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I am building a network of STM32-based boards that will cooperate as a single, industrial-grade automation platform. The stack must handle real-time sensor acquisition, deterministic control loops, secure cloud connectivity, and reliable board-to-board communication inside a factory environment. Here is what I need from you: • Hardware: reviewed or freshly designed 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 board boots consistently, publishes telemetry, executes remote commands within specified latency, and survives 72-hour soak testing without fault. If you have hands-on experience delivering STM32 or comparable ARM-based solutions for industrial automation, I would like to see concise evidence of that work: a brief description of the project, the MCU family used, and the key challenge you solved. That practical experience will weigh more heavily than formal proposals.
Project ID: 40545486
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I am an Embedded Systems and PCB Design Engineer with experience in Altium Designer and custom hardware development. I can design your PCB from schematic to production-ready files, including: • Schematic Design • PCB Layout • Component Selection • Design Rule Check (DRC) • Gerber Generation • BOM Preparation • Manufacturing Support (JLCPCB, PCBWay, etc.) I have experience with ESP32, STM32, sensor interfaces, power supplies, RF modules, Ethernet, and industrial electronics. Please share the project requirements, schematic (if available), board dimensions, and any special requirements. I can start immediately. Looking forward to working with you. Best Regards
$350 USD in 15 days
4.9
4.9
48 freelancers are bidding on average $939 USD for this job

With over seven years of experience as an electrical engineer specializing in embedded systems, firmware development, and PCB design, I am confident that I am the ideal candidate for your STM32 Industrial IoT Automation project. My past experience includes working with a range of microcontrollers for industrial automation, including ARM-based systems like STM32, Ti Tiva, C2000, and more. Specifically within the realm of firmware development, I have successfully built embedded codes using compatible tools like STM32CubeIDE and FreeRTOS. This has allowed me to create reliable connectivity solutions such as bootloader and OTA update support which will be vital for your project. Complementing my software expertise is my proficiency in PCB design, RF hardware, and schematic creation using Altium Designer, Eagle, among others. In addition to my technical skillset, I take pride in being a diligent problem-solver who delivers timely and thoroughly tested solutions. Proof of this can be seen through my bench tests that validate timing accuracy and noise immunity; ensuring robust designs that can withstand real-world factory conditions.
$750 USD in 7 days
8.3
8.3

Hi, I am an embedded systems engineer with over 16 years of experience. I have extensive hands-on experience delivering STM32 and ARM-based industrial automation products where hardware, firmware, communications, and field reliability all had to work together, not just pass a bench demo. Relevant work includes STM32F4/F7 industrial IO controllers with isolated RS-485/Modbus, CAN, Ethernet telemetry, FreeRTOS tasking, bootloader/field update flow, watchdog recovery, and noisy power/EMI validation. I have also worked on STM32H7 class boards where the main challenge was maintaining deterministic acquisition/control timing while still handling encrypted MQTT/cloud communication in the background. Due to client NDAs, full project files cannot be shared publicly, but I can show practical examples privately. For your system, I would first lock the board roles, IO counts, latency targets, and cloud hand-off contract, then review/design the schematics and PCB constraints around isolation, power integrity, fieldbus protection, and production testability. Firmware would be structured around predictable acquisition/control paths, robust communication state machines, OTA-safe boot behavior, and documented recovery testing including power loss and soak tests. A few useful questions: how many board variants are planned in the first phase, what latency is required for remote commands, and do you already have preferred Ethernet/MQTT security credentials provisioning? Please contact me to discuss details.
$750 USD in 45 days
7.6
7.6

With over a decade of extensive experience in diverse aspects of Electrical Engineering, I can offer the skills and expertise that the STM32 Industrial IoT Automation System project needs. As a adept Electrical Engineer who has dealt hands-on with Arduino, MCU like PIC18 and most importantly, STM32, I have honed the very skills you are seeking. During my tenure, I have successfully developed numerous industrial-grade designs leveraging STM32. To cite an instance that closely echoes your requirements: I worked on a similar factory automation project where robust board-to-board communication protocols and secure cloud connectivity were required. I integrated FreeRTOS effectively for deterministic control loops and ensured stable power stages for reliable functioning within an industrial setup. Additionally, my proficiency includes PCB layout design using Altium - a valuable skill set to refine existing schematics or develop new ones compactly. This is particularly relevant as the boards under consideration must operate within determinate latency in order to maintain synergy. Moreover, my experience with Orcad simulation would help ensure your stack promises reliable real-time data acquisition and accurate work methodologies.
$560 USD in 15 days
7.5
7.5

