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IoT Cloud Solution Requirement We have developed a custom PCB-based IoT device consisting of an ESP32 microcontroller, an EC200 GSM (4G) module, an SCD30 sensor for measuring CO₂, temperature, and humidity, and a 5-inch display that shows these sensor readings in real time. 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 future expansion beyond the initial 100 devices while ensuring reliable data collection, visualization, and remote monitoring.
Project ID: 40630770
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35 freelancers are bidding on average ₹38,325 INR for this job

Hi there, I have carefully reviewed your IoT cloud solution requirements and can deliver a secure, scalable system for your initial 100 devices, with room for future expansion. As a mechatronics engineer with nearly five years of experience in embedded systems, PCB design, IoT communication, and data interfaces, I have worked with all the main technologies mentioned in your project, including ESP32, EC200 4G modules, SCD30 sensors, displays, MQTT/HTTPS communication, cloud databases, APIs, Grafana dashboards, and mobile application integration. I can handle secure device-to-cloud communication, data storage, device management, authentication, real-time monitoring, historical reports, alerts, and API integration. My experience will allow me to structure and complete the solution efficiently while providing clear documentation for future maintenance and scaling. Please send me a message to discuss your preferred cloud provider, mobile application requirements, and deployment schedule. Best regards, Samuel tshibangu
₹12,500 INR in 1 day
6.4
6.4

With my extensive experience in designing and developing IoT solutions, I can provide the comprehensive, end-to-end cloud-based system you need for your IoT devices. My proficiency covers all aspects relevant to this project: from the design and assembly of connected hardware, including PCBs, to the implementation of secure communication protocols like MQTT and HTTPS. Moreover, I have built a myriad of intelligent IoT systems like the one you require, and my skills span across embedded systems integration, firmware optimization as well as cloud integration. For example, I’ve worked extensively on ESP32 microcontrollers and GSM modules similar to what you’re already using in your devices. Not only will I deliver a quantity-scalable solution that ensures reliable data collection, visualization, and remote monitoring – my Ai-driven intelligent system capabilities will also further enhance your project by incorporating advanced functionalities such as machine learning for predictive automation. Overall, my aim is to not just meet but exceed your expectations by not only providing the specified ability of transmitting sensor data but also offering a proficient mobile application built for Android and iOS platform. Let's make your IoT vision come alive!
₹20,000 INR in 3 days
6.1
6.1

As an experienced freelancer with a unique and diverse skillset that spans cloud computing, electronics, microcontroller programming, and mobile app development, I am excited to offer my services for your comprehensive IoT cloud-based solution project. In addition to end-to-end implementation of Odoo ERP systems, my team and I design and manufacture customized IoT hardware just like the PCB-based IoT device you've developed. We have a deep understanding of working with microcontrollers such as the ESP32, have experience with GSM modules like the EC200, and have integrated sensors similar to the SCD30 for measuring CO₂, temperature, and humidity. When it comes to creating a secure and scalable cloud environment for your devices, we're well-versed in utilizing MQTT or HTTPS for device communication, integrating API's for mobile applications, and building Grafana dashboards for real-time monitoring and historical analysis. With our extensive knowledge in deploying on AWS, GCP, and Azure platforms, we can ensure reliable data collection, storage, visualization and remote monitoring while keeping data secure. Finally, if future expansion is something you are considering beyond the initial 100 devices, we'll make sure the system we develop is capable of supporting it smoothly.
₹7,000 INR in 7 days
4.8
4.8

HI, I am an experienced electronics and PCB Design engineer, specialised in use of ECAD software such as Altium Designer, KICAD, EasyEDA, etc. for the the design of electronics and PCB. I will design your projects to meet your Requirements and the industry standard. I do all kinds of circuits such as Power delivery circuit, Sensor Integrated Circuits, wireless control, MCUs etc. I will deliver the following. The Schematics for your Design The PCB for the design Bill of materials(If needed) Gerber, Pick and Place and other manufacturing and assembly drawings needed. Full Support and consultancy till the project is done. Kindly send me message for my previous designs and also so we can discuss further on your project I look Forward to working with you. Best Regards, Abdur-Rafiq
₹7,000 INR in 7 days
5.3
5.3

