ATEX Tanker Trailer Monitoring System IoT System Build (Hardware/APIs)

@Microlent

Hello, I am Dr. Rajesh Rolen, PhD in Computer Science & Engineering, with experience of over 20+ years in API Development, Node.js, Internet of Things (IoT) As a preferred freelancer in the top 1%, I have done 400+ projects here on freelancer.com, I have 4.9 ratings out of 5 on average, which showcases my quality of work and timely delivery. Key Highlights: - Free Hosting Support on the Cloud or any desired platform. - Free 3 months of post-delivery support to ensure that our client doesn’t face any challenges after the launch of the project. - Free Dedicated tester on projects to ensure quality delivery, so clients don’t need to act as a tester. - 10+ Years experience UI/UX team to ensure intuitive UI. Portfolio: https://www.freelancer.com/u/Microlent Please open the chat and send me a message, so we can have a more detailed discussion about the project to give you the project timeline and cost. Thank you for considering my services. I look forward to engaging in a productive conversation and understanding how I can be of assistance in bringing your project to life. Regards Rajesh Rolen

@corpmember29

FUEL TELEMATICS + ATEX HARDWARE — READY FOR THE PILOT. Hi, I’m Christina, with 12+ years of experience in IoT, embedded, backend and cloud development. I understand you need a partner who can handle hardware sourcing plus end-to-end integration, not just coding. I’ve worked on similar IoT systems using RS485/Modbus, ESP32, GPS gateways, MQTT, ThingsBoard, PostgreSQL and secure APIs. I can qualify ATEX/IECEx probes, smart locks and gateways, verify certificates/protocols, negotiate prototype/OEM options, then bench-test and integrate the selected hardware. I’d build the flow: Sensors/GPS → Gateway/ESP32 → MQTT/ThingsBoard → Secure API → Alerts, reconciliation & dashboards, with store-and-forward, tamper detection, geofencing, RBAC, audit logs and multi-tenant security. I can start with your blueprint and provide clear milestones for sourcing, firmware and backend integration. THANKS CHRISTINA

@sufyanasmat38

Hi, I can support the complete IoT pilot from hardware sourcing to firmware and backend integration. I have experience with ESP32, RS485/Modbus, MQTT, GPS/telematics, FastAPI/Node.js, ThingsBoard and secure REST APIs. I can help qualify suitable ATEX/IECEx-rated hardware, configure gateways, build the ESP32 telemetry/tamper layer, and connect everything to your multi-tenant backend with alerts and audit logs. I can also provide clear documentation, testing reports, and a practical pilot roadmap. Please inbox me to discuss your blueprint and start with supplier qualification.

@juanestebana17

Hello! I understand you need a pilot-ready ATEX tanker trailer monitoring system with qualified hardware sourcing, RS485/Modbus fuel probe integration, MQTT telemetry, geofence-based smart lock control, and secure backend APIs for ThingsBoard and custom workflows. I’ve spent the last several years solving exactly this type of problem across PCB Design and Layout, Microcontroller Programming (STM32 / ESP32), and MQTT-based IoT systems, including rugged embedded devices, gateway integration, and API layers built with Node.js, Python, SQL, and Git-backed delivery. I can help validate supplier options, review protocol documents and register maps, build the firmware and buffering logic, and connect the devices cleanly into your platform with a secure, scalable implementation. I’m ready to get started, and I’m confident we can make this project a success and deliver it to a high standard. I’m committed to ensuring everything is completed professionally, efficiently, and exactly according to your requirements. Best regards!

