Appendix
External sensor connection method
In addition to the ultrasonic module socket and the servo jack, the PS2X&Motor Driver Board also
reserves 10 sets of expansion pin interfaces, of which 6 are general digital I/0 interfaces and 4 are I2C
control interfaces. These expansion interfaces can be used for external connection of various sensor
modules, such as infrared obstacle avoidance modules, infrared tracking modules and other common sensor
modules that can make your products more powerful and functional.
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