Embedded Firmware Engineer für Music Tech Wireless Audio System STM32 ESP32 Remote (Deutschland)

@AwaisChaudhry

As an experienced Embedded Firmware Engineer with a proven track record in designing and developing robust, end-to-end pipeline solutions, I am confident I can deliver the high-quality work your Music Tech project needs. My expertise lies in C and C++ programming, which will be essential for working with STM32 and ESP32 microcontrollers, as well as their related peripherals. Through my extensive experience with RTOS and RT FreeRTOS, I developed a deep understanding of real-time timing, which will be critical in ensuring the stability of your system. Moreover, I have a solid grasp of audio processing, particularly when it comes to I2S interface configuration and reliable buffering. Additionally, with my capacity to integrate and synchronize exciting tasks like memory allocation using DMA and merging ISRs. I believe that tackling connectivity challenges in real-world 2.4 GHz environments is well within my abilities, regardless of interference. Lastly, but not less important, my impeccable debugging skills combined with structured logging practices are guaranteed to expedite issue identification and resolution.

@tangramua

Hallo  ,   ich habe die Beschreibung Ihres Projekts genau analysiert und Ich kann Ihnen versichern, dass wir Ihre Bedürfnisse verstehen und uns für Ihr Projekt interessieren.  Unser Team verfügt über die erforderlichen Ressourcen, um Ihr Projekt so schnell, wie möglich zu starten und innerhalb sehr enger Fristen abzuschließen.   Nach 25 Jahren in diesem Geschäft verfügen unsere technischen Spezialisten über die Erfahrungen und Erfolgsbilanzen in C Programming, C++ Programming, Debugging, Git, Audio Processing, Embedded Systems, Signal Processing, STM32 und anderen für Ihr Projekt relevanten Technologien.   Möchten Sie mehr Informationen, wenden Sie sich bitte an unser Profil https://www.freelancer.com/u/tangramua im Folgenden Link finden Sie einige aktuelle Bewertungen und detaillierte Informationen über unser Unternehmen.   Bitte kontaktieren Sie uns über den Freelancer-Chat ODER um Ihr Projekt im Detail zu besprechen lassen Sie uns einen Termin für ein Meeting vereinbaren. Andernfalls geben Sie uns bitte eine genauere Beschreibung Ihres Projekts.   Wir würden uns auf eine konstruktive Zusammenarbeit erfreuen!   Mit freundlichen Grüßen Verkaufsabteilung Tangram Canada Inc.  

@arhamsoftltd

Hallo, Wir haben erfahrene Embedded-Firmware-Ingenieure mit solidem Know-how in ESP32, STM32, FreeRTOS und Realtime-Audio-Pipelines. Euer Projekt passt genau zu unserer Arbeit. Wir decken das gesamte Spektrum ab: Firmware-Architektur, State Machines, robuste Connectivity-Logik (Pairing, Reconnect, Recovery unter 2,4-GHz-Interferenz), I2S/DMA/Buffering sowie Telemetrie und Logging für reproduzierbare Feldtests. Latenz, Dropouts und stabiles Reconnect-Verhalten unter Live-Bedingungen sind uns vertraut. Veefügbarkeit: 40 Std./Woche, remote, klare Milestones. Relevante Projekte auf Anfrage. Danke, Nick

@hireageek

Hallo, Ich freue mich, Ihnen mein Interesse an der Stelle als Embedded Firmware Engineer für Ihr innovatives Music Tech Produkt anzubieten. Mit umfangreicher Erfahrung in Embedded C und C++ sowie der Entwicklung von Firmware für STM32 und ESP32 bin ich überzeugt, dass ich die Anforderungen Ihres Projekts ideal erfüllen kann. Mein Wissen über Realtime Timing, robustes Connectivity Management und umfassendes Debugging wird sicherstellen, dass Ihre Lösung im Live-Einsatz zuverlässig funktioniert. Ich habe erfolgreich an ähnlichen Projekten gearbeitet, die sich mit Audioverarbeitung und robuster Kommunikation in störanfälligen Umgebungen auseinandergesetzt haben. Ich bin bereit, flexibel und remote zu arbeiten, um die vorgegebenen Milestones effizient zu erreichen. Bitte lassen Sie uns in Kontakt treten, um meine Verfügbarkeit und Details zu klären. Könnten Sie mehr über die spezifischen Milestones und Anforderungen der ersten Phase des Projekts erläutern? Best regards,

