Mqtt jobs
Project Overview I am looking for an experienced Embedded Systems / PCB Design Engineer to review, validate, and complete an ESP32-based Ethernet gateway project. The project is based on an ESP32-WROOM-32 module and LAN8720A Ethernet PHY and is intended to operate as an ESP-NOW to wired Ethernet/MQTT gateway. I will provide an existing project repository containing the current KiCad schematic, PCB layout, firmware, BOM, Gerber files, 3D models, and documentation. The goal is to have a professionally reviewed and production-ready design, with the firmware properly configured and tested. Existing Hardware The current design includes, among other components: * ESP32-WROOM-32 * LAN8720A Ethernet PHY * CH340C USB-to-UART interface * USB input * 3.3 V power regulation * Separate Et...
...uses MQTT for real-time messaging. What I need you to tackle • Profile both the mobile client and the existing Node/JavaScript backend, pinpointing functions, background tasks, or logging that slow the app down, then refactor or remove them without breaking current functionality. • Reduce round-trip time for screen loads, device data sync, and control commands to well under a second on a normal 2G connection. • Stand up a secure VPS (Ubuntu preferred), install and configure an MQTT broker such as Mosquitto or EMQX, and harden the server (SSL/TLS, firewall rules, basic monitoring). • Replace each Firebase feature we use today—authentication, realtime database, cloud functions, and push messaging—with an equivalent self-hosted or ligh...
...sensor status. - Remote image/content upload to device screens. - Ability to send content to one device or multiple devices. - Remote configuration where appropriate. - Statistics and reports. Required Skills Experience in some or all of the following: Android / Kotlin or other suitable Android technologies ESP32 / Embedded Systems Computer Vision / Face Recognition Motors & Sensors IoT / MQTT / APIs Backend Development Databases Cloud Infrastructure Web Dashboard Development Project Approach I prefer to divide the project into fixed-price milestones. The first stage should be a Prototype/MVP demonstrating the core functionality before developing the complete cloud platform. Full delivery should include the source code, ESP32 firmware, Android project...
...Tracking and Monitoring Platform. We require full access to the source code, technical documentation, and full intellectual property (IP) transfer rights so our internal team can customize, deploy, and maintain it. We are not looking to build this from scratch—we want to buy a battle-tested, functional code baseline. Core System Architecture Requirements: 1. IoT Protocols & Hardware Ingestion: MQTT, HTTP/HTTPS APIs, TCP/UDP sockets supporting standard GPS hardware and Modbus RS480/485 digital fuel level probes/ultrasonic sensors. 2. Backend: Scalable microservices or modular architecture (e.g., Node.js, Python/FastAPI, Go, or Java/Spring Boot) using PostgreSQL/TimescaleDB or InfluxDB for time-series telemetry data. 3. Frontend: Modern, responsive dashboard (e.g., Rea...
I have an MQTT backend and basic ESP32 firmware stub and need an experienced developer to complete/rewrite it into a production-ready solution. Hardware: ESP32 Dev Module, 6× 12V solenoids, 6× YF-S201 flow sensors, MFRC522, MIFARE 1K cards. Requirements Accurately dispense user-defined volumes, especially 20L per tap, based on actual flow measurement. Support all 6 taps simultaneously with non-blocking/real-time firmware. RFID card authentication and balance deduction. MQTT price lookup, transaction publishing and balance reconciliation. Automatic offline mode with encrypted local card balances and pending transactions. Automatically sync transactions when connectivity returns. Reliable handling of reboot, Wi-Fi/MQTT disconnection and power interruption. ...
...wireless sensor nodes with proximity, motion, and vibration sensing Long-range sub-GHz (LoRa / SX1262) communication with GPS-based time synchronization A cellular (LTE) gateway node that publishes to our cloud over MQTT Weatherproof (IP65) field-ready enclosures with validated power and RF performance Strong experience required with Embedded C/C++ for ESP32-S3 and nRF52840 (RAK WisBlock) in the Arduino framework LoRa radio work on the SX1262 (RadioLib or similar), including RF tuning Sensor integration over I2C/UART/GPIO (PIR, accelerometer, GPS) Cellular modems (SIM7600 / LTE) and MQTT Li-ion / LiPo + solar charging design and validation Antenna matching and VSWR validation (NanoVNA or antenna analyzer) Implementing device AES-128 encryption Clean documentation: tracea...