Hi There! As you can see in my portfolio on my profile, I have extensive experience designing PCBs and mass production equipment, just like you need. I can handle your project. I apologize for the simple proposal; I know you're probably tired of reading AI-generated proposals, and I'd rather not waste time on that. If you're interested in working with me, send me a message and we can work out the details! Best Regards!
₹4,500 INR in 7 days
4.8
4.8

As a seasoned mobile app and web developer, my team and I have honed our skills over the past decade developing effective and scalable solutions for a wide range of clients. The IoT project you've described aligns perfectly with our area of expertise and I assure you that we can deliver an exceptional cloud-based solution tailor-made for your 100 deployed devices. We have expansive experience working with IoT devices at scale, optimizing data transmission, ensuring data security, and visualizing it for users in real-time. From device communication using MQTT or HTTPS protocols to robust cloud data storage with user authentication, our solutions are always designed to ensure reliable data collection, visualization, and remote monitoring. Moreover, we're well-versed in developing cross-platform mobile applications for both Android and iOS platforms, which will be pivotal in providing easy access to the sensor readings, historical analysis reports, and alert notifications this project demands. By choosing us, you'll not only get an effective solution but also benefit from our cost-cutting measures as necessary domain and hosting services are provided by us in an affordable manner. So why wait? Let's turn your ideas into reality together!
₹17,000 INR in 7 days
5.2
5.2

Hi there, Your project "Comprehensive IoT Cloud-Based Solution Needed" instantly caught my attention — it's exactly the kind of work we love to take on. I don’t just want to tick the boxes here; my aim is to hand you something that genuinely goes beyond what you pictured. From your brief I can see this involves android, ios, mobile app — all areas we handle in-house. We specialise in Electronics, Mobile App Development, Cloud Computing, Microcontroller, which lines up directly with what you need. How we'd approach it: - Finalise the screens, user flows and feature list with you - Build smooth, native-feeling UI with clean, maintainable code - QA on real devices, then prepare and ship to the store(s) - Post-launch support and iteration once you’re live Delivering at the scale of 100 deployed is no problem for us — we're set up for volume without dropping quality. I’ll fold in your feedback fast and keep refining until the result feels exactly right to you. I can start right away and keep you updated at every step — let’s make this a great one. Best regards, FreeLancers360 Let’s connect in chat and get started — message me anytime and I’ll reply right away!
₹1,500 INR in 5 days
4.1
4.1

Hi, This project requires a complete IoT ecosystem rather than only a cloud dashboard. The key challenge is creating a reliable connection between ESP32-based devices, GSM communication, cloud services, data storage, visualization, and mobile applications while keeping the system secure and scalable. I would approach this by designing a device-to-cloud architecture using MQTT or HTTPS with secure authentication, device identity management, and reliable data transmission handling. Sensor data from the ESP32 devices would be stored in a suitable cloud database, exposed through APIs for the mobile apps, and connected with Grafana for real-time dashboards, historical trends, and device monitoring. The solution would include user authentication, device registration and management, alert handling, reporting, and a structure that can support more devices beyond the initial deployment. I would also consider offline scenarios, network interruptions, and data buffering to prevent sensor data loss over GSM connections. One important point to clarify: do the ESP32 devices already have firmware prepared for MQTT/HTTPS communication, or is the device-side communication layer also part of this project? Thanks.
₹7,000 INR in 7 days
4.1
4.1

