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I have an ESP32-WROOM module that must listen over Bluetooth to an existing third-party Android app and correctly understand the hexadecimal data it broadcasts. The job is to deliver rock-solid firmware that: • Opens a reliable Bluetooth (Classic or BLE—whichever you judge more stable for continuous streaming) serial link. • Receives every incoming packet from the app, parses the raw HEX string byte-by-byte, and exposes the interpreted values in a simple way (e.g., struct, JSON over serial, or clearly commented variables). • Includes clear in-code comments so I can expand the logic later if I decide to act on those values. I will load the code with Arduino IDE, so please keep the project compatible with that toolchain or provide a straightforward PlatformIO alternative. Along with the .ino/.cpp files, include a quick read-me that lists: 1. The Bluetooth library and profile you used. 2. How to pair the Android phone with the ESP32. 3. Expected HEX frame format with an example interpretation. Acceptance criteria: I flash your firmware, pair my phone, start the third-party app, and immediately see the interpreted output over USB serial in the exact human-readable format you documented—no dropped bytes, no garbled characters. If you need sample frames I can capture and forward them. Let me know any hardware assumptions before coding so we avoid surprises.
Project ID: 40738760
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27 freelancers are bidding on average ₹6,034 INR for this job

Hi, I have experience in designing Circuits and can complete your project. I have expertise in the following: 1- Designing schematic and PCBA 2- Ordering the PCBA and getting boards manufactured. 3- Writing firmware for the PCBA to make sure everything works as expected. 4- I can also develop smartphone apps to communicate and control the hardware. If you wish we can discuss in chat. Thank you.
₹10,000 INR in 7 days
7.3
7.3

Hello Sir, I have already worked on similar types of website and software development projects and I am confident that I can successfully handle your project. I am a full-time freelancer with **17+ years of experience** in web development, software development, automation, and API integrations. My expertise includes: * Android app development * ASP.NET C# web and software development * Python automation and web scraping (Amazon, Instagram, Facebook, Google Maps, LinkedIn, Telegram, and other custom scraping solutions) * JavaScript, jQuery, AJAX, Bootstrap, HTML5 * Microsoft SQL Server database development * Payment gateway integration * SMS, Email, Banking, Financial, and Insurance API integration * Custom automation bots and workflow automation software I focus on delivering **high-quality, scalable, and reliable solutions** with clean code and long-term support. Please contact me in private chat so we can discuss your requirements in detail. I can also show you a **demo of similar projects** I have completed. Looking forward to working with you. Thanks & Regards
₹1,500 INR in 5 days
5.8
5.8

With over 6 years of experience under my belt, my skills as a Mobile App Developer are finely honed, primed and ready to take on the challenge of your ESP32 Hex Bluetooth Interpreter project. I'm well-versed in working with various domain-specific hardware and have successfully built and integrated similar systems that required reliable Bluetooth connections and complex data interpretation. Using a straightforward combination of the Arduino IDE and a suitable Bluetooth library (with preference to Classic or BLE as necessary for continuous streaming), I will establish a solid serial link between the ESP32 module and your Android app. My codes will ensure no bytes are dropped, no characters are garbled even under high traffic loads.
₹600 INR in 3 days
4.0
4.0

Hello, Greetings , Good afternoon! I am skilled mobile software engineer with skills including Embedded Systems, Mobile App Development, Firmware Development, Bluetooth Low Energy (BLE), Android, Bluetooth, Arduino and C++ Programming. Please send a message to discuss more regarding this project. With regards
₹1,165 INR in 6 days
2.4
2.4

