Mqtt jobs

PROJECT OVERVIEW We need a small, working proof of concept that collects retail sales transactions over MQTT, stores them locally in SQLite, loads them into Hadoop (HDFS + Hive) and produces basic sales reports. Everything must run on one machine with Docker so we can demo it and build on it later. DATA FLOW 1. A sales simulator (Python) publishes transactions to an MQTT broker (Mosquitto) 2. A collector subscribes and saves every message in SQLite (it keeps working if Hadoop is down) 3. A loader moves new SQLite rows to HDFS on a schedule and on demand 4. Hive tables on HDFS and SQL queries produce the sales reports DELIVERABLES 1. : Mosquitto, single-node Hadoop 3.x (HDFS + YARN), Hive. One command starts it all. 2. Sales simulator - 5 stores, 200 products, configurabl...

...monitoring platform; the job is about tightening up their field readiness rather than starting anything from scratch. The immediate milestone is remote commissioning. Over the next four weeks I want each new unit to boot, establish a secure MQTT link, pull its TLS certs, and start streaming CAN/J1939 and NMEA data to our cloud broker without manual intervention. If you have brought similar hardware online before, you know how valuable clear-cut configs and repeatable scripts are to installers working at sea. Key areas we will tackle together • MQTT broker connection details, authentication and automated cert renewal • TLS certificate generation, storage and rotation on the device • CAN bus and NMEA interface mapping, message filtering and rate manage...

we're a marine technology company developing a vessel monitoring platform. We're looking for someone to help configure our Robustel MG460 Linux-based gateways, including MQTT connectivity, TLS certificates, CAN/J1939, NMEA data integration and remote commissioning. We have an existing platform and are looking for practical configuration and deployment support rather than developing a new system. Have you worked with Robustel or similar industrial gateways? Would you be interested in an initial paid assignment with the possibility of ongoing work as we install more vessels?

...the ability to scrub back through each asset’s tracking history for post-mission review. Access will not be one-size-fits-all. I require multiple user roles so I can limit visibility or editing rights to specific teams while still keeping an overall admin view for myself. You are free to choose the best stack—React, Vue, or similar for the front end; Node, Python, or Go for the back; WebSocket/MQTT for live data; and a mapping API such as Mapbox, Google, or Leaflet—but the result has to be responsive, reliable, and easy for me to extend later. Deliverables • Interactive map with real-time asset positions • Panels for live metrics and status alerts • Timeline or playback tool for historical tracks • Role-based authentication and use...

...field push coordinates to your server. • Your backend processes and stores the data. • A responsive web dashboard (and, if practical, a lightweight companion app) displays each unit’s live position with automatic updates, plus a quick-search panel to zoom to any asset instantly. Deliverables 1. Fully deployed web application (frontend + backend) running on my cloud account. 2. REST or MQTT API so I can plug in any standard GPS tracker. 3. User management with roles (admin, dispatcher, read-only). 4. Basic alert engine (overspeed, ignition on/off). 5. Clear handover: source code, database schema, and install/readme. Acceptance criteria: location latency under 5 s from device to screen, smooth map rendering for up to 200 concurrent vehicles, and ...

1. Project Overview & Architecture The goal of this project is to design a set of modular, decentralized expansion PCB boards for grow tent automation. Instead of a rigid central mainboard, each expansion board functions as an independent node powered by a localized ESP32-C3 Supermini module, communicating via Wi-Fi/MQTT through ESPHome into Home Assistant. To reduce clutter and eliminate the need for multiple external power supplies, all boards will share a common power distribution concept: 12V DC Input (via standard 5.5x2.5mm barrel jacks or terminal blocks) with onboard step-down regulation (e.g., Buck converters) to supply 5V and 3.3V where needed, allowing a single 12V barrel power supply to be daisy-chained across boards. 2. General Requirements for All Boards Microcontr...

...authentication and backend systems. - JavaScript or TypeScript knowledge. - Responsive UI/UX development. - Experience connecting external devices or IoT platforms. - Ability to debug, test and maintain production applications. - Familiarity with Git and structured development workflows. **Additional advantages:** - Experience with solar inverters and battery storage systems. - Modbus TCP/RTU, MQTT and IoT gateways. - OCPP for EV charging. - Smart meters and European P1 interfaces. - Dynamic electricity tariffs. - Energy optimization algorithms. - AI agents and automated energy management. - European residential and commercial electricity systems. Candidates without previous renewable-energy experience may apply if they have strong IoT, API and application development capabili...

