LoRa GNSS Compact Wearable Tracker Design

@macroenergy

Having a proficiency in Embedded Systems and PCB Layout, I am confident that I can deliver exceptional results for your LoRa GNSS Compact Wearable Tracker Design project. With a wide range of experience in various domains including Digital Motor Control, Analog Design, Electronic Design, Power Electronics, and Renewable Energy, I have refined my skills in creating technologically efficient wearable devices. My capacity to implement low-power distribution and design noiseless circuits aligns perfectly with your project's need for minimal power consumption. Furthermore, my track record in RF transmitter and receiver design, Bluetooth technology, and Wireless applications resonates with the very essence of your project. I have extensive knowledge using the required microcontrollers like ESP32 and STM32 and relevant sensor integration such as IMU, temperature sensor as mentioned for your project. Apart from bringing technical expertise to the table, I'll ensure open communication lines throughout the project so that we can evaluate the trade-offs between dimensions, battery capacity, and RF performance. My goal is to achieve the best possible outcome by diligently working on each aspect of this project; from mechanical concepts to hardware, operating modes to battery performance and then delivering you a manufacturable prototype with complete documentation and test software as requested.

@majeed219

The hard part isn't the feature list — it's holding GNSS and LoRa performance together once you shrink the antennas and pot them in epoxy, and still getting six hours on that battery. I'm Majeed, an embedded engineer running hardware and firmware as a premium service. I built a LoRa GNSS tracker on an STM32WLE5 — the LoRa radio sits on-die, so a transceiver IC comes off the board — with a u-blox MAX-M10 for multi-constellation fixes, a MAX17048 fuel gauge, and a 9-axis IMU for motion wake. The catch was GNSS antenna detuning after potting; I re-tuned the match against the cured epoxy to recover fix time, then duty-cycled GNSS to hold the runtime target. Why me? -> End-to-end delivery — schematic, PCB layout, enclosure, and test firmware from one source. -> Direct China fab relationships with a QC warehouse checking every batch before it ships. -> In-house sensor stock — IMU, GNSS, and fuel-gauge parts bench-tested same day. -> On-site lab to validate RF, antenna tuning, and power draw before prototypes ship. -> Demo video of both prototypes passing every test before final payment. Between the two I'd build Option B — worth a quick call to confirm that and the antenna approach before I scope the work?

@mairajali11

As an Electrical/Electronics Engineer and Professional PCB Designer with over 8 years of experience, I have a robust understanding of the intricacies involved in designing hardware projects to perfection. My proficiency lies in Arduino, Embedded Systems, LoRa, PCB Layout and many more that would be significant in accomplishing this project. Having completed numerous projects similar to the one you put forth in the project description, I am confident in my ability to design two ultra-compact coin trackers of maximum size 25×25×10 mm as required. I am well-versed with the nRF52832 and SX1262 LoRaWAN EU868 transceivers along with other components such as PCB antenna, CR2032 coin cell, temperature sensors, pressure sensors and more. Precisely what your project demands. I also bring to the table a complete understanding of LoRaWAN EU868 network transmission technology which will enhance your project's efficiency. Moreover, I assure you of my complete dedication towards delivering top-notch output as indicated by my Preferred Freelancer status - ranking me among the top 1% diligent and reliable professionals. To reiterate, not only will I meet your project's milestones efficiently but also deliver exceptional manufacturing files, schematics, hardware test firmware and necessary documentation as you requested on-time; ensuring that all CAD design is per your requirements before PCB routing commences co

