I've used these ultrasonic sensors. They have a range from 0 to 254 inches, with a 1 inch resolution. Pulse width, analog, and serial outputs in a small package. This guy did a really nice job on the design.
Hope this helps.
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- Sat May 06, 2006 7:17 pm
- Forum: General Discussion
- Topic: 7 segment display current limiting resistors
- Replies: 21
- Views: 4551
Hello Mr Al, I'm new here and this is my first post. I noticed you had allowed for a 0.5 volt drop for the 7447. I looked at the data sheet and didn't see anything concerning a voltage drop on the output. Please let me know where this is stated in the data sheet. Thanks in advance, Ken P.S. If anyon...