Sensor Based Embedded System Design

@cpp2048

If you have flexible budget for this development, we can discuss just in case if you are looking for professional service. If interested please drop a message. Thanks

@jimsufficiency

I’m a strong fit for this. I’ve built production-ready sensor systems combining IMU, temperature, and physiological sensors (PPG/respiration) on ESP32 and nRF52, covering hardware, firmware, and BLE data pipelines end to end. I can handle: • MCU/SoC and sensor selection with power budgeting • Schematic + PCB layout and board bring-up • C/C++ firmware (RTOS where useful) with timestamped acquisition and filtering • Clean BLE protocol for real-time data streaming • Power debugging, Li-ion charging, and validation docs Relevant past projects: • Health wearable prototypes (PPG, IMU, BLE) • Custom embedded sensor nodes (ESP32 / nRF52) • Battery-powered IoT devices with BLE data streaming Happy to propose milestones and review constraints to get started quickly.

@Amidst

Hey there! I’m Alok, A PCB, Circuit and Mechanical designer with a passion for turning ideas into rock-solid, high-performance circuit boards. even expert on Python, C, C++ With nearly a decade of experience, I’ve tackled everything from compact consumer gadgets to complex industrial systems—always with a focus on precision, efficiency, and reliability. # Schematic & Layout Design – Clean, optimized, and manufacturable. # Component Selection & Library Management – No surprises, just the right parts for the job. # Reverse Engineering – PCB cloning, replication, and improvements. # Gerber, BOM & CPL Generation – Ready for seamless production. # DFM & DFA Expertise – Because great design means smooth manufacturing. # Multi-Layer, Flex, & High-Density PCB Design – Whatever the project needs. If you need a PCB and Code that’s efficient, reliable, and built for real-world performance, let’s chat. I’d love to help bring your project to life!

@abdurRafiqM

HI, I am an experienced electronics and PCB Design engineer, specialised in use of ECAD software such as Altium Designer, KICAD, EasyEDA, etc. for the the design of electronics and PCB. I will design your projects to meet your Requirements and the industry standard. I do all kinds of circuits such as Power delivery circuit, Sensor Integrated Circuits, wireless control, MCUs etc. I will deliver the following. The Schematics for your Design The PCB for the design Bill of materials(If needed) Gerber, Pick and Place and other manufacturing and assembly drawings needed. Full Support and consultancy till the project is done. Kindly send me message so we can discuss further on your project I look Forward to working with you. Best Regards, Abdur-Rafiq

@chetanc20

With a project that demands a high level of skill and intricate understanding, I believe my experience as a Senior Hardware Engineer perfectly aligns with your needs. Over the years, I have built an impressive portfolio of projects, many of them as sophisticated as yours. My knowledge base centers around electronics and embedded systems, utilizing microcontrollers, and handling PCB layouts proficiently. This means I am well-suited to tackle architectural choices, component selections, and firmware development for your sensor-based embedded system needs. I have integrated multiple types of sensors in previous projects encompassing PPG, IMU, and temperature; essentially everything your project requires. I’ve even dealt with power management intricacies like Li-ion charging—a valuable skill for ensuring optimum performance and longevity in your project. Additionally, given today's focus on wireless data transfer, my experience with BLE also positions me strongly for delivering on your project requirements. Note: Estimated time for Hardware design schematic design and PCB design and programming. Not included Bid cost components procurement PCB Fabrication and Assembly.

@shahzaib81829

Hi, I can deliver an end-to-end, production-ready embedded system for your multi-sensor platform. I will use ESP32 and C/C++ firmware to reliably acquire, filter, timestamp, and stream temperature, motion, and physiological data over BLE. I’ll also handle sensor wiring, board bring-up, BLE data transport, and power/debug optimization, and provide clear fritzing diagram and concise documentation so your team can reproduce and scale with confidence. I’ve built similar sensor-driven systems which you can see in my portfolio. I am looking forward to collaborate with you.

