Mqtt jobs

...and ESP32 microcontrollers Connect and manage load cells, ADCs, and a range of sensors/peripherals Develop calibration routines, signal filtering, diagnostics, and data-integrity checks Connectivity & Protocols Build robust LoRa links for communication between distributed field units Design custom protocols for both node-to-node and node-to-cloud data exchange Wire up cloud connectivity using MQTT, HTTP, or whichever protocol fits best Hardware & Systems Work Support bring-up of new hardware, prototype testing, and end-to-end system integration Read through and weigh in on schematics, flagging opportunities for hardware improvements Chase down and fix issues spanning hardware, wireless links, sensors, and power delivery Push for better reliability, throughput, and pow...

...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...

Trouble-shoot a pretty simple Home Assistant Green-based automation problem: Following a power failure my Govee thermostats are no longer reporting temperatures via the Mosquito MQTT Integration. Those temperatures control a set of high-window shades and ceiling fans. The H5110 Govee temp are available on my iPhone Govee app. Thermostat diagnostic via the MQTT device info for all the H5110 entities says "This entity is unavailable". Looking for someone with knowledge of these components to work with to diagnose, understand, and resolve the problem.

I am currently looking for freelance opportunities in IoT system development and industrial device integration. Skills & Experience: Sensor integration with 4G Edge Gateways Device setup & configuration MQTT cloud data transmission Raw data collection from industrial devices/sensors Smart Energy Meter (3-Phase) integration Weighing machine data integration with cloud platforms End-to-end testing and deployment support Technologies: MQTT | Edge Gateway (4G/Ethernet) | IoT Cloud Platforms | Industrial Sensors | Energy Monitoring Systems Open for freelance work, POC development, and industrial IoT projects. Available immediately for onsite projects.

...to capture those values continuously and expose them to an external application where they can be logged, visualised, and analysed. A working solution will: • Connect to the IPC427E without disrupting existing PLC logic. • Pull temperature, pressure, and humidity values as they change (sub-second latency preferred). • Forward or publish the data through a standard interface such as OPC UA, MQTT, REST, or a lightweight TCP socket—whichever you deem most robust for 24 × 7 operation. • Include a concise set-up guide detailing configuration inside TIA Portal / WinCC (if required), any libraries or Python/Node-RED scripts used, and steps to redeploy after maintenance. • Demonstrate end-to-end flow in a short live session or recorded vide...

...cloud and surface them inside a polished mobile application that runs on both iOS and Android. The app must let a user watch live data, receive instant alerts whenever the reed sensor changes state, and issue simple remote-control commands back to the device. Here is the flow I have in mind: the ESP32 reads the reed sensor, pushes updates over GSM (or Wi-Fi when available) to a cloud service via MQTT or HTTPS, the cloud stores and forwards those messages, and the mobile app subscribes to that stream, shows status/history, fires push notifications, and allows a command channel for remote control. The primary outcome is the complete firmware–cloud–app pipeline with source code and clear documentation. Key deliverables • Robust ESP32 firmware (ESP-IDF or Arduino) ...

I have a power-meter sensor that already speaks MQTT and I want its readings flowing seamlessly into my self-hosted n8n instance. The goal is two-fold: 1. Real-time monitoring with threshold-based alerts so I immediately know when consumption spikes or drops. 2. Continuous data logging that I can later analyse for usage trends, costs and optimisation. What I expect from you: configure the MQTT broker connection (either my existing Mosquitto or another you recommend), build the n8n workflow that subscribes to the sensor’s topic, parse and clean the payload, write it to a data store of your choice (InfluxDB, PostgreSQL, Google Sheets—open to suggestions), and set up alert nodes (e-mail, Telegram or Slack) that trigger on rules we define together. Acceptance c...

...Multi-Platform Indoor Gateway (SX1302, PoE) • 1 × Raspberry Pi (suitable model for 24/7 operation) System build 1. Install ChirpStack (latest stable), and complete a full LoRaWAN Network Server configuration: frequency plan, network and application keys, device profiles, and gateway bridge settings. 2. Install and license Machinechat JEDI on the Pi, configure it to pull data from ChirpStack’s MQTT broker, and expose the web dashboard on my LAN. 3. Pair all four S2101 sensors with the gateway, verify uplinks and downlinks, and set temperature-only alert rules in Machinechat: selectable threshold, audible/visual alert on the dashboard, and e-mail push via SMTP and SMS. 4. Build a dashboard page that shows: (This should all be pre-done by Machinechat JED...

