Introduction - If you have any usage issues, please Google them yourself
Connect the HC08 stm32F103c8t6 Bluetooth serial module and mobile phone (Android) via Bluetooth, mobile phone and wireless control stm32F103c8t6 GPIO port control indicator action, while the stm32F103c8t6 GPIO port control indicator after the action will light status through the HC08 Bluetooth module back to the mobile phone APP, and displayed on the APP.