@MQamar123

With my extensive experience in software and embedded systems development, I am confident in delivering an effective solution for your sensor-based project. My proficiency in C/C++ programming, microcontrollers like nRF52/ESP32, and communication protocols including I²C, SPI, and BLE align perfectly with your requirements. Moreover, I have hands-on expertise with sensor integration such as PPG and IMU which will be invaluable for precise data capturing. Whilst working with you, I will focus on providing a comprehensive service starting from architecture and component selection to the final validation documents. I understand the importance of a well-structured approach that's why I'll create a detailed milestone plan to ensure the work progresses smoothly. Additionally, my familiarity with power management and li-ion charging will also help me to address any power issues that may arise during the process. Overall, my objective is to meet and exceed your expectations by delivering a production-ready solution that is both efficient and reliable. Through my past projects, I have honed my skills in debugging complex systems which will be crucial for fine-tuning and bringing up the board without delay. Let's work together to make this project a success!

@CyberSasu

Drawing from my broad and deep experience in Mobile & Web Development, Embedded Systems & IoT which focus not only on writing code but also on power management, I believe I am the perfect fit for your "Sensor Based Embedded System Design" project. Having worked on multiple projects involving sensor integration (similar to PPG, IMU), wire sensors and firmware writing, I understand the complexities and nuances involved in these processes. In addition to my technical proficiency with microcontrollers like nRF52 / ESP32 and protocols like I²C, SPI, BLE, my software testing expertise brings excellent debugging abilities to the table. You can expect detailed Validation documents comprising a test plan, compiled binaries, pinout tables backed with impeccable documentation skills for seamless handover to your team. I'll ensure a production-ready solution encompassing architecture & component selection, template design for sensor front-end & core logic etc. Operating in a collaborative manner and providing timely feedback are two values that I strongly adhere to. My appreciation for deadlines ensures that project milestones are broken down meticulously which results in better planning. Consider this as an invitation to see examples of my previous work showcasing successful integration of sensors in a real-time setting and discuss how we can move forward quickly! Together let's create something amazing that transforms your ideas into reality!

@hancho6319

Thank you for outlining this production-ready embedded sensor platform. This is a substantial project, and my multidisciplinary background in Electrical Engineering, Embedded Systems, and PCB design is an ideal match. I propose a phased, milestone-driven approach: Phase 1 (Architecture & Design): Component selection and schematic design in KiCad. I recommend an nRF52840 SoC for its robust BLE, ample peripherals for sensor I2C/SPI, and advanced power management for Li-ion. This phase includes schematic review and BOM finalization. Phase 2 (Implementation): PCB layout (4-layer for signal integrity) and firmware development. The firmware will be built on FreeRTOS for reliable multi-sensor management, featuring dedicated tasks for data acquisition (PPG, IMU, temp), filtering, timestamping, and a clean BLE GATT service for data streaming. This phase delivers the board design and core firmware. Phase 3 (Bring-up & Validation): Prototype assembly support, board bring-up, firmware debugging, power optimization, and delivery of test plans, binaries, and full documentation. I have attached a portfolio sample showcasing a similar multi-sensor wearable I developed. My approach ensures we build a reliable, manufacturable foundation for your product stack."

@TheTech15

Hello iam experienced computer engineer experienced in arduino programig. I can help you in your project. I can do it for you using arduino and make gui desktop application to recieve and display the output dat and store it in text file. nice to me to help you in this project..

@adily1

Hi There, I understand you need a complete embedded system solution that integrates various sensors while ensuring seamless data access and reliable performance. As someone with over 6 years of experience in embedded systems and expertise in microcontroller programming, I am confident I can meet your requirements. I specialize in architecture and component selection, PCB layout, and firmware development in C/C++. My proficiency includes working with nRF52 and ESP32 microcontrollers, as well as an in-depth understanding of I²C, SPI, and BLE protocols—all critical for your project. I can outline milestones such as: 1. Component selection and schematic design 2. PCB layout and prototyping 3. Firmware development and testing 4. Integration and validation of the complete system For examples of my past sensor interfacing work, please check my portfolio: https://www.freelancer.com/u/adily1 I am eager to collaborate and bring your vision to life! Regards, Adil Yousuf Thank you!

