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A NRF52 based low power consumption BLE tag with 4G and GPS capabilities. Features: Microcontroller: NRF52, any GPS + 4G module operable in south america Power Supply: Lithium-ion Battery (600mAh+, auto-switching) Communication: Bluetooth + GPS + 4G Additional Components: RGB LED and Buzzer Reprogramming Method: SWD The board must consume the absolute minimum power (~10uA) until GPS + 4G is enabled via software.
Projektin tunnus (ID): 40202916
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Aktiivinen 3 päivää sitten
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42 freelancerit tarjoavat keskimäärin $21 USD/tunti tätä projektia

Having worked extensively in the field of embedded systems and IoT, I bring to the table the perfect blend of skills and experience to realize your wearable GPS project. My mastery over microcontrollers like NRF52 (which is what we need for this project) and proficiency in firmware development particularly in BLE will ensure a seamlessly functioning, power-efficient tag. I have successfully created low-power designs before, with consumption levels as per your requirements. My expertise doesn't just stop at ensuring the hardware works well - I have deep skills in PCB design and layout, making me proficient in optimizing low power consumption and RF designs. This puts me at an advantageous position to meet your demand for auto-switching power supply with optimal battery performance. What differentiates me further is my holistic understanding of product development that extends from idea to prototype to the final product.
$25 USD 40 päivässä
8,0
8,0

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.
$20 USD 20 päivässä
7,3
7,3

As an experienced electrical engineer, I bring a wealth of knowledge and skills to the table that make me an ideal candidate for this project. With deep expertise in designing PCBs and circuits, I'm confident in my ability to craft a top-tier NRF52 based BLE tag with GPS and 4G functionalities. My proficiency in PCB design software like Altium and Easyeda will ensure precision, reliability and manufacturability of the final product. Efficient power management is key for wearable devices, and that very principle resonates strongly with my professional identity. My prior work on low-power distribution and the generation of noiseless analog circuits aligns perfectly with the core requirement of your project for low power consumption (10uA). I envision utilizing sophisticated techniques learnt through my renewable energy and embedded system experience to optimize power usage. Moreover, designing smart wearables means understanding user interaction deeply. I will leverage my skill set to integrate additional components like an RGB LED and Buzzer into the BLE tag, enhancing the usability of the device. Working with GPS and 4G modules operable in South America has been central to my practice which will undoubtedly aid in developing reliable communication capabilities in your wearable.
$15 USD 20 päivässä
7,4
7,4

Hello, With a firm mastery of PCB design and development, and a demonstrated aptitude for creating low-power, long-lasting hardware products, I am equipped to tackle this project head-on. My expertise with multilayer designs will be invaluable in ensuring the optimized arrangement of your BLE tag's components and systems. I also understand the criticality of power supply in wearable devices, and my knowledge of lithium-ion battery management systems will guarantee efficient and intelligent power usage. In addition to my hardware skills, I bring a robust background in firmware development to this project. My fluency in microcontroller programming will be integral to achieving the ultra-low power consumption you seek when the GPS + 4G functionalities are dormant. Furthermore, having worked extensively with communication protocols like Bluetooth as well as on GPS-enabled projects, I am confident in my ability to seamlessly integrate all three functionalities for optimal performance. Lastly, I have a solid understanding of RF design and analysis which is essential when working with BLE technology. My knowledge of RF filters, transceivers, and power amplifiers allows me to ensure reliable performance with minimal interference. Combining these skills with my sheer dedication and commitment to high-quality output marks us out as an outstanding fit for this project. Let's turn your vision into a compact BLE PCB that blends creativity, prec Thanks!
$40 USD 37 päivässä
6,7
6,7

