help me with this I'm hoping for more information about how to run and see what happens when it plug up be side a light going off and on.
Post more details.
Code, schematic, expectations, observations
(Seriously, read back what you wrote and imagine someone else reading it)
This makes no sense. You mention ultrasonic sensor in your title then talk about a light. Ultrasonic sensor uses sound and the code should be pretty simple. Post your sketch and make some sense and you will get some help.
Language problem???
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