...final code is clean and documented. • A lightweight browser client that connects over WebSocket (or comparable real-time transport), receives the processed events, and displays them—raw JSON is fine for now, but a minimal chart or table helps confirm everything is flowing. • Clear separation between ingestion, processing, and broadcasting layers so I can swap in production sources later (Kafka, MQTT, or another broker). • Containerisation with a Dockerfile plus a concise README so I can spin the whole stack up quickly. • Unit tests covering the main processing functions and a sample script that fires 100 events per second to demonstrate end-to-end latency below 200 ms. Deliverables 1. Python server code with real-time processing pipeline. 2. S...
...calibration routines so the environmental data is trustworthy when it reaches the cloud. Deliverables 1. Complete schematic and PCB layout files (Altium, KiCad or your preferred tool). 2. A bill of materials with realistic lead times and alternate components. 3. Production-ready firmware (C/C++, MicroPython, or Rust) capable of sampling sensors, timestamping readings and pushing packets via MQTT/HTTP. 4. One assembled prototype with test report demonstrating accuracy within ±1 °C and ±3 % RH over 48 h of continuous operation. Acceptance Criteria • Pass 24-hour burn-in at 60 °C without reboot or data loss. • Stable wireless link in a metal-heavy environment at 30 m line-of-sight. optional PEO integration as well • Data payload ...
I already have a fully-working Arduino sketch that turns my CYD ESP32-2432S028R into a local MQTT server. What’s still missing is a front-end: I want those variables to be editable directly from the board’s 2.8-inch touch screen using LVGL. Here is what I need you to add or change: • Build an LVGL-based interface that opens in a Dark theme and spans multiple screens I can swipe or navigate between. • Include button inputs for quick on/off style actions and text input fields for numeric or string parameters. • When a value is changed on screen it must immediately update the corresponding variable in the sketch and publish the new value to the same MQTT topic; inbound topic updates should refresh the UI as well, so everything stays in sync. &b...
...history, idle time, speed violations, and any custom KPIs we agree on. • Alert rules (geo-fence breach, long stops, off-hour movement) delivered inside the interface and optionally by email/SMS. • A clean admin panel where I can assign user roles for our trainees and adjust tracker settings without touching code. The hardware trackers are already installed and can stream data over HTTP, TCP, or MQTT—use whichever you prefer. You’re free to choose the tech stack (Node.js, Django, Laravel, or comparable) as long as the final product is web-based, responsive, and well-documented. Acceptance criteria: 1. Live map updates within 5-second latency on a 100-unit test set. 2. Historical reports generated in under 30 seconds for any 24-hour period. 3. Source...
...lograr un cargador solar MPPT inteligente, sumando la flexibilidad de alimentar equipos de alta potencia como Starlink (que requiere 48V de alta potencia) junto a cámaras PTZ y Access Points (APs) en 12V/24V/48V con monitoreo total. Para lograr esto, conceptualmente no debés "unificar" dos códigos fuente, sino expandir el hardware de FUGU. FUGU se encargará del control solar MPPT y la telemetría (vía MQTT/InfluxDB), mientras que la etapa de Switch PoE tiene su protia interface y hay que unirlos. ________________________________________ 1. Diagrama de Procedimientos (Paso a Paso) Para llevar este proyecto a la realidad de manera ordenada, te sugiero seguir estas fases: [Fase 1: Configuración de FUGU] │ ▼ [Fas...
...yield, rejects) • Energy consumption (per machine and overall) The app must compile for both iOS and Android from a single code base—Flutter, React Native or a comparable toolkit is fine—presenting intuitive dashboards, trend charts and push-alert thresholds. A lightweight cloud back-end (Firebase, AWS, Azure or similar) will collect sensor or PLC data; please set it up, expose documented REST or MQTT endpoints, and ensure the architecture scales for later bidirectional control. Deliverables 1. Source-controlled mobile app running on iOS & Android 2. Cloud back-end with database schema and APIs 3. Deployment & hand-over documentation 4. Brief walk-through session Acceptance criteria: build installs cleanly on my devices; dashboards refresh within three...
