The WIN-PIHAT-A7672S by Augmatic Technologies is a high-performance LTE expansion board designed for Raspberry Pi 4 and CM4. It provides a robust solution for LTE Cat 1 telemetry, cellular triangulation (LBS), and precise GNSS tracking, making it ideal for IoT endpoints, industrial monitoring, and smart metering.
Cellular Core: Powered by the SIMCom A7672S (LTE Cat 1) for reliable 4G data and SMS.
Dual SIM Support: Maximizes network redundancy with both a Physical Nano-SIM slot and an onboard eSIM.
Dual Communication: Supports data transmission via USB Type-C and Standard UART.
Integrated RTC: Onboard Real-Time Clock with battery backup for accurate localized timestamping.
Power Efficiency: Operates on a wide 12/24V DC input range, suitable for industrial power rails.
The PiHAT interfaces with the Raspberry Pi GPIO for critical power management and logic switching:
Power Key (PWR): Operates as a momentary toggle to boot or shut down the baseband processor.
Hardware Reset (RST): Triggers a hard reboot to clear unresponsive states.
SIM Select: A dedicated GPIO toggles the active data lines between the Physical SIM and the eSIM.
GPIO Pin Mapping:
| Function | Pi GPIO | Header Pin |
| Power Key (PWR) | GPIO 17 | 11 |
| Hardware Reset (RST) | GPIO 27 | 13 |
| Module Enable (EN) | GPIO 22 | 15 |
| SIM Select | GPIO 05 | 29 |
