The RGB light group is added which is convenient for users to operate the RGB light group to reflect various information through the on-off and brightness of the red green and blue lights. Support micropython C/C++ Dual-core Arm Cortex M0+ processor flexible clock running up to 133 MHz2 × SPI 2 × I2C 2 × UART 3 × 12-bit ADC 16 × controllable PWM channelsIt has been designed to be a low-cost high-performance microcontroller board with flexible digital interfaces.