@Yusrazubair1000

Hi There, Thank you for sharing the details of your project—I’m excited about the opportunity to collaborate on your embedded-system build. My expertise aligns well with your requirements, particularly in architecture design, sensor integration, and firmware development for microcontrollers like the nRF52 and ESP32. Before we dig in, I'd like to clarify a few points to ensure a smooth collaboration: 1) Are there specific temperature and motion sensors you prefer or any that you've worked with before? 2) Do you have any scalability requirements or additional sensors in mind for future versions? 3) What is your expected timeline for the initial prototype and the final production-ready solution? Why Choose Me? • Over 250 large-scale embedded projects completed • Proven experience in sensor integration and firmware development • Zero negative feedback in more than 5 years • Consistently receive 5-star ratings on projects involving similar technologies Project Milestones: 1. **Architecture & Component Selection:** Finalize the microcontroller/SoC and sensors based on constraints and specifications. 2. **Schematic & PCB Layout:** Deliver initial designs for review and iterate based on feedback. 3. **Firmware Development:** Develop and test firmware for data acquisition and filtering. 4. **Interface Development:** Establish a communication protocol (SERIAL/SPI/BLE) for data access. 5. **Documentation:** Prepare validation documents including test plans, binaries, pinout tables, and user notes. I am available from 9 AM to 9 PM Eastern Time

@yanf31

Hi, I see you need a production-ready solution for a multi-sensor system involving PPG and IMU data. As an Electrical Engineer currently specializing in energy optimization for ESP32 systems, I can deliver not just a working prototype, but a power-efficient, stable architecture. Proposed Technical Stack: MCU: ESP32 (Dual-core allows dedicated tasks for sensor sampling and BLE transmission to prevent data jitter). Firmware: RTOS-based C++ for deterministic sensor polling and thread management. Filtering: Implementation of digital filters (Kalman or Complementary) for the IMU and PPG noise reduction. Power: Li-ion management with optimized deep-sleep cycles for maximum battery longevity. My Proposed Milestones: Phase 1: Architecture & Component Selection. Finalizing the BOM (Bill of Materials) and sensor validation. Phase 2: Firmware Development & Signal Processing. Bare-metal/RTOS coding for data acquisition and filtering. Phase 3: PCB Design & Schematic. Professional layout in Altium/KiCad (focusing on signal integrity for delicate physiological sensors). Phase 4: BLE Protocol & Testing. Structuring the data packets for downstream access and power debugging. I have extensive experience interfacing sensors with ESP32 and can provide code snippets of my previous work in filtering and BLE GATT server implementation upon request. Let’s discuss your specific sampling rate requirements and compliance targets.

@gprasanth785

I will develop a working MCU-based embedded sensor system for real-time data acquisition and BLE streaming, suitable for R&D and prototype validation. Included in Scope MCU-based system (nRF52 or ESP32) Sensor interfacing: Temperature sensor IMU (motion sensor) PPG sensor (heart rate & respiration) RTOS-based firmware (stable and modular) BLE data streaming with clean data format Li-ion battery charging & power management Functional testing and reproducible results Complete documentation: Pinouts Firmware structure Build & flashing instructions Test notes Not Included ❌ Medical or regulatory certification (FDA / CE) ❌ Mass-production readiness ❌ Long-term clinical accuracy guarantees ❌ Custom ASIC or extreme ultra-low-power optimization Outcome You will receive a reliable, well-documented prototype platform that your team can test, integrate, and further scale if needed.

@ArivalaganVP

I've 10 years experience in embedded domain include esp32 Nordic series. I2c,SPI also have experience

@khainb1

I am perfectly suited for this position. I have built production-ready sensor systems, combining temperature and physiological (PPG/respiratory) sensors on ESP32, including hardware, software, and end-to-end BLE data paths. I can provide a complete, production-ready embedded system that reliably collects data from temperature, motion, and physiological sensors. My scope of work includes: • MCU/SoC and sensor selection with power budget • Circuit diagrams + PCB layout and board booting • C/C++ software (FreeRTOS if needed) with timestamped data acquisition and filtering • Clean BLE protocol for real-time data transmission • Debugging, Li-ion battery charging, and validation documentation • Providing validation documentation including test plans, binary code, pinout tables, and user notes. My experience: • Reading temperature sensor data to automatically turn fans on and off for the elderly late at night. • Reading soil moisture sensor data to automatically water plants when soil moisture is low. • Reading data from temperature sensors and stabilizing the temperature in a drying oven using a PID algorithm.

@shaheelh1

I can support your complete embedded-system build sensor hardware, firmware, and BLE data pipeline end to end. I have experience with ESP32/nRF52 platforms, low-noise analog front-ends, PPG/IMU/temperature sensing, and building reliable RTOS-based data acquisition systems.