Arduino Jobs

Buscamos un especialista en IoT e integraciones hardware/software para trabajar con dispositivos físicos de control de acceso conectados a nuestra plataforma web para gimnasios y clubes. Trabajamos con lectores biométricos y faciales, molinetes, cerraduras, controladoras y equipos de marcas como ZKTeco, Hikvision, Digital Persona, HID, Arduino y otros dispositivos similares. El principal desafío es integrar dispositivos que normalmente están conectados a una PC o red local del gimnasio con nuestra plataforma en la nube, resolviendo: comunicación bidireccional; recepción de eventos en tiempo real; envío de comandos a los dispositivos; sincronización de información; monitoreo del estado de los equipos; reconexiones ...

I have a simple ESP32 prototype that reads sensor data and sends it to a dashboard via MQTT. The sensor works, but the MQTT connection keeps dropping randomly and losing data. I need someone to look at the code, fix the reconnection logic, and make it stable. Budget is $25 for this quick fix. If you do a good job and are easy to work with, I have a much bigger PCB design and industrial automation project I need a team for

I’m building an IoT device that pairs an Nvidia Jetson AGX with an Arduino board. The core goal is reliable data logging: environmental sensors will feed the Arduino, and the Jetson will aggregate, time-stamp, and store the readings for later analysis. What I need from you • Set up stable serial UART gpio (or I²C/SPI if preferred) communication between the Arduino and the Jetson AGX. • Write Jetson-side code—Python is fine—to pull incoming packets, validate them, and log the data locally (CSV or SQLite). • Provide an Arduino sketch that collects sensor values and transmits them in the agreed format. • Supply a clear wiring diagram plus a short README so I can replicate the build, flash the firmware, and run the Jetson script at boot. ...

Especificación Técnica: Ahuyentador Ultrasónico e Iluminación Estroboscópica Profesional (5V)1. Arquitectura de Alimentación y Diagrama de Voltaje (Power Tree)Para garantizar la máxima seguridad y compatibilidad global, el equipo se alimentará exclusivamente a 5V DC mediante un puerto USB Tipo-C con protección industrial integrada. Protecciones Requeridas en el Diseño de la PCB:Filtro EMI/RFI: Bobina de choque común para evitar que el ruido de la alta frecuencia ultrasónica retorne a la fuente de alimentacióón contra Inversión de Polaridad y Sobretensión: Mediante a diodo TVS (Supresor de Tensión Transitoria) de 5, Fusible (PPTC): De 1.5A para proteger el puerto USB ante e...

I want to turn the idea of a small “follow me” car into a working indoor prototype I can use at home. It should quietly track and follow a person around flat floors, weave through doorways or hallways, and stop safely when I stop. Because it is for personal use on smooth indoor surfaces, size and noise matter more to me than ruggedness or high speed. Here’s what I need from you: • Select or design a compact chassis, drive train, and battery that can run at least 30 minutes on a single charge. • Recommend and integrate the sensing stack—camera, ultrasonic, LiDAR, Bluetooth beacon, or any mix you believe best balances accuracy and cost—for reliable human-following and basic obstacle avoidance indoors. • Write the control firmware / software...

Pago 90 usd entrega urgente BRIEF TÉCNICO — DISEÑO PCB ESP32 1. Objetivo Desarrollar una PCB personalizada tomando como referencia la NodeMCU ESP32 v1.1, adaptándola al módulo ESP32-WROVER-IE (LCSC C701351) y a los requerimientos indicados por el cliente. El diseño debe realizarse en KiCad, dejando todos los archivos preparados para fabricación/ensamblaje mediante JLCPCB. --- 2. Dimensiones y restricciones mecánicas - Mantener la posición y distribución de los pines principales compatibles con la referencia NodeMCU ESP32 v1.1. - La PCB puede ser más larga si es necesario, pero no debe sobresalir de la PCB principal U1 en las zonas donde exista esta restricción. - Los tornillos, fijaciones y componente...

Freelancer Required – SAW Welding Controller Development We are looking for an experienced Embedded Systems / PCB Design Engineer to develop a dedicated controller PCB for an SAW (Submerged Arc Welding) machine. The welding control logic has already been developed and tested on an Arduino development board. We now want to convert the existing prototype into a reliable, compact and industrial-grade controller PCB. Scope of Work * Review existing Arduino code and logic * Convert Arduino-based control logic to a suitable MCU platform such as STM32 * Design complete circuit schematic * Design industrial-grade PCB * 24 VDC industrial input/output * Isolated digital inputs and protected digital outputs * Analog inputs for welding voltage/current feedback * Welding voltage sensing with ...

