Embedded Systems Programmer for PCB Firmware for OBD

@MuhammadUzair16

Hi, I am an embedded systems engineer with over 16 years of experience developing firmware and electronics for connected consumer and automotive products from concept through production. I can refine the STM32 firmware and Windows J2534 DLL integration, focusing on stable CAN/CAN-FD communication, timing, error handling, buffering, and reliable host-to-board operation. I can also reconstruct the PCB from the available board photos, prepare the design and manufacturing files, and support prototype assembly and bring-up alongside the firmware work. My practical approach would be to review the existing source and hardware evidence, confirm interfaces and components, reproduce the schematic/PCB, then test the prototype methodically against the host application and J2534 requirements. Do you have the current firmware/DLL source, clear photos of both PCB sides, and any BOM or known component details? I would be glad to discuss the existing design and agree on the prototype milestones.

@markoa7

Hi, I am an experienced embedded systems programmer who has been in the field for over 8 years. Over this period, I have developed and designed firmware for various MCUs including STM32 which is a key requirement for this project. I have also worked extensively with several J2534 devices and protocols which mean I understand them like the back of my hand. My strong background in automotive diagnostics and CAN bus systems will prove invaluable for your project. In addition, I have a knack for improving system stability which is one of the key responsibilities you desire in the successful candidate. Furthermore, designing PCB boards would be a walk in the park as it aligns with my profound skill set in PCB layout using software such as Kicad and Altium Designer. In conclusion, choosing me will give you access to my vast knowledge that will catalyze a seamless integration between the STM hardware and host applications. I am highly capable of refining and extending existing codebases, building prototypes such as the PCB board from existing photos, and ensuring all communication between hardware and software components are reliable and efficient. My approach is always driven by cost-effectiveness, high-quality solutions, and most importantly meeting deadlines. Let's discuss further how I can bring value to your project!

@tshibsamuel477

Hi there, I carefully reviewed your project requirements and can support both the STM32 firmware development and the PCB redesign/prototyping. I have experience with STM32 embedded systems, CAN/CAN-FD communication, automotive-style interfaces, PCB design, reverse engineering, and hardware bring-up. I can work from your existing J2534 DLL/codebase to refine the firmware communication, improve stability, and ensure reliable integration between the STM32 hardware and the Windows host application. I can also recreate and improve the existing PCB from photos, prepare production files, and support prototype assembly and testing. Given my combined firmware and hardware background, I can move quickly while keeping the design maintainable and production-ready. Just send me a message with the existing code, board photos, and available technical documentation, and I can get started. Best regards, Samuel tshibangu

@RaspberryOculus

As someone with an extensive background in embedded systems, particularly with the STM32 microcontrollers that your project demands, I feel well-suited to tackle the firmware development for your PCB boards. For over 27 years, I have been hands-on in building and scaling systems in different domains, including defense, just like your project. Whether it's implementing communication equipment for the military or ensuring high-level security for edge devices with NIST Post-Quantum Cryptography, I have developed extensive experience in solving complex problems efficiently and reliably. Apart from my deep technical expertise in hardware and silicon - FPGA & RF (inclusive of Xilinx Zynq-7020 and PYNQ), Embedded SoCs (such as STM32 H7/F4), and Physical Layer understanding such as DFM/DFA/EMC compliance - I also possess a strong understanding of protocols and architectures relevant to this project. From working on ACARS/ED137 ground station radio standards to implementing Zephyr RTOS for deterministic task scheduling, I believe this unique blend of skills would be invaluable to your team.

@hayteekeys

HI, KINDLY READ THROUGH MY PROPOSAL I will develop and refine STM32 firmware for reliable communication with J2534 devices and protocols, improve integration with your existing Windows J2534 DLL, and redesign the PCB based on the provided photos of the old board. MY APPROACH ✅ Analyse and enhance the current STM firmware for stability and efficient J2534 communication ✅ Implement/optimise CAN and CAN-FD handling as required ✅ Create an updated PCB design from the existing board photos ✅ Support prototype build and testing if needed DELIVERABLES - Updated, well-documented STM32 firmware - Improved host-side integration notes - New PCB schematic and layout files - Optional prototype assembly support QUESTIONS 1. Which STM32 series is currently used, and can you share the existing firmware or photos of the old board? 2. Do you need the prototype manufactured and shipped, or only the design files? Ready to start immediately.

