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the requirements:- 1. Device Binding/Unbinding Device pairing via Bluetooth or QR code scanning from the app. Multiple devices can be added and managed within the app. 2. Find Ring / Device Option to locate the connected ring/device through the app. 3. Screen Flip Ability to rotate or flip the device screen as per user preference. 4. Device Battery Percentage Display of the device’s battery level within the app. 5. Tasbih Reminder Reminder notifications sent to both the app and the device. The device will either ring or vibrate upon reminder. Detailed clarification is required if we proceed with implementing this feature. 6. Tasbih & Custom Tasbih Data Display of Tasbih and custom Tasbih counts in the app, synchronized with the device/ring. 7. Device Screen Sleep Time Settings Configuration options for screen timeout/sleep duration. 8. Software Update Support for device firmware/software updates via the app. 9. Language Change Option to change the device language. 10. Homepage Settings Configuration of ring/device time and display settings as per the approved mockups.
Projektin tunnus (ID): 40287342
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38 freelancerit tarjoavat keskimäärin $1 043 USD tätä projektia

Hello, I’ve reviewed your BLE data transfer goals and I can deliver a reliable, low-latency on-air protocol, GATT design, and end-to-end example implementations that run on Nordic, ESP32, or TI stacks. I’ll design a compact GATT profile aligned to your sensor data structure, provide peripheral firmware for advertising and streaming, and a central reference (desktop/mobile/embedded) to parse and verify the stream. A concise technical document will cover packet format, connection parameters, and sensible power-saving techniques to keep the system extendable. What is the expected maximum sensor data rate and packet size per connection interval to optimize the on-air protocol? Best regards, Marko Aleksic
$1 250 USD 4 päivässä
6,7
6,7

With over a decade of expertise in web and mobile development, I understand the importance of creating a reliable, low-latency Bluetooth Low Energy solution for transferring sensor data. Your project requirements align perfectly with my skills and experience. In the past, I have successfully delivered projects in the IoT domain, including developing sensor data solutions for various industries. My experience in building GATT profiles, firmware for peripherals, and reference implementations for central-side devices makes me confident in meeting your project's needs. I am excited about the opportunity to work on your BLE Sensor Data Transfer Protocol project and ensure that it meets all your requirements seamlessly. Feel free to reach out to me to discuss further details and get started on this exciting project together.
$1 200 USD 20 päivässä
6,1
6,1

Hello Sir as i am computer and electronic engineer and i have master degree also so i can build desktop application fulfill that very much , thanks and regards
$1 500 USD 7 päivässä
6,1
6,1

Hi, I recently designed a battery-powered IoT monitoring board using the ESP32 with remote sensors connected through cable harnesses. The main challenge was minimizing power consumption while maintaining reliable sensor readings and keeping the PCB simple and low-cost for manufacturing. From your description, you need a compact IoT board integrating an VL53L4CD Time-of-Flight sensor and a 10K NTC thermistor, with the sensors connected remotely via cables. The key considerations will be stable power management for a NiMH battery system, clean analog measurement for the thermistor, and reliable connectors such as JST‑PH for external sensor wiring. My approach would be: 1. Design a low-power schematic with ESP32, battery management, and sensor interfaces 2. Implement efficient voltage regulation suitable for NiMH battery operation 3. Create a compact PCB layout optimized for low-cost manufacturing 4. Add connectors for remote sensors and removable battery integration 5. Deliver full fabrication files (schematic, PCB, BOM, Gerbers) Quick question: Do you plan to use deep-sleep modes on the ESP32 to extend battery life, and what approximate battery capacity are you targeting? Best regards Mykola
$1 125 USD 7 päivässä
5,1
5,1

Greetings! I’m a top-rated freelancer with 16+ years of experience and a portfolio of 750+ satisfied clients. I specialize in delivering high-quality, professional BLE Sensor Data Transfer Protocol creating services tailored to your unique needs. Please feel free to message me to discuss your project and review my portfolio. I’d love to help bring your ideas to life! Looking forward to collaborating with you! Best regards, Revival
$750 USD 14 päivässä
4,4
4,4

─── ⚡⭐⋆☆⋆⭐⚡ ─── Hi, Client I build low latency BLE sensor links end to end, from GATT design to firmware on Nordic or ESP32 and a clean central receiver app. Please review my PCB design, embedded system my expeirnce : https://www.freelancer.com/projects/embedded-systems/OTA-Dual-Bank-STM-Update/proposals Stack: Nordic nRF52 or nRF53 with Zephyr or nRF5 SDK, or ESP32 NimBLE, plus a central in Python Bleak or a mobile app, tuned for notification throughput. I’ve shipped streaming profiles with sequence numbers, CRC checks, reconnection logic, and connection parameter tuning for smooth real time graphs. Your goal is a press build workflow where you flash both ends and immediately see continuous sensor packets arriving cleanly with low latency. So, I'll: Design the GATT profile and packet format, then tune PHY, MTU, notifications, and connection intervals for low latency. Deliver peripheral firmware plus a central reference app that parses, verifies, and logs the stream with clear docs. Best, Siva
$1 200 USD 14 päivässä
4,3
4,3

