes and wiring pin-outs where relevant • A brief video or screen capture proving each sequence stays in sync First routine needs to be ready for testing by early October; the holiday overlay follows in mid-Nove...

...discuss) Reasonable turnaround flexibility — this is a personal R&D project, not a tight deadline What I'm NOT asking for at this stage No custom PCB design No polished app — basic BLE broadcast/readable values is enough No clinical calibration against a reference spirometer (I'll handle validation separately) No enclosure design/manufacturing polish Ideal background Experience with ESP32/Arduino-style microcontroller projects Comfortable with basic analog sensor wiring and BLE GATT basics Bonus: experience with simple 3D-printed enclosures (or willingness to use a basic existing enclosure design) Deliverables 5 assembled, working units Brief documentation: wiring summary, any firmware code used (open and editable, not locked), and notes on h...

...design SHT45 temperature and humidity sensor Relay circuit integrated into the PCB Flat 1000mAh lithium battery support USB-C port for power, charging, serial communication, and firmware flashing from Arduino IDE Battery charging and protection circuit Proper voltage regulation No BOOT and/or RESET buttons Clean component placement and routing Relay screw terminals positioned toward the outside edge of the board USB-C port positioned on the edge of the PCB Compact and professional PCB layout Important USB-C requirement: The USB-C port must allow the board to be programmed/flashed directly from Arduino IDE. It should also support serial monitor communication for debugging. The designer must make sure the ESP32-S3 USB lines, boot mode, reset circuit, and any required pull-...

...testing. I prefer an ultrasonic sensor for rep detection, so please base the design around that. Keep the parts list inexpensive and compact; an Arduino-class board or a tiny ESP32 is fine as long as it stays small, battery-friendly, and easy to assemble with hand tools. What I need from you • A concise bill of materials I can buy locally (microcontroller, HC-SR04 or similar ultrasonic module, power circuit, mounting hardware, enclosure suggestions) • Step-by-step build instructions—including any soldering, 3D-printing, or off-the-shelf case mods—to secure the unit flush to the wall without wobble • Well-commented starter firmware (Arduino IDE/C++ or MicroPython) that initializes the ultrasonic sensor, detects the chest/hand distance chang...

...Pump control logic Sensor integration Manual override functionality Calibration mode Cleaning mode Safety features Future-ready PCB planning Troubleshooting support during prototype development Important Requirements The machine should be: Modular Easy to assemble Easy to maintain Easy to repair Franchise-ready Low cost Reliable for daily commercial use Nice to Have Experience with: ESP32 Arduino Framework FreeRTOS Food dispensing machines Beverage dispensers Coffee machines Industrial automation IoT products PCB Design (KiCad / EasyEDA / Altium) Solid understanding of MOSFET motor control Deliverables Complete circuit diagram Component list (BOM) Wiring diagram ESP32 firmware Modular hardware design Prototype support Documentation Future PCB recommendations Project Type Pro...

Arduino ESP PCB firmware update Arduino ESP PCB firmware update

I need help setting up temperature readings using an Arduino and a Type K sensor for an industrial application. Requirements: - Use a Type K temperature sensor - Display data after analog read Ideal Skills and Experience: - Proficient in Arduino programming - Experience with Type K sensors - Familiar with industrial applications and data display

...goal is to eliminate long mechanical traversing rails and replace them with a compact positioning system. Scope of Work • Mechanical design of compact 2-axis system • Mounting concept for pick opening • Modular approach • Simple enclosure (low IP requirements) • Servo-based positioning system • Fast and smooth motion • Single-point laser system • Microcontroller-based control (Arduino or similar) • Integration with existing PLC commands (activation, referencing, position, velocity, limits) • Control software, motion smoothing, and geometry compensation • Calibration method for accurate positioning Key Requirements Working area: up to 4000 × 820 mm Accuracy: ±20 mm Speed: full travel wi...

This project involves taking a new robotic concept from idea to working prototype. I want to collaborate on everything from requirements definition through mechanical design, electronics integration, embedded control, and field testing. Together we will pin down the exact use-case, decide on suitable actuators, sensors, and processors (ROS, Raspberry Pi, STM32, Arduino, or similar), then move through CAD modelling, simulation, fabrication, and software development in C++/Python. The work will run in clear milestones—concept refinement, virtual simulation, hardware build, iterative tuning, and final demonstration—so progress and feedback stay tightly aligned. Please highlight past builds, preferred toolchains, and any domain specialties (mobile platforms, manipulators, v...