I need a complete Continuous Emission Monitoring System designed for an industrial site with the sole purpose of environmental monitoring. The unit must continuously track particulate matter (...or PDF summaries. • Calibration and QA/QC procedure documentation so the system stays accurate over time. I can supply basic site drawings and existing network details; everything else—from bill of materials to final deployment guide—should come from you. Proven experience with CEMS, air-quality sensors (e.g., optical laser scatter or beta attenuation), and industrial IoT protocols (Modbus, MQTT, OPC-UA) will be a big plus. Deliverables are the full design package, tested code, and step-by-step setup instructions. I am ready to move quickly once I see a clear plan an...

I need a fresh Ubuntu 22.04 instance spun up on Google’s cloud (their ECS-style VM) and fully configured with three services: an SVN server, Apache, and an MQTT broker. SVN is the priority. I will supply notes that describe the custom repository structure I want as well as the user-authentication rules. You will translate those notes into a working configuration, test that check-ins/outs succeed, and make sure credentials are enforced exactly as specified. Apache only needs a standard install for now—just enough to host basic web content and, if you choose, to act as the front end for SVN via mod_dav_svn. The MQTT broker can be Mosquitto; a stock setup on the default ports is fine so long as it starts automatically and is reachable from the outside once the fire...

...Configure Home Assistant according to best practices. - Create a structured device hierarchy. - Ensure reliable communication between all systems. Custom Development Where native Home Assistant integrations are unavailable or insufficient, the contractor shall: - Develop custom integrations. - Develop custom APIs. - Develop middleware solutions. - Develop scripts and automation services. - Develop MQTT-based integrations where necessary. Automation Create advanced automation scenarios including but not limited to: - Lighting automation - HVAC automation - Energy optimization - Occupancy-based automation - Security automation - Sonos audio automation - Notification and alert systems Dashboard Development Create professional dashboards including: - Building overview - HVAC...

...core team specializing in full-cycle IoT and embedded product help startups, researchers, and companies turn ideas into fully working, production-ready IoT products, from PCB and firmware to cloud, AI, and mobile Core Expertise Covers the Entire IoT Chain-> Embedded Firmware DevelopmentSTM32, ESP32, Arduino, nRF, PIC, Raspberry PiBare-metal & RTOS (FreeRTOS)BLE, Wi-Fi, LoRa, MQTT, CAN, SPI, I²C, UARTSensor integration, power optimization, OTA updates-> PCB Design & Hardware EngineeringSchematic + PCB design (EasyEDA, Altium, KiCad)Single-layer to multilayer boardsBOM optimization & DFM/DFA supportPrototype-ready Gerbers & manufacturing files-> Cloud, Backend & AI IntegrationAWS, Firebase, custom backend APIsIoT dashboards & device managemen...

...enough to support control-room dashboards, and the results should be exposed through an API the rest of the system can call. Key deliverables • Data pipeline that pulls JSON sensor streams and historical records into a unified store • Predictive models with documented performance metrics (precision, recall, ROC-AUC) • Automated retraining script tied to new data drops • REST endpoint (or MQTT topic) that returns health indices and recommended maintenance windows • Concise technical documentation so our engineers can maintain and extend the code Acceptance criteria – Model accuracy equal to or better than the current rule-based alarms by at least 20 % – End-to-end latency under 5 s for a single turbine data packet – Code...

...Engineer to support environment setup, deployment automation, monitoring, and security best practices. This is a pragmatic MVP build, not a large enterprise deployment. We are looking for someone who can build a clean, secure, scalable foundation without unnecessary overengineering. The platform includes: - Multi-tenant SaaS web application - Dockerized backend services - PostgreSQL database - MQTT-based telemetry ingestion - IoT / LoRaWAN integrations - Secure outbound integrations from edge systems - Web-first MVP (mobile later) Current State - Backend development already in progress - Product architecture defined - Development team already working - Looking for a DevOps partner to establish cloud foundation and deployment standards Scope of Work Phase 1 – Architec...

...Source & Transparency: All source code must be entirely open and unencrypted. Handover: Full deployment documentation, repository access, and all system/root passwords must be shared upon project completion. Hardware documentation: Manuals and specification sheets for the Selec meters and USR-W630 will be provided. Preferred Skills Strong experience with industrial IoT protocols (Modbus RTU/TCP, MQTT, RS485). Hands-on experience configuring serial-to-ethernet gateways (specifically USR IOT devices). Proficiency in database management optimized for time-series data (e.g., PostgreSQL, InfluxDB, MySQL) handling high write-loads. Full-stack web development (Node.js, Python/Django, React, or similar) and VPS server deployment (Ubuntu/Linux). To Apply Please review the attac...