I need to setup a VPS ready and Home Assistant. My next step is to add a rock-solid MQTT layer so I can trigger relay modules through voice commands issued from Amazon Alexa, Google Assistant, and Apple Siri. The relays must respond to simple ON/OFF requests and support dimming where hardware allows. Here’s what I need you to handle: • Recommend and install a production-grade MQTT broker on the VPS, configure secure remote access (SSL/TLS and user auth) and verify message flow with Home Assistant. • Create the necessary automations/intents inside Home Assistant so each of the three assistants recognises the devices and exposes the ON/OFF plus dimming capabilities. • Supply clean, well-commented Arduino (ESP32) code that subscribes to the chosen topi...
...supply-chain workflows. I have not selected the ERP platform yet; SAP, Oracle or Microsoft Dynamics are all on the table. Part of the assignment is to advise which option will connect most cleanly to the collar data pipeline and to my existing farm-management processes, then build the actual integration. The finished solution should: • pull the collar’s health and behaviour data automatically (API, MQTT or another method you recommend) • map and normalise those fields inside the chosen ERP so they support inventory management, data analytics and supply-chain planning dashboards • run reliably in the background with clear logging, error handling and permissions that keep future upgrades painless • include concise technical documentation and a ha...
...should be able to turn the light on/off, set brightness, schedule automatic events, and reach the page securely while away from home. Key functions • Web interface (no mobile app requirement) served directly from the ESP32 • Features enabled: Scheduling, Dimming control, Remote access over the internet/LAN • Clean, responsive HTML + CSS + JavaScript (vanilla or lightweight framework) • MQTT support or lightweight REST endpoints are welcome if it simplifies remote control, but not mandatory Deliverables 1. Well-commented ESP32 source code ready for Arduino IDE or PlatformIO 2. Front-end files (HTML, CSS, JS) compressed for onboard SPIFFS/LittleFS upload 3. Circuit diagram showing the GPIO pinout for the relay/triac and dimming hardware 4. A RE...
...several GPIOs so I can drive LEDs and switch power to an additional sensor on command. Here’s what I need from you: • An advised pin map and any level-shifting guidance for a clean, noise-free hardware hookup. • Well-structured firmware (PlatformIO or Arduino-IDE friendly) that: – Initializes the PAA5100JE and streams its measurements at a steady rate. – Publishes those readings over Wi-Fi—MQTT, HTTP, or WebSocket is fine, as long as it’s fast to implement and stable. – Exposes simple commands or a REST endpoint to toggle GPIOs for the LEDs and sensor power rail. • Clear documentation so I can reproduce the build, flash the board, and extend the code later. If you’ve already integrated the PAA5100JE with a...
...Work Develop telemetry ingestion service. Support REST/MQTT input. Create flexible device/tag mapping. Store timestamped data in PostgreSQL/TimescaleDB or suitable time-series architecture. Develop 1-minute, 5-minute, hourly and daily aggregation. Identify missing/bad data. Store data quality flags. Create APIs for retrieval of historical telemetry. Build a configurable SCADA simulator. Generate multiple days of realistic sample solar-plant data. The simulator should recreate normal solar behaviour such as: Zero generation at night Increasing generation after sunrise Midday peak Cloud-induced fluctuations Equipment alarms Communication failures Missing data Inverter derating Required Architecture Device/Simulator → Ingestion API/MQTT → Tag Mapping → Raw T...
... We require a complete cloud-based IoT solution for approximately 100 deployed devices. Each device should securely transmit its sensor data to the cloud over the GSM network. The cloud platform should store the data, provide APIs for a mobile application, and support a Grafana dashboard for real-time monitoring and historical analysis. The solution should include secure device communication (MQTT or HTTPS), cloud data storage, user authentication, device management, real-time dashboards, historical reports, alert notifications, and a mobile application for Android and iOS. The Grafana dashboard should display live and historical CO₂, temperature, and humidity values, along with device status and trends. The overall system should be scalable, secure, and capable of supporting ...