@tshibsamuel477

Hi there, I read your offer carefully and understand that you need two fully assembled and tested ultra-compact LoRa GNSS wearable tracker prototypes, including electronics, enclosure, test firmware, documentation, and validation video. I can help with the complete hardware design, RF-aware PCB layout, component selection, prototype assembly support, enclosure design, and hardware test software. I have experience with low-power embedded systems, LoRa, GNSS modules, IMU sensors, battery-powered devices, USB-C charging, RF layout, compact PCB design, and manufacturing-ready files. For this project, I would evaluate both the coin and curved rectangular concepts, with special focus on antenna performance, battery capacity, wearable comfort, manufacturability, and power consumption. I have already worked with the main technologies mentioned, including LoRa, GNSS, LiPo charging, fuel monitoring, IMU sensors, temperature/pressure sensors, USB-C, low-power sleep modes, and compact RF PCB design. Just send me a message and we can discuss the technical details, preferred components, schedule, and prototype plan so I can start quickly. Best regards, Samuel Tshibangu

@engrusmanfaiz

Hello, I have extensive experience designing ultra-low-power IoT devices involving LoRa, GNSS, battery management, RF PCB layout, and compact embedded systems. I can deliver the complete hardware, enclosure, test firmware, and fully assembled prototypes, with a detailed engineering plan after reviewing your requirements.

@amelectronics

Hi, your project is very interesting. I have experience with ESP32-based hardware, LoRa, power management, battery-powered embedded systems, and PCB design. I primarily use Eagle CAD for hardware development. If using Eagle for the electronics design is acceptable, I'd be happy to discuss your requirements, recommend suitable components, and help develop a reliable prototype. Please let me know if Eagle source files are acceptable for your project.

@leonidye

Hi, Thanks for the detailed specification. I have experience with compact RF/PCB design, low-power embedded systems, LoRa/GNSS hardware, battery-powered sensors, enclosure design, and prototype validation. My recommendation is Option B, the curved rectangular form factor. The 50 × 15 × 15 mm space gives a better compromise for LoRa/GNSS antenna performance, LiPo battery capacity, USB-C access, assembly, and epoxy encapsulation. The 25 mm coin design is possible, but it will strongly limit battery life, RF efficiency, and mechanical layout. I can design the schematic, PCB layout in KiCad/Altium, BOM, Gerbers, pick-and-place files, assembly drawings, enclosure CAD/STEP/STL, and hardware test firmware. The test software can verify LoRa TX/RX, GNSS, IMU, battery level, USB charging, temperature, pressure sensor if included, sleep mode, heartbeat mode, and on-demand transmission. I will also provide component selection notes, battery-life estimate, RF/layout recommendations, assembly instructions, and a short validation report. Six-hour operation may be achievable in the rectangular form factor with careful GNSS duty cycling and LoRa power management, but I would confirm this during component selection. For the posted budget, I recommend starting with the design and prototype preparation phase, with PCB, components, enclosure, batteries, and shipping paid separately. Regards,

@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!

@MuhammadUzair16

Hi I am an embedded systems engineer with over 16 years of experience. I have extensive experience with compact RF/PCB design, LoRa, GNSS, low-power wearable/IoT hardware, LiPo charging, sensors, enclosure design and bringing consumer-grade products from concept to tested prototypes. For this tracker I would first validate the RF and power budget, then complete schematic/PCB, enclosure CAD, prototype assembly and focused test firmware for LoRa TX/RX, GNSS, charging, IMU, sensors, sleep and heartbeat modes. My initial recommendation is Option B, around 50 x 15 x 15 mm, because it gives a better antenna, battery and assembly compromise than a 25 mm coin. A coin version may be possible, but GNSS/LoRa antenna efficiency and useful battery capacity will be the main limitation. Estimated final weight would likely be 18-30 g depending on battery and encapsulation. For 20 second GNSS + LoRa heartbeat, I would expect roughly 4-8 hours in the rectangular form factor after component selection; the coin form factor may fall below that unless duty cycling is relaxed. I can also suggest ways to improve runtime with assisted GNSS, motion-triggered fixes and optimized sleep states. Similar client projects cannot be shared publicly, but I can show relevant examples privately if needed. My fixed price is $750 for the engineering/prototype assembly labor, with PCB, components, battery, enclosure fabrication and shipping billed separately as stated. Estimated schedule is 45 days after component/form-factor approval. Please contact me to discuss details.

