Arduino jobs

VERY IMPORTANT, I HAVE CREATED MY CODE USING AI, I dont know why it doesnt work when I flash it on the pico; I have created an i2c canner in Arduino IDE and everything worked (so the main and only concern is that the code written by AI in Rust has some issue that the compiler itself doesnt detect); The code is fully written, I need help adjusting it to make it work I'm seeking an experienced developer to create code in Rust for a spider robot. Requirements: - Hardware: Pico W, MPU6050, OLED96 (SSD1306), PCA9685, and 12 MG90S servos. - Control: Wifi-based, via a mobile app (potentially Flutter). - Movements: Walking, turning, and performing emotes like waving and dancing. Ideal Skills: - Proficiency in Rust and embedded systems. - Experience with servo control and WiFi commu...

Currently i have a pcb, which makes use of an arduino and a meshtastic radio module, The board is supposed to be setup such that it is compatible with (switched via dip switch) lipo, li-on, and lifepo4 batteries. it is also compatible with usb charging as well as solar mttp charging with dip switch set voltages. it also has a port for a switchable power in/out jumper port. (the board can supply power to a second board, or via a dip switch can share its power with a second board.). the and since the board is capable of taking power from the batt ports on the arduino, it can both charge the batteries from usb, but also read the battery voltage via the meshtastic firmware for remote battery monitoring. Currently, the meshtastic radio node connects to the arduino and funct...

...Tilt/inclinometer sensor — reads the cannon barrel elevation angle - All sensors wired to an Arduino or directly to Raspberry Pi GPIO - Sensor data delivered to the browser app in a defined format You will also integrate two physical outputs triggered by software events: - Compressed air thumper — fires when the vehicle shoots or is hit, shaking the vehicle and making a loud noise - Door open sensor — triggers a safety interlock that disables vehicle movement 3. Responsibilities - Select appropriate sensor modules for GPS, compass, and barrel elevation - Wire all sensors so they can be mounted in separate physical locations on the vehicle (up to 1 metre of cable from the central board) - Write Arduino or RPi firmware to read all sensors and output clea...

...Test access: ~18 ENIG-finished pogo-pin test pads on the bottom side Mechanical constraints: Board outline is fixed (44 × 21.5 mm), provided as STEP file Two slots in the middle for housing fit (keep-out zones) All connectors side-mount on top side 2 mm border keep-out on the bottom side (housing contact surface) Components on both sides allowed; bottom-side parts < 2 mm tall Base reference: Arduino Nano ESP32 (ABX00083, CC BY-SA 4.0). The reference handles the USB/ESD/NORA/flash/regulator/reset section; the motor driver, aux power, second Hall, and test points are additions I've fully spec'd. Deliverables: Full KiCad 8/9 project with project-relative libraries, schematic + layout PDFs, JLCPCB-ready manufacturing files (Gerbers, BOM with LCSC C-numbers, CPL)...

I need an FPGA developer to complete an existing SPI slave system on an iCE40 4k HX. The RTL is mostly written and passes individual testbenches. The work is inte...(Hamming/Hsiao for 16/24/32-bit words) and CRCn (11/18/26-bit) 4. Write an integration testbench covering the full path (SPI → BRAM → PWM) 5. Synthesize for iCE40 4k HX (Lattice tools or Yosys/nextpnr), ≥100 MHz SPI and PWM clocks, CDC between clock domains 6. Arduino Due test sketch for hardware verification (fuzzing test) **Requirements:** - Verilog, iCE40 toolchain experience - Understanding of SPI, BRAM, clock domain crossing - English communication **Deliverables:** Working RTL, bitstream, testbenches, change documentation, Arduino test sketch. **Budget:** Please quote. ZIP Password will be s...