...time. Scope of work • Port or configure a reliable BACnet stack on the ESP32 (C/C++ or ESP-IDF preferred). • Create BACnet objects that report temperature, humidity, airflow, CO₂ levels, and any other standard unit parameters typically required for a complete HVAC profile. • Ensure each object is properly readable over BACnet/IP and supports basic COV subscription. • Provide a sample MQTT or serial debug output so I can cross-check readings during bench testing. • Supply clear build instructions and commented source code that compiles in PlatformIO or ESP-IDF. Acceptance criteria 1. ESP32 announces itself on the network and passes a BACnet Who-Is/I-Am test. 2. All defined objects return live sensor data in the correct engineering units...

...but now I need the hardware side, plus help integrating it with the app. Here’s exactly what I need: A custom IoT PCB (ESP32-based) with: – GSM (SIM800L) – GPS (NEO-6M or similar) – Relay output for motor cut-off – Buzzer output – Optional UART/CAN to read data from LiFePO₄ BMS – Power input from 12V/5V DC I also need: – Firmware flashed on the board that can communicate with my app (Firebase/MQTT or REST API) – 1 to 2 fully assembled working boards shipped to me – Guidance on how to integrate the hardware with my app I will also share a document listing all the features I want on the app so you can help align the hardware outputs and events properly with it. I accept your budget — but I expect A+ grade wo...

Design a modern, military-grade Convoy Tracking & Logistics Management Application that operates in both online and offline environments. The system must be built with an "Offline-First, Auto-Sync" architecture for use in remote, mountainous, border, and communication-denied regions. Core Objective Create a platfor...UI Requirements Dark military-themed interface Tactical command centre aesthetic Interactive maps Real-time charts and analytics Responsive design Modern glassmorphism and cyber-defence styling Large status cards and operational widgets Technology Expectations Flutter or React frontend Offline local database GPS integration Mesh-network communication support Cloud backend for synchronisation REST/MQTT communication Scalable architecture capable of supporti...

...date, shift, or machine ID. Key expectations • Real-time data display – charts, gauges, or tables that update without page refreshes. • Alerts & notifications – e-mail, SMS, or in-app pop-ups whenever thresholds are crossed. • Historical tracking – searchable archives with export to CSV or similar. You can pick the stack you’re most productive with (e.g., Node.js + WebSockets, Python + MQTT, or a comparable IoT-friendly combo). Just keep the code clean, documented, and container-ready so I can deploy it behind our firewall. Deliverables 1. Full source code for front-end, back-end, and database schema. 2. A sample data simulator or clear instructions for wiring my real devices. 3. Brief setup guide and a video walkthrough...

I’m building an interactive visual read-out for a 1,000-node magnetometer array. The hardware side is already defined: every ten Honeywell-style magnetometers sit on a single ESP32 over I²C, and each ESP32 publishes its ten readings (sensor ID + value) via MQTT. In total that gives me 100 publishers feeding a desktop application. Your job is to create the Unity application that subscribes to those MQTT topics, tracks every sensor, and renders an on-screen representation arranged as ten “curtains,” each curtain showing a 10 × 10 grid. The visual must compile and run on both Windows and macOS; I’ll test on a current PC tower and a recent M-series MacBook. Core behaviour • Real-time field strength display – the magnitude coming i...

...to safe levels (for example, start a fan, close blinds or activate a humidifier). You will be free to choose the most reliable digital sensors, but they must interface cleanly with Raspberry Pi GPIO and be available through common distributors. I expect clean, well-commented code—preferably in Python—with a simple dashboard or web interface that shows live data and allows threshold adjustments. MQTT or similar lightweight messaging is welcome for internal communication; Grafana, Node-RED or comparable tools can be used if they speed development without bloating the Pi. Deliverables: • Schematic and parts list for the sensor and actuator wiring • Fully documented Pi image or installation script containing all software components • Source code repos...

...requests/history and Mark as Served workflow. • Super Admin / internal console: Global dashboard, operators, operations, accounts, revenue, support, settings, manual review, device health, exports, audit logs and permission-controlled internal actions. • Backend and infrastructure: Secure API, relational database, RBAC/permissions, wallet ledger, payment webhooks, device registry, session/device command logic, MQTT/HTTPS device gateway, staging/production deployment, monitoring and backups. • Device simulator and integration testing: A device simulator for command, heartbeat, ACK/EXEC, timeout, offline/degraded and failure scenarios before and during hardware rollout. 3. Important Business and Product Rules • The platform must be production-ready integrated v...