...REAL-TIME NOTIFICATIONS - Push notifications for bookings, schedule changes, nearby alerts, and service updates. - Real-time synchronization of relevant application data. - User-configurable notification preferences. 5. SMART DEVICE & IoT INTEGRATION - Design an optional module for connecting compatible smart devices. - Display sensor readings such as temperature, humidity, and air quality. - Support MQTT or secure APIs for device communication where appropriate. - Create device-status indicators, historical charts, and configurable alerts. 6. BACKEND & DATABASE ENGINEERING - Build backend APIs using Python/FastAPI or Node.js. - Design a PostgreSQL database for users, providers, locations, bookings, and device data. - Implement authentication, authorization, role-based ...

NO PLACEHOLDERS. Do not insert a placeholder: please read the project details carefully because here are all the details you need to make an accurate estimation. I need to identify, install, and configure open-source software that allows me to remotely manage IoT devices without using an MQTT network. Currently, I intend to manage control units that oversee already installed environmental sensors performing: • temperature monitoring • humidity detection • air quality measurement The connectivity currently available on the devices is based on FTP; the control units are equipped with a telephone SIM. The goal is to have a dashboard that allows for viewing device status, monitoring data flow from devices, performing tasks on devices (such as firmware updates), etc...

...expectations • Cross-platform codebase using Flutter or React Native is welcome, but separate native projects are fine if you prefer Swift + Kotlin. • Secure REST or GraphQL endpoints will be supplied; you hook in, handle authentication, and keep tracking latency below five seconds. • Push messaging should rely on Firebase Cloud Messaging and APNs. • Real-time updates may come through WebSockets, MQTT, or Firebase Realtime Database—choose whichever meets the latency target. • Clean MVC/MVVM architecture, clear inline comments, and Git version control from day one. Deliverables 1. Wireframes and final UI assets (Figma / Adobe XD). 2. Fully functioning iOS and Android apps. 3. Backend integration layer with environment variables for e...

...applicable display, lighting, and interactive controls. • Keep the Prototype #1 interface practical and straightforward. • Troubleshoot communications between the interface and physical hardware. • Participate in integration and functional testing. • Deliver all applicable source code and configuration files. Preferred Skills / Experience: IoT; ESP32 Integration; Wi-Fi; Bluetooth/BLE; REST/WebSocket/MQTT or Similar Protocols; Mobile-Responsive Web Interfaces; JavaScript/TypeScript or Comparable Technologies; Hardware Control Interfaces COMPENSATION - $700 USD FOR THIS TEAM MEMBER Fixed Price: $700 USD for this individual position. The selected professional for this position will receive $700 USD total for successful completion of the complete assigned scop...

Title: Urgent: MQTT to Hadoop Sales Data Pipeline with Hive Data Warehouse (Small Scope) We need an experienced Big Data developer to build a compact, end-to-end sales data pipeline. The scope is small and well defined, and we need it delivered quickly. We plan to award within hours to the right candidate. The project is fully self-contained. It needs no account access, credentials, invitations or files from our side. You can start right away in your own local environment. PROJECT OVERVIEW Build a small pipeline that ingests real-time sales events through MQTT, stores them in Hadoop, and organizes them in a Hive data warehouse for basic sales reporting. SCOPE OF WORK Part 1 - Data Generation (MQTT Publisher) Write a Python script that publishes simulated sales...

...Modbus communications - System diagnostics FreeRTOS or another RTOS may be used if recommended by the engineer. The control logic should remain fully operational independently of internet, cloud, or wireless connectivity. ## Optional IoT Architecture We are also considering a separate IoT communication processor such as ESP32-S3. Possible IoT functions include: - Wi-Fi - BLE provisioning - MQTT - HTTPS/API communication - Cloud monitoring - Alarm/event reporting - Machine status reporting - Remote diagnostics - OTA firmware updates - Future mobile/web application integration The IoT processor must not interfere with or compromise the reliability of the main machine-control functions. The engineer should advise whether: 1. A dual-MCU architecture is preferable, or 2. A si...

...Linux OS installation and configuration 2. Install OS dependencies for two different MQTT profiles, 2a. MQTT broker 2b. MQTT client. 3. Develop an display controll software that via MQTT commands can control functions as (on/off, change input, adjust volume) via either HDMI CEC or serial 4. Develop an display presentation software that will present text on an HDMI display depending on MQTT commands 5. Develop software for sending triggers from physical buttons via GPIO signals to MQTT broker 6. Develop documentation for configure MQTT broker (IP and credentials) 7. Develope an ”Mapper” thats maps an pressed button to display message number X 8. Develope an Display status software that send display state to an MQTT topic...

...determine whether we can integrate the watch directly with our own cloud platform. We need access, where supported, to: GPS/location SOS events Fall detection Heart rate SpO₂ Blood pressure Temperature ECG/HRV Steps/activity Sleep Movement/accelerometer data Battery level Device online/offline status Timestamped sensor data Device/firmware status Please confirm whether data can be received through API, MQTT, HTTP, SDK, webhook or another real-time protocol. The objective is to avoid depending solely on the manufacturer's existing mobile application. 2. AI Anomaly Detection The most important feature is personalized AI monitoring. The AI should learn each elderly person's normal baseline rather than relying only on fixed thresholds. It should learn patterns such as: ...