Hi! I have experience developing STM32-based embedded systems with custom PCB design, FreeRTOS firmware, industrial communication interfaces, and cloud connectivity. I can deliver compact, production-ready hardware, robust firmware with secure OTA support, and reliable board-to-board communication optimized for deterministic control. I'll also perform design reviews, validation, and provide complete documentation to ensure stable long-term operation. I’m available to discuss your architecture and start immediately.
$500 USD in 7 days
7.5
7.5

Hello, I have 10+ years experience in PCB design and prototyping to industry standards. I am proficient in STM32 FreeRtos (non-blocking) with industrial protocols such as modbus RTU/ASCII/TCP, canOpen, mbus,... I also did many IoT Project use MQTT, Custom TCP protocol, OTA via USB, OTA via HTTP/MQTT. I have carefully read your requirements, and I believe I can do the job. I look forward to collaborating with you.
$700 USD in 7 days
6.9
6.9

Since 2003 I am working in Digital Electronic. So more than 18 years of experience in Electronics. Arduino NANO/UNO/MEGA, ESP32 and Raspberry PI to build a digital device to read sensor data and send it to the web server, motor control, control relay switches and LEDs. More than 5(five) years of experience in Arduino design and build. If you want an excellent and error-free project delivery, then send a message to me, please. Have more than 10(years) years of experience in C/C++ to build Windows/Linux applications and micro-controller firmware building. If you want a good job delivery, then send a message to me, please. Since 1995 I have been working on Analog and Digital Electronics to build any kind of device. I have build lots of devices. So more than 20 years of experience on Electronics. Including power supply design. Any kinds of schematic and PCB design. Expert PCB design in EasyEDA Pro IDE.
$750 USD in 15 days
6.6
6.6

Hi, I can help develop your STM32-based industrial IoT automation platform across both hardware and firmware, with a strong focus on deterministic control, reliable field communication, and production-ready validation. I have hands-on experience with STM32 F4/F7/H7-class systems, FreeRTOS firmware, industrial I/O, RS-485/Modbus, CAN/CAN-FD, Ethernet, isolated power stages, secure MQTT/TLS communication, bootloader/OTA update flows, and EMC-aware PCB design for factory environments. My approach would start with defining each board role, I/O count, latency target, communication topology, isolation requirements, and cloud API contract before finalizing schematics, PCB layout constraints, firmware architecture, and test strategy. For firmware, I will structure the system around predictable acquisition/control tasks, robust inter-board messaging, watchdog recovery, safe power-loss behavior, encrypted telemetry, and remote command execution with clear timing verification. For validation, I can prepare documented bench tests covering timing accuracy, noise immunity, reboot recovery, cloud telemetry, command latency, and 72-hour soak testing. A relevant example is an STM32 industrial controller with isolated RS-485/Modbus, Ethernet telemetry, FreeRTOS task scheduling, OTA-safe update logic, and watchdog-based recovery where the main challenge was maintaining deterministic control while cloud communication ran in parallel. Regards,
$500 USD in 2 days
5.7
5.7

Hello, Your project closely matches my background in STM32-based industrial automation and embedded systems. I am an Electrical/Electronics Engineer with 15+ years of experience developing production-ready hardware and firmware, including STM32, industrial communication, PCB design, and real-time control. A recent project involved an STM32F103 industrial controller featuring RS-485/Modbus RTU, isolated industrial I/O, DMA-based data acquisition, and deterministic control for motor and automation applications. One of the key challenges was achieving reliable real-time communication and stable operation in electrically noisy environments through optimized firmware architecture and robust hardware design. I can assist with hardware review or new PCB design, STM32CubeIDE firmware, FreeRTOS integration, bootloader and OTA support, secure MQTT/TLS communication, Ethernet/CAN/RS-485 interfaces, and board-to-board communication. My designs prioritize reliability, maintainability, EMC, and production readiness. I provide clear communication, regular progress updates, and well-documented hardware and firmware throughout the project. I look forward to discussing your architecture and helping develop a reliable industrial automation platform. Best regards, Hamza Embedded Systems | STM32 | PCB Design | Industrial Automation
$250 USD in 5 days
5.4
5.4