I’ve set up an Arduino with a Shield Host 2.0 so it can sit between my gaming mouse and PC, but I’m stuck getting a “0-recoil” macro loaded and running. The sketch I already have compensates for both vertical and horizontal kick, yet I can’t work out the right libraries, pin definitions, or upload steps to make it behave as a true USB host device. Here’s what I need from you: • Review the script I’ll send, adapt or refactor it so it compiles cleanly for the Shield Host 2.0 and recognises my mouse. • Map the recoil toggle to one of the spare mouse buttons (or a simple hotkey) and make sure it turns on-and-off reliably. • Suggest whether a fixed or easily tweakable version makes more sense; I’m happy to take your adv...

I have an existing Arduino sketch that communicates on Wifi, controls a pump relay and various other similar functions. The project is designed around the M5Stack CoreS3-SE, with a DIN base to provide connector functionality. I now want the whole project running cleanly in PlatformIO. Your task is to take my current codebase, create a PlatformIO project around it, resolve every library and board dependency, and make sure it compiles without warnings. All third-party libraries must be pulled in through so the project is completely self-contained - no manual installs on my side. Because I need this ASAP, I’m looking for someone who has already done a few migrations and can spot typical pitfalls. Once finished, I should be able to clone the repo, hit “Build” in VS ...

We are seeking an experienced consultant to support the development of intelligent el...Experience with microcontrollers, sensors, data acquisition, signal processing, and AI model integration is highly desirable. Responsibilities include evaluating system architectures, assisting with firmware and software design, supporting AI algorithm implementation, reviewing hardware integration, and providing recommendations for performance, reliability, and scalability. Familiarity with STM32, Arduino, Raspberry Pi, Linux, IoT devices, TensorFlow, PyTorch, computer vision, and edge AI applications is a plus. We are looking for someone with strong analytical and problem solving skills who can contribute practical ideas and support technical decisions throughout the complete product developm...

We are seeking an experienced consultant to assist with the design and developm...C, Python, and product development. Experience with Bluetooth, Wi Fi, LoRa, Zigbee, cellular modules, sensors, and power management is highly desirable. Responsibilities include reviewing product concepts, evaluating wireless architectures, assisting with PCB and antenna considerations, selecting components, improving reliability, and supporting prototype development. Familiarity with STM32, Arduino, Raspberry Pi, IoT systems, Linux, and hardware debugging is a plus. We are looking for someone with strong analytical and design skills who can provide practical recommendations and contribute to the complete product development process. This opportunity may lead to long term collaboration for the right ...

We are seeking an experienced design consultant to assist with the development of innovative electronic products and embedded systems. The ideal candidate should have a strong background in product design, PCB design, embedded systems, Arduino, Embedded C, Python, and electronics integration. Experience with sensors, power management, communication interfaces, and system architecture is highly desirable. Responsibilities include reviewing design concepts, evaluating hardware architectures, assisting with PCB and component selection, providing recommendations for manufacturability and reliability, and supporting prototype development. Familiarity with STM32, Raspberry Pi, IoT devices, Linux, automation systems, and hardware debugging is a plus. We are looking for someone with stron...

...firm seeking an experienced Electronics and Embedded Systems Engineer to design and program a microcontroller-based control system for an electronic control panel. The system will govern critical machine operations and must be robust, reliable, and designed for an industrial environment. Core Technical Requirements: Microcontroller (MCU): [Specify preferred MCU if you have one, e.g., PIC, STM32, Arduino/AVR, ESP32] or recommend the best fit for industrial stability. Inputs/Interrupts: The system requires 5 distinct hardware interrupts. Logic Levels: The input signals will be coming from standard industrial peripherals (limit switches, thermostats, proximity sensors, etc.) operating at 12V or 0V. The hardware design must include proper opto-isolation or level-shifting to safely i...