@CorporateRD

Hey! I understand you’re building a pilot fuel tanker monitoring system combining ATEX/IECEx hardware, GPS tracking, smart locks, fuel probes, tamper detection, and IoT telemetry, with the goal of validating the complete solution before scaling it to more clients. I’d build this as a reliable IoT + embedded + backend system, using RS485/Modbus for sensors, ESP32/STM32 for secondary monitoring, Teltonika or equivalent gateways for connectivity, MQTT/ThingsBoard for telemetry, and FastAPI/Node.js with PostgreSQL/TimescaleDB for APIs and business logic. MY QUESTIONS: What tanker models, voltage systems, and compartment configurations will the pilot support, and where exactly will the probes, locks, and tamper sensors be installed? What fuel-level accuracy and reconciliation rules should be used to identify leakage, unauthorized discharge, or quantity differences between loading and delivery? How long should devices continue storing GPS, fuel, lock, and tamper data while offline before automatically synchronizing everything once connectivity returns? I'll be available anytime to chat. What does your calendar look like? Let's hop on a meeting to discuss your requirements and deliverables for this project. Thanks!! The budget and time frame are placeholders. Arsalan AS From Royal Designs

@markoa7

I’ve reviewed your ATEX tanker telemetry brief and can align sourcing, firmware, and backend integration for a fast-start pilot with scalable potential. My background spans embedded systems, PCB design, and IoT deployments, with hands-on work in Microcontroller Programming (STM32 / ESP32), Internet of Things (IoT), and API Development. Plan-wise, I’ll map ATEX‑rated hardware suppliers, verify certificates, and negotiate prototype pricing with OEM/white‑label options. Firmware will configure the gateway for GPS, store‑and‑forward, and Modbus/RS485 sensors, with ESP32 nodes handling tamper detection and offline telemetry. Backend will expose MQTT to ThingsBoard and secure REST APIs. What are the top three constraints (cost, regulatory compliance, deployment timeline) you consider critical for the pilot’s success, and which KPI would define success in the first 6 weeks? Marko Aleksic.

@MuhammadUzair16

Hi, I am an embedded systems engineer with over 16 years of experience developing industrial IoT, telematics, RS485/Modbus sensor interfaces, ESP32/STM32 firmware, secure MQTT telemetry, and backend APIs. I have delivered comparable vehicle tracking, remote monitoring, tamper detection, offline data buffering, geofencing, and automotive power-control solutions. I can support both supplier qualification and engineering. I will verify ATEX/IECEx certificates against official databases, obtain register maps and protocol documents, compare prototype MOQs/lead times, and assess OEM options. For integration, I can configure Teltonika FMC130-class gateways, connect Modbus fuel probes, develop the ESP32 tamper node, and implement store-and-forward telemetry and secure lock-control workflows. I can also connect devices to ThingsBoard and build the required REST/MQTT layer with tenant isolation, roles, audit records, and demonstration alerts. Relevant work includes RS485 industrial instruments, Teltonika-class cellular/GNSS gateways, ESP32 nodes, vehicle electrical protection, and API-connected access-control devices. These projects cannot be shared publicly, but I can show suitable examples privately. My pilot estimate is $150 for supplier qualification, $350 for firmware/integration, and $250 for the initial backend/API integration. Workstreams can overlap for delivery within 14 days, assuming hardware and remote test access are available; device, shipping, and certification-lab costs are excluded. Which probe and GPS-lock models are currently shortlisted, and is the ThingsBoard instance already configured? Please contact me to discuss details.

@hayteekeys

HI, KINDLY READ THROUGH MY PROPOSAL I can cover engineering integration (gateway, ESP32 tamper node, Modbus, MQTT, FastAPI/ThingsBoard) and supplier qualification for your petrol/AGO tanker pilot. I will verify ATEX/IECEx paperwork rather than invent certificates. A. Hardware sourcing Qualify ATEX capacitive RS485 probes, ATEX GPS padlocks, Teltonika FMC130 (or equivalent), IS RS485 isolators, 12/24 V protection, LiFePO4 backup, enclosures. Check certificate numbers/databases, Modbus maps, lock APIs, prototype MOQ, OEM/white-label B. Firmware / embedded FMC130: GPS, cellular, store-and-forward, Modbus fuel, MQTT to ThingsBoard. ESP32 node: tamper (door, cable, power), buffer + encrypt, truck power (12/24 V, reverse, transients). Geofence unlock only at authorised depots. C. Backend MQTT ingest, REST for trips/waybills, load-vs-delivery reconciliation, alerts, JWT/RBAC, multi-tenant, audit logs, regulator read-only views. Scope I can take Engineering + supplier shortlist and cert/API review. Final ATEX procurement is with the certified OEM; I will not white-label unsafe uncertified probes/locks into a hazardous area. QUESTIONS 1. Target tank count per trailer and probe protocol already specified in the blueprint? 2. ThingsBoard PE already hosted, or to be stood up? 3. Hardware-only vendors vs one team for A+B+C — which do you prefer to contract first? Ready to start from your architecture pack and produce a supplier matrix + integration plan.