⭐⭐⭐⭐⭐ Conduct a detailed requirements analysis to define a BLE protocol optimized for low-latency, reliable sensor data transfer. Design the GATT profile tailored to your sensor data structure, ensuring efficient packetization and minimal overhead. Develop and validate peripheral firmware for advertising, connecting, and streaming data packets on target platforms (Nordic, ESP32, TI). Implement central-side reference applications for desktop, mobile, or embedded platforms to receive, parse, and verify sensor streams in real time. Prepare concise technical documentation covering packet format, connection parameters, and power-saving strategies for future extensions. Utilize CnELIndia’s expertise in embedded systems, PCB layout, and BLE stack integration to ensure robust hardware-software coordination. Leverage Raman Ladhani’s experience in BLE protocol optimization and firmware development to guarantee low-latency, high-reliability communication. Conduct end-to-end testing on real hardware, validating continuous sensor readings and compliance with BLE specifications.
$1 125 USD 7 päivässä
4,0
4,0

Hi, I hope you are doing well. Very happy to bid your project because my skills are fitted in your project. I have experience developing BLE solutions for embedded systems including ESP32 and Nordic platforms, designing custom GATT profiles and implementing reliable low-latency sensor data streaming between peripherals and central devices. I will design a clean GATT profile tailored to your sensor data structure and implement firmware that advertises, connects, and streams packets efficiently while maintaining low latency and reliability. I will also provide a central-side reference implementation along with documentation explaining the packet format, connection parameters, and power optimization strategies so the system can be easily extended. If you send the message, we can discuss the project more. Thanks.
$750 USD 7 päivässä
3,8
3,8

Hello, With my extensive experience in embedded systems, Bluetooth Low Energy, and software development, I am excited about the opportunity to work on your BLE Sensor Data Transfer Protocol project. I have a strong background in Firmware development and GATT profile design that aligns perfectly with your project requirements. Using my expertise in C Programming, Java, and Electronics, I can provide you with a reliable solution for low-latency transfer of sensor data. I am confident in my ability to deliver a GATT profile design, firmware sample code, and a technical document that meets your specifications. Let's work together to bring your vision to life. Looking forward to discussing this project further with you. Warm regards, Anilptk
$1 050 USD 3 päivässä
2,1
2,1

I am a mobile developer with strong experience working with BLE devices. I have implemented secure connection and pairing flows, as well as reliable data transfer over GATT using custom services and characteristics, including eRPC-based protocols.
$1 000 USD 20 päivässä
2,2
2,2

Hi there, With over 10 years of experience in Electronics and Microcontroller programming, I have the expertise to tackle your BLE Sensor Data Transfer Protocol project. I understand the importance of reliable and low-latency sensor data transfer, and I am committed to delivering a solution that meets your requirements. Having completed 50+ Desktop/Mobile applications and Embedded software projects, I am confident in my ability to design a GATT profile that aligns with your sensor data structure, develop firmware for the peripheral, and create a reference implementation for the central-side device. I would love to connect with you in chat to discuss your project further and ensure that we are on the same page regarding the deliverables and expectations. Thanks.
$1 100 USD 7 päivässä
1,1
1,1

Hi, I understand you want a reliable BLE setup for low-latency sensor data streaming between peripheral and central. This involves designing the GATT profile, implementing the firmware flow, and providing a reference receiver. I’ve worked with BLE communication and device integrations where stable packet flow and latency matter. Focus would be clean protocol design, solid connection parameters, and clear documentation. Happy to discuss the target hardware and sensor data format. Regards Eduardo
$750 USD 10 päivässä
1,3
1,3

Hi there, I’d love to help you build a robust Bluetooth Low Energy solution for your sensor data transfer needs. With over 10 years of experience in developing production systems, I can deliver a well-defined GATT profile, firmware for the peripheral, and a reliable central-side implementation that meets your specifications. I’ve worked on similar projects that required low-latency data transfer and have a strong grasp of BLE standards and common chipsets like Nordic and ESP32. I’m more than happy to answer any technical questions you might have along the way. To ensure we're aligned, I suggest starting with a small milestone or test task. I value this collaboration and will approach it with the seriousness it deserves. Looking forward to your thoughts!
$1 125,01 USD 7 päivässä
0,0
0,0

