ET-STM32F103 is ARM Cortex-M3 Board Microcontroller

that uses 32-Bit 64PIN (LQFP) Microcontroller

No.STM32F103RBT6 from STMicroelectronics. Resource

systems internal STM32F103RBT6 are quite perfect and

suitable for learning or applying to many projects well.

If user can learn and understand how to use resources

internal MCU well, it makes user can additionally modify

and develop more applications because hardware system of

STM32F103RBT6 have already included the necessary

components in the single MCU such as USB, SPI, I2C, ADC,

Timer/Counter, PWM, Capture, UART and etc