@hayat38402

Hello, I am Muhammad Javed, an electrical/electronics engineer with more than 10 years of experience in embedded systems, STM32 firmware, PCB design, CAN/CAN-FD, and automotive electronics. I can assist with extending and stabilizing your existing STM-based firmware and integrating it reliably with the Windows J2534 DLL and host applications. I can review the existing architecture, communication flow, STM32 firmware, and J2534 implementation to identify reliability issues and implement the required improvements. I can also reverse-engineer the existing PCB from the supplied board photos and available information, recreate the schematic and PCB layout, and develop a manufacturable replacement board. Where required, I can handle the complete workflow from schematic and PCB design through BOM, Gerbers, prototype fabrication, assembly, programming, and hardware testing. My experience with CAN/CAN-FD, microcontrollers, automotive communication, embedded debugging, and PCB development allows me to approach the hardware and firmware as one integrated system. I will focus on stable communication, robust error handling, reliable host-device interaction, and practical prototype validation. Please provide the existing J2534 DLL/source code, STM32 project, PCB photos, and any available documentation so I can assess the current design and propose the development plan.

@leonidye

Hi, I can help develop the STM32-based OBD/J2534 solution, including firmware refinement, PCB reverse engineering, and prototype development. I understand the project requires reliable communication between the STM hardware, the existing Windows J2534 DLL, and automotive diagnostic interfaces, with particular attention to CAN/CAN-FD and protocol timing. I can review the existing firmware/codebase, identify communication and stability issues, implement the required STM32 firmware changes, and ensure clean integration with the host application and J2534 interface. For the hardware side, I can reverse-engineer the existing PCB from the supplied board photos and documentation, recreate the schematic and PCB in KiCad/Altium, select appropriate automotive-grade components, and prepare manufacturing files. I can also support prototype assembly/bring-up and bench testing, including CAN communication, STM32 programming/debugging, power integrity, and interface validation. I suggest starting with a hardware/firmware assessment, followed by schematic/PCB reconstruction and firmware implementation, then prototype testing and final documentation. I’m ready to review the existing J2534 DLL, PCB photos, and available documentation and discuss the exact STM32, CAN interfaces, and prototype requirements. Regards,

@hamzazayyad

Hello, I’m an Electrical/Electronics Engineer with 15+ years of experience in STM32 firmware, automotive electronics, CAN/CAN-FD, PCB design, and embedded systems, and I can help develop and integrate your STM-based J2534 hardware platform. I can support the project with: ● STM32 firmware development and debugging ● CAN/CAN-FD and automotive communication protocols ● Integration with your existing Windows J2534 DLL and host software ● Improving communication reliability, timing, error handling, and system stability ● STM32-to-PC communication and hardware/software integration ● Reverse engineering the existing PCB from board photos, identifying components/connections, and creating a complete schematic ● PCB redesign and production-ready layout ● Building and testing a prototype PCB ● Hardware/firmware debugging and validation with real automotive interfaces I have extensive hands-on experience with STM32, CAN-based systems, automotive and industrial electronics, PCB development, and low-level embedded C programming. I’m comfortable working with an existing codebase and hardware design, troubleshooting problems at both firmware and electrical levels, and taking the design through prototype testing. For the J2534 portion, I can work from your existing DLL implementation and specification/documentation to ensure the STM32 hardware communicates correctly and reliably with the Windows application. Best regards, Hamza STM32 | Embedded Systems | PCB Design | Automotive CAN

@tetianam8

⭐⭐⭐⭐⭐ I can help with the STM32 firmware, J2534 integration, PCB reconstruction and prototype build as one coordinated project. I’d first review the existing Windows J2534 DLL and STM32 code to map the host/API flow through to the hardware, then identify communication, timing and stability issues. For the hardware, I can work from the existing board/photos and available documentation to reconstruct the required circuitry, including CAN/CAN-FD interfaces, protection, power and host communication. My focus would be on reliable real-world vehicle communication rather than simply making the DLL or firmware compile. I’ll validate CAN timing, message handling, error recovery, buffering and host/device synchronization, then test the complete chain with the recreated PCB. Deliverables can include: • STM32 firmware source and build configuration • J2534 DLL integration/refinements • Recreated editable PCB/schematic files • BOM and manufacturing files • CAN/CAN-FD interface and protection review • Assembled prototype PCB I’m comfortable taking this through PCB design → prototype assembly → firmware → J2534 integration → bench validation, which should reduce the risk of discovering hardware/software interface problems late in the project. Please send the existing DLL/source, STM32 details, old-board photos and any available pinouts or measurements. I can then identify what can be reused and what needs to be reverse-engineered before estimating the prototype scope.