⭐⭐⭐⭐⭐ I've reviewed your requirements carefully, and this is exactly the kind of structured embedded systems project that benefits from a disciplined hardware and firmware architecture from day one. I can assist with the complete development cycle, including STM32 schematic and PCB design, FreeRTOS-based firmware, industrial communication interfaces (RS-485, CAN-FD, Ethernet), secure MQTT/TLS connectivity, bootloader/OTA strategy, and validation for reliable long-term operation. My approach emphasizes modular hardware, maintainable firmware, deterministic task scheduling, and production-ready documentation to support future expansion. Milestones: System architecture & hardware design PCB development & review Firmware framework & communication stack Cloud integration & OTA support Validation, soak testing & final documentation A few questions: • How many board variants are planned in the first phase? • Do you have preferred STM32 families (F4, F7, or H7) and PCB design software? I'd be glad to discuss the architecture and help build a scalable, industrial-grade platform from prototype through production.
$500 USD in 7 days
5.1
5.1

Hi, I have 12+ years of experience designing STM32-based industrial systems, delivering 40+ production-grade PCBs using STM32 F4/F7/H7 families with CAN/CAN-FD, RS485/Modbus, and Ethernet, including FreeRTOS firmware, OTA-capable bootloaders, and EMI-hardened layouts for harsh environments. I will design a scalable, deterministic STM32 networked automation platform with reliable real-time control, secure communication, and fault-tolerant board-to-board and cloud integration. Approach ✅ I will define system architecture across MCU nodes, isolate power domains, and design robust schematics for CAN-FD, RS485, and Ethernet with industrial protection. ✅ I will design compact PCB layouts with EMC-aware routing, controlled impedance where required, proper grounding strategy, and industrial IO protection circuits. ✅ I will implement STM32CubeIDE firmware with FreeRTOS, secure bootloader, OTA update flow, and MQTT/TLS-based cloud communication with deterministic messaging. Questions ✅ What STM32 family is preferred per node (F4, F7, or H7), and do you require hardware isolation per communication bus or per full node? ✅ What are your target real-time constraints (max latency and cycle time), and should the inter-board protocol be CAN-based or Ethernet-based at the core? Best, Yaroslav
$500 USD in 7 days
5.2
5.2

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
$450 USD in 7 days
5.2
5.2

Hi, I am firmware developer and have more than 12 years of experience in embedded systems and linux OS. You may see me as a novice developer but I work full time for companies and thats why you might not see much of my reputation here. Your project looks interesting and I am interested in helping you out in this project. Lets get to the practical experience right away: Recently I have worked on STM32F429 based board with STM32F103 working as a 2nd stage bootloader for the main chip. the board is industrial grade with peripherals with SIM900, ethernet, RS485 and many other peripherals. I designed its board and wrote its whole firmware for both the chips. The biggest hurdle was to have OTA which I overcame using TCP raw sockets. The board uses TCP raw sockets, REST API and MQTT protocols. All the firmware was written in STMCubeIDE. Previously I had also worked on STM32F7 based Portenta H7 board. This is already a industrial grade board in which I had to write firmware for a very specific client and used several communication protocols. I would like to discuss more about this project in person. Please let me know if you see me as a suitable candiate. Thanks!
$750 USD in 30 days
4.6
4.6

Hi, The biggest risk in this project is not connecting multiple STM32 boards—it is achieving deterministic real-time performance, reliable industrial communication, and secure cloud connectivity while ensuring the system remains scalable and fault-tolerant in a factory environment. I have experience in STM32-based embedded systems, industrial automation, IoT architectures, real-time communication, and hardware design for connected products. I have worked with STM32 platforms, RS-485/Modbus, CAN, Ethernet, FreeRTOS, and industrial control systems requiring reliable operation under demanding conditions. For this project, I would focus on: 1. Designing a robust hardware architecture with isolated power supplies and industrial-grade interfaces. 2. Developing scalable communication between STM32 nodes using RS-485, CAN-FD, and Ethernet. 3. Designing reliable boot and update mechanisms with OTA support and recovery strategies. The goal is to build a reliable industrial IoT platform that delivers deterministic control, secure connectivity, and stable operation across multiple distributed STM32-based devices. A couple of questions: 1. How many STM32 nodes will be deployed initially? 2. What are the latency requirements for control commands and telemetry updates? If you message me, I can outline the most practical system architecture and communication strategy for your industrial automation platform. Best regards, Prat PCB Must Innovations
$500 USD in 4 days
6.4
6.4

Hi, i am embedded system engineer with 11 years of experience, recently i develop factory automation with stm32 and medical device also with stm32. I can help you design it for industrial standard, RS485 modbus rtu, can bus. The main challenge will be creating OTA, this micro F4 or F7 dont have wireless or any internet connection, which type of connection do you have in mind? WIFI, gsm, or ethernet because you menation MQTT, REST, and TLS
$5,000 USD in 30 days
4.6
4.6

