Below we determine the connection of each part according to Pico’s pin diagram:
I use a five-wire four-phase motor, so I need to connect four gpio lines to the Pico. Here I choose IN1, IN2, IN3, and IN4 of the drive circuit to correspond to GP9, GP10, GP11, and GP12 on the Pico. , And then the drive circuit also needs a voltage of 5-12V, so here I use the VBUS on the Pico board to provide it with a 5v voltage, and then connect the negative pole of the drive circuit to the GND of the Pico, then this part of the connection is finished.
The following is the connection to the serial screen. There are four sets of UART provided on the Pico board. Choose one of them for connection. Connect the serial screen. The TXP of the serial screen is connected to the RX of the Pico, the RXP of the serial screen is connected to the TX of Pico, and the GND is connected to GND.