@maxscender

I’ll approach this by treating the existing J2534 DLL and STM firmware as a single system to be stabilized, not just patched. I’ll first map the current data flow between the host application, the DLL, and the STM hardware to isolate where communication dropouts or protocol mismatches occur, then harden those interfaces with proper error handling and retry logic where needed. For the PCB, I’ll work from the photos to extract the original topology, then rebuild the layout with modern components while preserving the pin mapping and electrical characteristics of the original design. The firmware will be refined to prioritize deterministic CAN/CAN-FD timing, ensuring the DLL receives consistent responses under load. The goal is a cohesive, reliable hardware-software package that meets the J2534 spec without requiring changes to your existing host application.

@shykhAbubakar

Hi, I am ready to develop and enhance STM32-based firmware for your OBD PCB boards to integrate with J2534 DLLs and CAN/CAN-FD protocols, and provide PCB design and prototyping support, following ISO 14229 and ISO 11898 standards to ensure reliable, robust, and automotive-grade communication. Project Deliverables: STM32 firmware source code J2534 integration PCB design files Prototype Technical documentation I have a question: Q: Could you share the existing J2534 DLL implementation and the old board design photos? Over 7 years of experience in embedded systems, STM32 development, and automotive communication protocols. Similar projects I have done: STM32-Based OBD-II Firmware with J2534 Integration CAN Bus and CAN-FD Communication for Automotive Diagnostics Software I can use: STM32CubeIDE My portfolio is attached below. I am ready to start immediately and look forward to receiving your existing codebase and board photos. Thank you! Warm regards, Abubakar

@shadabkhan92

As an experienced embedded systems programmer with a keen interest in automotive diagnostics, I am well-equipped to contribute significantly to your project. Having worked on a variety of projects involving technologies closely aligned with your requirements, such as STM32 microcontrollers, PCB design, and MQTT-connected sensor networks - I am confident in my ability to refine and extend your current codebase. My agentic AI work means I can also put your AI systems where others often can't – including inside complex enterprise hardware workflows. Beyond my technical skills, I offer the unique advantage of having built AI systems that operate on edge devices. This experience will prove immensely beneficial when it comes to designing an efficient and stable system for reliable communication between the hardware and software components of your embedded devices. Moreover, my proficiency with J2534 standard paired with my understanding of CAN bus systems (including CAN-FD) gives me an edge in working on vehicle communication protocols.

@cesur135

As someone with a strong background in electronics engineering and extensive experience in embedded systems programming, I am excited to offer my services for your project. Over the years, I have honed my skills in designing, developing and enhancing firmware for various applications, including automation projects within the Waste and Water Treatment properties. This familiarity with SCADA and PLC systems has given me a deep understanding of control and monitoring systems that I believe could be invaluable for the task at hand. One key aspect of my expertise that closely aligns with your requirements is my prior work within the automotive diagnostics industry. I have successfully developed firmware for CAN bus systems similar to what you are requiring, including work with protocols like CAN-FD. With a good hand with J2534 DLLs Implementation, I am confident in my ability to optimize communication between hardware and software components, resulting in reliable, efficient systems. Candidly speaking, I not only have experience working as an embedded systems programmer but also demonstrated competence in designing PCB boards. This is highly relevant as you seek someone who can enhance existing j2534 devices by leveraging old board design photos for efficient software-hardware collaborations. I have practical knowledge using advanced design tools like E-plan P8 V2.6 and can successfully bring your prototypes to life.

@edi45

Hi, i am not really familiar with J2534 standard, but i have extensive experience in CAN development, STM32 and hardware+firmware development. Recently i develop CAN STM32 for medical device. May be i can help you with this project, let me know what you want to do with stm32 and lets get started

@ahmaddar2970

Thank you for sharing the project details. The scope is well aligned with embedded firmware work for STM32-based systems, J2534 communication, and PCB-level integration. I can contribute to refining the existing Windows-based J2534 DLL flow, improving firmware stability, and strengthening communication between the STM hardware and host applications. The mention of automotive diagnostics, CAN bus, and CAN-FD is especially relevant, as is the need to reverse-engineer or reproduce a board from photos while maintaining reliable hardware-software behavior. I would approach the work methodically: first understanding the current codebase and hardware constraints, then identifying stability bottlenecks, protocol handling issues, and any integration gaps before extending functionality. I’m ready to help move this forward with a focus on dependable firmware behavior, clean integration, and practical engineering decisions throughout the development process. Best regards.

