Sleep Apnea Device & Webapp

@Mahihassi

As an electrical engineering graduate specialized in embedded systems, I have rich experience turning prototypes into production-ready firmware - just like your sleep apnea device! My proficiency in several microcontrollers such as STM32 and ESP32 and fluency in C/C++ allows me to not only rewrite cluttered test codes but deliver clean, well-documented ones that would sample the stretch sensor for breathing rhythm logging, poll the accelerometer for body position detection, time-stamp and buffer all readings locally, and most importantly stream them over Wi-Fi or Bluetooth LE with JSON packets. My expertise also extends to building lightweight web apps where the collected data will be shown real-time in a responsive dashboard using technologies adaptable to your preferences like React or Vue. User experience will be enhanced with audio/visual alerts mirroring the on-body feedback - all within a quick response rate of 500ms, guaranteeing no lost packets during an 8-hour overnight test.

@KESHAVINFOTECH

Hi There, 1.I have a functioning breadboard prototype that uses an ESP32 (programm... ==> We got your project details and its great that you already have a working hardware prototype. We can definitely help turn your test code and concept into a polished product. We have worked on similar sensor-based health tracking projects before. One of them had a really interesting feature that used the users movement data to intelligently schedule alarms for the lightest phase of their sleep cycle, making waking up much easier. We will focus on rewriting the ESP32 firmware to be clean and efficient. Our plan is to properly handle the sensor sampling, the 20-second supine timer logic for the vibration motor, and then buffer and stream all this data reliably over Wi-Fi as JSON packets. For the front-end, we will build a simple and responsive web app that shows this data in real time with the audio and visual alerts you mentioned. ## Queries : 1. If the Wi-Fi connection is lost temporarily, should the ESP32 device try to store all the sensor readings and send them in a large batch once reconnected? ## Initial Project Structure : - Live Dashboard - Device Connection Status - Session Data View We use advanced AI tools (Cursor, Claude, ChatGPT) to speed up coding and reduce manual work hours. We pass these time-savings to you, providing a high-quality app at a very competitive price. Waiting for your reply. :-) Regards, Ghanu & Samir. KESHAV INFOTECH

@markoa7

Having a wide range of expertise in electronics and microcontroller programming, I understand the challenges and nuances associated with developing reliable firmware for your Sleep Apnea Device. I have successfully developed projects using various MCUs like ESP32, STM32, NXP and am well-versed in programming them through Arduino-style C++ that ensures clean and well-documented code - a factor that will be pivotal for your project. In addition to synthesizing the software aspect, I equally value a streamlined front-end experience. Having built web apps using popular frameworks such as React, Vue and plain JS, I can assure you of a secure and responsive interface that will effectively communicate the live data feed. Moreover, my experienced with implementing audio/visual alerts in the browser makes me well-suited for the task of triggering exactly what you are looking for upon 'vibration event'. Furthermore, since timely deliverance and bidirectional communication are key elements for successful completion of any project, I consider it important to demonstrate my proficiency with Git by supplying all source code, pinouts and build instructions in a public Git repo. These, along with my vast knowledge on wireless technologies (Bluetooth LE/Wi-Fi) used for reliable data streaming align perfectly with your stated requirements. It'll be a privilege to help turn your successful breadboard prototype into a market-ready solution.

@jimsufficiency

I can take this from prototype to production cleanly. I’ll refactor the ESP32 firmware into well-structured, documented Arduino-style C/C++ with deterministic timing for supine detection, reliable buffering, and robust Wi-Fi/BLE streaming in JSON. I’ve done similar work on wearable sensing, real-time telemetry devices, and ESP32 production firmware, where long-duration stability and timing accuracy were critical. On the front end, I’ll build a lightweight real-time web dashboard (React or plain JS, based on speed and simplicity) that visualizes breathing and posture live, mirrors vibration events with audio/visual alerts, and persists session data across refreshes. Relevant experience includes: • ESP32-based sensor devices with Wi-Fi/BLE streaming • Real-time dashboards for embedded telemetry • Long-running (8–24 hr) embedded data logging systems • Clean handoff from breadboard firmware to production-ready codebases Happy to start by reviewing your current firmware and sensor choices, then locking the data schema and timing model before implementation.

@khurshid040462

Hi there, I’m excited about the opportunity to transform your sleep apnea device and web app into a polished product. With a strong foundation in Arduino firmware development and web technologies, I can clean up your ESP32 code to ensure it's efficient and well-documented. My approach will handle sensor data efficiently, accurately detect body positions, and trigger the vibration motor promptly. Additionally, I will develop a responsive web app using Vue.js that will present real-time data, alert users of important events, and safely store session data for easy access. I’ll also ensure compliance with your acceptance criteria, particularly maintaining a reliable connection during extended use. I estimate this project can be completed in about 15 days. Let’s discuss your needs further!