We are seeking an experienced engineer for an embedded systems project involving custom electronics and firmware development. The ideal candidate should have strong experience with embedded systems, Arduino, PCB design, Embedded C, and Python. Responsibilities include developing and debugging firmware, designing and reviewing PCB schematics and layouts, integrating sensors and peripheral devices, implementing communication interfaces, and troubleshooting hardware and software issues. Familiarity with protocols such as UART, SPI, I2C, and USB is highly desirable. Experience with wireless communication, power management, microcontrollers, and prototype development is a plus. We are looking for someone who can provide practical engineering solutions and contribute to the overall syst...

I already have a fully working prototype of a smart control system for my whirlpool, complete with firmware. It manages temperature regulation, drives the water-jets and handles the LED lighting. What I now need is a production-ready printed circuit board that brings all of this together cleanly and reliably. The core of the design is an MCU (currently an Arduino-class microcontroller) plus a handful of sensors. The firmware is stable, the pin-mapping is fixed, and the schematic is drawn—your task is to turn this into a compact, manufacturable PCB that I can send straight to fabrication. You will receive: • the current schematic in PDF and KiCad format • the pin-out and footprint of the chosen microcontroller • a list of the temperature and pressure sens...

Smart Fish Tank IoT Project Development (Delivery Required Within 24 Hour...reliable automation logic Expected Deliverables Complete ESP32 source code Proper sensor integration and calibration Automation logic implementation Mobile app connectivity (or integration with the specified IoT platform) Circuit diagram (if applicable) Documentation explaining the system and code Assistance with testing and troubleshooting Requirements Strong experience with ESP32, Arduino IDE Experience with IoT applications and Wi-Fi communication Knowledge of sensor interfacing and embedded systems Ability to deliver clean, well-commented code Timeline This project must be completed within 48 hours. Please apply only if you can dedicate the required time and guarantee delivery within the...

I want to build a highly minimalist, budget-friendly...Python code must be highly modular and well-documented. Because I have a GCP background, the codebase needs to be structured cleanly so I can eventually scale it, add telemetry, or offload processing to the cloud in later phases. Deliverables: A complete, budget-optimized Bill of Materials (BOM) using easily sourceable parts. Clean, well-documented Python script for the face-tracking logic. Arduino C++ code for the ESP32-CAM to handle the video stream and receive servo control commands. A brief wiring diagram and setup guide. To Apply: Please share your experience with OpenCV, Python, and basic servo control using microcontrollers. Let me know what low-cost pan-tilt assembly or components you recommend to keep the hardware...

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We operate a fly ash brick manufacturing plant. Bricks are produced by a brick machine and come out on steel plat...Return automatically to the brick machine for the next cycle. • Outdoor operation in dusty industrial conditions. • Battery-powered system preferred. • Safety sensors and obstacle avoidance. • Complete mechanical, electrical, and software design required. Please include in your proposal: Relevant AGV/robotics/automation experience. Photos/videos of similar projects. Suggested technology (PLC, ROS, Arduino, Raspberry Pi, etc.). Estimated development cost. Estimated timeline. Whether you can provide prototype and final implementation support. Preference will be given to candidates with industrial automation, robotics, AGV, AMR, PLC, and material handl...

...means frequent stops, so regenerative charging during engine use is important; when the motor is running I want the alternator (or a dedicated generator) topping up the pack efficiently without over-charging. Deliverables I must see before sign-off: 1. Block diagram and schematic for the hybrid powertrain, showing sensor placement and controller I/O. 2. Control algorithm flowchart or code (Arduino, STM32, or similar MCU) with threshold values for automatic switching. 3. Bill of materials with commercially available components easy to source in small quantities. 4. Step-by-step integration notes so a competent mechanic/electrician can replicate the build. Provide the package in PDF plus original editable files (CAD, Eagle/KiCad, or code) so I can iterate later....

...dashboard application for Raspberry Pi. The dashboard will be connected to an Arduino Mega Pro controller that acquires approx. 33 sensor data and ECU signals in real time. This is not a web application. The dashboard must be developed using Qt6/QML and optimized for embedded Linux environments running on Raspberry Pi Zero 2 W and newer Raspberry Pi platforms. The final system will be connected directly to an HDMI display and must boot automatically into the dashboard without requiring any user interaction. --- Mandatory Technical Requirements Software Stack: * Qt6 * QML * C/C++ * Raspberry Pi OS (Linux) * GPU-accelerated rendering using EGLFS * Hardware-accelerated animations * Serial communication via UART (between Arduino Mega and Rpi Zero 2W) The application must...