I need help giving my current Linux-based messaging stack a refresh. The plan is to deploy the latest EMQX broker, migrate my existing MQTT topics to it, and stand up an IEC server that can exchange data seamlessly with the new broker. Here is what I’m looking for: • Clean installation and hardening of EMQX on my Linux host, including TLS, user authentication, and optimised config files. • Migration or recreation of all current MQTT topics and retained messages so nothing is lost in the switch. • Configuration of a companion IEC server and a reliable bridge to EMQX so data can flow both ways in near-real time. • Basic test scripts or commands that prove publishing, subscribing, and IEC interoperability work end-to-end. • Short hand-off document...
...magnetic (Hall-effect) sensor. It will spend almost all of its life in deep-sleep on two AA batteries and wake only when a car enters, exits, or moves. On every wake-up it must stamp the event with time, append the car’s BLE ID, and shoot that packet over LoRa. • Gateway: a battery-operated LoRa gateway that forwards incoming packets to my home Wi-Fi and then to a mobile or web endpoint of my choice (MQTT, REST, or similar). The key technical goals are extreme power efficiency, reliable car-only detection, and end-to-end message delivery you can demonstrate on a bench. I will need the schematic, PCB files, firmware source, and a brief test report showing current draw in sleep and the successful round-trip of an event message. If you have prior experience with low-pow...
...ledger (utilizing cryptographic Merkle trees, append-only distributed databases, or lightweight ledger/blockchain protocols) to guarantee data auditability and permanence. Establish secure tokenization/credit generation logic or verifiable proof mechanisms driven by sensor events and threshold compliance. 3. Systems Integration & APIs Build high-throughput RESTful/gRPC APIs and telemetry workers (MQTT, WebSockets, Kafka, or NATS) for secure gateway-to-ledger communication. Create automated verification mechanisms and consensus/validation layers to audit incoming records against pre-set threshold rules. Required Qualifications: Software & Systems: 4+ years of experience in C/C++, Rust, Go, or Python with a focus on systems programming, cryptography, or distributed stor...
I’m building a small IoT device around an ESP32 and need concise, well-structured firmware that brings reliable WiFi connectivity online. The goal is straightforward: power up, join a predefined network (with fallback smart-config or captive portal for first-time setup), then expose a simple REST or MQTT interface so the rest of my stack can push and pull data. The code may be written in either the ESP-IDF or Arduino framework—whichever you’re most productive with—as long as it’s cleanly commented and easy for me to compile and flash from macOS. I will provide the SSID, credentials, and endpoint details once we start. Deliverables • Source code and project files • Brief README covering build steps, pin assignments (if any), and how to ch...
...Firmware inventory OTA firmware campaigns Rollout & rollback Signature verification Monitoring & Infrastructure Redis queues WebSocket / MQTT architecture Production monitoring Scaling & performance optimization Security audit logs Operational logs CMS & Administration Media & Advertising CMS Advanced Admin features Quality & Documentation Unit & Integration tests Complete OpenAPI/Swagger documentation Postman collection Production-ready API documentation Ideal Candidate 5+ years of backend development experience Strong experience with Node.js/NestJS (preferred) Experience with PostgreSQL, Redis, Docker Experience building multi-tenant SaaS platforms IoT/MQTT/WebSocket experience REST API architecture Authentication & authorization Productio...
...The device will be used in industrial SCADA applications to collect data from PLCs, temporarily store data during network outages, and automatically synchronize the stored data to an MQTT Broker once the connection is restored. This project is intended for long-term industrial deployment, so reliability, code quality, and maintainability are very important. ## Scope of Work Develop STM32 firmware with the following features: * Ethernet communication * Modbus TCP Client * MQTT Client (QoS 1) * Store-and-Forward mechanism (FIFO) * Local data storage on MicroSD * Automatic Ethernet reconnection * Automatic MQTT reconnection * RTC and/or NTP time synchronization * Hardware Watchdog support * Configuration file support (without recompiling firmware) * UART debug logg...
...horizontally as additional RTSP streams come online. Low-latency processing, smart use of GPU resources, and clean separation between detection and business-logic layers are crucial because the system will eventually tie into an existing alert dashboard. Deliverables • End-to-end Python (or C++) code that connects to each camera, performs the detections described above, and outputs structured JSON or MQTT topics I can consume in my backend. • Simple CLI or minimal web UI to visual-debug results from any selected camera feed. • Setup guide covering environment, dependencies, and sample configuration for adding new cameras. • Short performance report demonstrating FPS, detection accuracy, and resource usage with at least ten concurrent streams. If you ...