Hi, I can build your cloud-based IoT solution for ESP32 + EC200 GSM devices, including secure data transmission, cloud storage, APIs, Grafana dashboard, alerts, and mobile-app-ready backend support. The best solution is to first finalize the data format, device ID structure, transmission frequency, cloud preference, and security method. Then I’ll set up MQTT or HTTPS communication, store CO₂, temperature, humidity, and device status data in a scalable database, expose clean APIs, and configure Grafana for real-time and historical monitoring. I’m comfortable with ESP32 IoT systems, MQTT/HTTPS, GSM-based device communication, cloud platforms, database design, REST APIs, Grafana dashboards, authentication, device management, alert notifications, and scalable IoT architecture. Deliverables will include: * Secure device-to-cloud communication * MQTT/HTTPS data ingestion * Cloud database setup * Device ID and status tracking * REST APIs for mobile app * Grafana live dashboard * Historical trends and reports * CO₂/temp/humidity visualization * Alert notification setup * User authentication flow * Basic device management * Setup and deployment documentation I’ll focus on a reliable, secure, and scalable V1 architecture that supports your first 100 devices and can be expanded later for full Android/iOS apps and advanced device control. Best regards Ankit
₹7,000 INR in 1 day
4.3
4.3

Hello, I am Santosh Chaulagain, a professional Electrical Engineer and PCB Designer with over 7 years of experience in schematic design, PCB layout, and embedded systems, including ESP32, IoT devices, analog and digital circuits. I have successfully completed multiple projects for clients worldwide, delivering reliable and manufacturable designs. I have carefully reviewed your project requirements and I am confident that I can provide a high-quality solution tailored to your needs. My expertise includes PCB design using industry standards, component selection, BOM preparation, Gerber generation, and design optimization for cost and performance. I always ensure that my designs are fabrication-ready and tested for reliability. I focus on clear communication, timely delivery, and customer satisfaction. I am happy to discuss your project in detail and provide revisions until the final result meets your expectations. Looking forward to working with you. Best regards, Santosh C. Electrical Engineer | PCB Designer | ESP32 & IoT Specialist
₹5,000 INR in 7 days
3.7
3.7

I've built this exact pattern before, and I know where the pitfalls are — flaky GSM connections, MQTT reconnection storms, and dashboards that look great in a demo but fall apart under real load. This work is very easy for me. Here's what I bring to this: →I've deployed an ESP32-based air quality monitoring system, with dozens of field nodes publishing over MQTT to a cloud dashboard—the same proven device-to-cloud architecture your project needs. → I've implemented MQTT over TLS with per-device client certificates, so your GSM-connected devices can authenticate securely and a compromised device can be revoked without affecting the fleet → I'll handle the entire stack — cloud backend, time-series data storage, REST APIs for your mobile app, Grafana dashboards, and alert notifications — one team, no vendor coordination → I can have a single device streaming live data to Grafana within 05 days, then scale the architecture to handle 100, 500, or 1,000 devices without a redesign My approach: → First, I'll architect the cloud side — an MQTT broker with TLS, a time-series database for sensor history, and a device registry so each of your 100 ESP32s has a unique identity → Then I'll build the Grafana dashboards for live and historical CO₂/temperature/humidity, the alert system for threshold breaches → Finally, I'll deliver the complete system with documentation Happy to walk you through the architecture and similar past projects on a chat.
₹7,000 INR in 5 days
3.3
3.3

Hi - Bojan here "IOT CLOUD MONITORING PLATFORM" — you need reliable device data flow from 100 sensors to one secure dashboard. I would design the system around MQTT/HTTPS device communication, a cloud database for sensor history, secure device authentication, and APIs that support the mobile app and Grafana dashboards. The important part is handling unstable GSM connections with buffering and retry logic so data is not lost when devices go offline. The architecture should also keep device management, alerts, and user access separate so scaling beyond the first deployment does not require rebuilding the platform. Will the ESP32 firmware already support MQTT/HTTPS communication, or is device-side communication development included in this project? Looking forward to working with you.
₹17,000 INR in 2 days
2.6
2.6

