The Here3 GPS is a high precision GNSS system, which also supports RTK navigation mode, built with CAN protocol. It is also designed to be dust-proof and splash proof. Equipped with STM32F302 processor, the Here3 provides faster processing speed and better reliability. The Here3 has built-in sensors such as compass, gyroscope, accelerometer, and status LED. It runs on a Chibios real-time operation system. Its open source structure is ideally suited to developers who need specialized requirements on their navigation system.