...with the engineer after agreement) - Retries periodically until a success response is received - Idempotency: ensuring the same message isn't sent twice if the response is lost even though delivery actually succeeded ### 3. Agent ↔ Control Plane Connection - The hardware is on-premise with no public IP, so the Agent initiates a persistent outbound connection to the Control Plane (WebSocket or MQTT), not the other way around - Automatic reconnect/heartbeat if the connection drops ### 4. Security - Secure storage of the partner company's API key (never exposed in logs or plain code) - Agent ↔ Control Plane communication encrypted (TLS) - An NDA will be required before sharing API details and the partner company's name ## Required Deliverables - [ ] G...
Need it set up from scratch Flespi 》web application and mobile web app development Teltonika hardware 》 1global sim The core of the job is to wire up Flespi’s MQTT/REST endpoints, store incoming messages, and present them through a clean interface that works equally well on desktop and mobile. Users must be able to log in under different roles—administrator, dispatcher, or read-only guest—and see only the assets and functions granted to them. Functional requirements • Real-time tracking: moving map with live position updates every few seconds. • Historical data analysis: trips, idle time, speed graphs, export to CSV. • Geofencing alerts: create circular or polygon zones, trigger notifications via email and in-app. I’m fine with ...
...biometric scan, encrypting the data and pushing it to a lightweight cloud database or on-prem server. A simple web dashboard or mobile-friendly page should let me filter by date, view heat-maps, export CSV files and delete records on demand to stay privacy-compliant. Acceptance criteria 1. Biometric capture module installed and reporting unique, anonymised IDs with ≤1 s latency. 2. REST or MQTT data flow documented and running for entry/exit, POS spend hooks and indoor location pings. 3. Dashboard reachable over the local network, featuring real-time view and historical export. 4. Installation guide that lets my staff re-flash or reset the system in under 10 minutes. If you have existing code for biometric integration, even better—let’s adapt it quick...
...years building backend systems in production, with real ownership after launch - Node.js in depth. This is your primary language, not something you picked up recently. - MongoDB at scale, including sharding, indexing, and query optimization - Hands-on IoT or real-time telemetry experience. Device fleets, continuous data streams, connection management at scale. Hard requirement. - Message queues (MQTT, RabbitMQ, Kafka, or equivalent), REST and webhook integrations - You have taken a system from small scale to thousands of concurrent connected devices and you remember exactly what broke - Healthcare or safety-critical systems experience is a strong advantage - You can tell a non-technical founder a timeline is wrong, and explain why in plain language - Reliable 8 to 10 hours per we...
...microcontrollers (STM32, ESP32, AVR, PIC, ARM, Arduino, etc.) • Component selection and BOM preparation • PCB assembly and soldering (SMT/THT) • Hardware bring-up, debugging, and testing • Experience using oscilloscopes, logic analyzers, multimeters, and other test equipment • Prototype validation and troubleshooting • Knowledge of communication protocols such as UART, SPI, I2C, CAN, BLE, Wi-Fi, LoRa, MQTT, etc. is a plus. Responsibilities: • Design high-quality PCBs from concept to production. • Develop reliable and optimized embedded firmware. • Assemble prototype PCBs when required. • Perform functional testing, debugging, and validation. • Work closely with us to improve existing designs and develop new products. •...
I need clean, reliable firmware that will sit on my existing RTU hardware, pull live sensor readings, and publish them to my cloud broker over MQTT. The focus is squarely on accurate data collection from the attached sensors and timely transmission upstream; no local heavy processing is required right now. You will work directly in the device’s embedded environment, set up the drivers for the connected sensors, handle the sampling schedule, form properly structured MQTT messages, and make sure every reading reaches the server even in spotty-network conditions (re-connect logic, message queuing, QoS handling, etc.). This project requires an experienced embedded code developer who can deliver quick turnaround times without compromising quality. Previous work on similar...