Your setup with the ESP32, EC200 GSM module, SCD30 sensor, and 5-inch display is a solid foundation, and I can see you've put real thought into the hardware. The challenge now is building a cloud layer that's secure, scalable, and actually useful for your 100 devices without becoming a maintenance headache. Here's what I bring to this: → I've built a complete IoT irrigation monitoring system where ESP32 nodes publish sensor data via MQTT to a cloud dashboard, handling exactly the device-to-cloud pipeline you need → I can design a secure MQTT architecture over TLS with per-device certificates, so your GSM devices authenticate individually and stay protected → I'll handle the full stack—firmware for MQTT publishing, cloud backend with data storage, REST APIs for your mobile app, Grafana dashboards, and alert notifications My approach: → Start by mapping your data flow and setting up the cloud infrastructure (AWS IoT Core or similar) with device provisioning and secure certificates → Build the MQTT pipeline, store data in a time-series database, create the Grafana dashboards for live and historical CO₂, temperature, and humidity, plus device status and trends For this scope, the cost would be 6000, which covers the cloud architecture, firmware updates, dashboard setup, and API development. Happy to walk you through the approach and answer any questions on a chat.
₹6,000 INR in 2 days
3.0
3.0

IoT platforms become unreliable when device communication, authentication, and data storage are not designed for intermittent mobile networks, resulting in missing sensor readings and difficult scaling. I have more than 2 years of experience building cloud connected applications with MQTT, FastAPI, PostgreSQL, React Native, and secure API development. I would implement secure MQTT communication with device authentication, store time series sensor data efficiently, expose REST APIs for the mobile app, and integrate Grafana for live dashboards and historical analysis. I recommend MQTT with persistent sessions over HTTPS polling because it reduces bandwidth usage and provides more reliable delivery across unstable GSM connections. Which cloud platform do you plan to use, AWS, Azure, Google Cloud, or a self hosted server? Happy to discuss details in chat. Regards, Muhammad Arriyan
₹5,555 INR in 7 days
1.8
1.8

I completely understand your need for a secure, scalable IoT cloud infrastructure capable of handling real-time sensor data, historical analytics, remote monitoring, and future device expansion. Your vision for combining cloud services, Grafana analytics, and mobile access creates a powerful and future-ready monitoring platform. My team can deliver the complete system, including cloud backend, secure communication, databases, dashboards, authentication, device management, and cross-platform mobile apps. Do you have a preferred database or cloud architecture in mind, such as SQL, TimescaleDB, or InfluxDB?
₹7,000 INR in 7 days
0.0
0.0

I'll build your complete IoT ecosystem from device firmware to mobile app. On the embedded side, I'll configure the ESP32 to securely transmit CO2, temperature, and humidity data via MQTT over your GSM module with certificate-based authentication. For the backend, I'll set up a scalable cloud infrastructure with PostgreSQL for time-series data storage, create REST APIs for mobile consumption, implement JWT-based user authentication, and configure device management for your 100+ units. I'll integrate Grafana to visualize live and historical sensor readings with automated alerts, then develop native Android and iOS apps with real-time data sync. The entire system will be containerized and ready for deployment with robust error handling and monitoring.
₹1,515 INR in 7 days
0.0
0.0

With a wealth of experience in building comprehensive IoT solutions and mobile applications, I am confident that I have the skills necessary to meet all your project requirements. I have hands-on experience working with technologies like React.js, Node.js, and databases like MongoDB – all of which are critical for developing a secure, scalable cloud-based IoT solution such as the one you need for your 100 deployed devices. What sets me apart from others is my approach - from idea to product launch, I ensure to provide clean code, clear communication, and thorough testing. My end-to-end support extends well beyond development as I believe in giving my clients sustained support from UI development to deployment. This means that not only will you receive a robust solution that meets your current needs but one that's built for future expansions. Moreover, I place immense importance on consistent and transparent communication throughout the project lifecycle. So rest assured, as we progress through the project, you will be constantly updated on the progress and any challenges or opportunities that may arise. Looking forward to bridging 30sensor data collection with a cloud platform, delivering secure device communication (MQTT or HTTPS), cloud storage, APIs for mobile apps & Grafana dashboard —leveraging every bit of my experience—into a scalable IoT solution for you!
₹5,000 INR in 7 days
0.0
0.0

