Recoding RX/TX PCBA Firmware

@MuhammadUzair16

Hi I am an embedded systems engineer with over 16 years of experience. I have extensive experience debugging low-level C/C++ firmware, serial communication, timing and buffering faults, packet integrity, handshakes, and state-machine issues on custom PCBs. I can review the RX/TX codebase, isolate the link failures, and refactor or rewrite the affected modules while keeping the existing hardware unchanged. The work will include repeatable build instructions, commented and organised source, flash-ready images for both boards, and a concise report covering the faults, fixes, and loop-back, stress, and long-duration reliability tests performed. Before starting, please confirm whether the editable source code is available in addition to the firmware binaries, and share the MCU part number, communication protocol, development toolchain, schematics or pinout, and how the boards can be provided for testing. If only binary images exist, the scope and feasibility will need to be reviewed first. I can also support follow-on firmware improvements and production-readiness testing if required. Please contact me to discuss details.

@engrusmanfaiz

I have extensive experience debugging embedded firmware and communication protocols on custom hardware. I can analyze your RX/TX firmware, identify timing, buffering, and state-machine issues, then refactor the code for stable, reliable communication without requiring hardware changes. You will receive clean, well-documented source code, compiled firmware for both boards, a detailed bug-fix report, and build instructions so you can maintain the project confidently.

@tshibsamuel477

Hi there, I read your offer carefully and understand that you need the firmware for a matched RX/TX PCBA pair debugged and improved so the boards communicate reliably again. I can review the existing firmware, identify protocol, timing, buffering, handshake, packet, and state-machine issues, then refactor or rewrite the affected modules while keeping compatibility with the current hardware. I can provide commented source code, compiled images for RX and TX, build instructions, and a short bug-fix/reliability test report. My experience with embedded C/C++, custom boards, UART/SPI/I2C-style communication, packet protocols, timing issues, firmware debugging, and long-duration stability testing fits this project well. Just send me a message and we can review the current firmware and toolchain. Best regards, Samuel Tshibangu

@Adrianopl

Hello, Can you share more details about the MCU used in your project? is there a separeted radio chip or its bult-in? Which IDE/compiler are used to develop the firmware? I would like to take a look at the schematic if possible. Can you give me details about the failures that you have had using the RX TX pair?

@hayat38402

Hi, how are you doing? I went through your project description and I can help you in your project. your project requirements perfectly match my expertise. We are a team of Electrical and Electronics engineers, we have successfully completed 1000+ Projects for multiple regular clients from OMAN, UK, USA, Australia, Canada, France, Germany, Lebanon and many other countries. We are providing our services in following areas:  Antenna Design (CST, HFSS)  Embedded C Programming.  VHDL/Verilog, Quartus/Vivado, LabVIEW/ Multisim/PSPICE/VLSI  MATLAB/SIMULINK  Network Simulator NS2/NS3  Microcontroller like Arduino, Raspberry Pi, FPGA, AVR, PIC, STM32 and ESP32.  IDEs like Keil MDK V5, ATmel studio and MPLab XC8.  PLCs / SCADA  PCB Designing Proteus, Eagle, KiCAD and Altium  IOT Technologies like Ethernet, GSM GPRS.  HTTP Restful APIs connection for IOT Communications. Also, we have good command over report writing, I can show you many samples of our previous reports. Kindly consider us for your project and text me so that we can further discuss specifically about your project's main goals and requirements.

@tetianam8

⭐⭐⭐⭐⭐ I’ve worked extensively on debugging embedded firmware for custom RX/TX systems where communication reliability was the primary issue. From your description, this appears to be a firmware-level problem involving protocol handling, timing, buffering, or state-machine synchronization rather than hardware. I can review your existing source and binaries, identify the root causes of packet loss or unstable links, refactor the communication stack where needed, and thoroughly validate the system with long-duration stress testing. Deliverables will include: • Clean, well-commented source code for both RX and TX • Ready-to-flash firmware images • A report documenting each bug, the implemented fixes, and validation results • Build instructions so you can maintain the project independently I have experience with embedded C/C++, UART, SPI, I2C, RF communication protocols, interrupt-driven firmware, RTOS and bare-metal systems, and custom wireless products. My focus is always on producing stable, maintainable firmware with reliable handshaking, robust error recovery, and consistent long-term operation. I'm available to start immediately and can begin by reviewing the existing firmware architecture to identify the communication faults before implementing targeted fixes.

