Arduino Jobs

The concept is already mapped out on paper; now it needs to become a functional mixed prototype that blends physical components with companion software. I will share diagrams and use-case notes that spell out the user journey, required interactions, and performance targets. Hardware scope – Translate my schematics into a breadboard or printed-circuit proof-of-concept. – Select and integrate the most appropriate sensors, microcontrollers, and actuators (open to your recommendations on exact parts). – Provide wiring diagrams and a concise bill of materials so the build can be reproduced. Software scope – Create the firmware or embedded code needed to run the hardware. – Build a lightweight application layer—this may cover data processing, a...

Our processing line needs a reliable counting routine, written in CODESYS, that records the exact number of chickens immediately after slaughtering. At the moment that figure is taken manually and is rarely accurate; I want the PLC to take over so the plant can trace throughput in real-time and feed the data to our existing SCADA screen. The job is focused on one task only: IFM based system to count poultry legs and report daily a total amount of processed birds entering the system. * Sensor to be mounted within the main running line of the Auto cut line positioned post hang on (left of the green personal) * 2 counts to equal 1 bird count * IP rating to be 68 or above for hygiene washdown areas * System to be able to be reset every day via a button that operators can reset * Wiring to be ...

Our product runs on a custom embedded system and it now needs a dedicated firmware module that can handle all UART-based communication. I already have the hardware schematic and register map; what is missing is production-ready code that initializes the peripherals, manages interrupts, frames the data, and exposes a clean API the application layer can call. Here is what I need from you: • Develop clean, well-documented firmware in C or C++ that brings up the MCU, configures the UART peripheral, and implements reliable transmit/receive routines (including error handling and buffering). • Follow our existing coding conventions and keep the footprint small so power consumption stays within spec; DMA or low-power sleep modes are welcome where appropriate. • Provide a conci...

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 professio...

I need a self-contained Python pipeline that runs on a Raspberry Pi, grabs an image from the Pi Camera, extracts any text it finds in the picture, sends that text to a lightweight AI function, then shows the AI’s short answer on a small SPI/I²C OLED display. Scope of work • Capture: Trigger the Pi Camera (libcamera or picamera2) and save a frame. • OCR: Use Tesseract, EasyOCR, or another open-source library to read text from the image. The input is always “text from images,” never scanned PDFs or live handwriting. • AI logic: Pass the recognised string to a simple question-answer routine (OpenAI API, Llama .cpp, or any efficient model you prefer) and return a concise, single-sentence reply. No lengthy explanations are needed. • Display: P...

I’m working with a 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, ...

We are looking for an experienced electronics/embedded systems engineer to design, simulate, and build a working prototype of a Permanent Magnet DC (PMDC) motor driver circuit. The driver must allow precise control over the number of motor rotations using real-time feedback from a proximity sensor. This is a two-phase project: (1) schematic and PCB design, and (2) hardware prototype build and validation. Both phases are in scope. TECHNICAL REQUIREMENTS Motor Driver: - H-bridge or equivalent topology to drive a PMDC motor - Bidirectional rotation support - PWM-based speed control - Adjustable current limiting - Protection against over-current and back-EMF Proximity Sensor Feedback: - Interface with an inductive or optical proximity sensor to count motor shaft rotations - Debounce logic ...

I’m adding a green LED to my vending machine controller and need clear, no-nonsense guidance to finish the job. The LED will sit on pin 15, running at the standard 3.3 V GPIO level, and must glow steadily whenever my existing “vending _enabled” Boolean is true, switching off the instant the flag is false. I already know the resistor value, so no calculations are required there. What I need from you: • A simple wiring diagram showing pin 15, the series resistor, LED orientation, and ground return. • Confirmation that the selected pin can source the required current and, if not, the minimal code tweak or wiring change needed. • A clean, drop-in Python snippet written for either or gpiozero (your choice, just keep it concise) that exposes a function lik...

Project overview We are building a smart IoT electricity monitoring device for a Kenyan prepaid energy management platform. The device must read real-time electrical parameters — including current, voltage, and power consumption — and transmit that data wirelessly to a cloud API. 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 sc...

Project Requirement – Electronic Shooting Target System Developer We are looking for a skilled and passionate developer/engineer to build a DIY Electronic Shooting Target System based on the open-source freETarget project. The system will be used for air pistol and air rifle practice and scoring. Project Overview The 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 Des...