Develop Centralized Solar Monitoring Dashboard (SCADA / IoT ...Real-time dashboard development Site-wise and portfolio-level monitoring Generation, PR, CUF, and performance analytics Alarm & notification management Historical data storage and trend analysis User management with role-based access Excel/PDF report generation Mobile-responsive web application Preferred Skills React.js / Angular Python (FastAPI/Django) or Node.js PostgreSQL / Time-Series Databases MQTT, Modbus TCP/RTU SCADA, EMS, Industrial IoT, or Solar Monitoring experience Deliverables: Complete source code Database schema API documentation Deployment guide User training & handover Please Share: Similar SCADA/IoT/Monitoring projects completed Screenshots or demo links Recommended technology stack Estimated...

...drift and noise. That accuracy takes priority over every other subsystem, so component choice, guard routing, Kelvin connections and calibration hooks all need special care. Beyond the impedance path, the board has to host a Hamamatsu C12880MA MEMS spectrometer over SPI, plus a four-channel LED driver delivering 405 nm, 530 nm, 625 nm and 850 nm illumination. The digital side funnels data out via MQTT and ultimately into an SQL back-end, so the MCU and network stack should be laid out for clean signal isolation and straightforward firmware bring-up. Power is supplied by a Li-Po pack with on-board fuel gauging, USB-C charging and 5 V/3 V rails sized for simultaneous analog, digital and LED loads. DELIVERABLES Schematic PDF · PCB layout source files · Gerber + dr...

...drift and noise. That accuracy takes priority over every other subsystem, so component choice, guard routing, Kelvin connections and calibration hooks all need special care. Beyond the impedance path, the board has to host a Hamamatsu C12880MA MEMS spectrometer over SPI, plus a four-channel LED driver delivering 405 nm, 530 nm, 625 nm and 850 nm illumination. The digital side funnels data out via MQTT and ultimately into an SQL back-end, so the MCU and network stack should be laid out for clean signal isolation and straightforward firmware bring-up. Power is supplied by a Li-Po pack with on-board fuel gauging, USB-C charging and 5 V/3 V rails sized for simultaneous analog, digital and LED loads. DELIVERABLES Schematic PDF · PCB layout source files · Gerber + dr...

...location, shift, or operator to uncover fraud trends and verify process improvements. Technical expectations The platform must be web-based, responsive, and scalable, written in a mainstream stack you’re comfortable maintaining. Think along the lines of Node.js or Python back-end services, PostgreSQL (or similar) databases, and a modern front-end framework such as React or Vue. Low-latency socket or MQTT channels will be needed to stream RF reader events. All code should be containerised (Docker/K8s ready) for easy deployment. Design direction I need a fully custom look and feel that reflects our brand palette and the fast-paced, high-trust atmosphere of a distribution hub. You’ll collaborate with our designer on colour, typography, and UX wireframes, then trans...

...drift and noise. That accuracy takes priority over every other subsystem, so component choice, guard routing, Kelvin connections and calibration hooks all need special care. Beyond the impedance path, the board has to host a Hamamatsu C12880MA MEMS spectrometer over SPI, plus a four-channel LED driver delivering 405 nm, 530 nm, 625 nm and 850 nm illumination. The digital side funnels data out via MQTT and ultimately into an SQL back-end, so the MCU and network stack should be laid out for clean signal isolation and straightforward firmware bring-up. Power is supplied by a Li-Po pack with on-board fuel gauging, USB-C charging and 5 V/3 V rails sized for simultaneous analog, digital and LED loads. DELIVERABLES Schematic PDF · PCB layout source files · Gerber + dr...

I’m creating Shri Solar, a cross-platform mobile app that lets individual homeowners track every wa...proactively reduce downtime. • Secure sign-up and login with role-based access for owners, installers, and support staff. • Daily, monthly, and yearly production reports downloadable as PDFs or shareable links. • Responsive UI/UX that feels native on phones and tablets. Please design the Firebase (or equivalent) back-end for authentication and data storage, integrate the necessary APIs or MQTT streams from the solar hardware, and deliver clean, well-documented code ready for App Store and Google Play submission. Acceptance criteria will be a working beta on TestFlight and Play Console showing accurate live analytics from demo data, with all alert mechani...