@shadabkhan92

As an accomplished and highly skilled electrical engineer specializing in firmware development for microcontrollers like Arduino, I am confident that I can successfully recode and optimize your RX/TX PCBA's buggy firmware. With a strong background in low-level embedded C/C++ programming and a proven track record debugging complex communication issues similar to what you've described, this project appears to be a natural fit for my expertise. Moreover, I have extensive experience improving the reliability and performance of systems within the IoT realm, which aligns perfectly with your requirement of raising system reliability as far as practical. This has included refinements to serial traffic handling, timing, buffering, and state-machine logic—all key areas that need addressing in your current firmware setup. Of particular value, is my ability to effectively document my work. You can expect to receive fully commented and organized source code along with compiled images for both the RX and TX units ready for flashing. I will also provide a detailed report on the challenges identified and tackled during the process along with any reliability tests that were run.

@jeanpatrickr8

Hello! I am interested in your project and confident I can deliver excellent results. Let's discuss your requirements so I can start immediately.

@krupnovdenis

Hello! We can clean up and stabilise the firmware for your RX/TX boards and deliver a reliable build. 1. Can you share the existing firmware binaries and source files? 2. Which toolchain or build setup should we match for the hand-off? — About us We are dZENcode – a full-cycle IT company for digital product development: from design and programming to integrations and post-release support. We build projects from scratch and also work on existing solutions that need further development, improvements, or technical support. You can find detailed information about our services and rates on our official website: https://dzencode.com. Please review it – after that, we can discuss the details and agree on the next step. ⚠️ After clarifying all details, we will define the scope, the suitable cooperation format – task-based, outsourcing, or outstaffing – and the final cost. Projects are guaranteed to reach release with us: • 10+ years providing IT services; • 90+ in-house specialists; • 250+ public reviews since 2015; • We support products under SLA after launch; • We work under NDA and a company contract!

@alluankit01

Hi, I can debug, refactor, and recode the RX/TX PCBA firmware so the two boards communicate reliably with stable handshakes, clean packet handling, proper buffering, and consistent uptime. The best solution is to first review the existing firmware, protocol flow, timing logic, serial traffic, buffers, state machines, firmware bins/source, toolchain, and any failure symptoms you already observed. I’ll then isolate the communication bugs, clean up the code, test RX/TX behavior, and prepare compiled firmware images for both boards. I’m comfortable with embedded C/C++, microcontrollers, Arduino-style and low-level firmware, serial communication, packet protocols, timing issues, buffering, state-machine debugging, firmware refactoring, and board bring-up support. Deliverables include: * Cleaned and commented source code * RX firmware image * TX firmware image * Communication bug fixes * Handshake and packet reliability improvements * Loop-back/stress/long-run test notes * Build reproduction guide * Short bug/fix report * Flashing guidance I’ll focus on making the current boards work reliably without requiring hardware changes. Best regards Ankit

@nemanjam61

Hi there, I’m Nemanja from Serbia. I can debug and recode the RX/TX firmware with the main focus on stabilizing the communication protocol and making the existing boards communicate reliably without hardware changes. I’ll trace the serial communication, timing, buffering, packet handling, handshakes, and state-machine logic to identify the faults causing dropped, corrupted, or unstable communication. Where necessary, I’ll refactor or replace problematic firmware modules while preserving compatibility with the current PCBA hardware and toolchain. I’ll validate the fix with loopback, stress, repeated communication, and longer-duration tests, then provide organized source code, compiled RX/TX images, and a concise bug/fix report. My experience includes C, C++, Embedded C++, microcontrollers, Arduino, firmware development, debugging, and embedded communication. I can start by reviewing the existing firmware binaries, source code, MCU details, and communication protocol. Looking forward to working together.

@durgesh8527

With over a decade of experience crafting clean and performant code, I am confident in my ability to address your RX/TX PCBA firmware issues. Having built a strong foundation as a full-stack developer, my core expertise also includes low-level C programming — ideal for this project. Delivering reliability is at the heart of my work and dovetails perfectly with your project objectives. By comprehensively understanding your business requirements, I can bring a meticulous attention to detail to ensuring error-free packet communication, solid handshakes, and consistent uptime.

@shenglin0617

Hi, This project fits my background very well. I specialize in embedded firmware debugging rather than simply adding new features. I've worked extensively on STM32, ESP32, nRF52 and other MCU platforms, diagnosing communication failures caused by timing, buffering, interrupt handling, state-machine logic and protocol implementation. My approach is to reproduce the issue, trace the communication flow, identify the root cause, and improve the firmware for long-term stability instead of applying temporary fixes. I'll provide clean, well-commented source code, flash-ready binaries for both RX and TX, a clear report of the bugs found and corrected, and build instructions so you can maintain the project independently. I'm comfortable working from existing source or firmware images and can start immediately. I look forward to helping make your RX-TX link reliable under continuous operation. Best regards, Shenglin Gu.