...written in C++. The main issue I am encountering is compilation errors. I am looking for someone proficient in Arduino IDE, ESP32 programming to help resolve these issues and ensure the code compiles successfully. A link to the project and code.... I already have the hardware, but my coding experience is zero. I am computer literate and have been trying for over 2 weeks to get the code to compile successfully in Arduino IDE, but I keep getting errors. I have reached out to the original coder and the Arduino community via chats and forums to no avail. I understand the basics of Arduino IDE, but I am lost in the code, doesn't help being dyslexic either. I have completed a few, simpler ESP32 projects

I'm looking to enhance a simple voltage testing device with a microcontroller and coding for data capture. The upgraded device should capture: - Voltage levels - Pass/fail results - Circuit position/number Ideal skills and experience: - Microcontroller programming (e.g., Arduino, Raspberry Pi) - Experience with voltage measurement and data logging - Familiarity with coding for embedded systems - Strong problem-solving skills

...image polling. 3. Audio Listener: Set up a standard UDP or WebSocket socket on a dedicated port to receive 16-bit mono PCM audio and stream it over the I2S interface. 4. Peripherals: Read battery voltage via a single Analog ADC pin and expose it on an HTTP endpoint (e.g., /battery). Drive a single GPIO pin HIGH on system boot for an indicator LED. Requirements: - Clean, well-commented code in Arduino IDE or ESP-IDF. - Must have an ESP32-CAM and basic I2S hardware on your desk right now to verify the code works before delivery. Fixed Budget: $200 USD Max Timeline: 5 to 7 Days...

1. ABSTRACT This project presents an RFID-based door locking system using Arduino Uno to provide secure and contactless access control. The system uses RFID tags/cards to authenticate users and controls a servo motor to lock or unlock the door. An LCD display provides real-time status updates, and a buzzer gives audio feedback for access granted or denied. This system demonstrates the integration of embedded systems, IoT concepts, and automation for security applications. 2. OBJECTIVE To design a secure, keyless door locking system using RFID technology To integrate multiple electronic components such as RFID reader, servo motor, LCD, and buzzer with Arduino To validate authorized users using stored RFID UID data To provide real-time feedback using LCD and buzzer To develo...

...Printed Housing Use: • PLA for ultra-cheap testing • PETG for better durability • ABS if higher heat resistance needed PETG or ABS are much better for automotive testing because PLA can deform in heat. 2. Off-the-Shelf Radar Module Instead of designing custom radar hardware: • buy existing development modules • mount inside enclosure Cheapest Path Use: • 24GHz radar dev kit • Arduino/ESP32 controller • 3. LED Alert System • Simple high-brightness LEDs. 4. Battery System Use: • off-the-shelf USB battery bank initially Do NOT custom-build batteries yet. 5. Mounting System Cheapest approach: • 3D printed clamp • rubber pads • stainless screws Do NOT engineer fancy quick-release syst...

I need an Arduino-based CCTV solution that will keep watch over my car for security monitoring. The unit has to be fixed on the vehicle itself, so everything—from the enclosure to the optics and the board—must handle both rain and extreme temperatures without fail. Here’s what I’m after: • A complete parts list with off-the-shelf components (Arduino model, camera module, storage, power regulation, waterproof housing, weather-rated connectors). • Wiring diagram and enclosure layout showing exactly how the system fits inside or on the car. • Well-commented Arduino sketch that records video continuously (or on motion, if resource-friendly) and saves it locally. • Clear guidance on powering the unit from the car battery ...

...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...

...coordinate temperature, drum speed and timing so every batch is consistent. My ideal control stack includes a dedicated profile screen on the roaster itself and remote connectivity—USB for firmware flashing or data export, plus Bluetooth and Wi-Fi so I can monitor or tweak profiles from a laptop or phone in real time. Whether you prefer PLCs, an industrial PC, or a micro-controller/ SBC solution (Arduino, STM32, Raspberry Pi, etc.), I’m open as long as accuracy, safety interlocks and reliability are assured. Key deliverables: • Control architecture and wiring diagrams • Firmware / software that executes full profile roasting, logs data and exposes it over USB, Bluetooth and Wi-Fi • Touch-friendly UI layout for the on-board screen • Bill of ...

