Improved CPU performance The overall hardware performance of the CPU is four that of the original. These optimizations sufficient basic guarantees for subsequent complex interaction and control projects. A capacitive touch sensor that returns a digital signal to the :bit like a button. New speaker In addition to outputting sound through PWM on the pin, :BitV2 also has an onboard electromagnetic speaker that can output sound to complete more experiments. The onboard MEMS package microphone provides sound input for the :bit, and there is a microphone LED indicator on the front. The newly upgraded gold finger can better fix the clip. Processor: Nordic semiconductor nrf52833 Memory: 512kb 28kb RAM External chip: NXP KL27Z 32KB RAM Microphone: MEMS microphone with LED indicator Speaker: onboard speaker Extension ports: 25 pins 4 dedicated GPIO pins PWM.I2C, SPI and expansion interface power supply 3 ring pins for attaching alligator clips/banana plugs The interface adopts design I2C bus: internal and external l2C bus Wireless: 2.4GHZ broadcast/Bluetooth 5.0 Power supply: -USB 5V power supply/3V power interface or battery box power supply Indicator light: power indicator light Working current: 200mA Motion sensor: ST LSM303 Programming software: C++, Makecode, Python Type: Development Board Model: V2.2 Purpose: Graphically programmable Python color:Black Material:PCB Package Contents: 1 x Development Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.