@jtm245

This is well aligned with my background. I’ve spent a significant part of my career working on embedded systems where reliable communication, timing and recovery behaviour matter more than simply getting a packet through once. I’m comfortable working at the level of buffers, interrupts, state machines, framing, retries and fault recovery, and I can work through an unfamiliar codebase methodically rather than immediately replacing everything. Where a rewrite is justified, I’ll keep it controlled and maintainable rather than introducing another layer of complexity. My approach would be to reproduce the failure modes, instrument the RX and TX paths, isolate the root causes and then validate the fixes under sustained traffic and fault conditions. The aim is not just to remove the visible bugs, but to leave the system predictable when packets are lost, delayed, duplicated or corrupted. I can provide clean source, reproducible builds, flashable images and a concise engineering report covering the faults found, fixes made and testing performed. I’m also happy to join a video call to review the hardware, toolchain and known symptoms before starting, and to walk you through the final build and maintenance process afterwards.

@ska234

Hi. To get the RX/TX link stable again, I’d start by tracing the serial protocol path in the firmware, isolating timing, buffering, and state-machine faults, then tightening the handshake and packet handling logic. I can refactor or rewrite the comms layer in low-level embedded C/C++ so the boards load cleanly on the current hardware with no electrical changes. I’ll validate the fix with loopback checks, stress runs, and long-duration uptime tests, then leave the codebase organized and fully commented for maintenance. As a Senior Software Engineer, I have mastered embedded C/C++, serial protocol debugging, firmware refactoring, and reliability testing, and have strong experience in custom PCB firmware and comms bring-up. I am sure I can deliver high-quality results within a focused timeline once I review the current bins and toolchain. Let’s get in touch and discuss more. Thanks.

@Abror86

Hi, "STABLE RX/TX FIRMWARE COMMUNICATION" — you need the boards to communicate reliably instead of chasing random protocol failures. I'll start by tracing the communication flow, checking timing, buffering, retries, and state-machine logic before changing the code. Once the root cause is confirmed, I'll refactor only what's needed, then validate it with long-run stress tests, packet verification, and loop-back testing. You'll receive clean source code, flash-ready firmware, and a clear report of every fix. Can you provide the MCU model, current toolchain, and whether you have the source code or only the firmware binaries? Looking forward to working with you.

@fatema0013

Hello, I'm a Mechatronics and Robotics Engineer with 4+ years of experience in embedded systems, firmware development, and debugging communication protocols. I have worked with C/C++, UART, SPI, I2C, state machines, timing-critical firmware, and microcontroller-based systems, focusing on identifying root causes of communication failures and improving system reliability. For this project, I can analyze your existing firmware, isolate the protocol issues, refactor or rewrite the communication layer where necessary, and deliver stable RX/TX firmware that compiles and runs on your existing hardware without electrical modifications. I'll also provide clean, well-commented source code, compiled binaries, a summary of bugs and fixes, and guidance for rebuilding the project in your toolchain. One quick question: Which microcontroller and development environment/toolchain are the RX and TX boards based on (e.g., STM32, ESP32, AVR, PIC, Keil, STM32CubeIDE, MPLAB, etc.)? I look forward to working with you.

@Kashifscode

Hello! Your RX-TX PCBA firmware issue requires deep debugging of the communication stack, focusing on protocol reliability rather than hardware changes. I have experience with embedded firmware development, C/C++, serial communication debugging, timing analysis, buffering optimization, and state-machine refactoring, and I can inspect the existing firmware, identify packet, handshake, and synchronization failures, then implement stable communication logic with improved error handling and recovery mechanisms. I’ll provide clean documented source code, flash-ready RX/TX builds, validation through stress and long-duration communication tests, and build documentation for future maintenance. I’d be happy to discuss the project further.

@jb095

As an experienced embedded systems engineer and firmware developer with over a decade of professional experience, I am confident that I can take on your project to recode the RX/TX PCBA pair. The complexity that lies within embedded systems and firmware development is my bread and butter. Over the years, I have successfully debugged communication issues on various custom boards using several tools including nRF5 SDK / nRF Connect SDK and SEGGER Embedded Studio + J-Link debugging, which I believe aligns perfectly with your project requirements. Additionally, my proficiency in low-level C/C++, BLE GATT, LTE AT commanders, and custom wireless protocols will be of immense value as we navigate through refactoring, rewriting or replacing modules to achieve a cleaner and more reliable codebase for your boards. Furthermore, my expertise in high-speed PCB design guarantees that signal integrity issues that may disrupt the flawless communication between your boards will be greatly minimized if not fully eliminated. My commitment to quality and reliability extends beyond the completion of the project. I will provide you with fully commented and organized source code, compiled images for both RX and TX ready for flashing, a comprehensive report outlining bugs found, fixes made, and any reliability tests run alongside guidance on reproducing the build in your toolchain.