...current, temperature) to transmit real-time data to a cloud server. AI/Predictive Analytics: Implement AI models to optimize charging strategies, predict battery health, and forecast station demand. Backend & Cloud: Establish cloud connectivity for remote monitoring, billing, and inventory management of charged battery packs. Technical Requirements: Tech Stack: Experience with IoT protocols (MQTT/HTTP), cloud platforms (AWS/Firebase), and mobile/web development frameworks. Hardware Knowledge: Proficiency in interfacing sensors and microcontrollers with battery management systems (BMS). Security & Safety: Implement robust safety protocols for battery monitoring and secure communication between the vehicle, station, and cloud. Deliverables: Source code for the mobil...
I need help giving my current Linux-based messaging stack a refresh. The plan is to deploy the latest EMQX broker, migrate my existing MQTT topics to it, and stand up an IEC server that can exchange data seamlessly with the new broker. Here is what I’m looking for: • Clean installation and hardening of EMQX on my Linux host, including TLS, user authentication, and optimised config files. • Migration or recreation of all current MQTT topics and retained messages so nothing is lost in the switch. • Configuration of a companion IEC server and a reliable bridge to EMQX so data can flow both ways in near-real time. • Basic test scripts or commands that prove publishing, subscribing, and IEC interoperability work end-to-end. • Short hand-...
...updates for both edge devices and drones. Tech Stack - Edge AI: Raspberry Pi 4 / Industrial Edge Computer, Python, OpenCV, ONNX Runtime, YOLOv8 - Swarm Drones: PX4/ArduPilot, MAVSDK/MAVLink, DroneKit, ROS 2 (preferred), AI-based autonomous swarm coordination - Mobile App: Flutter - Backend: Python (FastAPI) - Cloud: AWS IoT Core, API Gateway, Lambda, DynamoDB, S3, SNS, CloudWatch - Communication: MQTT, REST APIs, WebSockets - Authentication: JWT, AWS Cognito - DevOps: Docker, GitHub Actions (CI/CD) - Monitoring: CloudWatch, Logging & Alerting Experience Required: AI/Computer Vision, Edge AI, Raspberry Pi, Swarm Drone Development, PX4/ArduPilot, AWS IoT, Flutter, FastAPI, and Production Cloud Applications....
...include: * One Heltec WiFi LoRa 32 V3 * Rechargeable LiPo battery (same size of the Heltec) * Solar panel sticked ontoto the enclosure (same size of the Heltec) * USB-C charging/programming * Adjustable mounting bracket * Epoxy enclosure (carefull with usb) The firmware shall: * Receive LoRaWAN packets * Record Device ID, RSSI, SNR and timestamp * Forward all receptions to a server over Wi-Fi (HTTP, MQTT or similar) **No localization or triangulation algorithms are required.** The receiver nodes only forward reception data. ### Deliverables * Schematics * PCB layouts * BOM * Gerbers * CAD enclosure (STEP/STL) * Hardware test firmware * Manufacturing files * Documentation * Complete 3D design for approval **before PCB** routing * 2 coin trackers * 6 LoRa repeaters/gateways ...
...integration Project: ESP32-S3 8 Channel Smart Home Switch PCB I need a compact smart home switch PCB similar to commercial retrofit smart switch modules. Purpose: Replace my current ESP + SSR relay setup with a smaller custom PCB. Main Input: - 230V AC input - Designed for Indian home electrical system - 24/7 continuous operation Controller: - ESP32-S3 WiFi module - Firmware will be custom (MQTT based) - Keep UART programming header for flashing firmware - Keep EN/BOOT buttons if required - ESP antenna area should be clear for good WiFi signal Power: - Compact isolated AC to DC power supply - 5V supply for outputs - 3.3V regulator for ESP32 - Do NOT use capacitive dropper power supply Outputs: Total 8 controllable AC outputs: - 6 channels: Use optically isolated TRIAC sw...
...and expose the readings in real time for later analysis. Here’s what I already have in mind: a compact, low-power microcontroller (ESP32 or similar), Wi-Fi connectivity, and a simple set of sensors—temperature, humidity and possibly light or motion—though I’m open to strong technical suggestions. I’ll need you to design the hardware layout, write reliable firmware, and set up the data pipeline (MQTT, REST or another lightweight protocol that fits a home network). Clean, well-documented code with OTA update support is essential. Deliverables • Schematic and PCB files ready for fabrication • Firmware source with build instructions • Basic cloud or local server script for storing and visualising the data • Short user guide ...