@Mahmoud00Ibrahim

Hi, Your project is a great match for my experience. I have designed **three similar advanced small tracker systems** with compact form factors and comparable features, including **LoRa, GNSS, low-power design, battery management, sensor integration, and high-density PCB layouts**. I can help with the complete hardware development, including: * Schematic and PCB design * Component selection and optimization for size and power consumption * RF-aware layout for LoRa and GNSS * Enclosure design coordination * Hardware test firmware * Manufacturing documentation and prototype support Based on your requirements, I'll also evaluate both mechanical concepts and recommend the one that provides the best balance between size, RF performance, battery life, and manufacturability. I would be happy to discuss the project in more detail and share relevant examples of my previous work that are covered by NDA where possible. Looking forward to working with you.

@hayat38402

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:  Antenna Design (CST, HFSS)  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.

@yaroslavmark

Hi, I have 12+ years of experience designing low-power embedded and RF hardware, delivering 40+ production-ready PCBs including ESP32/STM32, LoRa, GNSS, BLE, battery-powered IoT devices, and compact multilayer layouts optimized for manufacturability and power efficiency. Based on your requirements, I recommend Option B (50 × 15 × 15 mm) because it provides significantly better antenna performance, battery capacity, GNSS reception, thermal management, and assembly reliability while remaining compact enough for wearable use. Approach ✅ I will define the complete system architecture, select the optimal MCU, LoRa, GNSS, sensors, and power management ICs, then estimate battery life and RF performance before schematic capture. ✅ I will design a compact RF-optimized PCB and enclosure with proper antenna keep-out, controlled grounding, USB-C charging, LiPo protection, and DFM-ready mechanical integration. ✅ I will develop hardware validation firmware, assemble and test two prototypes, and deliver complete manufacturing files, CAD models, documentation, and validation results. Questions ✅ What LoRa frequency band is required (433/868/915 MHz), and what communication range is expected? ✅ Do you have preferred GNSS accuracy, TTFF, or positioning update rate requirements? ✅ Could you share your target budget and preferred PCB technology (2-layer, 4-layer, or rigid-flex)? Best, Yaroslav

@hamzazayyad

Hello, Your project aligns well with my experience in embedded hardware, STM32 firmware, PCB design, and low-power electronics. I have 15+ years of experience developing production-ready embedded systems from schematic design through PCB layout, firmware, testing, and manufacturing support. I recommend **Option B (curved rectangular)** because it provides better antenna placement for LoRa/GNSS, improved battery utilization, easier PCB routing, USB-C integration, and better manufacturability than the coin-shaped design. I can deliver a complete hardware package including professional schematic, RF-aware PCB layout, BOM, Gerbers, Pick & Place, assembly drawings, native KiCad/Altium files, hardware test firmware, battery life estimation, manufacturing documentation, and design validation. The device will support deep sleep, configurable heartbeat transmissions, on-demand LoRa communication, GNSS positioning, USB-C charging, battery monitoring, IMU, temperature sensing, and an optional pressure sensor if space allows. During development I'll optimize power consumption, PCB stack-up, antenna placement, and RF layout to maximize battery life and communication reliability. I'll also provide realistic autonomy estimates based on battery capacity and transmission interval. I look forward to discussing your project.

@tetianam8

⭐⭐⭐⭐⭐ I've carefully reviewed your specification, and this is exactly the type of multidisciplinary hardware project that benefits from a structured engineering approach. Your requirements cover RF, low-power electronics, mechanical integration, and prototype validation, so my first step would be a feasibility review comparing both enclosure concepts before committing to the hardware architecture. Based on the information provided, the curved rectangular design is likely to offer better antenna performance, battery capacity, thermal management, and manufacturability while still remaining compact. I'll validate that recommendation during the architecture phase using the mechanical constraints and power budget. Milestones: System architecture & feasibility review Schematic, RF component selection & power budget PCB layout & enclosure design Prototype assembly & hardware validation Documentation & manufacturing package A few questions: • Do you already have a preferred LoRa frequency (433, 868, or 915 MHz)? • Is there a target IP rating for the enclosure, or is splash resistance sufficient for the first prototype? I look forward to collaborating on this project and helping develop a compact, production-ready wearable platform that can evolve into future commercial revisions.