ASAP FINISH IN 10-15 HOURS MAXIMUM Need STL files, any 3d programs are fine. I need to do 3d print by tmr morning. Hi, I’m looking for someone who can help me create a 3D model for my project. My project is a lamp combining a house/tower form with shadow-puppet style lighting. It will use Arduino and LEDs inside, so the 3D model needs to consider both the outer appearance and the internal space for electronics. The deadline is quite tight, so I want someone who can complete it within 10–15 hours maxium. I cant work with u unfortunately if you can't finish in 10-15hrs maximum. I’m happy to pay extra if u can finish asap. Will explain more when we message

Update the motor power board and arduino shield to new connector types, shrink arduino shield a little bit, add embossed labels to all connectors.

I need a PCB design for an Arduino car interface. The interface will connect to various sensors, primarily temperature sensors, and will manage indicator lights. Key requirements include: - Connection for temperature sensors and car indicator lights - Functionality to monitor car temperature, control indicator lights, and provide an alert system for overheating Ideal skills and experience: - Proficiency in PCB design - Experience with Arduino integrations - Knowledge of sensor interfacing and automotive systems

I need a working miniature that shows exactly how rainwater can be captured, filtered, stored and then pumpe...the finished model, please give me concise build notes and a simple wiring or plumbing diagram so I can explain the setup and replicate any troubleshooting steps during the presentation. A short video walkthrough of the prototype running would be appreciated for teacher review, though a live demonstration option works too if you’re local. If you have prior experience with STEM teaching aids, Arduino-driven pumps, or small-scale environmental prototypes, let me know—those skills will definitely help. I’m aiming for a sturdy, portable build that can survive a few classroom transports without leaks or loose parts, so durability and neat assembly are importan...

...setup instructions. Acceptance criteria 1. The assembled unit performs the core interaction loop defined in my notes without manual intervention. 2. Demonstration video and real-time logs confirm stable operation for a minimum of 5 minutes. 3. All project files (schematics, code, BOM) are delivered in editable formats. Iterative check-ins are welcome; rapid prototyping tools such as Arduino, Raspberry Pi, or similar dev boards are perfectly fine for this stage. I value clarity and documented decisions so the prototype can evolve into a production design later....

I am developing a wall/desk-mounted NFC clock in / out system. I already have a working prototype and firmware completed using Arduino IDE on ESP32. I now want a professionally designed integrated PCB and simple 3D printable enclosure suitable for low-cost manufacturing through JLCPCB PCBA. Main requirements: Integrated ESP32 module (ESP32-WROOM preferred) USB-C for power + programming WiFi required MFRC522 RFID/NFC support over SPI 16x2 I2C LCD support 4 navigation buttons 2 status LEDs Active buzzer Fully integrated PCB (no ESP32 dev board or jumper wires) JLCPCB/JLCPCB PCBA compatible Reliable design suitable for production Important: I already have working firmware completed GPIO compatibility with existing firmware is preferred Cost optimisation is very important Open to pr...

I only accept the price in the bud so don't come asking my budget in inbox or increasing again I'll cancel you immediately. I need a fully-commented Arduino Nano v3 sketch that handles auto-scanning on the mm238rw 5.8 GHz 8-channel video receiver module (datasheet linked above). At power-up the Nano should cycle through all eight channels until a valid video signal is found, then lock on that channel and stop scanning. A compact LED screen mounted on the front panel must show a clear “searching” indication while sweeping and switch to “signal found” (with current channel number) once video is detected. Pressing a panel button should immediately restart the scan so I can keep looking for new FPV drone feeds. Because the Nano’s only task is ...

Freelance Embedded Firmware Engineer – MSP430 Expert Required We are seeking a highly experienced embedded firmware engineer with strong expertise in the Texas Instruments MSP430 microcontroller platform for a professional product development project. This role is strictly for engineers with proven hands-on MSP430 experience. Please do not apply if your experience is only with Arduino, ESP32, STM32 basics, or hobby-level embedded development. Project Scope: 1. The selected freelancer will work on firmware development, debugging, optimization, and hardware interfacing for an MSP430-based embedded system. 2. The hardware setup has to be accessed remotely. Applicants must be comfortable working in a remote embedded development workflow. Experience with: 1. Bare-metal firmware...