Having worked intensively in the field of industrial automation, I have substantial expertise in firmware development, hardware design, and embedding systems. My multi-faceted proficiency aligns perfectly with your STM32 Industrial IoT Automation project. Given your need for compact PCBs with specific features such as isolated power stages and industrial-rated IO, my ability to design and problem-solve using Altium Designer will be an invaluable asset. Moreover, I am well acquainted with fieldbus interfaces such as RS-485/Modbus, CAN-FD, and Ethernet that you require for seamless connectivity. My experience with several similar automation projects utilizing different PLC systems like SIEMENS TIA Portal, Simatic Manager, and ABB PLC lending me the ability to effectively program MCUs used in your project through STM32CubeIDE. Additionally, my competence in FreeRTOS is well-suited for deterministic control loops management essential for any successful automation project. On the firmware side of things, I offer comprehensive competencies including verifying production-ready code since I've done numerous point-to-point tests (PTP) throughout my career. Critically important to any industrial-grade IoT system is security and reliability - areas where I excel. Understanding the need for secure cloud connectivity with encrypted data exchange as well as the significance of OTA updates support, I assure you efficient implementation of TLS/MQTT or suitable protocols
$500 USD in 7 days
5.4
5.4

Hello, I have strong experience developing STM32-based embedded systems for industrial and IoT applications, including hardware design, PCB development, production-ready firmware, FreeRTOS, CAN, RS-485/Modbus, Ethernet, secure bootloaders, OTA updates, and MQTT/TLS communication. I've delivered STM32F4/F7/H7 projects involving distributed controllers, real-time control, and reliable board-to-board communication. One of the key challenges I solved was building a deterministic multi-board system with secure cloud connectivity and robust fault recovery. I can deliver a reliable, scalable solution with well-documented hardware, firmware, and validation to meet your project requirements. I would be glad to discuss your project and help bring it to production. Best regards,
$800 USD in 6 days
3.4
3.4

I've been building production-grade embedded systems for over a decade, and your STM32 industrial IoT automation project fits squarely in my wheelhouse. I don't do prototypes that work on a bench — I deliver systems that hold up in the field, with proper firmware architecture, reliable communication protocols, and hardware designed for real-world conditions. I've shipped similar multi-node monitoring systems, including a fully offline solar-powered water vending machine for a remote desert community, where the ESP32 handled RFID access, valve control, and quota tracking without any cloud dependency. For your project, I can own the full stack from firmware and PCB design through to shipping you a working prototype, and I'll give you a straight timeline and fixed price before we start.
$300 USD in 2 days
3.5
3.5

Hello Sir/Mam As a seasoned Electrical and Embedded System , I believe that I can bring the virtual reality in your project , I have 100% Grip on C/Embedded , C++ , and Python , I am also well versed in ARM Cortex M3/M4 Architecture , Also have Extensive Experience with MICROCONTROLLERS , Atmega 32, STM32,Yocto ESP32 ,TM4C . I have a great Grip on ARDUINO , MATLAB , PCB LAYOUT and IOT Applications . My ability to deliver exceptional results on time and with at most quality . Please come on chat to discuss more about project. I will be waiting for your response. Thank you !
$251 USD in 2 days
2.9
2.9

Hello, I hope this message finds you well. I’m excited about your job posting and would love the opportunity to contribute to your team. I’m eager to learn new skills and bring value to your projects. Please take a moment to review my profile, and feel free to reach out if you have any questions Thank you for considering my application! Best regards, Wyder
$750 USD in 30 days
2.0
2.0

hello With a career spanning over 9 years, my team and I have decades of collective experience in embedded systems and industrial automation, making us the ideal candidates for your STM32 Industrial IoT Automation System. We specialize in Python, Java, C++, and JavaScript - all of which are relevant to creating hardware, firmware, and networking solutions for your project. Our experience with STM32 and ARM-based microcontrollers is extensive, having delivered multiple projects that demanded deterministic control loops, real-time sensor acquisition and reliable communication within a factory environment. One of our notable successes was a project where we utilized an STM32 MCU family akin to what you are seeking for this project. This involved the design of schematics, building compact PCBs with isolated power stages, developing production-ready code and ensuring reliable connectivity with devices using fieldbus interfaces such as RS-485/Modbus, CAN-FD, and Ethernet. We pride ourselves on being able to deliver on industry-grade demands such as encrypted data exchange for secure cloud connectivity.
$300 USD in 2 days
0.0
0.0

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