
In Progress
Posted
Paid on delivery
Build Compact GPS Data Logger – Mumbai Freelancer Required I am looking for a Mumbai-based embedded systems / ESP32 developer to assemble and test a very small standalone GPS data logger. I will provide the main components: * HGLRC M100 Mini GPS * Seeed Studio XIAO ESP32-S3 * 150mAh 3.7V LiPo battery * Mini slide switch Required functionality * GPS logging at 10 Hz * Record: * UTC timestamp * latitude * longitude * GPS speed * heading/course * satellite/fix-quality information * Store data in the ESP32-S3 internal flash * No phone required while recording * Device should automatically begin recording after GPS lock * Data should be downloadable afterward through USB and/or a simple Wi-Fi webpage * Battery charging through the XIAO USB-C port * ON/OFF slide switch * Target operating time: approximately 30–60 minutes Important physical requirement The finished device needs to be as compact and lightweight as possible, ideally around: 40 × 25 × 12 mm or smaller under approximately 20 g where practical The GPS ceramic antenna must remain unobstructed. Scope I need the freelancer to: * solder and assemble the supplied components * program the ESP32-S3 * verify stable 10 Hz GPS logging * test battery operation and charging * provide the firmware/source code * provide a sample recorded GPS file * help arrange the components compactly for a later 3D-printed enclosure No custom PCB is required for this version. Budget for assembly/programming/testing: approximately ₹3,000-5,000. Mumbai-based preferred because the physical prototype/components need to be exchanged locally.
Project ID: 40665071
9 proposals
Remote project
Active 7 days ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs

**Dear Client,** I can build and test this compact GPS logger using your **HGLRC M100 Mini GPS + XIAO ESP32-S3 + 150mAh LiPo** and keep the prototype as small and lightweight as practical. I have **15+ years of embedded/ESP32 experience**, including GPS/GNSS, data logging, BLE/Wi-Fi, battery-powered devices, sensor integration and compact prototype development. I have also worked on **GPS-based tracking devices, ESP32 IoT systems and portable embedded prototypes**, so the requirements are well within my experience. I can handle: * 10 Hz GPS acquisition and logging. * UTC, latitude, longitude, speed, course and satellite/fix information. * Automatic logging after valid GPS fix. * Storage in ESP32-S3 flash with reliable file handling. * USB and/or Wi-Fi webpage for downloading recorded data. * LiPo operation, charging and power management verification. * Compact physical arrangement while keeping the GPS antenna unobstructed. * Firmware/source code, sample GPS log and test results. * Battery runtime and 10 Hz logging verification. I am based in **Delhi**, not Mumbai, but can support the project remotely or coordinate component/prototype exchange as required. **Best regards,** **Subhash Suman** ESP32 | GPS/GNSS | IoT | Data Logging | Embedded Systems | 15+ Years Experience
₹5,000 INR in 10 days
0.0
0.0
9 freelancers are bidding on average ₹7,336 INR for this job

Hi, I checked your "Compact GPS Data Logger Assembly" project description, it looks like the focus is on delivering a clean, responsive website that works well across all devices. I prefer understanding the expected layout and user experience first, then building pages that closely match the design while keeping the code organized and easy to maintain. Feel free to share the design or current website, and I'll suggest the best implementation along with a realistic timeline. Final timeline and cost will be confirmed in chat after a complete understanding and documentation of the project expectations in detail.
₹4,875 INR in 2 days
7.7
7.7

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.
₹7,000 INR in 7 days
6.6
6.6

Hi, I can develop the ESP32-S3 GPS data logger firmware and handle the complete software/testing side of the prototype. I will implement: - 10 Hz GPS data acquisition - UTC time, latitude, longitude, speed, course and fix/satellite data logging - Reliable storage in ESP32-S3 flash - Automatic recording after GPS lock - Standalone operation without a phone - USB and/or Wi-Fi download of recorded data - Battery operation and power-aware firmware - Clean CSV/data format with a sample recorded file - Compact component arrangement guidance for the future enclosure I will test GPS stability, logging consistency, flash storage and battery operation, and provide the complete commented source code. One important point: I am not Mumbai-based, so physical handover/assembly would need to be handled remotely unless local logistics can be arranged. I can handle the firmware and technical development. I can start immediately and will keep the implementation simple, reliable and easy to extend for the future custom PCB.
₹7,000 INR in 2 days
2.6
2.6