Pago 90 usd entrega urgente BRIEF TÉCNICO — DISEÑO PCB ESP32 1. Objetivo Desarrollar una PCB personalizada tomando como referencia la NodeMCU ESP32 v1.1, adaptándola al módulo ESP32-WROVER-IE (LCSC C701351) y a los requerimientos indicados por el cliente. El diseño debe realizarse en KiCad, dejando todos los archivos preparados para fabricación/ensamblaje mediante JLCPCB. --- 2. Dimensiones y restricciones mecánicas - Mantener la posición y distribución de los pines principales compatibles con la referencia NodeMCU ESP32 v1.1. - La PCB puede ser más larga si es necesario, pero no debe sobresalir de la PCB principal U1 en las zonas donde exista esta restricción. - Los tornillos, fijaciones y componente...

Chip integrado en espinilleras de fútbol para medir distancia recorrida (hardware + app/web) Tengo una marca de espinilleras de fútbol personalizadas (AG8) y quiero desarrollar una versión "smart": integrar un chip entre la carcasa protectora y la espuma interior que permita a cada jugador ver cuántos kilómetros ha corrido durante un partido o entrenamiento. No tengo definida la solución técnica todavía — busco a alguien que me guíe desde cero y me proponga la mejor forma de hacerlo (chip + app, chip + web, con o sin batería, etc.). Contexto: Ya he explorado por mi cuenta una posible arquitectura basada en NFC con chips de "energy harvesting" (familia ST25DV) y un supercondensador, para evitar ...

I want to automate the filling of an overhead storage tank with a compact microcontroller-based solution. The unit should sense the water level in the tank, trigger the pump when the level drops below a defined threshold, and shut the pump off once the tank is full. I am using a standard overhead tank fed by a single pump from ground level. You’re free to recommend the most reliable sensing method—, or conductive—so long as it performs accurately in typical domestic water conditions and can be serviced easily if something fails. The design must include: • A microcontroller (Arduino, ESP32, or comparable) with clearly commented firmware. • A driver stage capable of switching a 1 HP single-phase pump safely. • Manual override for both pump ON and OFF. ...

I'm looking for a skilled developer to build a lighting MIDI fader console with USB integration. The console will primarily be used on Windows. Key Requirements: - User Interface: Physical knobs and faders - USB Integration: Must support Windows - Features: - Programmable buttons - Mappable controls Ideal Skills and Experience: - Experience with MIDI hardware and software - Proficiency in USB integration for Windows - Knowledge of physical interface design with knobs and faders - Ability to implement programmable and mappable controls **EXPERIENCE WITH ARTNET A PLUS FOR FUTURE PROJECTS** Please provide samples of previous work related to MIDI or hardware integration. We are an American Manufacturing Company looking to replace our lead designer. Must have Cad and Programmi...

Description I need one physical prototype assembled from a complete, tested design. This is a hands-on build — soldering, basic fabric mounting, and loading provided code — with no design work. Everything you need is written down: a parts list (~$80), a wiring diagram, a belt layout drawing, the two microcontroller programs, and a three-step verification procedure. What you'll build A wearable elastic belt carrying six small 3V coin vibration motors, each glued into a small rigid pod and Velcro-mounted so it can be repositioned. The motors are driven by a BBC micro:bit v2 through a ULN2003 driver chip, powered by a 3×AA pack, housed in a small pouch or box on the belt. A second micro:bit v2 serves as a handheld controller and talks to the belt over the micro:bit&#...

I’m building a small embedded prototype that can recognise a road accident the instant it happens, trigger a buzzer on-board and then text the vehicle’s GPS coordinates to a presaved emergency contact. An accelerometer will be the sole crash-detection sensor, so the firmware has to watch for abnormal spikes on that device, classify them reliably as a collision rather than rough driving, and fire the alert routine. Here is the workflow I have in mind: the microcontroller samples the accelerometer, confirms the threshold breach, sounds the buzzer for nearby help, fetches latitude and longitude from an attached GPS module and immediately sends an SMS through a GSM or LTE-M modem. If the cellular network is down, the code should queue and retry until a signal is regained. What I ...

I need a compact laser-based perimeter protection system for a commercial site that immediately calls a predefined phone number whenever the beam is interrupted. The solution must combine reliable laser detection hardware with a GSM module (SIM800, SIM900 or similar) and the embedded code to place that outbound call within seconds of a breach. The finished unit should be self-contained, run from standard low-voltage DC, and include clear wiring diagrams and firmware source so I can duplicate or service it later. If you can integrate basic tamper detection, weather-proof housings, or an optional battery backup, mention that in your proposal—those extras would be a plus but are not mandatory. To accept the work I will power up the prototype on-site, break the beam and confirm that my...