...network reconnect/recovery. Low-power/sleep mode. MCU with sufficient Flash/RAM, UART, GPIO, ADC and low-power capability. SWD/JTAG/USB programming and debugging interface. Proper test points for hardware debugging. USB/charging interface as appropriate. Software/Firmware Compatibility I will develop the firmware myself, so the hardware should support: Cellular module AT-command control. GNSS control. MQTT/HTTP/TCP communication. Communication with my own FastAPI/cloud backend. OTA firmware updates in the future. Accelerometer, SOS, buzzer and battery control. Reliable network/GPS recovery. Firmware development is NOT included in this PCB project. Manufacturing Requirements The PCB must be designed for: JLCPCB/standard SMT assembly. Low-cost component selection without compromisi...

...We are looking for a Junior/Fresher Node-RED Automation Developer to support our automation projects. The candidate will be responsible for creating and modifying Node-RED automation flows and developing basic Node-RED Dashboard 2.0 interfaces. Required Skills: - Basic knowledge of Node-RED - Ability to create automation flows using Nodes - Node-RED Dashboard 2.0 knowledge - Basic knowledge of MQTT - Basic understanding of HTTP/API integration - Basic knowledge of Modbus/RS485 will be an advantage - Ability to troubleshoot and modify existing flows - Basic knowledge of JavaScript/function nodes is preferred Project Work: - Develop automation flows as per provided requirements - Create Dashboard 2.0 screens - Connect sensors/devices with Node-RED - Configure data monitoring, ...

...stack. • Stage 2 – the traveller places a finger on the scanner; the board must capture, match locally, then encrypt the result. • Stage 3 – the ESP transmits the signed approval to my cloud endpoint; only a positive response prompts the relay that opens the gate. What I need from you 1. Firmware (Arduino IDE or ESP-IDF) that handles sensor drivers, match-on-device logic, and secure HTTPS/MQTT messaging. 2. A concise wiring diagram and BOM showing the fingerprint module, ESP, relay, power regulation, and any level-shifters. 3. A short setup guide so I can flash, enrol prints, and test end-to-end on my bench. Acceptance criteria • First print-to-decision time under 2 s. • TLS-encrypted traffic validated with a self-signed certificate...

...the cloud over cellular when Wi-Fi is unavailable, and relay actionable alerts back to the user in real time. Here is what I expect: • Hardware design that accommodates the five radios with proper coexistence planning, power management and antenna layout. • Embedded firmware that can automatically select the best back-haul (LTE or Wi-Fi), maintain secure connections and expose a clean API or MQTT/HTTP interface for the smart-home layer. Also with bluetooth, zigbee and rf. • Deliverables including schematics, PCB files, firmware source, build instructions and a short test report confirming radio performance and end-to-end alert latency. If you have previous experience blending multiple wireless stacks on resource-constrained hardware and can move from design to...

...read on desktop, tablet and phone. I expect dynamic charts that update without a page reload, large value tiles for at-a-glance status and visual cues (colour changes or icons) whenever a reading crosses a preset threshold. Historical data should be retained so I can scroll back through the past 24 h, and the whole layout must be simple enough for me to tweak later through the Node-RED editor. If MQTT, HTTP or WebSocket nodes are needed to pull in the sensor payloads, please wire them in and annotate the flow so I know exactly where each sensor enters the pipeline. Any additional npm modules you rely on should be listed in a quick README. Deliverables: • Exported, well-commented (or .flow) ready to import • Custom CSS or template nodes used for the dashboard look-...

I am developing a smart-home edge AI device called MEGA. I need an engineer to develop the core software platform / MEGA OS for an embedded Linux-based device, together with the backend architecture and web application. The system must support: Embedded Linux Voice AI Local/Edge AI Wi-Fi / Bluetooth MQTT Matter / Zigbee integration Device management Local automation Secure API WebSocket real-time communication OTA firmware/software updates User accounts and permissions Web dashboard Device monitoring and configuration Future camera/Vision AI support for MEGA Pro MEGA Core and MEGA Pro must run the same MEGA OS architecture. MEGA Pro will additionally support camera-based vision and person recognition. I am looking for someone capable of designing the architecture first, then develop...

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

...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. Nice-to-have flexibility If your workflow already supports extras such as remote monitoring dashboards or MQTT publishing, feel free to flag that, but my immediate acceptance criteria focus on local data logging that works out of the box. Tools & libraries you may reach for Python, Jetson GPIO, PySerial, Arduino IDE, sensor libraries (e.g., DHT, BMP, or similar). Deliverables 1. Arduino sketch (.ino) 2. Jetson AGX script(s) with 3. Wiring schematic (image o...