**Dear Client,** **Please message me if you'd like to review my previous ESP32, MQTT, Grafana, cloud IoT, and remote monitoring projects.** Your IoT cloud platform project is an excellent match for my expertise in **ESP32, IoT, cloud integration, and embedded systems**. I have **15+ years of R&D experience** developing end-to-end IoT solutions using **ESP32, GSM/4G modules, MQTT, HTTPS, REST APIs, Grafana, InfluxDB, TimescaleDB, Node.js, and cloud platforms**. I have delivered secure sensor-to-cloud architectures for industrial monitoring and remote telemetry. I can deliver: * Secure **MQTT/HTTPS** communication between your ESP32 + EC200 devices and the cloud. * Scalable cloud backend supporting **100+ devices** with room for future expansion. * Database, REST APIs, user authentication, and device management. * **Grafana dashboards** for live and historical CO₂, temperature, humidity, trends, and device status. * Android/iOS-compatible APIs with alert notifications and remote monitoring. * Complete deployment documentation and source code for long-term maintenance. The solution will be designed for **high reliability, security, scalability, and low-latency data visualization**, ensuring seamless operation for your deployed devices. **Best regards,** **Subhash Suman** ESP32 | IoT | MQTT | Grafana | REST API | Cloud | Embedded Systems | 15+ Years Experience
₹25,000 INR in 7 days
0.0
0.0

I recently helped bring several ideas to life by creating clean, professional, and user-friendly solutions that are both practical and visually polished. I’d be happy to do the same for your IoT cloud-based project, focusing on what you need and creating a result that fits your vision. I pay close attention to the details that matter, from secure device communication to real-time dashboards and overall usability. I can assist with cloud architecture, API development, device management, and mobile application integration. I’ll also work with you on any necessary adjustments until you’re satisfied. Only release payment once you’re happy with the final result. You can view my portfolio showcasing similar projects [here](your-portfolio-link). If this sounds like what you’re looking for, send me a message and let’s discuss your project. Regards, joeyb05
₹6,250 INR in 7 days
0.0
0.0

We propose a scalable, secure end-to-end IoT platform for 100+ field devices built on proven components. Device-to-Cloud: Each ESP32 node sends SCD30 (CO₂/temp/humidity) data via the EC200 4G module using MQTT over TLS (HTTPS fallback), authenticated with per-device certificates/tokens. Lightweight JSON payloads minimize GSM data usage. Cloud Backend: MQTT broker (AWS IoT Core/EMQX) ingests data, routing it to a time-series DB (InfluxDB/TimescaleDB) for sensor history and PostgreSQL for device/user metadata. Device shadow tracking enables online/offline status and remote config. APIs & Auth: REST API layer (Node.js/FastAPI) with JWT authentication and role-based access, serving the mobile app and dashboards. Visualization: Grafana connects directly to the time-series DB for live/historical CO₂, temperature, and humidity trends, device status, and fleet views, with configurable alerts pushed via email/SMS/push notification. Mobile App: Cross-platform app (React Native/Flutter) for Android/iOS with live readings, alerts, device status, and historical charts. Scalability: Containerized microservices (Docker/Kubernetes) on managed cloud infra (AWS/Azure) allow horizontal scaling well beyond 100 devices without redesign. Detailed architecture, cost breakdown, and phased rollout plan (POC → pilot → full deployment) available on request.
₹11,000 INR in 7 days
0.0
0.0

Hyderabad, India
Member since Aug 6, 2026
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