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I have a functioning 12 VDC tandem-pump prototype that now needs a full electronic refresh. The target architecture is a single DRV8846 / 8848 driving both pumps, an ESP32-C6 handling control and BLE, plus a new pressure sensor that must be read in real time to trigger pump deactivation. What has to happen • Schematic and PCB re-design: fold the two pump drivers into one DRV8846/8848, add the pressure sensor interface and all support circuitry for the ESP32-C6 and its antenna. • Firmware: build robust motor-control code with error detection, continuous pressure & current monitoring, and an OTA mechanism so I can push remote updates through BLE or Wi-Fi. • Mobile app (iOS & Android): a clean interface that lets me start/stop each pump, choose speeds or duty cycles, and trigger firmware updates. Pressure data can remain on the firmware side for now; I only need it exposed later through the OTA channel. Acceptance snapshot 1. Updated schematic, Gerbers, and BOM ready for manufacture. 2. Compilable firmware (ESP-IDF or Arduino-ESP32) with documented error flags and BLE GATT table. 3. Cross-platform app build (React Native, Flutter, or native—your call) that pairs, controls pumps, and launches OTA packages. 4. Bench test video or log proving dual-pump drive, pressure sensing, and an end-to-end OTA cycle. If you already know ESP32-C6, DRV88xx drivers, and BLE app flows, this will be a straightforward but rewarding project. NOTE: If the phone app is not your thing, let me know and I'll source that separately, but coordination with the app development is to be expected.
Project ID: 39739071
64 proposals
Active 8 mos ago
Location: Vancouver, Canada
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64 freelancers are bidding on average $2,168 USD for this job

Hello, I am excited about the opportunity to work on your BLE Tandem Pump project. With a solid background in electronics and embedded systems, I understand the importance of refreshing your existing prototype while ensuring seamless integration of the DRV8846/8848 drivers and ESP32-C6. My approach will focus on developing a comprehensive schematic and PCB design that accommodates the new pressure sensor, as well as creating robust firmware for effective motor control and monitoring. Additionally, I've successfully built mobile applications that interface with hardware, allowing for easy control and firmware updates. I am confident that I can meet your requirements, providing you with the updated schematic, compilable firmware, and a functional mobile app. I look forward to bringing your vision to life. What specific features do you envision for the mobile app regarding pump control and monitoring? Thanks, Muhammad Awais
$3,000 USD in 11 days
8.7
8.7

With over 10 years of experience in web and mobile development, including expertise in ESP32-C6, DRV8846/8848 drivers, and BLE applications, I understand your need for a comprehensive electronic refresh for your tandem pump prototype. I have successfully executed similar projects in the healthcare and IoT domains, delivering robust solutions that meet client requirements. My track record in designing schematics, developing firmware with error detection and remote update capabilities, and creating user-friendly mobile apps positions me as the ideal partner for your BLE Tandem Pump PCB & App project. I am confident that my experience in ESP32-C6, DRV88xx drivers, and BLE app development will ensure a smooth and rewarding collaboration. I am ready to take on the challenge and deliver the updated schematic, firmware, and cross-platform app that meet your expectations. Let's discuss how we can turn your vision into reality. Reach out to me today to kickstart this exciting project.
$2,400 USD in 30 days
7.9
7.9

Client, I have carefully reviewed your project requirements for the BLE Tandem Pump PCB & App. With over 10 years of experience in Electronics and Mobile App Development, we are confident in our ability to deliver this project with perfection. To ensure a successful outcome, I propose the following steps: - Redesign the schematic and PCB to incorporate the DRV8846/8848, ESP32-C6, and pressure sensor interface. - Develop robust motor-control firmware with error detection, continuous monitoring, and OTA functionality. - Create a user-friendly mobile app for iOS and Android to control the pumps, adjust speeds, and trigger firmware updates. I believe that our expertise in ESP32-C6, DRV88xx drivers, and BLE app development will make this project straightforward yet rewarding. I invite you to start a chat so we can discuss your project in more detail and collaborate on achieving your desired outcomes. Looking forward to the opportunity to work together. Best regards.
$2,300 USD in 7 days
7.3
7.3

