Quote:
Originally Posted by ronnyking
I'm having trouble with the ultrasonic sensor. Maybe I wired it incorrectly. Is is needed to connect the trigger with 5V in over a 3.3k Ohm resistor? I may have read the shematic wrong.
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There is no resistor. What you are seeing is the resistor for the Temp Sensor. In the diagram the line is actually going over the connection for "Sonar Trigger". A "DOT" would be there if it was connected.