Hello, I will build a Bluetooth Low Energy (BLE) solution for reliable, low-latency sensor data transfer. This includes everything from defining the on-air protocol to real hardware validation. I have extensive experience with BLE projects, including GATT profile design and firmware development for various chipsets like Nordic and ESP32. My previous work ensured seamless data streaming and robust connectivity. **Approach:** - Design a GATT profile tailored to your sensor data structure. - Develop firmware for the peripheral to advertise, connect, and stream data packets. - Implement a central-side reference application for desktop or mobile to receive and parse data. - Document packet formats, connection parameters, and power-saving techniques for future extension. **Questions:** - What specific sensor data types and formats should the GATT profile accommodate? - Are there any expected maximum range or latency requirements? - Will the central-side implementation require any specific OS or platform compatibility? I am ready to start immediately and deliver a clean, efficient solution that meets your specifications.
$750 USD 7 päivässä
0,0
0,0

Hello, I have carefully analyzed your project requirements for building a reliable BLE solution for low-latency sensor data transfer. Recently I worked on a similar embedded project where I designed a custom GATT profile, implemented firmware for a BLE peripheral streaming sensor data, and built a central application to receive, parse, and validate packets in real time. In your project the key aspects are designing an efficient GATT structure aligned with the sensor data format, implementing stable peripheral firmware with optimized connection parameters, and creating a central reference application to verify the data stream. I will ensure compatibility with common BLE platforms such as Nordic or ESP32 and provide clear documentation covering packet structure, connection settings, and power optimization. I am available to begin work immediately and committed to delivering a reliable BLE implementation within the shortest possible timeframe. Best regards, Viktor
$1 200 USD 20 päivässä
0,0
0,0

No description found.
$750 USD 7 päivässä
0,0
0,0

✅✅✅ BLE Firmware & Sensor Data Protocol Engineer ✅✅✅ Hi there, I have solid experience developing BLE-based sensor systems, including custom GATT profiles, low-latency data streaming, and firmware for platforms such as Nordic nRF, ESP32, and TI BLE stacks. My work focuses on reliable packet transfer, efficient connection parameters, and power-aware embedded communication. My approach is to design a clean GATT architecture aligned with the sensor data model, optimize connection interval/MTU for low-latency streaming, and implement peripheral firmware with a central-side reference app for real-time packet validation and parsing. I also document the protocol so the system is easily extendable. A few questions: What sampling rate and payload size are expected? Is latency or power consumption the higher priority? Which target chipset (Nordic, ESP32, TI) should be used for the reference implementation? I am ready to start immediately. Best regards
$750 USD 3 päivässä
0,0
0,0

Hi there, I am excited to submit my proposal for your BLE Sensor Data Transfer Protocol project. THE CHALLENGE is ensuring the seamless and reliable transfer of sensor data with minimal latency. One potential difficulty could be optimizing the power consumption while maintaining the low-latency requirements for real-time data streaming. To tackle this, I would conduct thorough testing and optimization of the firmware to strike the right balance between performance and energy efficiency. Additionally, ensuring compatibility with various chipsets and BLE stacks might pose a challenge, but I am well-versed in working with Nordic, ESP32, and TI platforms, which will streamline the development process. I am confident in my ability to design a robust GATT profile, develop the necessary firmware, and create a user-friendly technical document for easy extension of the system in the future. Looking forward to the opportunity to work on this exciting project. Regards, Matheus.
$750 USD 7 päivässä
0,0
0,0

Hi, Your BLE sensor streaming project sounds interesting, and I can help design a reliable low-latency solution from protocol definition through real hardware testing. I’ll create a clear GATT profile aligned with your sensor data structure, implement peripheral firmware (for platforms like ESP32 or Nordic) that advertises, connects, and streams packets efficiently, and provide a central-side reference client that receives, parses, and verifies the incoming data in real time. The implementation will follow current Bluetooth Low Energy specifications, with carefully chosen connection parameters and buffering strategies to keep latency low while maintaining stability. Along with the working code, I’ll deliver a concise technical document explaining the packet structure, GATT services/characteristics, connection configuration, and any power-optimization methods, so you can easily extend the system later.
$750 USD 7 päivässä
0,0
0,0

Being a seasoned Full-Stack Developer and Product Management Professional, I'm adept at translating complex requirements into practical and robust software solutions. I've had extensive experience working with the MERN stack, Python, API development, SQL, Generative AI and SEO - skills that are directly applicable to your BLE Sensor Data Transfer Protocol project. I can help you design a GATT profile that perfectly matches your sensor data structure and develop firmware or sample code that guarantees reliable, low-latency transfer of sensor data. Furthermore, I've always adhered to industry standards and specifications in my development endeavors. Consequently, I am well-versed in BLE protocols and have a good grasp on chipsets and stacks like Nordic, ESP32 or TI - ensuring my work remains compatible with widely used platforms. My ability to create well-documented technical materials will provide you with the power to extend the system seamlessly in future.
$1 125 USD 30 päivässä
0,0
0,0

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