@modesorehari6

I am an IoT and full-stack developer experienced in building connected device platforms, telemetry systems, and backend integrations. I have worked on projects involving IoT data collection, device communication, MQTT-based messaging, REST APIs, and cloud dashboards. My experience with Node.js, FastAPI, PostgreSQL, embedded integrations, and secure multi-tenant systems allows me to handle both hardware communication and software integration parts of this project. I will first review your existing architecture and hardware requirements, then help identify suitable ATEX-compliant suppliers and validate device capabilities such as RS485/Modbus communication, MQTT support, GPS tracking, and API availability. For the software side, I can integrate gateways and embedded nodes with your backend, implement telemetry ingestion, alerts, authentication, audit logs, and prepare the system for pilot testing with proper documentation. I am available to start immediately and can dedicate my time to this pilot project. I respect your existing technical blueprint and will work closely with your team to follow your requirements and suggestions. I am also interested in building a long-term partnership as the system scales beyond the initial prototype phase.

@drishinfotech

Your pilot needs a reliable device-to-cloud chain, not just individual hardware integration. ✅ The critical part is qualifying devices first, then making RS485/Modbus telemetry, cellular store-and-forward, tamper events and secure MQTT reach ThingsBoard/backend consistently. ✨ I’d structure the pilot in three layers: hardware qualification → embedded gateway/node integration → secure API, alerts and multi-tenant telemetry. Tag-n-Trac is directly relevant: we’ve integrated BLE/NB-IoT gateways, MQTT, Azure IoT Hub and real-time monitoring; Farrow Tech used ThingsBoard with embedded firmware. ⚡ With over 25+ years of experience in software development and testing, we can take the pilot from bench testing to scalable architecture. ⭐ Deliveries: Supplier qualification • Gateway/ESP32 integration • MQTT/ThingsBoard • APIs • Testing & documentation

@arslanshahid386

Hi, I see you're developing a fuel tanker trailer monitoring system for petrol-PMS/diesel distribution, and you're in need of ATEX-compliant hardware. My expertise in Node.js and API development can help seamlessly integrate these components into a cohesive system. By leveraging my experience with telematics gateways and smart GPS locks, we can ensure real-time data transmission and secure monitoring. This will enhance operational efficiency and safety for your clients. Could you share more about the specific data points you'd like to capture and monitor in this pilot project?

@bojans9

Hello, I can support both sides of your pilot: sourcing ATEX/IECEx‑rated hardware from manufacturers we’ve already worked with (capacitive probes, GPS padlocks, telematics gateways, RS485 isolators, LiFePO4 modules) and delivering full embedded + backend integration. I’ve built tanker/fuel‑logistics IoT systems before using Teltonika FMC130, Queclink GL series, Modbus probes, ESP32 tamper nodes, MQTT → ThingsBoard PE, and FastAPI/Node backends with multi‑tenant isolation. I can qualify suppliers, verify certificates, negotiate prototype pricing, and deliver firmware, gateway configs, API layer, dashboards and bench‑test reports. If you’d like to outline your preferred hardware list or upload your system blueprint, I can begin immediately.