Hi, I can develop the **ESP32-WROOM Bluetooth firmware** to receive, parse and clearly expose the HEX data from your existing Android application. I have **16 years of embedded and wireless experience** with ESP32, Arduino, BLE, Bluetooth, serial protocols and real-time data acquisition. I can first determine whether the app uses **Bluetooth Classic SPP or BLE GATT**, then select the appropriate ESP32 implementation for reliable continuous reception. The firmware will include: * Reliable Bluetooth connection and reconnection handling * Packet/frame reception without losing data * Byte-by-byte HEX parsing and validation * Clearly structured variables/structs for interpreted values * Human-readable USB Serial output * Arduino IDE compatible `.ino/.cpp` source * Detailed comments for future expansion * README covering library/profile, pairing procedure and frame interpretation * Handling of buffering, delimiters, incomplete frames and malformed data I can work directly from **sample HEX frames captured from the Android app** and verify the parser against actual traffic rather than assuming the protocol. Once you provide the sample frames and confirm whether the phone currently connects using Classic Bluetooth or BLE, I can define the frame parser and firmware architecture. Best regards, Subhash Suman ESP32 | Bluetooth/BLE | Embedded C/C++ | Arduino | Wireless Systems
₹8,000 INR in 7 days
2.3
2.3

Please share the sample frames, also I am comfortable with the criteria. I will develop the firmware for esp32 and test it with the 3rd party app before delivery so I can provide well tested code that will save you hastle in testing.
₹2,500 INR in 2 days
3.0
3.0

Hello, I have the necessary skills and experience to complete your ESP32 Bluetooth communication project. I can select the appropriate protocol to ensure stable communication for your project and develop a program that reads the hexadecimal data and processes it into a format that can be viewed through the serial port. I have previously developed projects using ESP32 to transmit sensor data and exchange data with a PC. I believe this experience will be highly beneficial for your project. Once I have some additional details from you, I can complete the project and deliver it to you within a short timeframe. As requested, I can provide an Arduino IDE-ready program along with a README file that explains the system's operation and logic in detail. If you can share some technical details, such as the name of the third-party application you are using, protocol documentation, or an explanation of the frame format, I can get started right away. Please feel free to contact me. Best regards.
₹5,000 INR in 3 days
2.6
2.6

Hi, I can develop Arduino-compatible ESP32-WROOM firmware to receive Bluetooth data from the existing Android app, parse the incoming HEX packets byte-by-byte, and display the decoded values clearly through the USB Serial Monitor. Proposed Approach: Identify and configure Bluetooth Classic or BLE. Receive and handle continuous HEX data. Parse the HEX frame byte-by-byte. Convert data into readable values. Add clear comments for future modifications. Test using the client's sample HEX frames. Deliverables: ESP32-WROOM firmware HEX data parser Serial Monitor output Arduino IDE compatible .ino/.cpp files Bluetooth setup instructions HEX frame documentation
₹1,200 INR in 7 days
2.3
2.3

Hi Mate , Good afternoon! I am an expert mobile engineer with skills including Android, Firmware Development, Bluetooth, Mobile App Development, Embedded Systems, Bluetooth Low Energy (BLE), Arduino and C++ Programming. Please contact me to discuss more about this project. Thank you
₹1,165 INR in 4 days
0.0
0.0

Hello The "no dropped bytes" requirement is where most ESP32 Bluetooth code fails — the default BLE stack drops packets if the loop blocks, and Classic SPP hides that until you stream continuously for a minute. I'd use BLE with a notification callback that pushes raw bytes into a ring buffer, then parse outside the callback so a slow parse never stalls the radio. One thing that decides the frame parser: whether the app sends fixed-length frames or variable-length with a delimiter or length byte. Without a sample frame I'd build it length-prefixed and adaptable, but send me two or three captures from the app and I'll match your exact format instead of guessing. Two hardware questions before I start: which Android app, and does your ESP32-WROOM board have the standard antenna or an external one? That affects pairing stability at range. Looking forward to working with you
₹100,500 INR in 2 days
0.0
0.0