...USB-to-RS485 & UART-to-RS485 • GSM / 4G / LTE modules and AT commands • PCB schematic & layout – KiCad / Altium / Eagle / EasyEDA • Component selection & BOM preparation • Power supply and protection circuits • Logic analyzer / oscilloscope / multimeter • PCB bring-up, debugging and hardware testing • Sensor and industrial interface integration • ADC / 4–20mA / 0–2V interfaces Good to have: ESP32, MQTT, LoRa, FreeRTOS, CAN, BLE/Wi-Fi and industrial IoT experience. Engagement: Project-based initially, with possibility of long-term collaboration. We are specifically looking for someone who is hands-on with hardware and can independently troubleshoot a PCB—not only firmware/software development. Please s...

...use any feature. Once authenticated the user lands on a dashboard where the camera stream appears immediately; from there a record button begins saving footage and silently transfers it to my server (I will give you the endpoint and credentials). A separate tab or overlay houses the IoT switch with instant on/off feedback. I am open to whichever libraries you prefer—ExoPlayer, VLC, ONVIF, RTSP, MQTT, HTTP REST—so long as the stream is smooth, recordings arrive on the server reliably, and the switch responds in real time. Source code and a brief setup guide complete the delivery; no other assets are needed....

I am building a compact, production-ready PCBA that combines a low-power microcontroller with a quad-band GSM module to run stand-alone automation tasks in the field. Its core role is to read temperature, motion, and pressure sensors, make decisions locally, and trigger actuators or alarms while also pushing status updates or alerts over the GSM link (SMS, GPRS, or MQTT—whatever proves most reliable). Scope of work • Schematic capture and multilayer PCB layout, including antenna matching and power-supply conditioning for the GSM current peaks. • Firmware that handles sensor polling, on-board data processing, and a simple AT-command stack to manage the modem. I prefer clean, well-documented C/C++—an RTOS is fine if it keeps timing tight. • Complete m...

...cant set properdpIDs Thanks. I’m running a Tuya-based smart lock that currently relies on Tuya’s cloud, and I want it to function entirely inside my LAN. Lock, unlock, status, battery level—everything has to stay, but without any call home. What I need is solid API integration work. Whether you reverse-engineer the existing Tuya local protocol, pull the device keys, or wrap native commands in MQTT/HTTP, the outcome should be a clean local API I can hit from Home Assistant or a simple Python script on my Raspberry Pi. Deliverables • Working code (Python, Node, or equivalent) that locks/unlocks and reports state over the local network • Step-by-step guide for extracting any required keys or tokens without cloud access • Setup instructions ...

...web/mobile platform via Modbus RS485, MQTT, and REST APIs. Note: This is a pilot project phase with ability to scale the concept to a wider client base after the tests. What We Already Have Complete system architecture and hardware list but need to know if we can get manufacturers with industry rated capabilities (ATEX capacitive probes, ATEX GPS padlocks, gateways, tamper nodes, power protection, LiFePO4 backup, RS485 isolators, enclosures, wiring, tools). Clear requirements: Manufacturers of these hardwares with flexibility in pricing, OEM/Whitelabelling Options RS485/Modbus integration for fuel probes. GPS + cellular gateways with store‑and‑forward. Smart locks that can be controlled remotely and capability to open only inside authorized geofences. Secure MQTT/HTTPS ...

...cloud over cellular when Wi-Fi is unavailable, and relay actionable alerts back to the user in real time. Here is what I expect: • Hardware design that accommodates the five radios with proper coexistence planning, power management and antenna layout. • Embedded firmware that can automatically select the best back-haul (LTE or Wi-Fi), maintain secure connections and expose a clean API or MQTT/HTTP interface for the smart-home layer. Also with bluetooth, zigbee and rf. • Deliverables including schematics, PCB files, firmware source, build instructions and a short test report confirming radio performance and end-to-end alert latency. If you have previous experience blending multiple wireless stacks on resource-constrained hardware and can move from...

...and separate UI wrappers for iOS (Swift/SwiftUI), Android (Kotlin/Jetpack), and the web (React or similar) • Calendar integration that can read, create, and update events in Google, Outlook, and Apple calendars • Knowledge lookup module that hits at least one public API (e.g., Wikipedia, OpenWeather, or News) and returns concise answers in speech • Home-automation bridge supporting common MQTT or Home Assistant endpoints, with room to add more via plugins • A simple admin panel or config file that lets me map new intents to actions without redeploying code • Short setup guide plus recorded demo showing the assistant scheduling a meeting, answering a fact query, and turning on a smart light I’ll test on an iPhone, a recent Android handset,...

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. ...

...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...