Hardware connection

Circuits

Hardware connection for Raspberry Pi 3B:

Hardware connection for Raspberry Pi 3B

Raspberry Pi 3B，GPIO and wiringPi pin usage defination, required to be modified given different GPIO layout:

#define HALL 0
#define SONAR 1
#define pinInHall 1
#define pinOutHall 4
#define pinInSonarOne 24
#define pinOutSonarOne 23

Hardware connection for Raspberry Pi 4B:

Hardware connection for Raspberry Pi 4B

• This hardware connection is for Raspberry Pi 3B / 4B, if you do not use this type, you should connect GPIO according to your version.

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