@FranciscoSilvi

Hi There! As you can see in my portfolio on my profile, I have extensive experience designing PCBs and mass production equipment, just like you need. I can handle your project. I apologize for the simple proposal; I know you're probably tired of reading AI-generated proposals, and I'd rather not waste time on that. If you're interested in working with me, send me a message and we can work out the details! Best Regards!

@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 for my previous designs and also so we can discuss further on your project I look Forward to working with you. Best Regards, Abdur-Rafiq

@sakshis576

As an experienced RF/PCB engineer, I am well-suited to meet your needs for a compact LoRa GNSS wearable tracker. Not only have I developed successful hardware for similar projects, but my experience with mechanical design and 3D modeling will allow me to evaluate and recommend the most suitable form factor. I can also provide complete schematics, PCB layouts, BOMs with manufacturer part numbers, Gerber files, Pick & Place files and more for your project. In terms of operating modes and battery performance, I understand your need for reliable low-power consumption. With my expertise in embedded systems and PCB layout, I can ensure efficient use of resources while making your device capable of deep sleep mode, on-demand transmission and heartbeat mode as you require. Furthermore, I have in-depth knowledge of LiPo batteries and charger circuitry which will allow me to provide you with multiple realistic alternatives if needed to achieve at least a 6-hour operation.

@electronicsdone

Hi, The biggest risk in this project is not designing a wearable tracker—it is achieving reliable LoRa communication, accurate multi-constellation GNSS positioning, and long battery life within an ultra-compact form factor while maintaining excellent RF performance and manufacturability. I have 30 years of experience in RF PCB design, LoRa, GNSS, embedded systems, low-power electronics, battery-powered IoT devices, antenna optimization, and production-ready hardware development. I have designed compact wireless products from concept through prototype and manufacturing. For this project, I would focus on: 1. Designing a compact, low-power PCB optimized for LoRa, GNSS, and maximum battery life. 2. Optimizing RF layout, antenna placement, charging circuitry, and power management for reliable real-world performance. 3. Delivering complete production-ready documentation, including schematic, PCB layout, enclosure design, BOM, Gerbers, assembly files, prototype validation, and hardware test software. ✅ Key Technical Questions: 1. Which LoRa frequency band will the device use? 2. Is maximizing battery life or minimizing size your highest priority? If you message me, I can recommend the optimal hardware architecture, RF strategy, and mechanical design to achieve the best balance of size, battery life, and wireless performance. Best regards, Prat PCB Must Innovations

@julianm260

With the skills and experience I possess as a seasoned Senior Electronic Engineer, I believe I'm exceptionally qualified for your LoRa GNSS Compact Wearable Tracker design project. My proficiency in RF engineering and embedded systems have seen me develop standing hardware designs, run and manufacture prototypes to full completion, while ensuring utmost compliance with safety and performance standards. Even with tight deadlines, I have continuously delivered top-quality results, something that will come in handy during the end-to-end process of this project - conception through to manufacturing. My soldering skills are unmatched. Therefore, you can be confident that your two coin-sized innovative wearable devices and accompanying six receiver nodes will be meticulously designed, soldered and efficiently wire-up to facilitate proper functions. Alongside this, my dexterity in PCB layout work strengthens my grip on providing detailed CAD enclosures (STEP/STL) alongside schematic and BOM sheets for easy referencing post-production. Additionally, being skilled in both C/C++/embedded programs bolsters my capacity to manage the project's firmware requirements. My solid knowledge of Arduino is another trump card that I can confidently and creatively employ when designing the different components of this unique tracker system. Complementarily, my proactive troubleshooting expertise guarantees that any technical glitches or connectivity issues during execution shall be promptly resolved for a fully functional system before the money is released