This is part of a larger program. For this part, an ultrasonic sensor's reading is taken and displayed on an LCD. As a test, I used the serial monitor. It works: /* HRXL MaxSonar WR TTL serial communication example sketch Ultrasonic rangefinding Original bits by Logan Park, Ph.D., in…

Display repeated twice and other problems

Deva_Rishi December 26, 2018, 11:05pm 4

do you have a pullup resistor on the switch ?

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