@miguelcen64

Hello, The key part of this project is **making the STM32 firmware and J2534 DLL communicate reliably across the hardware and host software boundary**. I can help you handle this accurately and efficiently without overcomplicating the process. I have hands-on experience with **Microcontroller, Electrical Engineering, and Software Engineering**, including embedded communication work and PCB-oriented integration. For your project, I would focus on refining the existing firmware flow, tightening CAN/CAN-FD interaction with the J2534 layer, and reviewing the PCB design from the old-board photos so the final result is stable and maintainable. I can start immediately and expect to complete this within 14 days. One detail I'd like to confirm before starting: **which STM32 family and J2534 device model are currently in use, and is the PCB goal a faithful revision or a functional redesign?** Best regards, Miguel

@SkillCrafts

Your need for robust STM32 firmware to interface with existing J2534 DLLs immediately brings to mind a recent project where I optimized a similar communication layer for a diagnostic tool, resulting in a 20% reduction in latency and improved data integrity. I'm confident I can bring that same level of efficiency and reliability to your PCB firmware. My approach will involve a deep dive into the existing J2534 DLL implementation to understand its communication patterns and data structures. I'll then develop the STM32 firmware using C, leveraging the STM32Cube ecosystem for HAL/LL drivers and middleware. Unit testing and integration testing with the J2534 DLL will be paramount, focusing on error handling and compliance with the J2534 standard. I'll utilize a debugger and logic analyzer to meticulously verify signal timing and data flow. What specific hardware peripherals on the STM32 are currently being utilized for J2534 communication? Are there any particular edge cases or known issues within the existing DLL that you'd like me to prioritize addressing? I'm available for a brief call to discuss these details and how I can best contribute to your project.

@bohdan38

Hi, I’m an experienced Embedded Systems and PCB Engineer with strong hands-on experience in STM32 firmware, CAN/ETH communication, embedded C/C++, FreeRTOS/Linux, hardware bring up, and production PCB design. Your J2534/OBD project is a strong fit for my background. My relevant experience includes: - STM32F0/F1 based embedded systems using STM32CubeMX/CubeIDE, SWD/J-Link and production firmware. - CAN and other embedded communication interfaces (UART/SPI/I²C/ETH), with hardware/firmware integration and debugging. - ESP32/STM32 embedded C/C++ development, FreeRTOS and embedded Linux. - PCB design, multilayer layouts, DFM/DFT, manufacturing documentation and prototype production. - Automotive/vehicle communication oriented hardware development and reliable hardware bring up. For J2534, I would first map the existing DLL <-> STM32 transport, verify protocol/timing/error handling, then stabilize the firmware and host integration before reproducing the legacy PCB. For CAN/CAN-FD/K-Line or other vehicle interfaces, I’ll validate the electrical layer and protection requirements as part of the design. A few questions: Do you have the existing J2534 DLL source code and STM32 firmware, and what MCU/transceivers are used on the original PCB? Also, are high resolution board photos, schematics, or component markings available? I’m available to start immediately and can take the project through prototype hardware and validation. Best Regards, Bohdan A.

@alluankit01

Hi, I can support the STM32-based firmware and PCB prototype development for your OBD/J2534 hardware project. My approach will be to first review the existing Windows J2534 DLL, current firmware/codebase, STM32 target, communication flow, old board photos, CAN/CAN-FD requirements, and host application behavior. Then I’ll help refine the firmware, improve stability, and prepare the PCB design/prototype path. I can help with: * STM32 embedded firmware * J2534 communication flow * CAN / CAN-FD integration * Automotive diagnostic protocols * Firmware debugging * Host-to-device communication * Windows DLL integration support * PCB reverse layout planning from photos * Schematic and PCB design * Prototype bring-up support Deliverables: * Firmware review and improvements * STM32 communication logic updates * CAN/CAN-FD test support * PCB schematic/layout plan * Prototype PCB files * BOM and assembly notes * Debugging notes * Build/flash instructions I’ll focus on reliable hardware-software communication, stable firmware behavior, and a practical prototype path for testing with J2534 tools and automotive diagnostic workflows. Best regards Ankit