Dear Client, I am excited about the opportunity to work on your BLE Tandem Pump PCB & App project. With expertise in ESP32-C6, DRV88xx drivers, and BLE app development, I am confident in delivering the solutions you require. For the schematic and PCB re-design, I will seamlessly integrate the DRV8846/8848, add the pressure sensor interface, and ensure optimal support for the ESP32-C6. The firmware development will focus on robust motor control, real-time monitoring, and an OTA mechanism for remote updates. In terms of the mobile app, I will create a user-friendly interface for controlling the pumps, adjusting speeds, and facilitating firmware updates. I am proficient in React Native, Flutter, and native app development, ensuring a seamless cross-platform experience. I am committed to providing you with updated schematics, compilable firmware, a functional app, and comprehensive testing to meet your project requirements. Let's collaborate to bring your vision to life. I look forward to discussing the project details further and working together towards a successful outcome. Best Regards, https://www.freelancer.com/u/Microlent
$3,000 USD in 60 days
8.0
8.0

Hello, I appreciate the opportunity to work on your BLE Tandem Pump PCB and App project. I understand that you require a full electronic refresh of your current prototype, focusing on integrating the DRV8846/8848 for the pump control, alongside the ESP32-C6 for handling BLE and real-time pressure sensing. My approach includes redesigning the schematic and PCB to incorporate these components, while also ensuring robust firmware is developed for motor control and error detection. For the mobile app, I can create a user-friendly interface for controlling the pumps and managing firmware updates. I am excited about the potential to create a seamless system for your tandem pump and I look forward to delivering high-quality results. What specific real-time pressure sensor do you plan to use, and are there any specific features you require for the mobile app beyond what you've described? Thanks, Shamshad
$3,000 USD in 28 days
7.0
7.0

Hello Robert V. Hope you are doing well! This is Efan , I checked your project detail carefully. I am pretty much experienced with React Native, Prototyping, Motor Control, PCB Layout, Embedded Systems, PCB Design and Layout, Electronics and Mobile App Development for over 8 years, I can update you shortly. Cheers Efan
$1,500 USD in 1 day
5.7
5.7

Dear Client, I am excited about the opportunity to work on your BLE Tandem Pump PCB & App project. With expertise in Mobile App Development and experience in integrating advanced AI capabilities, I am confident in my ability to deliver a robust solution. I am well-versed in ESP32-C6, DRV88xx drivers, and BLE app flows, making me a suitable candidate for this project. I am eager to redesign the schematic and PCB, develop firmware for motor control, and create a user-friendly mobile app for iOS and Android platforms. I look forward to collaborating with you to bring this project to fruition and meet all your requirements. Thank you for considering my proposal. Best regards,
$3,000 USD in 7 days
5.3
5.3

Hi There!!! ⭐⭐⭐⭐(BLE Tandem Pump PCB & App)⭐⭐⭐⭐ You need a full electronic refresh for your 12 VDC tandem-pump prototype, combining PCB redesign, robust firmware, and a mobile app to control pump operation. The goal is a single DRV8846/8848 motor driver controlled by an ESP32-C6, with BLE connectivity, pressure monitoring, OTA updates, and cross-platform app control. ⭐⭐⭐⭐ Redesign the PCB for dual pump drivers with pressure sensor integration, implement firmware for motor control and monitoring, and build an iOS/Android app for pump operation and OTA updates. ⭐⭐⭐⭐ Execution Plan I will create the schematic and PCB, integrating the DRV8846/8848, ESP32-C6, and pressure sensor. Firmware will be developed using ESP-IDF with motor control, error detection, and OTA updates over BLE/Wi-Fi. The cross-platform app (React Native or Flutter) will allow start/stop, speed/duty selection, and firmware updates. Full documentation and bench test validation will ensure manufacturing readiness and reliable operation. Key Points • Updated schematic, Gerbers, and BOM ready • Firmware with motor control, pressure monitoring, and OTA • BLE connectivity and GATT table design • Cross-platform mobile app for pump control • Bench test video/log validating full system With 9+ years in embedded systems, PCB design, firmware, and mobile integration, I deliver reliable, clear, and high-quality solutions. Let’s bring your tandem pump system to life! Best Regards, Farhin B.
$4,500 USD in 15 days
5.9
5.9

Hi there, Your project to refresh the tandem-pump electronics with an ESP32-C6, DRV8846/8848, and real-time pressure sensing sounds like an exciting challenge. I’m Muhammad Talha, and with 7+ years of experience in embedded systems, PCB design, and IoT development, I can deliver a seamless end-to-end solution. Here’s what I’ll provide: ✔️ Complete schematic, PCB layout, BOM, and Gerbers ready for production ✔️ ESP32-C6 firmware with motor control, error detection, current/pressure monitoring, and OTA updates via BLE/Wi-Fi ✔️ Cross-platform mobile app (React Native/Flutter) to control pumps, adjust speed/duty cycle, and trigger OTA packages ✔️ Bench test video/log showing dual-pump drive, pressure sensing, and OTA cycle success I’d love to discuss the technical details further—when would you like to connect and align on the roadmap? Best regards, Muhammad Talha
$1,500 USD in 7 days
5.4
5.4