...sockets or REST/MQTT depending on the server. - **Data Normalization**: Convert raw Modbus/TCP data into a unified JSON structure. - **Database (optional)**: Time‑series storage (InfluxDB, TimescaleDB) for historical trends. --- ### Technology Options | Platform | Frameworks | Notes | |----------|------------|-------| | **Desktop** | Python + PyQt / Tkinter | Easier hardware integration, standalone executable | | **Web** | React.js + D3.js / SVG | Rich drag‑and‑drop UI, scalable, accessible remotely | | **Hybrid** | + Node.js | Web‑like UI packaged as desktop app | --- ### Data Flow Example 1. RS485 device → USB converter → `pyserial` reads Modbus registers. 2. TCP/IP server → Socket connection → JSON payloads. 3. Backend normalizes → Publis...

...clean, reliable dashboard that pulls those sensor values, pushes them through the existing Node-RED flow, and renders them live for operators. Here’s the current state: • PLC side: variables published in CODESYS, accessible via OPC UA and MQTT. • Node-RED: flows built, MQTT nodes subscribed, InfluxDB optional but commented out. • Dashboard: UI nodes in place, but bound widgets stay empty and do not refresh. Your task 1. Inspect and repair the Node-RED → dashboard link so sensor values appear instantly. 2. Confirm that the PLC data path (OPC UA or MQTT—whichever you choose) is stable and that timestamps match the PLC cycle. 3. Hand back a working .json export of the flow and a short note describing what was changed so I can learn...

...the technology world. This is a long-term contract. PJ MONEY is the first milestone of a global 4-Phase ecosystem including an Advanced Marketplace (Phase 2), Urban Logistics Grid with background wake-locks (Phase 3), and Micro-investments. Excellence in Phase 1 guarantees your retention for the entire multi-phase journey. Key Architecture Requirements for Phase 1 MVP: Low-latency backend using MQTT binary protocol over HTTP polling for 2G network optimization. Native multi-currency engine (XAF, EUR, USD, CNY) with an administrative live rate-lock override. Tri-modal withdrawal gateways prioritizing hardware Fingerprint integration and Acoustic Voiceprint validation. Offline peer-to-peer transaction protocol utilizing Bluetooth Low Energy (BLE) for non-network zones. High-...

...ultrasonic sensors pushing wave-form and flow information. I’m flexible on whether your model runs on the edge (microcontroller, Raspberry Pi, gateway) or in the cloud, provided total latency stays under a few seconds. Language-wise, Python or C++ makes the most sense to integrate with TensorFlow Lite, PyTorch, or a comparable framework, and the service should talk to our existing SCADA stack via MQTT or HTTP. Because our field laptops and servers are a mix, please containerise or otherwise package the build so it can be deployed on Windows, Linux, and macOS without code changes. Deliverables • Reproducible training pipeline with documented source • Inference engine returning leak probability and remaining-life estimate via API • Lightweight web dashboar...

I am looking for an experienced embedded firmware engineer to help me configure a **Nordic nRF9151 Development Kit** to read onboard sensors and publish raw data over **NB-IoT** to a self-hosted **Mosquitto MQTT broker**. The hardware is already fitted with basic temperature and humidity sensors. The goal of this project is a clean, efficient, raw data push with zero edge processing—just straightforward sensor readings published at a configurable interval. ### Work Arrangement (100% Remote) Because the hardware is in my possession, you will work remotely. You can choose to: 1. Guide me live through the setup and testing process, **OR** 2. Supply a pre-compiled binary, clear flashing/repeatable instructions, and the source code so I can flash and verify on my end. --- ###...

I’m ready to put my Nordic nRF9151 development kit through its paces. The board is already fitted with basic temperature and humidity sensors; what I need now is a clean, NB-IoT-powered data push to a Mosquitto broker with no extra processing—just raw readings published at a sensible interval. All interaction will take place remotely. You can guide me live, or supply clear, repeatable instructions and firmware so I can flash and verify on my end. Key points you’ll handle: • Configure the NB-IoT link on the nRF9151 DK. • Create or adapt lightweight firmware (Nordic SDK or Zephyr—your call) that reads the onboard sensors and publishes to my Mosquitto topic. • Provide concise steps for any required modem/SIM setup and broker credentials. •...

.../ Protocol Integration: Configure the listener/endpoint to accept data packages from the Siltech devices. Communication & Protocol Details: To successfully redirect the transmission, we need to build the receiver based on the device's communication protocol. The device typically transmits data via one of the following protocols (we are extracting the exact API/device documentation for you): • MQTT (Broker setup) • Mod bust Protocol. • HTTP / HTTPS Webhooks (REST API Endpoints) • TCP / UDP Raw Sockets Next Steps: We want to understand if you have prior experience with IoT telemetry data and if you can build this full-stack application for us. Please let us know your availability for a brief call this week to discuss the project scope, timelines, and...