@mehranriaz0

Greetings, I see you're looking to refine your sleep apnea device by streamlining the firmware and creating a web app for user interaction. My approach would be to first clean up the existing firmware, ensuring it's efficient and well-documented. I’d focus on accurately sampling the stretch sensor and accelerometer, ensuring that the motor activates without delay once the user has been supine for 20 seconds. For the web app, I would develop a responsive platform that displays real-time data and alerts, using a framework like React or Vue for a smooth user experience. This way, users can easily monitor their sleep patterns and receive timely feedback. With my experience in C programming, JavaScript, and web development, I'm confident I can deliver a reliable solution tailored to your needs. Best regards, Mehran Riaz

@GameOfWords

Sleep Apnea Device & Webapp I’m a full-stack software engineer with expertise in React, Node.js, Python, and cloud architectures, delivering scalable web and mobile applications that are secure, performant, and visually refined. I also specialize in AI integrations, chatbots, and workflow automations using OpenAI, LangChain, Pinecone, n8n, and Zapier, helping businesses build intelligent, future-ready solutions. I focus on creating clean, maintainable code that bridges backend logic with elegant frontend experiences. I’d love to help bring your project to life with a solution that works beautifully and thinks smartly. To review my samples and achievements, please visit:https://www.freelancer.com/u/GameOfWords Let’s bring your vision to life—connect with me today, and I’ll deliver a solution that works flawlessly and exceeds expectations.

@piyushg200

⚠️ If you’re not happy, you don’t pay ⚠️ Hello, I guarantee a seamless transition from cluttered test code to production-ready firmware for your sleep monitoring system. Using clean, documented C/C++ Arduino-style code, I will optimize ESP32 firmware to log breathing rhythm, detect body positions, and trigger the vibration motor efficiently. Our tech stack includes streaming JSON packets over Wi-Fi and developing a responsive web app (Vue.js) for real-time data display and audio/visual alerts. With my expertise in optimizing firmware and developing real-time web applications, I am confident in meeting your criteria: 1. Motor trigger within 1 s of the threshold. 2. Zero packet drops during tests. 3. Sub-500 ms dashboard updates with immediate alerts. 4. Complete source code on a shared Git repo. What technical challenges should we address first? Let's schedule a call to streamline the process. Best regards, Piyush Gupta Senior Web Developer | Firmware Expert

@krisk63

Hi there, I'm Kristopher Kramer from McKinney, Texas. I’ve worked on similar projects before, and as a senior full-stack and AI engineer, I have the proven experience needed to deliver this successfully, so I have strong experience in JSON, Web Development, C Programming, Vue.js, Microcontroller, JavaScript, Arduino and Electronics. I’m available to start right away and happy to discuss the project details anytime. Looking forward to speaking with you soon. Best regards, Kristopher Kramer

@vanhuy19892011

Dear . Thanks for sharing your project! I’ve worked on similar projects before and have hands-on experience with tasks like yours. I’ve got a bunch of hands-on experience with Electronics, Vue.js, Arduino, JSON, JavaScript, Microcontroller, C Programming and Web Development, so I’m comfortable handling everything you’re looking for. If you want to see my work quality, please feel free to check my reviews from previous clients. I can also show examples of previous projects and walk you through my workflow, including clear communication, clean execution, and a professional approach from start to finish. Feel free to message me anytime. I’d be happy to discuss your project and get started. Best Regards, Huy.

@ahmaddar2970

Hi there, I’ve reviewed your Sleep Apnea device project and I can turn your ESP32 prototype into production-grade firmware plus a responsive web dashboard. I will deliver clean, well-documented Arduino-style C/C++ firmware that: - samples the chest stretch sensor for breathing rhythm - polls the accelerometer to determine body position, starts a 20-second timer when supine, and cancels it on position changes - drives the vibration motor immediately after the threshold - timestamps and buffers all readings locally, then streams JSON over Wi‑Fi (preferred) or BLE I’ll pair this with a lightweight web app (React, Vue, or plain JS) that: - shows live data and mirrors vibration events with browser alerts - stores the night’s data in-browser so you can refresh without losing the session Deliverables: - production-ready firmware with clear documentation - a public Git repo with sources, pinouts, and build instructions - a streaming plan and a UI that updates within 500 ms of data arrival What web framework and backend do you prefer for storage and authentication (e.g., React vs Vue, Firebase vs AWS) before we start? Best regards,

@rbtech1984

Hello There!!! ⚜⭐⭐⭐⭐⚜(( Production-ready ESP32 firmware paired with a real-time sleep dashboard ))⚜⭐⭐⭐⭐⚜ I see you need your Sleep Apnea prototype transformed into clean, reliable firmware while streaming sensor data to a responsive web app. The goal is accurate supine detection with vibration feedback and a dashboard that updates in real time, giving users instant awareness of sleep positions. I bring hands-on experience in Arduino/C++ firmware, ESP32 Wi-Fi/BLE streaming, and building responsive web dashboards in React and Vue. I focus on precise timing, robust data transmission, and clear, maintainable code that scales for future features. Key Features: • Accurate supine detection and vibration motor triggering within 1 second • JSON-based real-time data streaming to a responsive web dashboard • Persistent session storage with visual/audio alerts for on-body feedback I can deliver fully documented firmware, a real-time alert-enabled web dashboard, and a complete Git repo for seamless handoff. Let’s discuss the roadmap to bring this prototype to production. Warm Regards, Farhin B.