I would like a clock, run by a Stepper motor, to rotate once per hour. The motor must be strong enough to rotate a chain that weighs about 1kg, something like a nema 17. It can be controlled by Arduino or whatever means necessary. The device must only have one power source 5v or 12v dc or 240v ac. The device must fit within a 120mm (diameter) x 30mm (height) cylinder and the motor shaft must be centred in that device. It can have more height but diameter is not negotiable. The device must be posted to me in Brisbane, Australia. I will attach it in the cylinder. it would be nice for the device to be mounted to a backing board. The device will be wall mounted like a clock and powered continuously.

...Keyestudio KS4070 4-wheel Bluetooth car that my daughter assembled, but the current sketch isn’t doing what it should. With its line-tracking module, ultrasonic range sensor, and infrared receiver all wired in and verified, the car still refuses to: • stay on the black line, • swerve around any obstacle in its path, and • pause precisely at programmed checkpoints. I need a clean, well-commented Arduino sketch delivered today that makes those three behaviours rock-solid. Please structure the code into clear functions for line detection, obstacle avoidance, and stop-point handling so future tweaks are easy. Serial-print debug messages are welcome but keep them toggle-able with a macro or flag. Acceptance criteria • Upload sketch, I flash it once...

...optical proximity sensor to count motor shaft rotations - Debounce logic required - Sensor signal conditioning circuit to be included Rotation Control: - User-configurable target rotation count (via DIP switches, potentiometer, or microcontroller interface) - Automatic motor stop upon reaching the target count Controller: - Microcontroller-based (MCU choice open to bidder's recommendation — Arduino, STM32, PIC, etc.) - Firmware to handle closed-loop rotation counting, motor control, and stop logic OPERATING PARAMETERS - Supply: 24V DC - Motor current: up to 10A (continuous) - PWM frequency: 10–20 kHz - Rotation range: 1–9999 counts - Sensor type: NPN/PNP inductive or optical DELIVERABLES 1. Schematic diagram (EasyEDA, KiCad, or Altium — clearly do...

...The engineer will be responsible for both the hardware circuit design and the Arduino firmware, from prototype to a working demo unit. Core deliverables Working hardware prototype using Arduino (Uno/Mega/Nano) with CT sensor or ACS712 current sensor and ZMPT101B voltage sensor Firmware that measures voltage (V), current (A), real power (W), and energy consumed (kWh) at defined intervals Wireless data transmission via ESP8266 / ESP32 WiFi module to a REST API endpoint (JSON payload over HTTPS) Full schematic / circuit diagram and commented source code (C/C++ Arduino IDE) submitted with the build Brief technical documentation covering calibration steps, known limitations, and expansion notes Skills required Arduino (C/C++) Electrical circuit design ESP8266 / ...

Looking to design prototype simple thermostat with separately mountable LCD display. Two thermistor temp inputs. One 220V 10a relay output. Its to run a water chiller, set point is fixed at 6C. So one of the temp input measures wate...temp inside the unit. The LCD should display the two temperatures and the relay status, eg 10 28 1 Could mean water temp is 10C , air temp is 28C and the relay is ON. No temp adjustments are needed. We will pay for hardware and costs to ship to us. You design and build, so quote for your time only. Ideally LCD is on a ribbon so it can be panel mounted. Any platform is acceptable, arduino, raspberry or bespoke. Whatever is is cheapest overall. Board can be power by external transformer, you don't need a power supply building ...

...project involves developing and assembling an electronic target system using ESP32/Arduino hardware, acoustic sensors, and desktop/mobile software integration. The system should accurately detect pellet impact positions and display real-time scores and shot analysis. Responsibilities Develop and customize the electronic target system Work with ESP32/Arduino microcontrollers Integrate microphone/acoustic sensors Configure and modify open-source freETarget software Design hardware wiring and sensor connections Perform calibration and accuracy testing Create a user-friendly interface/dashboard Troubleshoot hardware and software issues Assist in prototype development and deployment Required Skills Experience with Arduino or ESP32 development Knowledge of embedded syste...