...# Objective Design one universal hardware platform that supports: * Passenger cars * SUVs * Commercial vehicles * Trucks * Buses * Construction equipment * Agricultural vehicles The same PCB should support different cable harnesses rather than different PCB designs. --- # Functional Requirements ## Communication * 4G LTE (Cat-1 or Cat-1 bis preferred) * Nano SIM * Optional eSIM support * MQTT * HTTPS * TCP/IP * OTA firmware update capability * Secure firmware architecture --- ## GNSS Must support: * GPS * NavIC (Indian Navigation System) * GLONASS * Galileo * BeiDou * QZSS (optional) Fast satellite acquisition and good urban performance are preferred. --- ## Vehicle Interfaces The PCB shall support: * OBD-II (16-pin connector) * SAE J1939 (9-pin Deutsch connector)...
...Protocol: o Firmware must be capable of packing BLE vector data arrays into lightweight MQTT or HTTPS POST payloads sent directly to our custom API endpoints. Part 2: The Neo Smartpen Integration Product Description The Neo Smartpen is the primary handwriting interface for the platform. To the user, it looks and writes exactly like a premium executive ink pen. However, hidden near the tip is a high-speed infrared camera. When written on paper pre-printed with a microscopic, patented dot-matrix pattern (Ncode), the pen tracks precise spatial coordinates, pen-tip pressure, page identification numbers, and book tracking volumes. [Neo Smartpen] ──(BLE 5.0 Vector Data)──> [Binny 4G Keychain] ──(LTE-M MQTT)──> [ API Server] How It Fits in the Binny Ecosystem • Th...
...field-upgrades, and tight integration between hardware and firmware are critical. Required capabilities • Remote monitoring and control • Data collection and analytics • Predictive maintenance What I expect as deliverables 1. Schematics, BOM, and PCB layout files for the hardware. 2. Production-ready firmware (C/C++ or an RTOS) with documented APIs, OTA update hooks, and secure network stack (MQTT, TLS, or equivalent). 3. A simple web or mobile dashboard mock-up that visualises live data and allows basic control commands, just to prove end-to-end connectivity. 4. Step-by-step build and deployment instructions so my in-house team can replicate the setup. Acceptance criteria • Stable communication over at least one industrial fieldbus or Ether...
...supervisors verify, label, and close events, while archiving video snippets, metadata, and operator notes for later audit. Key expectations • Live video ingestion from standard RTSP/ONVIF streams (4-8 MP typical). • Accurate detections with minimal false positives; configurable confidence thresholds. • Simple UI (web or desktop) showing multiview, playback, and incident timeline. • REST or MQTT hooks so the system can talk to third-party alarms, HR, or maintenance software. • Docker-based deployment script plus clear documentation so I can roll it out on-prem or to a private cloud. Acceptance criteria 1. Demonstrate each module on recorded sample feeds, then on two simultaneous live cameras. 2. Trigger at least one incident per module and show...
...schematics and compact PCBs for several STM32 MCU variants (F4/F7 or H7 families are acceptable) with isolated power stages, industrial-rated IO, and fieldbus interfaces such as RS-485/Modbus, CAN-FD, and Ethernet. • Firmware: production-ready code built in STM32CubeIDE (or compatible toolchains), leveraging FreeRTOS where helpful, with bootloader, OTA update support, and encrypted data exchange (TLS/MQTT or similar). • Networking & orchestration: a lightweight protocol for board-to-board messaging plus seamless hand-off to an existing cloud dashboard (REST/GraphQL endpoints are already available). • Validation: documented bench tests that prove timing accuracy, noise immunity, and safe recovery from power loss. Acceptance criteria will be met once each ...
I need a Blynk mobile dashboard configured for Android. The dashboard should include: Data Streams: ...notifications for: - Power outages - Threshold alerts Ideal Skills: - Experience with Blynk - Android app development - IoT and data visualization expertise I'm looking for an experienced developer to create an Android app that implements an MQTT broker with real-time messaging capabilities. User authentication is required for accessing the broker. Key Requirements: - Android platform development - Real-time messaging support via MQTT - User authentication for secure access Ideal Skills: - Proficiency in Android app development - Experience with MQTT protocols - Knowledge in implementing user authentication Please provide examples of similar proj...