@AlexandrGergel

Greetings, The main challenge here is making the full signal chain stable in real live conditions, especially with heavy 2.4 GHz noise, low latency, clean state changes, and reliable reconnect behavior. I would solve this by tightening the firmware architecture on STM32 and ESP32, adding solid telemetry and stress test methods, and validating I2S, DMA, buffering, and timing step by step so problems are measurable and repeatable. Since hardware prototypes already exist, a first demo for logging, latency measurement, reconnect flow, and controlled stress testing looks realistic within about 3 to 4 weeks, and I am available for around 15 to 20 hours per week within your planned setup; I have worked on embedded systems with STM32, ESP32, realtime control, wireless behavior, and structured debugging, and my formal background can be shared in the exact format you need for the funding check. Sincerely, Oleksandr

@Feriver

Hello, I can contribute to your Music Tech wireless audio system by developing robust embedded firmware for STM32 and ESP32. I specialize in Realtime C/C++ firmware design, state machines, DMA/I2S audio handling, buffer scheduling, and low-latency connectivity. My focus is on stable end-to-end audio pipelines, reliable pairing/reconnect logic, telemetry, and reproducible logging for field tests, ensuring performance in live, interference-prone 2.4 GHz environments. I have hands-on experience with FreeRTOS, interrupt-driven systems, structured firmware architectures, and systematic debugging. I can also support audio DSP optimization, click-free preset switching, test automation, and CI tooling, ensuring your system meets live-stage reliability requirements. Deliverables include robust firmware, reproducible test methodologies, and clear documentation for ongoing development. Clarification Questions: Are there existing audio DSP routines, or should I implement core signal processing from scratch? Should logging/telemetry prioritize real-time monitoring or post-test analysis? Thanks, Asif

@OutsourceMan

⭐⭐⭐⭐⭐ CnELIndia brings structured embedded firmware expertise for ESP32 and STM32, ensuring robust real-time timing, state machine design, and low-latency audio pipelines. Raman Ladhani provides hands-on experience in audio signal processing, I2S integration, DMA buffering, and artifact-free preset switching for stage-ready performance. Together, we implement reliable 2.4 GHz connectivity with pairing, reconnect, link monitoring, and interference recovery strategies. We design telemetry, logging, and stress-test methodologies to quantify latency, dropouts, and system stability under live conditions. Our workflow emphasizes reproducible tests, structured debugging, and systematic problem-solving with Git-based version control and CI tooling. Optional contributions include audio pipeline optimization, test automation, DSP enhancements, and hardware-level debugging. Milestone-driven, remote collaboration ensures timely delivery of an end-to-end solution suitable for touring and real-world stage environments.

@SkillCrafts

Having developed low-latency wireless audio protocols for professional guitar systems previously, I understand the critical balance between 24-bit signal integrity and millisecond-level latency required for live performance. My experience with I2S/DMA buffering on STM32 platforms and optimizing the ESP32’s radio stack for ESP-NOW or proprietary protocols ensures a robust link that avoids the interference common in 2.4GHz environments. I am excited to apply this technical background to your end-to-end signal chain project to deliver a stage-ready, high-fidelity wireless solution for guitarists and bassists. I will implement a dual-MCU architecture leveraging the STM32’s high-precision DMA-driven I2S peripherals to handle real-time audio processing without CPU bottlenecks, ensuring zero-latency DSP throughput. For the wireless transport layer, I will utilize the ESP32’s low-level radio stack, likely implementing a custom protocol to bypass standard Wi-Fi overhead and reach sub-5ms end-to-end latency. This approach includes developing a circular buffering strategy with Forward Error Correction (FEC) to maintain signal integrity in crowded RF environments like live stages. Furthermore, I’ll focus on optimizing the power-duty cycle to maximize battery life without sacrificing the high dynamic range required for active guitar pickups. To ensure the architecture meets professional standards, are you aiming for a specific frequency band such as 2.4GHz or 5.8GHz, and what is your absolute maximum target for end-to-end latency? I would also be interested to hear if you have already selected specific ADC/DAC hardware or if I should recommend components that offer the best SNR for this specific signal chain. I’m happy to hop on a quick call or chat here to review your current hardware schematics and align on a development timeline that gets your prototype stage-ready.

@cesur135

As an experienced embedded firmware engineer with a strong focus on industrial automation, I believe I have the essential skills and knowledge to successfully undertake your Music Tech Wireless Audio System project. Having designed and implemented systems that require robust connectivity, real-time processing, and reliable operation under unpredictable environments, I know how to ensure your product performs exceptionally in heavily disturbed 2.4GHz spaces. With an extensive background in using STM32 and ESP32 platforms, including their peripherals, interrupts, DMA, confess a deep understanding of embedded C and C++, enabling me to swiftly create efficient, structured firmware designs for your system. Additionally, my proficiency in dealing with RTOS or FreeRTOS ensures I can effectively manage latency and jitter issues, significantly enhancing your product's reliability during live performances.