With a profound expertise in Arduino, Embedded Systems, and Firmware Development, I am the perfect match for your project. My experience also includes advanced proficiency in C/C++ coding which will be pivotal in achieving a reliable Bluetooth link to intercept and parse the hexadecimal data transmitted by the third-party Android app. I understand the significance of maintaining compatibility with Arduino IDE, and I assure you that my firmware will be meticulously built to adhere to this requirement. Moreover, I have an extensive understanding of various Bluetooth profiles and can make an informed judgment on which one, Classic or BLE, would be more stable for continuous streaming based on your specific needs. Whether it's designing a straightforward interface using structured data or JSON over serial, I am confident in my ability to provide a clean solution that meets your expectations. Lastly, one of my strengths lies in developing well-commented code that is easily expandable, a key specification you're seeking. This ensures that you can easily scale and modify the logic as required without any hurdles. I guarantee that all incoming packets will be parsed accurately with no garbled characters or dropped bytes. Let me prove my capabilities by delivering firmware that immediately displays the interpreted output in the exact human-readable format you desire, once paired with your phone and paired with your device.
₹600 INR in 1 day
0.0
0.0

Hi, I can develop this ESP32 Bluetooth receiver and HEX parsing firmware in Arduino IDE within 24 hours. Here is my technical approach for your requirements: Bluetooth Architecture: Depending on whether your Android app broadcasts via Classic SPP or BLE (e.g., Nordic UART Service), I will implement the most stable, non-blocking connection using ring buffering to guarantee zero dropped bytes or serial lag during continuous streaming. Packet Parsing & Structuring: Incoming HEX bytes will be processed byte-by-byte, validated, and mapped into a structured C-format (or clean JSON over USB Serial at 115200 baud) for instant readability. Clean Arduino IDE Delivery: The code will compile cleanly in the standard Arduino IDE, accompanied by modular comments for your future logic extensions, plus a clear README covering pairing steps, the library used, and example frame parsing. Please share a few sample HEX frames from your app, and I will begin right away.
₹1,000 INR in 1 day
0.0
0.0

Hi — CS + electronics, ESP32-WROOM bench (Arduino IDE / PlatformIO). M1 = BLE or Classic serial link + hex packet parse → struct/JSON/serial. M2 = documented .ino + README (library/profile, sample frames). Share Android app packet examples / expected fields for fixed quote or $35/hr. Ukraine remote (Kyiv).
₹1,050 INR in 7 days
0.0
0.0

Hello, I can deliver stable ESP32-WROOM firmware that receives the HEX data from your Android app over Bluetooth, parses it byte by byte, and prints clean, readable output on USB serial. My approach: - Bluetooth Classic (SPP, BluetoothSerial) if your app is terminal-style, or BLE (NimBLE-Arduino) if it requires it. I will confirm before coding. - Non-blocking frame parser (header, length, payload, checksum) that buffers partial packets and discards corrupted ones, so no bytes are dropped or garbled. - Values stored in a commented struct and printed in the format I document (text or JSON). - Arduino IDE compatible (.ino), PlatformIO on request. Deliverables: commented source code and a short README covering the Bluetooth library/profile, phone pairing steps, and the HEX frame format with an example. Hardware assumptions: standard ESP32-WROOM DevKit, 115200 baud, no extra peripherals. To get the parsing exactly right, please share: 1. App name (Classic or BLE?) 2. 5-10 sample HEX frames, with meanings if known 3. Frame structure (fixed length, header, checksum?) 4. Approx. packets per second With samples, I can deliver a working first version quickly and adjust it until the output matches your acceptance criteria. Small fixes after delivery are free. Best regards, Andre Septian
₹1,050 INR in 7 days
0.0
0.0

Hello, I can develop this ESP32-WROOM Bluetooth HEX interpreter using Arduino IDE. I have experience with ESP32/STM32 firmware, serial communication, sensor/device protocols and embedded debugging. For your project, I can: • Connect the ESP32-WROOM to the Android app using the appropriate Bluetooth Classic or BLE profile • Receive and handle the incoming HEX data reliably • Parse the received bytes according to the supplied frame format • Convert the required fields into clearly defined variables/structs • Output the interpreted data through USB Serial in a clear, documented format • Provide complete Arduino-compatible .ino/.cpp source code • Include comments and a README explaining the Bluetooth library, pairing procedure and HEX frame interpretation If you provide a few sample HEX frames from the Android application, I can use them to implement and verify the parser accurately. I will also make the code easy to modify later if you want to use the interpreted values for additional ESP32 functions. I can start immediately and deliver a tested, straightforward implementation. Thank you.
₹1,050 INR in 7 days
0.0
0.0