@mcollinscalz

Hi there, Your architecture for hazardous-area fuel tanker telemetry is well-structured. Sourcing low-MOQ, ATEX/IECEx-certified hardware alongside integrating non-blocking RS485 Modbus and ThingsBoard PE requires targeted expertise in ATEX Zone 0/1 compliance, automotive transients, and multi-tenant IoT. Relevant Project Experience & Sourcing Network Custom ESP32 Tamper Node & Power Conditioning: Developed custom ESP-IDF firmware for vehicle-mounted secondary nodes. Engineered ISO 7637-2 surge protection. Scope Execution & Sourcing Strategy A. Hardware Sourcing & OEM Qualification I maintain direct relationships with validated Tier-1 OEMs in China and Europe specializing in ATEX/IECEx certified petroleum IoT hardware offering white-label options and prototype MOQs (1–5 units): ATEX Capacitive Probes (RS485 Modbus): Qualification of Jiada / Topflytech / Gamicos ATEX Zone 0 Ex ia IIBT4 Ga certified probes. B. Firmware & Embedded Integration Teltonika Gateway Configuration: Setup of dual-RS485 polling schedules, Modbus parsing, I/O pin monitoring (discharge valves), and store-and-forward memory buffering for low-connectivity corridors. C. Backend & API Integration (ThingsBoard PE + FastAPI) Ingestion Layer: Custom ThingsBoard PE Rule Chains to process telemetry payloads, decode Modbus registers, compute volume based on strapping tables, and manage multi-tenant access control.

@alluankit01

Hi, I can support this pilot across hardware qualification, embedded integration, and backend/API development for your ATEX tanker monitoring platform. My approach would be phased: • Qualify ATEX/IECEx fuel probes, GPS locks, gateways, RS485 isolators, power modules, batteries, and enclosures • Verify certificates, Modbus maps, protocol/API documents, MOQ, OEM options, lead times, and Nigeria shipping • Configure Teltonika/compatible gateways for GPS, cellular, Modbus and store-and-forward • Develop ESP32 firmware for tamper sensing, buffering, encryption and telemetry • Integrate MQTT with ThingsBoard • Build FastAPI/Node REST APIs for trips, reconciliation, alerts and audit logs • Implement JWT/RBAC and multi-tenant isolation • Provide API documentation, data models, sequence diagrams and test procedures I’m comfortable with ESP32/STM32, C/C++, Python/FastAPI, Node.js, MQTT, Modbus RS485, PostgreSQL, ThingsBoard and IoT telemetry architecture. I can handle engineering and supplier research remotely. Physical ATEX validation and final field/bench certification would remain with approved hardware suppliers/testing facilities. I’d suggest 1 week for supplier qualification, 1–2 weeks for firmware integration, and 1–2 weeks for backend/API pilot integration. Best regards Ankit

@mengw3

I've spent 20+ years on embedded C for ESP32 and STM32, RS485/Modbus sensor work and telematics gateways, and the FastAPI back ends behind them, out of an electronics and EE background, and I am in China where these probes and modules are made. The risk in this pilot sits in what happens when a trailer loses power and coverage mid-run and later replays its buffer. That gap is where a short delivery hides, so level, lock and tamper records still have to line up across it before a reconciliation figure means anything. Truck power is the other place these builds quietly fail, and ATEX paperwork that looks right on a PDF does not always hold up. 1) Probe and gateway proven on the bench before anything goes near a trailer, with the link and the supply taken away mid-run. 2) Tamper and lock kept on their own path, so an opened door or a cut cable is still on record while the gateway is dark, and the valve holds closed whenever position or the backend cannot be trusted. 3) Power handling and LiFePO4 backup tested against what a tractor unhook does to the trailer supply. 4) MQTT into ThingsBoard and FastAPI over Timescale with per-customer isolation, so a replayed buffer never counts a delivery twice and slosh in transit never reads as a discharge. Which gateway, probe and lock are you settling on, and who supplies the bench set? Please contact me to discuss the details.

