I have a quick question. Have any of you guys ever used a Ultrasonic sensor distance measuring module with an arduino? I have an idea for my cemetery gates that I want to attempt. I'm wanting them to slowly open as someone approaches and slowly close as the person walks away. A guy I work with told me to try to find a "ping" sensor. When I googled it, one of the links was for a ultrasonic sensor distance measuring module. I'm wondering if that will work with what I'm wanting to do.
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