@ayesha86664

Hi there! Prototype hardware works but messy firmware blocks real use. Without a dashboard, users cannot trust or review sleep data. I will rewrite clean ESP32 firmware with stable timing and data flow. I will stream reliable real time data and trigger vibration correctly. I will build a simple secure web app with live alerts and session storage. Do you prefer WiFi streaming first or Bluetooth as backup? Start /Open chat now.

@markupdudes

Hi, I’ve thoroughly reviewed your project requirements for your Sleep Apnea Device and web application. With extensive experience in Arduino C/C++ firmware development and real-time web apps using React and Vue, I am confident I can transform your breadboard prototype into a production-ready solution. I will cleanly rewrite the ESP32 firmware for reliable sensor sampling, precise supine detection with vibration triggers, and efficient data streaming over Wi-Fi in JSON format. Concurrently, I will develop a lightweight, responsive web app that visualizes live data, plays alerts synchronized with the hardware, and stores session data securely. I plan to deliver well-documented code following your criteria for low latency, zero packet loss, and real-time dashboard updates. I can start immediately and provide a public Git repo with full source, pinouts, and build instructions upon completion. Looking forward to your thoughts and timeline preferences. Do you have a preferred framework for the web app, or should I recommend the best option based on your requirements? Best regards,

@shahzaib81829

Hi, I'm interested to take your existing ESP32 breadboard prototype and deliver production-ready firmware plus a secure, real-time web dashboard. I will refactor the current Arduino-based ESP32 code into clean, well-documented C/C++ that reliably samples the stretch sensor, determines body position from the accelerometer, enforces the 20-second supine timer, and drives the vibration motor within specification, while buffering and streaming time-stamped data over Wi-Fi (or BLE if required) in JSON. In parallel, I will build a lightweight, responsive web app that visualizes live sleep data with sub-500 ms latency, mirrors vibration events with audio/visual alerts, and preserves the active session across refreshes. The final delivery will meet your acceptance criteria, pass an 8-hour overnight reliability test, and include complete source code, pin mappings, and build instructions in your supplied public Git repository.

@bradw14

I can deliver the production-ready ESP32 firmware and web app with precision — on time, on budget, and with excellence. Can you provide details on the preferred method of streaming data from the ESP32: Wi-Fi or Bluetooth LE? Pitch: I excel in Digital Product Development, Custom App & Website Development, and AI-Powered Automation/Agents. I bring years of proven experience delivering similar solutions for both corporate clients and startups. Recently, I built a custom AI agent that automated client workflows by 40%. If this sounds aligned, let’s connect and map out the next steps. Regards, Brad Wilson

@Ahmedh058

Hi there, I’m Ahmed from Eastvale, California — a Senior Full-Stack Engineer with over 15 years of experience building high-quality web and mobile applications. After reviewing your job posting, I’m confident that my background and skill set make me an excellent fit for your project — Sleep Apnea Device & Webapp . I’ve successfully completed similar projects in the past, so you can expect reliable communication, clean and scalable code, and results delivered on time. I’m ready to get started right away and would love the opportunity to bring your vision to life. Looking forward to working with you. Best regards, Ahmed Hassan

@nikolamarinkovi9

Hello, With my diverse skill set and background in Automation Engineering, I am well-positioned to turn your functioning sleep apnea device into a reliable, production-ready solution. My understanding of power automation systems and web application development will enable me to rewrite the ESP32's firmware in clean, efficient code that meets your requirements exactly. I am experienced with Arduino-style C/C++ and guarantee not just clean code, but a well-documented one. Moreover, proficient with JavaScript and Vue.js - both ideal for developing a lightweight web app such as this. From real-time data display to audio/visual alerts and session storage - I will ensure every aspect you desire is fully functional, fast and secure. Your four acceptance criteria will be met with religious precision and exceeded in performance. I value open communication, placing a high importance on understanding my clients' specific needs; ultimately delivering innovative solutions that streamline processes. Together, we can transform your device and associated webapp into user-friendly tools that bring much-needed relief to sleep apnea sufferers. Make the smart choice for reliable technology - choose me! Thanks!

@DanieE4

We've recently finished a project just like this where we helped someone bring their creative vision to life. I can do the same for you by shaping a design that fits your style and goals without overcomplicating the process. You won't find someone better aligned with what you're looking for. I paid close attention to your focus on clean production ready firmware and a responsive real time dashboard. I enjoy turning working prototypes into reliable systems, and I am comfortable with ESP32 timing logic, sensor streaming, and web based live visualisation. I'd love to chat about your project! The worst that can happen is you walk away with a free consultation. Regards, Danie.