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I have an ESP32-based board that carries three biomedical front-ends: Maxim’s MAX86140, Melexis’ MLX90632, and TI’s ADS1293. I need production-ready firmware that brings all three devices up, streams their data reliably, and leaves enough modularity for future algorithm work. Core expectations • Initialise each sensor from power-on through to continuous-conversion mode, following the latest datasheet recommendations for timing, gain, and power management. • Acquire and time-stamp the raw data in a FreeRTOS task structure, synchronising the optical, temperature, and ECG channels so they can later be fused. • Push the data out over UART initially; the code should be organised so I can swap the transport to BLE or Wi-Fi without touching the acquisition layer. • Provide clear, well-commented C/C++ code that builds under ESP-IDF (v5 preferred), along with a short markdown file showing build steps and the register maps you finally used. Acceptance The firmware should compile without warnings, boot on my hardware, and show consistent, human-readable streams from all three sensors for at least 30 minutes with no buffer overruns.
Projekt-ID: 40081314
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Hi Deliverables: Sensor Initialization: Implement firmware to initialize each sensor from power-on to continuous conversion mode, per datasheet specifications. Data Acquisition: Utilize FreeRTOS to acquire, timestamp, and synchronize data from optical, temperature, and ECG channels. Data Streaming: Stream data via UART initially, with provisions for easy transition to BLE or Wi-Fi. Documentation: Provide clear, well-commented C/C++ code, alongside build instructions and register maps used.
$200 USD in 7 Tagen
4,1
4,1
10 Freelancer bieten im Durchschnitt $120 USD für diesen Auftrag

Hi, I’d be a strong fit for this role. I’m an embedded systems engineer with ~6 years of hands-on experience across healthcare devices, robotics, and industrial automation. I’ve taken multiple products from concept through prototyping and testing, with a strong focus on reliable hardware–firmware integration. Relevant past projects include: * Custom UAV flight controller and proprietary drone platforms * Bespoke underwater ROV (hardware + control firmware) * Laser land levelling system * Custom CNC control system * Embedded audio playback systems * Health and wearable device prototypes I’d be happy to discuss your requirements and how I can help move this forward. Please feel free to send a DM.
$250 USD in 5 Tagen
5,8
5,8

As a seasoned full-stack developer with a specific proficiency in C programming, I am well-equipped to handle the intricacies your ESP32 Health Sensor Firmware demands. Seven years of expertise building robust web applications has honed my ability to deliver high-quality work that aligns precisely with clients' needs while optimizing for scalability and performance – major imperatives for your project. Your firmware's core expectations align perfectly with what I can offer. I am confident in my ability to initialise each sensor from power-on through continuous-conversion mode as recommended by their latest datasheets, and time-stamp the raw data, synchronising the optical, temperature, and ECG channels for future fusion. The competence extends to pushing data over UART initially and ensuring modularity to switch between BLE and Wi-Fi without compromising on the acquisition layer – an imperative clearly laid out in your project description. With me on board, expect nothing short of excellence. I assure you a firmware that compiles flawlessly without warnings, boots perfectly on your hardware and delivers consistent human-readable streams from all three sensors for at least 30 minutes sans any buffer overrunLet's collaborate on a project that will truly make a difference!
$250 USD in 7 Tagen
3,0
3,0

Hello, ESP32 Health Sensor Firmware Development is a project I can approach with a clear, engineering-driven mindset. I’ve worked on similar systems before and I understand how to design a clean, reliable solution from start to finish. From your description, here’s how I would approach it: 1. Clarify the exact data sources, constraints, and required outputs. 2. Build a stable backend workflow with proper logging, retries, and fault tolerance. 3. Implement clean, maintainable modules for the three sensor initializations, data capture in FreeRTOS tasks, and a transport-agnostic interface that starts with UART but is ready for BLE or Wi‑Fi. 4. Make sure the system is fully tested, predictable, and easy for you to operate long-term. I will initialize each sensor from power-on through continuous-conversion, timing, gain, and power management per datasheets. Data will be time-stamped and aligned across optical, temperature, and ECG channels in a FreeRTOS task, enabling later fusion. Data will be streamed over UART initially, with a clean interface so you can swap to BLE or Wi‑Fi without touching the acquisition layer. The code will be ESP-IDF v5 friendly with clear, well-commented C/C++, plus a short Markdown build guide and a register map appendix. If you’re open to it, I’d like to ask one quick question so I can tailor the solution more precisely: Would you prefer the UART stream to be CSV, binary with headers, or a custom framing, and do you have a preferred timestamp refere
$125 USD in 3 Tagen
1,4
1,4

Hello! I am prepared to take on the ESP32 Health Sensor Firmware Development project. With expertise in Electronics, Signal Processing, and Biomedical Engineering, I will develop production-ready firmware for your ESP32-based board, integrating Maxim’s MAX86140, Melexis’ MLX90632, and TI’s ADS1293 sensors. Using ESP-IDF (v5), I will ensure proper initialization, data acquisition, and reliable data streaming over UART. The code will be modular for future algorithm integration, with clear comments and build instructions. Let's collaborate to bring this project to life! What are your preferred project timelines?
$30 USD in 2 Tagen
0,0
0,0