Hi Robert V., I came across your project "BLE Tandem Pump PCB & App" and I'm confident I can help you with it. About Me: I'm a agency owner with over 8+ years of experience in Mobile App Development, React Native. , and I understand exactly what’s needed to deliver high-quality results on time. Why Choose Me? - ✅ Expertise in required Technologies and 1 year post deployment free support - ✅ On-time delivery and excellent communication - ✅ 100% satisfaction guarantee Let’s discuss your project in more detail. I’m available to start immediately and would love to hear more about your goals. Looking forward to working with you! Best regards, Deepak
$2,200 USD in 30 days
5.2
5.2

Hi Robert V. I reviewed your project "BLE Tandem Pump PCB & App" It’s a great fit for my expertise. I can deliver a fast, secure, and user-friendly solution within your desired timeline at a reasonable price. With 500+ completed projects and a 4.9★ Top-Rated profile, I guarantee you’ll get high-quality results that meet your expectations. ★ Why Clients Choose Me Proven Track Record → 400+ reviews, 500+ projects Web Expertise → WordPress, Shopify, wix, Laravel, React, Vue.js, PHP, Python and more E-commerce & SEO → Store setup, payments, on-page SEO, performance boost UI/UX Design → Modern, responsive, conversion-focused On-Time & On-Budget → 96% timely, 97% within cost Reliable Support → Free 1-month help + long-term maintenance Secure Solutions → Backups, security & optimization Risk-Free Guarantee → No upfront payment. Pay only when satisfied, with full money-back assurance. If you want a professional developer who delivers on time, on budget, and stress-free, let’s connect. I’ll turn your vision into a secure, rapid, and growth-focused digital experience. Best regards, Kausar Parveen
$1,500 USD in 10 days
5.0
5.0

Having a decade-long experience in web and mobile app development, I bring to your project a highly versatile skill set which can be molded to fit your specific needs. While I may not have an extensive background with ESP32-C6, DRV88xx drivers, and BLE app flows, my technical acumen as a "Full Stack Software Engineer” allows me to learn and adapt quickly. My proficiency in React Native and Flutter will enable me to build an intuitive cross-platform app that is easy to use and seamlessly integrates with the rest of your system. My strength lies in my proactive approach, meticulous planning, and unfailing commitment towards meeting deadlines. I assure you a refined, functional tandem pump PCB design with all necessary upgrades including the new pressure sensor interface and support circuitry for ESP32-C6. In terms of firmware development, I will create robust motor-control code incorporating error detection, continuous pressure & current monitoring alongside an OTA mechanism for effortless remote updates through BLE or Wi-Fi.
$1,500 USD in 15 days
5.2
5.2

Hello, I’m excited about this project and I know we'll communicate well as fellow Americans. I have experience integrating DRV8846 drivers and ESP32 modules, and I’ll ensure the schematic and PCB redesign meets your specs. In a similar project, we faced challenges with real-time current monitoring but resolved it by optimizing the firmware to handle interrupts efficiently. I’ll write robust firmware with OTA updates and proper error detection as you requested. Let's build a seamless app to control the pumps and monitor pressure data as we move forward on this project together.
$2,250 USD in 7 days
5.3
5.3

Hi There!!! I have carefully studied your project details and fully understand the level of integration and precision you need for your BLE-enabled dual-pump system with OTA and mobile control. I am the best fit for this because I have hands-on experience in ESP32-C6 firmware development, DRV88xx motor drivers, and BLE-controlled embedded systems. 1. I will design a compact and production-ready PCB with DRV8846 and ESP32-C6 including BLE antenna matching and pressure sensing interface. 2. Develop robust firmware for real-time pressure & current sensing, motor control, and secure OTA updates over BLE/Wi-Fi. 3. Build a Flutter-based cross-platform app to control pump speed, start/stop, and manage firmware upgrades. I provide end-to-end delivery: schematic + PCB design, firmware with OTA & diagnostics, fully tested source code, app UI/UX with pairing, and OTA flow. With 9+ years experience in embedded systems and mobile app development, I have completed IoT projects involving BLE, pressure sensors, OTA updates, and real-time motor control for healthcare and industrial clients. Looking forward to chat with you for make a deal. Best Regards Elisha Mariam!
$6,969 USD in 40 days
4.4
4.4