...pump + nozzle) • Spreads it in a circle (motorized arm, same motion as a manual T-spreader) • Waits for cooking (IR sensor + timer) • Squeezes chocolate spread onto the crepe (3 small heated pumps) • Folds it in half, then into a triangle (simple hinged flaps, not robotic arms) • Slides it into a paper cone sleeve It's a straightforward build — aluminum 2020 frame, 3D-printed brackets (ABS), Arduino Mega, stepper motors, servos, and peristaltic pumps. All off-the-shelf components from AliExpress. No custom PCBs, no CNC machining, no exotic materials. The griddle is a Krampouz electric double crepe maker (2 × 400mm plates). The machine sits above it as a bolt-on add-on. I need: ✓ Full build — design, print, assemble, wire, program...

...contact that feeds a speaker. All I need from you is a clean, well-commented Arduino sketch that monitors the PIR motion detector installed outside, debounces or filters stray signals, and then closes a contact long enough to activate the speaker line. After a configurable delay the output should reset so the system is ready for the next detection. Please write the code so pin numbers, delay length, and trigger duration can be adjusted at the top of the sketch. No fancy libraries are required—simple Arduino IDE–compatible code works best. A quick wiring diagram or pin-mapping note is welcome so I can hook the PIR sensor and the relay or transistor that drives the speaker feed correctly. Deliverables • Arduino .ino file with clear inline comments...

...early-stage circuit design to basic firmware tweaks, refining the lock’s functionality, helping validate the hardware on the bench, and documenting each step so the work can be replicated later. You do not need years of background—just a solid grasp of electronics fundamentals, the curiosity to learn fast, and the confidence to ask questions. Familiarity with simple microcontrollers, C/C++ or Arduino-style tooling, and any PCB design package will make the ramp-up smoother, but I’m happy to mentor you through unfamiliar areas. Deliverables I expect as we progress: • Updated schematics for each design revision • Clean, well-commented firmware source files with version control commits • A short test report summarising bench results for every ...

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 ...

...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 Gerber files • Fully documented Arduino/C++ firmware including: – Deep-sleep logic with wake intervals adjustable over serial – MQTT routine targeting Supabase/PostgreSQL – Robust reconnection and error handling for the SIM7600G – Battery management and basic health reporting Acceptance tests will be a successful 24-hour bench run on battery, uninterrupted MQTT p...

...(distance/proximity) respond with simple movement and expressive lighting run structured behavioral states (idle, listening, calm, docking, etc.) support basic voice interaction/audio output This is still a practical prototype build project — not a high-complexity robotics or AI research system. Scope of Work Hardware Integration Set up Raspberry Pi 5 (or recommend alternative such as ESP32/Jetson/Arduino where appropriate) Integrate: 2x quiet DC gear motors motor driver battery pack proximity / ToF sensors LED ring + LED light band speaker + microphone array optional camera support Mobility & Stability (UPDATED) Implement: smooth forward/reverse movement controlled turning stable low-speed movement support for hidden front caster wheel design Important: Movement ...

...let you select parts (I will provide the models) from a menu and position them on a 2D surface (move and rotate). The parts are 3D (.step files) but they are always moving on the 2D surface. The goal is to simulate putting parts on a PCB. We then use that information to load a python script that interacts with KiCAD to create a PCB. It will also need to integrate with text editor to create an Arduino firmware that goes with the PCB. It will also need to have some features locked behind a subscription. I would like this to be based on popular stacks, so it is easy to maintain. The first step is to create the 2D/3D viewer, but I want to make sure the stack will work for all future features. This is a long-term project where many tasks and features will be added as we move forw...

...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 • Well-commented ESP32 firmware for each side, compiling in Arduino IDE • Brief range and power-consumption test results, plus any tuning tips •...

...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 purchase links • Fully commented firmware or software (Arduino, Raspberry Pi, ESP32, OpenCV, etc.) ready to compile and run • Alert interface mock-up (mobile or web) demonstrating how supervisors receive notifications • Concise test protocol confirming detection within 2 seconds and continuous operation for at least 30 minutes Acceptance criteria • Prototype or simulated demo clearly shows automatic detec...

