Child-Safe GPS Tracker PCB Design -- 2

Compact 4G GPS Tracker – PCB Hardware Design I am developing a small rechargeable GPS tracking device, initially for child tracking in schools, with the same hardware platform potentially usable for elderly people, pets, bags, bikes/scooters and other assets. Hardware Requirements Small and compact PCB; target around 25 × 25 mm, but reliability and RF performance are more important than exact size. 4G LTE cellular connectivity suitable for India. Please recommend the most suitable low-cost Cat-1/Cat-1 bis module and provide the exact MPN. GNSS/GPS for accurate location tracking. LTE + GNSS antenna design with proper RF layout. 400–500 mAh rechargeable Li-Po battery. Charging IC + battery protection. Target battery life: 3–4 days, depending on tracking frequency and network conditions. Accelerometer for movement detection and low-power sleep/wake. SOS button. Small buzzer for alerts/device finding. Battery voltage/percentage monitoring. Nano-SIM for prototype. Automatic network reconnect/recovery. Low-power/sleep mode. MCU with sufficient Flash/RAM, UART, GPIO, ADC and low-power capability. SWD/JTAG/USB programming and debugging interface. Proper test points for hardware debugging. USB/charging interface as appropriate. Software/Firmware Compatibility I will develop the firmware myself, so the hardware should support: Cellular module AT-command control. GNSS control. MQTT/HTTP/TCP communication. Communication with my own FastAPI/cloud backend. OTA firmware updates in the future. Accelerometer, SOS, buzzer and battery control. Reliable network/GPS recovery. Firmware development is NOT included in this PCB project. Manufacturing Requirements The PCB must be designed for: JLCPCB/standard SMT assembly. Low-cost component selection without compromising reliability. Components available for future production. Exact manufacturer part numbers, not generic components. Future production of 100 / 500 / 1,000+ units. Avoid unnecessary proprietary components. Deliverables Please provide: Complete schematic. Editable PCB source files. PCB layout. Gerber files. Complete BOM with exact MPNs. CPL/Pick-and-Place file. Component footprints and libraries used. MCU pin mapping. Exact cellular/GNSS module datasheets. Manufacturing/assembly files. PCB revision/version information. Design notes required for future manufacturing. Ownership After payment, all editable design/source files and design rights should belong to me, and I should be able to manufacture unlimited quantities, including 1,000+ units, without additional PCB design licensing fees. Prototype Initially I plan to manufacture 3–5 prototype boards for testing. The design should allow hardware revisions after prototype testing. Important Before starting the final PCB layout, please provide: Proposed cellular/GNSS module and exact MPN. Block diagram. Preliminary component list/BOM. Expected PCB size. Estimated power consumption/battery life. Confirmation that the design supports Indian cellular networks.

Project ID: 40721457