With my extensive experience in electrical engineering, including six years focused on microcontrollers like Arduino and ESP32 (that you've specified), this project is tailored to my strengths. I've not only worked with your needed tools and components, but I've also successfully executed multiple similar designs before. My proven track record in circuit designing, PCB layout, and display/sensor/actuator interfacing secures your project's needs. And my proficiency extends to innovative solution crafting and optimizing circuitry - traits crucial for this upgrade. A key attribute I bring to the table is attention to every detail. From redesigning the schematic and Gerbers for the single DRV8846/8848 setup while including the pressure sensor interface and antenna support circuitry for ESP32-C6, to building compilable firmware incorporating error detection algorithms and continuous pressure/current monitoring - thoroughness is central. I understand how important it is for the motor-control code to be robust; especially with features like OTA updates via BLE/Wi-Fi which I'll ensure through every phase including documenting error flags and BLE GATT table.
$2,250 USD in 7 days
4.3
4.3

Thank you for sharing the details of your BLE Tandem Pump project; after a thorough review, I am confident that my decade of experience in embedded systems and mobile development is an ideal match for your needs. My approach will be to meticulously redesign your PCB around the ESP32-C6 and DRV8846/8848 chips, develop robust motor-control firmware with full monitoring and OTA updates, and pair it with a intuitive cross-platform mobile app for seamless control. This comprehensive expertise ensures a streamlined and successful development process from schematic to deployment. I am very eager to discuss your vision further to ensure every technical detail aligns perfectly with your goals. I am available to start a chat at your convenience to begin this rewarding collaboration. Best regards,
$1,550 USD in 5 days
4.2
4.2

Hello Robert, I’m excited about the opportunity to work on your BLE tandem pump project, as it perfectly aligns with my expertise in embedded systems and mobile app development. I have experience designing PCBs using DRV88xx drivers and implementing robust firmware for ESP32 microcontrollers, ensuring seamless control and monitoring of pumps. I can provide a comprehensive solution that includes schematic and PCB redesign, along with developing firmware that features error detection and OTA update capabilities. Additionally, I can create a cross-platform app using React Native that will allow you to control each pump effectively while ensuring easy future updates. What specific requirements do you have for the mobile app's user interface and functionality beyond the basic controls? Thanks, Bryson
$2,500 USD in 30 days
4.1
4.1

Hello, I have carefully reviewed your project requirements for the BLE Tandem Pump PCB & App. I understand that you need a complete electronic refresh for your prototype, including schematic and PCB redesign, firmware development for motor control and OTA updates, as well as a mobile app for iOS and Android. With my expertise in Mobile App Development and experience in working with React Native, I am confident in my ability to deliver a robust solution for your project. I have a strong background in ESP32-C6, DRV88xx drivers, and BLE app flows, making this project well within my capabilities. I am eager to discuss the technical details further and ensure effective communication throughout the project. Please feel free to reach out with any questions or clarifications. Best regards,
$1,900 USD in 7 days
4.3
4.3

Leveraging on my vast experience in mobile app development garnered over 8 years, I am confident in my capability to drive the success of your BLE Tandem Pump PCB and App project. I have extensive knowledge of ESP32-C6, DRV88XX drivers, and BLE app flows, which will prove invaluable in delivering exceptional results for this project. Not only do I offer the technical acumen required for the job but also a commitment to fostering collaborative relationships; something that is essential in ensuring smooth coordination with the app development. In addition to my technical competence, I am an individual who is concerned about delivering solutions that stand out from the rest. This sensitivity to distinguishing your brand offering from competitors' establishes me as the best fit for your project’s unique needs. My passion for design and enthusiasm towards finding innovative solutions will propel me to create an aesthetic mobile interface that pairs seamlessly with your hardware, enhances user experience, and meets your desired functionality targets. Here is the link of my profile you can check relevant portfolio and if there is any question and concerns you can reach out to me. https://www.freelancer.com/u/javeda5 Shoot me a message so we can discuss the project scope, deadline and budget will be discussed over chat Thanks and Regards Creative Beavers G.
$1,500 USD in 1 day
3.4
3.4

Hey Mate Robert V., Good afternoon! I am skilled mobile engineer with skills including PCB Design and Layout, Motor Control, React Native, Mobile App Development, Embedded Systems, Electronics, Prototyping and PCB Layout. Please send a message to discuss more regarding this project. Always happy to hear from you Angel
$2,500 USD in 30 days
3.7
3.7

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