...Unity game with Windows build, Unity project folder, assets, scripts, and walkthrough video. No. of Websites: 2 1. Showcase Portfolio Website – online professional portfolio for job application. 2. Creative Incubator Website – campaign website for the group prototype/project. No. of Physical Computing / Arduino Projects: 7 1. Arduino Experiment 1 2. Arduino Experiment 2 3. Arduino Experiment 3 4. Arduino Experiment 4 5. Arduino Experiment 5 6. Arduino Experiment 6 7. Final Operational Arduino Project No. of Reports / Written Documents: 8 1. Physical Computing Portfolio PDF. 2. Creative Incubator Individual Report – 1,500 to 3,000 words. 3. Cyber Security Forensic Investigation Report – 2,500 words. 4. Cyb...

This project involves the design ...implementation of a digital discrete-event control system for two industrial automation scenarios. The first task is a two-tank level control system, where an Arduino or PLC reads four level sensors and controls three valves to manage filling, transfer, and drainage while preventing overflow and dry running. Deliverables I expect at each milestone: • A fully functioning and tested Arduino sketch, thoroughly commented • A clear wiring diagram or schematic showing every connection • Concise build notes so I can replicate the setup on my bench I’m ready to start as soon as we agree on an initial approach and timeline. If you’ve built custom Arduino projects before and enjoy collaborating with someone wh...

This project involves the design and implementation of a digital discrete-event control system for two industrial automation scenarios. The first task is a two-tank level control system, where an Arduino or PLC reads four level sensors and controls three valves to manage filling, transfer, and drainage while preventing overflow and dry running. The second task is an electro-pneumatic sequential control system, where the controller operates two cylinders in the sequence A+ B+ A– B– and controls a conveyor motor using proximity and magnetic sensor feedback. The project includes control logic design, implementation code, simulation or testing evidence, engineering modelling of the tank dynamics, component selection, and justification of the chosen controller platform.

I need a Python/Arduino developer to create the code for an Adafruit RP2040 CAN board. The board will take in an analog voltage and output to a CAN based device. Key Requirements: - Converts 0-5V analog signals into CAN-based messages. - Convert can messages coming in and rebroadcasting to a different address - Broadcast status and wake messages to device being controlled. Ideal Skills & Experience: - Proficient in Python and/or Arduino and familiar with Adafruit Feather ecosystem - Experience with CAN protocols and message formats

I need an experienced embedded systems and PCB design engineer to design a compact NFC Reader module based on the ESP32 microcontroller and NFC transceiver. The board should read NFC tags and toggle a relay output to control external devices such as door locks, motors, or other automation equipment. Key Functional Requirements: - ESP32 as the main microc...input voltage range: 10–24V DC - Multi-rail power supply: - LED indicator header pins for visual feedback Firmware Requirements: - Read UID from NFC tags - Toggle relay on valid tag detection - Sleep mode support for low power consumption Deliverables: - Complete schematic design - PCB layout - Gerber files ready for fabrication - Bill of Materials (BOM) - Firmware source code (ESP-IDF or Arduino framework) - Design...

I need an Arduino sketch to operate four stepper motors in a reversible sequence, activated by a push button. The motors should run one after another. Limit switches will be used for safety. Requirements: - Operate four stepper motors - Start sequence with push button - Motors run one after another - Reversible sequence - Use of limit switches Ideal Skills and Experience: - Proficiency in Arduino programming - Experience with stepper motors and limit switches - Ability to create custom motor sequences

I’ve wired a sensor to an M5Stack unit and now need a clean, reliable firmware package that brings everything together. The core goals are: - To develop a firmware for M5Stack unit - To design User Interface - To build android and iOS apps for communication to M5Stack You’re free to use Arduino IDE, PlatformIO or UIFlow; whichever lets you move fastest while keeping the code readable and easy for me to tweak later. The delivered repository should contain: 1. Well-commented source code 2. A brief README explaining pin assignments, library versions, and how to flash the firmware 3. UI assets (icons, fonts) if any are custom If you’ve already built similar M5Stack dashboards or sensor gateways, let me see a quick clip or screenshot—that will speed up hir...