Hi, I can develop the ESP32-WROOM firmware to receive and reliably parse Bluetooth data from your existing Android application. I have experience with ESP32, Arduino, embedded C/C++, Bluetooth communication, serial protocols, and byte-level HEX data parsing. I will first identify whether Bluetooth Classic or BLE is appropriate, implement a reliable communication layer, parse the incoming frames byte-by-byte, validate packet structure/checksums where applicable, and provide clearly documented interpreted output through the USB Serial Monitor. To ensure the parser matches your application correctly, I will need a few sample raw HEX frames captured from the Android app. I will also provide the Arduino IDE-compatible source code and a concise README with setup, pairing, frame format, and usage instructions. I can start by analyzing the sample Bluetooth data and then build the firmware around the confirmed protocol.
₹1,400 INR in 7 days
0.0
0.0

Hi, your ESP HEX Bluetooth interpreter needs reliable communication between the ESP device and Bluetooth client, with accurate HEX command handling and clear response processing. I can build the software layer to establish the Bluetooth connection, send and receive HEX data, parse device responses, and expose the required commands through a clean interface. I’ll pay particular attention to packet structure, encoding, timing, connection states, and error handling. My full-stack background is useful where the interpreter needs to connect hardware communication with a web, desktop, or mobile interface. The implementation can be structured so additional HEX commands and device responses can be added without rewriting the core communication layer. I’ll also test the communication flow against the documented protocol to ensure commands are transmitted and interpreted consistently. Please share the ESP model, Bluetooth module/protocol, and HEX command documentation so I can align the implementation with the actual device protocol. Best regards, Khwaja Saif
₹2,500.44 INR in 7 days
0.0
0.0

Hi, This fits my daily work well — I build embedded firmware (ESP32/STM32/PIC) for lab instruments, including serial parsing and BLE/Bluetooth links. Approach: I'll confirm whether the app uses Bluetooth Classic SPP or BLE (Nordic UART-style) from your first sample frames, then build the ESP32 firmware accordingly — whichever gives a more stable continuous link. Deliverables: • Arduino IDE-compatible .ino project (PlatformIO on request) • Reliable connection with reconnect handling • Byte-by-byte HEX parser exposing values via struct or JSON-over-serial • Commented code for easy future extension • README: library/profile used, Android pairing steps, HEX frame format with a worked example I'll need from you: 2-3 sample HEX frames from the app, your ESP32-WROOM board variant, and any known frame structure (length/delimiter/checksum) if you have it. I'll validate against your exact acceptance test — flash, pair, run the app, confirm clean output with no dropped or garbled bytes.
₹1,050 INR in 20 days
0.0
0.0

Hey there, the important part here is reliably capturing the third-party Android app's Bluetooth frames and turning the raw HEX stream into predictable, documented values without dropped or misaligned packets. I'm Shuvadeep, a full-stack developer working with a development team that also handles Arduino, Raspberry Pi, embedded systems, and IoT projects. For this setup, the Bluetooth profile should be selected based on how the existing Android app actually communicates, rather than assuming Classic Bluetooth or BLE upfront. Once you provide sample captured frames and the ESP32-WROOM variant, I can implement the receive/parsing logic, expose the interpreted values through USB serial, and keep the firmware Arduino IDE compatible with clear comments for future expansion. I'll also document the library/profile, pairing process, frame structure, and example interpretation. The main clarification is whether you already know if the Android app uses Bluetooth Classic or BLE, or whether that needs to be identified from the app/device communication. Best regards, Shuvadeep
₹1,050 INR in 7 days
0.0
0.0

Hi there, I am an experienced embedded firmware engineer specializing in ESP32 microcontroller development, wireless communication protocols, and robust serial/binary stream parsing. I can deliver a rock-solid, drop-in Arduino-compatible firmware solution that establishes a seamless Bluetooth connection with your Android app and instantly decodes your custom data frames. I am ready to start immediately.
₹1,200 INR in 4 days
0.0
0.0

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