No,? Raspberry Pie B series intelligent power supply serial communication battery voltage inquiry output voltage inquiry running time inquiry voltage threshold setting output on-off control overview: Raspberry Pie 4B is equipped with Broadcom's latest BCM27 1 1 processor, and its performance is 2-4 times higher than that of the previous generation Raspberry Pie 3B+. 4B requires 5V3A power supply, and the ordinary power supply is usually 5V2A. For this reason, we designed an intelligent power supply supporting Raspberry B series, which can be connected with Raspberry Pie through the serial port of extended IO to provide battery voltage data and output voltage data, in addition, it supports Raspberry Pie to control power output and other functions.