@abdf2010

Hey, I noticed your project, Embedded Firmware Engineer für Music Tech project and believe I can help. My work in C Programming has prepared me well for this kind of project. Looking forward to hearing your thoughts.

@juanjosec63

Hello, I’m excited about the opportunity to contribute to the development of your music tech system and its end-to-end embedded audio pipeline. With strong experience in embedded C/C++, real-time firmware design, and hardware platforms such as ESP32 and STM32, I can help build reliable connectivity, stable state management, and precise timing required for live audio environments. I focus on robust firmware architecture, telemetry, and reproducible testing so latency, dropouts, and reconnection behavior can be measured and optimized for stage-ready performance. You can expect structured collaboration, clear documentation, and dependable progress toward a stable, tour-ready system across the planned milestones. Best regards, Juan.

@technologybeach

As an experienced Full Stack Developer and Software Engineer, I believe I bring a unique skill set to the table that aligns perfectly with your project. Throughout my career, I've been entrusted with the development of robust backend systems and the creation of seamless user experiences- two key requirements for your wireless audio technology. My ability to blend creativity with problem-solving, and offer end-to-end solutions makes me a suitable candidate for your endeavors. In terms of language proficiency and low-level programming, my expertise in C Programming perfectly matches the need for strucutred firmware design associated with projects like yours. Additionally, my understanding of Realtime Operating Systems (RTOS) and experience working with interrupt-driven peripherals gives me an edge in managing latencies and maintaining high-performance in distributed networks. As someone who comprehends jitter, I believe I am well-equipped to ensure maximum efficiency in your audio processing chain.

@Intelliglance786

Hi, I’m an Automation & Embedded Systems Engineer with 10+ years of experience developing firmware for STM32, ESP32, and ARM-based systems. I have designed 60+ custom PCBs and built embedded firmware using FreeRTOS, DMA, timers, and high-speed interfaces such as CAN, RS-485, and Ethernet. I have delivered wireless IoT and realtime control systems where deterministic timing, stable connectivity, and fast recovery logic were essential. I am available ~15–20 hours/week for long-term work; I hold a B.Sc. in Electrical & Electronic Engineering (2016) and can share similar STM32/ESP32 realtime projects. Approach ✅ I will review the STM32/ESP32 firmware architecture and organize tasks using FreeRTOS, deterministic state machines, and timer-driven scheduling for stable realtime behavior. ✅ I will implement a robust connectivity layer including pairing, link monitoring, interference handling, and automatic reconnect strategies for dense 2.4 GHz environments. ✅ I will build a stable audio pipeline using I2S with DMA double buffering, controlled scheduling, and latency/jitter monitoring. Questions ✅ What wireless protocol currently carries the audio stream (Wi-Fi, ESP-NOW, BLE, or custom)? ✅ What latency and dropout metrics have you measured during tests in dense 2.4 GHz environments? Best,

@zaman342003

Hallo, Euer Projekt im Bereich Music Tech mit Echtzeit-Audio, ESP32/STM32 und stabiler 2,4 GHz Connectivity klingt sehr spannend. Genau an solchen embedded Systemen mit zuverlässiger Firmware-Architektur und Realtime-Verhalten arbeite ich regelmäßig. Ich habe Erfahrung mit Embedded C/C++, strukturiertem Firmware Design, State Machines und Realtime Systemen sowie mit Hardware-naher Entwicklung auf ESP32/STM32 Plattformen. Besonders wichtig ist bei solchen Systemen eine stabile End-to-End Pipeline, sauberes Timing und reproduzierbare Tests – genau darauf würde ich den Fokus legen. Mein Ansatz wäre: • Robuste Firmware Architektur mit klaren State Machines • Stabiler Pairing / Reconnect / Link-Monitoring Mechanismus • Realtime Audio Pipeline (I2S, DMA, Buffering, Scheduling) mit minimaler Latenz • Telemetry, Logging und Messmethodik für Dropouts, Latenz und Stress-Tests • Tools für reproduzierbare Debugging- und Feldtests Ich arbeite strukturiert mit Git, sauberer Dokumentation und klaren Milestones, was bei langfristigen Embedded-Projekten entscheidend ist. Ich kann 15–20 Stunden pro Woche remote arbeiten und bin an einer langfristigen Zusammenarbeit interessiert. Könnt ihr kurz sagen, welches RTOS Setup (z. B. FreeRTOS) ihr aktuell verwendet und wie eure aktuelle Audio-Pipeline Architektur aufgebaut ist? Viele Grüße.