The Blue Pill board has more than one I2C, UART, and SPI port, which helps in communication with other devices way faster than that of the Arduino UNO board. It has more input/output pins, 12-bit ADCs, more external interrupt pins, higher PWM speed, and many more features. These limitations can be overcome by using this Blue Pill board. As you already know that Arduino UNO board has some limitations when it comes to more complex projects because of its limited Input/Output pins, low-resolution ADC, slower PWM speed and fewer interrupt pins. Unlike, the famous Arduino UNO board, the Blue Pill is a high-performance ARM Cortex-M3 32-bit microcontroller development board that works at a maximum operating frequency of 72MHz.
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