...available) to a cloud service via MQTT or HTTPS, the cloud stores and forwards those messages, and the mobile app subscribes to that stream, shows status/history, fires push notifications, and allows a command channel for remote control. The primary outcome is the complete firmware–cloud–app pipeline with source code and clear documentation. Key deliverables • Robust ESP32 firmware (ESP-IDF or Arduino) handling sensor debouncing, power management, GSM reconnection, and encrypted transport • Cloud backend (your recommended stack) that ingests data, stores it, triggers notifications, and exposes secure APIs • Cross-platform mobile app for iOS & Android showing live sensor data, history, push alerts, and basic control buttons • Build script...

I'm looking for an experienced developer to code an Arduino circuit board for motor control. The project involves controlling servo motors. Key Requirements: - Code for Arduino to control servo motors - Ensure precise and responsive motor control - Optimize for reliability and performance Ideal Skills and Experience: - Proficiency in Arduino programming - Experience with servo motors and motor control - Strong problem-solving skills - Ability to write clean, well-documented code Please provide examples of similar work done.

...means frequent stops, so regenerative charging during engine use is important; when the motor is running I want the alternator (or a dedicated generator) topping up the pack efficiently without over-charging. Deliverables I must see before sign-off: 1. Block diagram and schematic for the hybrid powertrain, showing sensor placement and controller I/O. 2. Control algorithm flowchart or code (Arduino, STM32, or similar MCU) with threshold values for automatic switching. 3. Bill of materials with commercially available components easy to source in small quantities. 4. Step-by-step integration notes so a competent mechanic/electrician can replicate the build. Provide the package in PDF plus original editable files (CAD, Eagle/KiCad, or code) so I can iterate later....

...than a full-blown industrial line. Here’s what I’m counting on you to handle from concept to commissioning: • Process design sized for ≤ 100 kg/day of mixed biomass • Detailed mechanical drawings, P&ID, and a complete bill of materials • Fabrication or clear fabrication instructions for reactor, condenser train, and ancillary equipment • Integrated heating and basic control scheme (PLC or Arduino-based is fine as long as temperature is held reliably) • Factory acceptance test showing steady production of bio-oil, plus a short run-up guide I can follow on site Key points you should factor in: fast or slow pyrolysis is acceptable as long as bio-oil yield is maximized; char and syngas can be considered by-products but don&rsqu...

...2-channel, low-level-trigger 5 V relay through a Telegram bot. The basic sketch is functional, but I want it tightened up, documented, and extended so the bot can reliably: • start or stop the motor • report current motor status on request No alert system is needed at this stage, though the structure should stay flexible enough to add one later. Your job is three-fold. First, review my existing Arduino (C++) code, eliminate redundant logic, improve readability, and make sure the asynchronous Telegram calls never block the Wi-Fi loop. Second, produce a clear wiring guide that shows exactly how the ESP32’s 3.3 V GPIO is shifted through the logic-level converter before it reaches the relay module. I would like this in two formats—an annotated schematic (...

...Germany-based, husband-and-wife-led engineering studio with a 5–7 member core team specializing in full-cycle IoT and embedded product help startups, researchers, and companies turn ideas into fully working, production-ready IoT products, from PCB and firmware to cloud, AI, and mobile Core Expertise Covers the Entire IoT Chain-> Embedded Firmware DevelopmentSTM32, ESP32, Arduino, nRF, PIC, Raspberry PiBare-metal & RTOS (FreeRTOS)BLE, Wi-Fi, LoRa, MQTT, CAN, SPI, I²C, UARTSensor integration, power optimization, OTA updates-> PCB Design & Hardware EngineeringSchematic + PCB design (EasyEDA, Altium, KiCad)Single-layer to multilayer boardsBOM optimization & DFM/DFA supportPrototype-ready Gerbers & manufacturing files-> Cloud, Backend & AI Int...