![]() Starts the connection to the I/) expander with i2c UltraSonicDistanceSensor distanceSensor(ULTRASONIC_TRIGGER_PIN, ULTRASONIC_ECHO_PIN) Initialize the pins to use for the ultrasonic sensor ![]() We will use XOR with both array so the pin for the digit to show will end up Those output are at 1 in both NUMBERS and DIGITS. The pin for the digit must be to ground. In this project there is no need for input pins, but the library also supports it (including the interrupt pins).
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