Hi there! My name is Mairaj Ali, and my extensive experience in electrical engineering, electronics, and particularly in PCB design makes me a perfect fit for your project. I've been working in this industry for over 8 years now. As an avid user of Eagle, Altium, KiCAD, and EasyEDA, I am familiar with precisely the toolset you're using and can efficiently design the compact BLE PCB you need. Moreover, my expertise extends to RFID and GPS technologies which will be crucial for integrating the NRF52 microcontroller with the appropriate GPS + 4G module for seamless functionality in South America. Your power consumption requirement of (~10uA) until the selective software triggers GPS + 4G are enabled is something I'm confident in achieving owing to my experience with low-power circuit designs. Another advantage of choosing me is my versatility which stretches from hardware design to software programming. This means that not only can I provide you with a top-notch circuit design solution but also an efficient reprogramming method via SWD that'll enhance the deployment of your wearable GPS device. Let me assure you that as a top-ranked freelancer on this platform, I will deliver a high-quality product on time and within budget. Let's create something incredible together! #PCB #PCB_designing #Electrical #Electronics #ElectricalEngineering
$20 USD 40 päivässä
6,7
6,7

Hello, I propose a compact NRF52-based BLE tag optimized for ultra-low power operation with software-controlled GPS and 4G activation. The design will ensure ~10 µA sleep current using aggressive power gating and NRF52 low-power modes. A South America–certified 4G LTE + GNSS module will be selected for reliability and coverage. Power architecture will support a 600 mAh+ Li-ion battery with efficient charging and automatic source switching. Bluetooth, GPS, and 4G will be tightly integrated with secure firmware control via SWD reprogramming. RGB LED and buzzer will be included with minimal standby leakage and event-based operation. Regards, Engr Muhammad Usman
$20 USD 40 päivässä
6,5
6,5

Hi, I am an electrical engineer with over 7 years of experience in PCB design and embedded systems. I have designed up to 8-layer PCBs including mixed-signal, high-speed digital, power converter, and analog boards. I also have experience in firmware development for microcontrollers. I can design a compact, low-power NRF52 BLE tag with GPS and 4G, optimize it for minimal standby current, and provide full production-ready PCB and firmware. I can ensure reliable operation of all components including battery management, RGB LED, and buzzer.
$20 USD 40 päivässä
6,6
6,6

Hi there, This NRF52-based BLE tag with GPS and 4G is exactly in my wheelhouse. I’ve led compact wearable designs from concept through PCB layout and prototyping, with deep-sleep currents in the low microamp range and on-demand GPS/4G wake-up. I’ll design a compact PCB with robust power management that gates GPS/4G until software enables them, a SWD programming path, and a battery-friendly topology for a 600mAh+ Li-ion cell. The plan: select a NRF52 MCU (52832/52840) for BLE, pair with a GPS module and a 4G modem suitable for South America, implement a low-leakage power switch, ideal diode, and a high-efficiency regulator; lay out with tight RF isolation, short routes, and a clean SWD header; provide a complete schematic, board layout, BOM, and a succinct test/production plan. I’ll review your attachment and align the form factor and connectors. Timeline: design package ready in 5–7 days, followed by quick prototype validation. Please confirm the target form factor and thickness tolerance, and which GPS + 4G modules are acceptable for South America, along with any required sleep current target and wake-up behavior for GPS/4G. Best regards,
$25 USD 23 päivässä
6,0
6,0

Hi, how are you doing? I went through your project description and I can help you in your project. your project requirements perfectly match my expertise. We are a team of Electrical and Electronics engineers, we have successfully completed 1000+ Projects for multiple regular clients from OMAN, UK, USA, Australia, Canada, France, Germany, Lebanon and many other countries. We are providing our services in following areas: Embedded C Programming. VHDL/Verilog, Quartus/Vivado, LABView/ Multisim/PSPICE/VLSI MATLAB/SIMULINK Network Simulator NS2/NS3 Microcontroller like Arduino, Raspberry Pi, FPGA, AVR, PIC, STM32 and ESP32. IDEs like Keil MDK V5, ATmel studio and MPLab XC8. PLCs / SCADA PCB Designing Proteus, Eagle, KiCAD and Altium IOT Technologies like Ethernet, GSM GPRS. HTTP Restful APIs connection for IOT Communications. Also, we have good command over report writing, I can show you many samples of our previous reports. Kindly consider us for your project and text me so that we can further discuss specifically about your project's main goals and requirements.
$20 USD 40 päivässä
6,1
6,1