@invoketech

Hello, I understand you need an ATEX-compliant tanker monitoring solution covering hardware sourcing, RS485/Modbus sensor integration, GPS/telematics, MQTT telemetry and backend API integration for the pilot. I have experience with IoT systems, GPS tracking, MQTT, Node.js, REST APIs, PostgreSQL, embedded integrations and real-time telemetry, including connecting field devices with cloud dashboards and backend platforms. WORKING FLOW: Hardware Review → Validate required probes, gateways, smart locks and supporting components. Device Integration → Configure RS485/Modbus sensors, GPS gateways and ESP32-based monitoring nodes. Telemetry → Implement MQTT communication, buffering, authentication and secure device-to-cloud data flow. Backend → Integrate ThingsBoard/custom APIs for trips, alerts, reconciliation, roles and audit logs. Testing → Perform bench testing for sensor communication, cellular connectivity, power handling and end-to-end telemetry. I can also assist with hardware supplier qualification, technical documentation, API integration and pilot deployment, while keeping the architecture scalable for future multi-tenant expansion. I will deliver HARDWARE INTEGRATION, FIRMWARE/DEVICE CONFIGURATION, MQTT TELEMETRY, BACKEND APIs, SECURITY, TESTING, DOCUMENTATION, AND END-TO-END PILOT SUPPORT. Thanks Invoke Tech

@rofeald

Hi, I can source and qualify ATEX/IECEx tanker-monitoring hardware, then integrate RS485/Modbus fuel probes, GPS locks, and telematics gateways into your ThingsBoard/REST/MQTT stack. I’d verify certificate numbers, register maps, and protocol docs, then build the firmware path for Teltonika FMC130 or equivalent plus an ESP32 tamper node using C/C++, ESP-IDF, and buffered telemetry. On the backend, I can wire secure MQTT ingestion and Node.js/FastAPI APIs for trip management, alerts, reconciliation, and audit logs. For future rollout, I’d structure the device model, tenant isolation, and event pipeline so new probes, locks, and customers can be added without rework. That also helps with NDPC-aligned access control and traceability. I’ll bench-test Modbus reads, cellular/store-and-forward, power transients, and geofence-triggered lock actions before handoff, with source code, configs, docs, and test reports. I’m available in Nigeria time for coordination and can move forward on the supplier shortlist and integration plan.

@SkillCrafts

Your need for an ATEX-compliant IoT system for tanker trailer monitoring, specifically integrating hardware via Modbus RS485, MQTT, and REST APIs, aligns perfectly with our experience in building robust, hazardous-environment telemetry solutions. We've previously delivered similar projects for clients in high-risk industries, ensuring reliable data acquisition and secure transmission from demanding conditions. Our approach involves sourcing certified, prototype-friendly hardware from established ATEX suppliers, prioritizing OEM/white-label options to maintain cost-effectiveness and brand integration. We'll then develop custom firmware for the telematics gateways, enabling seamless Modbus communication with fuel probes and GPS locks. This data will be securely transmitted via MQTT to our cloud backend, where we'll build RESTful APIs for your web/mobile platform, ensuring efficient and scalable data access. To best tailor our solution, could you clarify the expected data refresh rate for critical parameters like fuel level and GPS location? Additionally, what are your initial thoughts on the authentication and authorization mechanisms for API access? I'm available for a brief call to discuss these details and how we can accelerate your pilot project.

@ankits0192

Hello, You already have the architecture and hardware blueprint; the pilot needs a reliable bridge from ATEX-rated field hardware → gateway/ESP32 → MQTT/ThingsBoard → secure APIs, with safety and auditability built in from the start. I can contribute to: * ESP32/STM32 firmware and tamper monitoring * RS485/Modbus fuel-probe integration * Teltonika/telematics gateway configuration * MQTT telemetry and store-and-forward workflows * FastAPI/Node.js REST APIs * PostgreSQL/TimescaleDB data models * JWT/OAuth, RBAC, multi-tenant isolation and audit logs * Trip/waybill, reconciliation and alert workflows * Bench testing, telemetry validation and technical documentation For hardware sourcing, I can help evaluate supplier documentation and integration compatibility, including ATEX/IECEx certificates, Modbus maps, APIs and prototype requirements. I would not claim existing manufacturer relationships or prior tanker projects unless verifiable. I’ll structure the pilot as: supplier qualification → hardware/protocol validation → firmware/gateway integration → MQTT/API layer → end-to-end bench testing → documentation. The $250–750 budget is likely suitable for a focused pilot integration phase, but the complete hardware + firmware + backend scope should be milestone-based. Could you share the technical blueprint and preferred probe/lock/gateway models so I can map the integration points and propose the first milestone? Best regards, Ankit