Compact GPS Data Logger Assembly

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.