Hello, I have reviewed provided file and can design a compact custom PCB for your NRF52-based BLE tag with GPS and 4G capabilities, focusing on ultra-low power operation until the GPS and 4G modules are enabled via software. The focus will be on stable power architecture with automatic battery switching, EMI-aware layout for RF sections, and clean signal routing to ensure reliable Bluetooth, GPS, and 4G communication. All work will follow professional PCB design practices aligned with NRF52 and LTE/GPS reference guidelines, as well as low-power and DFM standards. Following are the deliverables: • Schematic design and PCB layout • Gerber and Drill files for manufacturing • Bill of materials I wanted to ask: • Are there size or enclosure constraints for the board? • Do you have preferred GPS and 4G modules that operate reliably in South America, or should I propose options? I have 7+ years of experience in projects like: • Battery-powered BLE and low-power IoT devices • Integrated GPS, cellular, and BLE modules with ultra-low-power operation My software expertise includes: • Altium Designer, KiCad, EAGLE Thank you for considering my proposal. I’m available to clarify and discuss details further through a meeting at your ease. Best Regards, Abubakar
$22 USD 40 päivässä
5,1
5,1

Hello there! As experts in Electronic Engineering and PCB design, we are prepared to take on the development of a compact BLE PCB for your Wearable GPS project. Our team specializes in NRF52 microcontrollers and the integration of GPS and 4G modules suitable for operation in South America. We will ensure that the board meets your power consumption requirements, utilizing a Lithium-Ion battery and incorporating features like Bluetooth, GPS, and 4G communication, as well as additional components like an RGB LED and Buzzer. Our reprogramming method will be through SWD, offering flexibility and efficiency. Let's discuss how we can bring this project to life! Cheers, RedBrick American Engineering
$25 USD 24 päivässä
4,7
4,7

Hi, I'm very glad to have an opportunity to help you with PCB design. This job is very appealing to me because I have a lot of experience in PCB design of various kinds of the electronic devices. Especially, IoT devices I also have enough experience in high speed multi-layer routing and RF impedance control. I'm very familiar with Altium, Eagle and KiCAD. I have my own Altium license and Eagle license. So if you hire me, I can start work immidiately. Also, I have 5+ years experience in developing an FW for various MCU such as STM, PIC, Atemga, ESP etc. I'll provide you all design files and manufacturing files (part library, schematic, layout, BoM, pnp, ODB++, assembly document, gerber, DRC document, and 3d model) Also, I can support you for PCB manufacturing and PCBA from our local company(READA company) in Shenzhen, China if you want. We will provide high-quality in PCB manufacturing and PCBA, reliable part sourcing, functional test according to customer's specifications, and quick shipping. Also, I can help you to order PCBs from JLCPCB, PCBWay and SEEEDStudio if you want. I'm confident my skills and experience in PCB design make me a good candidate for your job. Looking forward to hearing from you soon. Kind Regards. Ting
$35 USD 40 päivässä
4,8
4,8

Hello, I’m an embedded systems and PCB design engineer with 8+ years of experience designing ultra-low-power BLE and cellular IoT hardware, and I’ve carefully reviewed your NRF52 wearable GPS tag requirements. I’ve designed 15+ custom PCBs based on nRF52/nRF52840, including 7 battery-powered trackers combining BLE + GPS + LTE/4G, with sleep currents as low as 6–9 µA in production. For this project, I would design a compact, wearable-optimized PCB using an NRF52 MCU, a South America–certified GPS + 4G module, and a 600–1000 mAh Li-ion power system with automatic source switching and battery protection. I have hands-on experience implementing deep-sleep architectures, load switching, and firmware-controlled power domains to ensure the board stays around ~10 µA idle until GPS and cellular are explicitly enabled. I’ve integrated RGB LEDs, buzzers, SWD programming, and RF layouts while maintaining signal integrity and low EMI on 4-layer and optimized 2-layer boards. My deliverables typically include schematics, PCB layout, BOM, power budget analysis, and prototyping-ready files, with multiple designs successfully taken from concept to functional prototype in 3–4 weeks. I’d be happy to confirm preferred 4G bands/providers for South America and any size constraints before starting.
$20 USD 40 päivässä
4,4
4,4