...trend evolution, differential metrics, and slewing-bearing maps. Deliverables 1. Python source code with clear structure and inline documentation 2. Configurable data-acquisition and processing pipeline supporting 20 channels at 1 kHz (or higher, justify if different) 3. SQLite or other light embedded database for on-device storage, sized for one year of raw data before rollover 4. REST, MQTT, or similar lightweight module that pushes daily summaries (JSON) to the cloud endpoint I will provide 5. Interactive local dashboard built with an open-source library (e.g., Plotly Dash, Bokeh, or similar) 6. Installer or Dockerfile that provisions everything on a fresh Intel NUC running Ubuntu 20.04+ 7. Test plan and sample data proving all analyses, fail-over to offline mod...
...schematics and compact PCBs for several STM32 MCU variants (F4/F7 or H7 families are acceptable) with isolated power stages, industrial-rated IO, and fieldbus interfaces such as RS-485/Modbus, CAN-FD, and Ethernet. • Firmware: production-ready code built in STM32CubeIDE (or compatible toolchains), leveraging FreeRTOS where helpful, with bootloader, OTA update support, and encrypted data exchange (TLS/MQTT or similar). • Networking & orchestration: a lightweight protocol for board-to-board messaging plus seamless hand-off to an existing cloud dashboard (REST/GraphQL endpoints are already available). • Validation: documented bench tests that prove timing accuracy, noise immunity, and safe recovery from power loss. Acceptance criteria will be met once each ...
...Azure IoT / Cloud Engineer & Technical Lead (Azure | MQTT | .NET | PostgreSQL) We are looking for an experienced Senior Azure IoT / Cloud Engineer to lead the cloud architecture and implementation of our Energy Management System (EMS). This is a remote contract opportunity for a highly skilled engineer with deep expertise in Azure IoT, MQTT, .NET, and PostgreSQL. Project Overview Our EMS platform connects edge controllers managing solar PV systems, batteries, EV chargers, smart meters, and other energy devices to a secure cloud platform. The primary objective is to build a scalable, secure, and multi-tenant IoT infrastructure that ingests real-time telemetry and exposes reliable APIs for monitoring and control. Responsibilities Design MQTT topic hierarchy an...
I’m building a remote-access MQTT broker dedicated to industrial environments and I need an experienced developer to set it up, harden it, and prove it can reliably move three live data streams—temperature & humidity, machine-performance metrics, and energy-consumption readings—out of the plant and into our analytics layer. Here’s what I expect: • A production-ready MQTT server (Mosquitto, EMQX, or another broker you recommend) installed, secured with TLS and user/password or certificate-based authentication. • Topic structure and retention policies designed so JSON payloads and lightweight ASCII strings both publish and subscribe cleanly. • Sample publisher and subscriber scripts that demonstrate end-to-end delivery for each d...
...PLCs and modern IoT devices—whatever protocol you prefer, as long as updates arrive in roughly one-second intervals or faster and command acknowledgements are rock-solid. • Store each data point so I can trend, search, and export history later; a time-series database such as InfluxDB or TimescaleDB is fine, but I’m open to other suggestions. • Stream readings to the UI in real time (WebSockets, MQTT, or SSE are all acceptable) and flag any value that drifts outside predefined limits with a clear visual cue and an optional email/SMS alert. • Offer a responsive interface that works on desktop and tablet, with role-based logins for view-only versus control users. • Ship with a concise deployment script or container so I can run everything on-prem behi...
...temperature, pressure, vibration, and acoustic inputs, stream that information through a DAQ layer, and expose it to an AI engine that will calculate health scores and remaining-life estimates in near real time. Your assignment is to design and implement the end-to-end integration that makes this possible—from field sensors to the inference API. You will decide the best mix of protocols (e.g., OPC-UA, MQTT, Modbus), structure the data pipeline for sub-second latency, and wire the outputs into the model layer (Python-based, currently using PyTorch but flexible). Robust error handling, time-synchronization, and historical storage (SQL or time-series DB) will all be necessary so the data is reliable enough to train and retrain the models continuously. Key deliverables &b...