...(Custom Design) Project Description: I am looking for an experienced Electronics/Hardware Engineer to develop a functional prototype of a custom GSM-based smart lock designed for farmhouse and agricultural security. Unlike standard "plug-and-play" kits, this is a custom-built system designed for high durability and specialized mechanical features. Key Technical Requirements: Microcontroller: Arduino Nano or ESP32 preferred for the initial prototype. GSM Module: Must use SIM800L or a 4G-compatible module (e.g., SIM7600) for remote operation via SMS and Call. Actuation: High-torque 12V DC motor control (Actuator or High-Torque Metal Gear Servo). Custom "Wiggle/Multi-Fire" Logic: The system must be programmed to attempt the locking/unlocking action multiple...

...Firebase in real-time for motor ON/OFF command * Control relay accordingly * Update motor status back to Firebase 4. Stability: * Handle WiFi connection + auto-reconnect * System should run continuously without crashes Control Model: * Manual control via Flutter app (button-based ON/OFF) * Need suggestions for future automatic threshold logic Deliverables: • Clean and well-commented ESP32 code (Arduino IDE preferred) • Firebase database structure (simple & efficient) • Security rules (basic setup) • Wiring diagram • Setup instructions • Video demo showing full working system Goal: Real-time working system: App ↔ Firebase ↔ ESP32 ↔ Motor Location: Jaipur (preferred local support, but remote is also acceptable) Please share: ...

I want a doorbell that greets visitors in my own words rather tha...things or gives cleaner audio. What I need from you • A working prototype that plays a clear, custom voice recording on each press • An easy method for me to re-record or swap messages (onboard mic, micro-SD, or any straightforward approach you prefer) • Schematics, parts list, and simple installation notes so I can reproduce or service the unit later If you already have experience with Arduino, ESP32, or dedicated voice ICs, feel free to choose the platform you trust most; reliability and audio clarity matter more to me than brand names. Let me know how you plan to tackle the power, amplification, and storage, and roughly how long you’ll need to deliver a tested unit ready to bolt o...

...switch with a rotary potentiometer and feeds a clean PWM signal into an Arduino-based drive system for an axial flux motor traction inverter. When the side button is depressed, the rotary pot should dictate motor speed; the instant the button is released the output must drop to the same state as an e-stop, guaranteeing zero drive. The housing has to be fully 3D printable on a typical FDM printer (200 × 200 × 200 mm envelope, PLA or PET-G). Ergonomics matter—I’m picturing something that can be gripped like a bicycle throttle with the thumb naturally resting on the kill switch—but feel free to propose alternatives if they remain compact and printable without supports in awkward internal cavities. I’m an advanced Arduino user, so focus ...

I’m building a small interactive sound board driven by an Arduino and the MPR121 capacitive-touch controller. Between five and eight copper-tape pads will act as the touch points; the moment any pad is tapped it should fire a single, corresponding MP3 track through a DFPlayer Mini, then stop—no looping, no timed fades. Here’s the workflow I need solved: • Code that links each of the MPR121’s channels to its own MP3 file and plays the file once per touch, with simple debouncing so accidental retriggers are avoided. • Reliable wiring that ties the Arduino, MPR121, DFPlayer Mini, a small Class-D amplifier and speaker together, plus a spare GPIO line that can mute the speaker and divert audio to a 3.5 mm headphone jack when a plug is detected...

Hi Freelancers! So i have an assignment i need to make for my school in IoT regarding Arduino Mega 2560. Its about the following: Design and implement a data logger for hive monitoring that can measure the temperature and humidity inside the hive and outside the hive. In addition, there must be a sensor that can measure how much sunlight the hive is exposed to (sunlight intensity). The system must measure how external weather conditions (temperature, humidity and sunlight intensity) affect the bee colony's development. Create a system with 2 x temperature and humidity sensors (1 outside and 1 inside) and 1 sensor that can measure how much sunlight the hive is exposed to (outside), which saves data on an SD card every 10 minutes. It must mark the times (date and time) each tim...

Arduino firmware and PCB design