Best Low-Power BLE & Wearable PCB Design Partner ⭐⭐⭐⭐⭐ Hi, Thanks for sharing the scope clearly. I’ve worked on low-power wearable and tracking devices where ultra-low sleep current, RF performance, and cellular/GNSS integration required careful design. Your project is very doable—the goal is to deliver a compact, production-ready nRF52 PCB achieving ~10 µA standby while supporting BLE, GPS, and 4G when enabled. ✅ How I’ll Help You Succeed 1. Review system requirements, regional 4G/GNSS compatibility for South America, and power-budget targets before starting design. 2. Design a low-power schematic and PCB layout with optimized power domains, battery charging, auto-switching, and SWD programming support. 3. Optimize RF layout, grounding, and antenna strategy for BLE, GPS, and 4G coexistence while minimizing leakage current. ✅ I’ve delivered wearable and IoT boards where achieving microamp-level sleep current, stable RF performance, and manufacturability were critical to product success. ✅ Before I start, one quick thing: Do you have preferred 4G modules or antenna constraints (chip vs external) to meet the size and power targets, or should I propose options? If you share that, feel free to message me and we can align quickly. Best, Prat PCB Must Innovations
$20 USD 40 päivässä
6,5
6,5

Hello sir, low-power BLE tags only look simple getting ~10 µA sleep with GPS + 4G needs strict power-gating and leakage-aware design. Well, what I can do for you as an Embedded Hardware engineer with 8 years of experience is design an nRF52-based BLE tracker PCB optimized for ultra-low quiescent current: selecting South-America-capable GPS + 4G modules, building an auto-switching Li-ion power path, and implementing hard power gating so GPS/4G stay truly off until software enables them. In fact, I’ve built and simulated power-focused embedded designs in MATLAB/Simulink (including a Battery Management System model and multi-frequency power system models), so I approach this with a power-budget-first mindset: sleep current accounting, burst profiling, and a design that’s verifiable on the bench.
$15 USD 40 päivässä
4,8
4,8

With my vast experience in hardware design and firmware development, I am confident that I am the ideal candidate for your project involving a compact BLE PCB for a wearable GPS. Proficiency in Altium Designer, KiCAD, EAGLE, EasyEDA, and Allegro OrCAD ensures that I can adapt to any platform and provide you with the best possible solution. My skills in electronics and PCB layout combined with my hands-on experience with NRF52 microcontrollers will enable me to design a highly efficient and low power-consuming board for your wearable device--a key aspect you outlined as crucial to your project. Having worked extensively with various Arduino cores, I understand the importance of allowing room for future code editing and small client-handled modifications. Additionally, my in-depth knowledge about GPS systems will prove invaluable while incorporating the "any GPS + 4G module operable in South America" requirement into the design. To ensure quick project deliverables prévisible timeframes , I'll employ efficient programming methods like multithreading and use relevant IDEs like STM32Cube, RUI (Rak User Interface), IDF (Espressif), Atmel Studio (ATSAM/ATMEGA). Choose me so we can make this sleek, powerful wearable Bluetooth device a reality together!
$15 USD 40 päivässä
4,1
4,1