Hi, I'm looking for a maker/mechatronics builder to build me a simple automation rig that sits above my existing crepe griddle. What it does: • Pumps batter onto the plate (peristaltic 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 grid...

I have an ESP32 connected to a load cell and HX711 amplifier, and I need the complete firmware-to-mobile workflow that turns it into a working weight-measurement prototype. The microcontroller must read stable, calibrated values from the load cell, push them over Wi-Fi or Bluetooth, and display them inside a companion mobile app on both iOS and Android. On the hardware side, please handle: • HX711 calibration routine with tare and unit conversion • Continuous or on-demand weight sampling (configurable) • JSON payload transmission via MQTT or HTTP (I’m flexible on protocol) • Low-power sleep strategy so the ESP32 can run on battery For the software side, I’d like a clean, cross-platform mobile app (Flutter or React Native are fine) that: • Au...

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...

I’m building a compact, battery-powered torque meter that streams live readings to a smartphone over Bluetooth Low Energy. The job covers three tightly-linked pieces: electronic hardware, embedded firmware, and a cross-platform mobile application that works on both iOS and Android. Hardware & firmware The unit will sit between the torque sensor and the user’s phone. I need a custom PCB that conditions the sensor signal (likely through a strain-gauge amplifier), handles A/D conversion, and hosts a low-power MCU with BLE 5.x. Firmware should sample torque, apply calibration constants, then broadcast the data at a steady, low-latency rate. Power efficiency and a clean-pairing workflow are essential. Mobile application On the software side, the app should discover the met...

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...

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.

Estoy desarrollando un prototipo IoT de bajo consumo para un vertedor inteligente de bebidas y busco un ingeniero embedded/freelance con experiencia práctica en Nordic Semiconductor nRF52 y Bluetooth Low Energy. El objetivo del prototipo es detectar cada servido de una botella mediante un reed switch activado por un imán colocado en la tapita abatible del vertedor. Cada vez que el reed switch se active, el microcontrolador debe enviar automáticamente un evento BLE con un ID único del vertedor hacia un dongle nRF52840 PCA10059 conectado a una computadora, que funcionará como hub/receptor. No busco una empresa grande ni una solución sobredimensionada. Busco un especialista técnico que pueda llevar el prototipo a una prueba funcional, documen...

Je suis basé à Ouarzazate et j’ai besoin d’un(e) partenaire au Maroc — idéalement dans cette ville ou à proximité — pour concevoir et réaliser deux bancs d’essai destinés à un environnement industriel. 1. Premier banc : architecture Arduino intégrant différents capteurs (température, pression, distance, etc.). Je cherche quelqu’un capable de sélectionner les capteurs appropriés et de maîtriser leurs drivers afin d’obtenir un système fiable et extensible. 2. Second banc : plateforme complémentaire à base de caméra. Objectif global : livrer deux dispositifs immédiatement opérationnels, robustes et document&e...

Estou desenvolvendo um wearable focado em alertas inteligentes de monitoramento de atividades e preciso de um especialista em eletrônica embarcada para transformar o conceito em um protótipo funcional. A plataforma base deverá girar em torno de um ESP32 (ou equivalente) alimentado por bateria recarregável, operando com baixo consumo e oferecendo conectividade Bluetooth e Wi-Fi para sincronização de dados e atualizações remotas. O hardware terá, obrigatoriamente, um sensor de contato com água; caso você considere útil adicionar acelerômetro, sensor de frequência cardíaca ou outros módulos, podemos discutir durante a fase de arquitetura. Também valorizo soluções q...

Cüzdan yönetimine odaklanan yalın ama güvenilir bir kripto uygulamasına ihtiyacım var. Uygulamada tek önceliğim, anında transfer özelliğinin sorunsuz ve hızlı çalışması. Temel kapsam • Kullanıcılar kendi kripto cüzdanlarını oluşturup yönetebilmeli. • Anında transfer: Aynı ağ içindeki adreslere saniyeler içinde gönderim ve alım. • Basit, anlaşılır bir arayüz; masaüstü ya da mobil tarayıcıda rahatça çalışmalı. • Ödeme/transfer sonuç ekranında işlem kimliği ve onay durumunu net gösteren bildirim akışı. Teknik beklentiler • Modern bir backend dili (Node.js, Python, Go vb.) ve iyi bilinen bir blok-zincir SDK’sı kullanmanı tercih ederim. &bul...

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...