I’m preparing for my final-year capstone in Electrical Engineering Technology and need a fresh, innovative project concept taken all the way from idea to proof-of-concept. The exact specialty is flexible—power systems, telecommunications, automation and control, or any emerging crossover—as long as the topic feels genuinely new and technically sound. I’m equally open to renewable-energy twists, smart-grid perspectives or IoT-driven approaches if they help the work stand out. What I need from you is twofold: 1. A fully referenced research paper (IEEE style) that explains the problem, surveys current literature, details design calculations or simulations, and justifies the novelty of the solution. 2. A working prototype or scaled model that physically demonstrates...

I'm seeking an experienced developer to create the FaultLine Meter-Link, a compact industrial electrical measurement accessory. The device will act as a BLE measurement bridge between an existing multimeter and its standard 4 mm safety banana test leads. Key Requirements: - Handle real-time monitoring of voltage, current, and resistance. - Development of a companion app for iOS, Android, or Windows (platform to be confirmed). Ideal Skills and Experience: - Expertise in BLE technology and industrial measurement tools. - Proficiency in cross-platform app development. - Strong background in real-time data processing and display. Prior experience with industrial measurement devices and real-time monitoring applications is highly desirable. Please provide a portfolio showcasing relevant...

I'm seeking an experienced IoT developer who can create a hardware device with a digital display. The device should operate offline, providing straight output based on programmed inputs. Key Requirements: - Hardware: - Digital display output - Programmed to do calculation. - App: - Display input data and calculations from the hardware - User-friendly interface Ideal Skills: - Experience in IoT hardware development - Proficiency in app development - Strong programming skills - Ability to create offline operating systems Please provide examples of previous work and a brief outline of your approach.

I need a concise Arduino Uno sketch that drives my Nema 34 stepper through its existing driver in a continuous loop with the following timing: • From home, turn 60° clockwise and hold that position for one second. • Return to the home position and pause one second. • Turn 60° anticlockwise, pause one second, then repeat the entire sequence indefinitely. Please base the calculations on a typical 200-step Nema 34 (1.8° per step) unless I can later change a constant for different micro-stepping settings. No sensors or limit switches are required; it is pure open-loop control. Alongside the .ino file, include a clear wiring diagram that shows the connections between the Arduino Uno, my stepper driver, power supply, and any needed resistors or opto-isolators so...

i need a .vex file produced for a transmitter we sell to iBwave software users

Description: I need a mobile app developer to build a simple prototype app for a clip on spectrometer device that detects fake drugs and food. The device connects to a phone via Bluetooth and sends 18 channels of spectral data. The phone camera captures a Raman spectrum image. The app compares the data to an offline database and shows a simple Green (genuine) or Red (fake) result. What the app needs to do: Connect to an ESP32‑S3 device via Bluetooth Low Energy (BLE) Send a "START_SCAN" command to the device Receive 18 numbers (NIR spectral data) from the device Open the phone camera to capture a Raman spectrum image Compare both data sets to a local offline database Display a result: Green (genuine) or Red (fake) Save scan history locally Requirements: Experience with...

I already built the user interface in SquareLine Studio for an Elecrow 7" CrowPanel (ESP32-S3). The layout consists of four full-screen background images with four transparent touch buttons placed on top. Pressing a button should simply toggle a corresponding light by driving one of the three external relays wired to the CrowPanel’s GPIOs; touching it again turns the same light back off. What I still need is the firmware that ties everything together: • Import the SquareLine-generated LVGL project, read the touch events, and link each of the four on-screen buttons to its relay output. • Drive the relays through ESP32 GPIOs with proper debouncing and visual feedback on the button (e.g. highlighted state while the light is ON). • Provide a clean PlatformIO o...

R7FS5D37A3A01CFP See my side hardware ready Actually my project . Collect data from plc and push into cloud server The plc have rs232 port some plc ds485 port Protocol may be modbus or some plc own . We give all format and structure Total 10 type of plc See . The collected data from plc push i into 4 sec interval to 3 location Ip address At the same time 1. TCP Ip format 2 location 104 format Maximum tags 100 from plc From that 100 tags 15 tags only we push 104 format See the main key point on ur code the ec200 module always connect with network more details will be shared with potential freelancer

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.