Hello Employer, I am excited to submit my proposal for your project on creating a compact BLE PCB for a wearable GPS device. I understand that you are looking for a solution that integrates NRF52 microcontroller technology with GPS and 4G capabilities, optimized for low power consumption and operable in South America. Your need for a device that maintains minimal power usage until activation is a key challenge I am eager to tackle. With extensive experience in electronics and PCB design, especially in Bluetooth and GPS technologies, I am well-equipped to deliver a solution that meets your expectations. I have previously worked on projects involving NRF52 microcontrollers and have a deep understanding of their low-energy protocols, which will be crucial for achieving the ultra-low power consumption you require. My approach will begin with a comprehensive schematic review to ensure all components, including the RGB LED, buzzer, and reprogramming method via SWD, are optimally integrated. I will select a GPS and 4G module suitable for South American networks and design the PCB layout to support efficient power management. I will also prototype the device to test and refine its functionality, ensuring it meets all your specifications. I am committed to delivering a high-quality, reliable solution that aligns with your project's goals. I look forward to the opportunity to bring your wearable GPS device to life. Best regards, Dragan M.
$20 USD 10 päivässä
3,7
3,7

Hi,Really exiting. With rich experience in ultra-low-power IoT design, I have successfully brought dozens of NRF52-based tracking products from concept to mass production with sleep currents optimized below $10\mu\text{A}$. Given the strict power budget and the South American cellular landscape, do you require a hardware-level power-cut (load switch) for the 4G/GPS modules, or are you planning to rely on software sleep modes which often struggle with leakage in regions with fluctuating signal strength? To ensure success, I will implement a multi-rail power management strategy using a high-efficiency buck-boost converter to maximize your 600mAh battery life while maintaining zero-leakage states for the peripheral modules. I will select a robust LTE Cat-M1/NB-IoT module specifically verified for South American bands and integrate a precision-tuned RF layout for the Bluetooth, GPS, and cellular antennas. The design will include a dedicated SWD interface for seamless reprogramming, alongside the requested RGB LED and buzzer alerts, all contained within a compact, production-ready 4-layer PCB. My approach prioritizes signal integrity and power efficiency to ensure your tag remains operational for months on a single charge. I am ready to deliver the full schematics, PCB layout, and BOM immediately to meet your development timeline. Best Regard. Leonid Y.
$20 USD 40 päivässä
3,4
3,4

Hi, Please take a look at my portfolio first — this is exactly the type of low-power embedded hardware project I specialize in and actively look for. I focus on ultra-low power IoT, BLE devices, battery-powered systems, and compact multi-layer PCB designs. I can design your nRF52-based BLE tag with GPS + 4G with a strong focus on minimum power consumption (~10µA sleep current) and reliable RF performance. What I will deliver: • Complete schematic design (nRF52 + GPS + 4G + power system) • Ultra-low power architecture (deep sleep, load switching, power gating for GPS/4G) • Efficient Li-ion battery management with auto switching & charging • RF-optimized PCB layout (controlled impedance for BLE/GPS/LTE) • 4-layer compact PCB for clean routing and low noise Let’s discuss dimensions, preferred 4G/GPS modules, and target battery life to finalize the architecture. Looking forward to working with you. Best regards, Ahmed
$20 USD 40 päivässä
2,4
2,4

Hello, how are you? I design ultra-low-power IoT hardware for products that actually ship, not just prototypes. This project requires more than connecting modules — achieving true ~10 µA standby with GPS and LTE onboard demands correct power-domain partitioning, aggressive power gating, and deep understanding of nRF52 sleep states, leakage paths, and RF coexistence. That is exactly where my experience is focused. I will deliver a production-ready design: carefully selected LTE/GNSS modules certified for South American bands, a battery and charging architecture that guarantees minimal quiescent current, and a layout optimized for RF performance and manufacturability. GPS and 4G will be electrically isolated and fully shut down until explicitly enabled by firmware. Beyond schematics and PCB, I provide a complete, China-ready handoff: clean Altium source files, verified BOM with Chinese-market alternatives, assembly drawings, test points, and clear manufacturing notes so your CM can build without guesswork. I routinely support boards through fabrication, assembly, and first power-up in China, reducing risk, cost, and iteration time for clients. If your goal is a reliable, battery-efficient BLE tracker that can move straight into production, I can take full ownership of the hardware and deliver it correctly the first time. Let’s build something that performs exactly as specified — and is ready to manufacture. Best regards, Manoj.
$20 USD 40 päivässä
1,7
1,7

Goiânia, Brazil
Liittynyt helmik. 4, 2026
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