Hi, I’m Mst Habiba Hasan, I am a Senior Full-Stack Developer with more than 10 years of experience. I can help you with: — Website development — Mobile app development — Web app development — Backend development — AI and Machine Learning development — Maintenance of existing projects — UX/UI design — Browser extensions — DevOps — Solution Architecture — Consulting — MVP development Technologies I've worked with include but are not limited to: * Python/ Django * ReactJS / React Native (including React Native Web) / Expo / Express / Redux / NextJS * Javascript / Typescript / Flow types * NodeJS / Angular / Vue.js * MongoDB / SQL (MySQL / MariaDB / PostgreSQL) / Redis * OAuth2 / Keycloak / Auth0 / Cognito * Kubernetes / Helm / Docker / Ansible / Terraform / Amplify / Firebase * AWS / Azure / GCP / on premises * RESTful / GraphQL / OpenTracing / AMQP (RabbitMQ) Contact me today to get started! I’m excited to collaborate and bring your vision to life. Best regards, Mst Habiba Hasan
$40 USD in 4 Tagen
0,0
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Hello Inotronix, I see that you are in need of firmware development for your ESP32-based board with biomedical front-ends. Could you please provide more details on the specific requirements and functionalities you are looking to achieve with this firmware? I am confident in my ability to efficiently handle the development of the firmware for your ESP32 board. By following the latest datasheet recommendations and utilizing FreeRTOS task structure, I will ensure the reliable streaming of data from all three sensors while maintaining modularity for future algorithm work. Core Deliverables: - Initialisation of each sensor following datasheet recommendations - Acquisition and time-stamping of raw data in a synchronised manner - Data transmission over UART with flexibility for future transport options - Well-commented C/C++ code that builds under ESP-IDF Expertise & Portfolio: I'll share my portfolio with you in the DM. Kindly ping me there. My experience with firmware development for embedded systems ensures quality, consistency, and smooth delivery of the project. I'd be happy to discuss your project further and answer any questions. Best regards, Malaika
$140 USD in 7 Tagen
0,0
0,0

✅Okay, I got what you want exactly. ❤️I am a professional engineer Embedded Engineer & Firmware Engineer with over 10 years of experience, providing ESP32 firmware development, sensor integration, BLE/Wi-Fi communication, low-power design, and cloud-ready data handling. In my opinion, the best approach is a clean, modular ESP firmware that reliably reads health sensor data, filters and validates it in real time, and securely transmits it over BLE/Wi-Fi. I’d also design it with OTA updates and power optimization in mind so the device is stable, scalable, and easy to maintain long term. This project is very similar to my previous works. I previously worked on ESP32-based health and environmental monitoring devices while consulting in San Jose, California, where I handled sensor drivers (I2C/SPI), FreeRTOS tasks, and BLE data services. I also implemented secure Wi-Fi data upload and OTA firmware updates used in field-deployed devices. The most important skill for this project is robust ESP firmware architecture, especially task scheduling and sensor reliability. I solve this by using FreeRTOS-based separation for sensing, communication, and power management, ensuring stability and low latency. Via private chatting or meeting, I will provide the creative idea and good tech solution for your project and I want to discuss about the budget and timeline in detail.
$100 USD in 5 Tagen
0,0
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Hi there, I can deliver production-ready ESP32 firmware that reliably brings up and streams data from the MAX86140, MLX90632, and ADS1293, structured for long-term algorithm and transport expansion. I have strong hands-on experience with ESP-IDF (including v5), FreeRTOS task design, multi-sensor synchronization, and biomedical/precision sensor bring-up at the register level. I’m confident we can deliver a stable, secure, and production-ready system on time. Looking forward to hearing from you! Best regards, truong
$30 USD in 3 Tagen
0,0
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Hi ✅Inotronix✅, I read through your project description and it sounds like a great opportunity — I’d love to help you build robust, production-ready firmware for your ESP32 health sensor board. From what I understand, your board combines three biomedical front ends (MAX86140, MLX90632, and ADS1293), and you need firmware that initializes each sensor, acquires synchronized data, timestamps it properly, and streams it reliably over a transport layer that can evolve in the future (UART → BLE/Wi-Fi). ✨✨✨I’ve been developing embedded firmware and ESP32-based solutions for years, working directly with sensors, real-time task scheduling, and modular firmware architectures that are easy to maintain and extend. I’m comfortable with ESP-IDF (including FreeRTOS), I2C/SPI peripherals, and writing clean, well-commented C/C++ code that compiles without warnings. I’ve also designed firmware where the acquisition layer is decoupled from the transport layer — exactly what you’re looking for. ⚡⚡⚡Here’s how I’d approach your project: -Sensor Initialization -Data Acquisition Tasks -Modular Architecture -Reliable Streaming -Documentation ❓A couple quick questions so I can refine my estimate: -Do you have preferred sampling rates and buffer sizes in mind for each sensor? -Should we include any basic signal filtering or calibration on the MCU side now, or leave that for later algorithm work? ✅Looking forward to your feedback and happy to get started soon!
$30 USD in 1 Tag
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