Hi there, I’m excited about the chance to help you build this compact GPS data logger. With my experience in embedded systems and working with ESP32, I’m confident I can deliver a clean, professional, and user-friendly device that meets all your expectations. I noticed you need it to automatically start recording after a GPS lock and store data in the ESP32-S3’s internal flash. That sounds like a fun challenge, and I love creating seamless solutions that make technology easy to use. I specialize in soldering, programming, and testing embedded systems. I’m also familiar with compact arrangements and can help ensure the final product is lightweight and unobtrusive. You can count on me for speedy communication and a fast turnaround. Let me know if you are available for a quick chat! Regards, Wonita
₹3,900 INR in 7 days
0.0
0.0

Hi there, You need a very compact standalone GPS logger using the HGLRC M100 Mini GPS and XIAO ESP32-S3, with reliable 10 Hz logging, internal flash storage, USB/Wi-Fi data export, and 30-60 minutes of battery operation. Since no custom PCB is required, I can focus on compact assembly, firmware, calibration, and testing. I have experience with ESP32, GPS modules, LiPo-powered embedded devices, serial protocols, data logging, and compact hardware prototypes. My approach: * Wire and assemble the supplied GPS, XIAO, battery, and switch with the smallest practical layout. * Develop ESP32-S3 firmware for 10 Hz GPS logging, automatic recording after fix, and structured data storage. * Add USB and simple Wi-Fi download functionality and verify the recorded data. * Test GPS stability, battery runtime, charging, and physical dimensions, then provide source code and a sample GPS file. I’ll also keep the GPS antenna area unobstructed and arrange the components with the future 3D-printed enclosure in mind. Are you looking for local Mumbai handover, or Mumbai-based assembly with courier delivery? Best regards, Shuvadeep
₹7,000 INR in 7 days
0.0
0.0

⚠️ IF YOU’RE NOT HAPPY, YOU DON’T PAY. ⚠️ I have extensive experience in embedded systems and have successfully assembled and tested similar compact devices for clients. I understand the importance of achieving stable 10 Hz GPS logging while maintaining a lightweight and compact design. I can help you assemble the provided components, program the ESP32-S3 for seamless operation, and ensure the device meets the specified dimensions and weight requirements. My approach will focus on ensuring that the GPS ceramic antenna remains unobstructed while allowing for easy data retrieval through USB or Wi-Fi. If you'd like to see examples of my relevant work, feel free to message me. I look forward to discussing your project further. Regards, Daniel
₹6,250 INR in 7 days
0.0
0.0

Hi, I am an Embedded Software Engineer with 4+ years of experience in ESP32, GPS integration, firmware development, data logging, and low-power embedded systems. I’m based in Ahmedabad. You can courier the components to me, and I can handle the assembly, firmware, testing, and compact prototype arrangement. I can develop and test the complete GPS data logger, including 10 Hz logging, internal flash storage, automatic recording after GPS lock, USB/Wi-Fi data download, and battery testing. I can deliver a working prototype. I’d also be happy to discuss and collaborate on future projects if this project goes well. I look forward to your response. Regards, Mausam
₹5,000 INR in 7 days
0.0
0.0

Mumbai, India
Payment method verified
Member since May 23, 2021
₹600-1500 INR
₹600-1500 INR
₹1500-12500 INR
₹1500-12500 INR
₹1500-12500 INR
$250-750 USD
$250-750 AUD
₹150000-250000 INR
$10-30 USD
₹12500-37500 INR
$30-250 USD
$30-250 CAD
$1500-2500 USD
₹600-1500 INR
₹1500-12500 INR
$50-70 USD
$30-250 USD
€30-250 EUR
₹12500-37500 INR
$3000-5000 USD
$250-750 USD
$30-250 CAD
€8-30 EUR
$30-250 USD
₹12500-37500 INR