not working with long wires
hello friends
I have tried this ultrasonic sensor with water for that i have connected with a very long wire of 30 mts its not working but its working with upto 20 mts cable so can you please give your valueble suggestions to meet my requirement.
I have tried this ultrasonic sensor with water for that i have connected with a very long wire of 30 mts its not working but its working with upto 20 mts cable so can you please give your valueble suggestions to meet my requirement.
Comments
-Phil
2. Add a 4.7K pulldown resistor to the non-Ping))) end of the cable, between Sig and Vss.
3. Add a local 5V regulator circuit to the Ping))) end of the cable to provide its Vdd, and supply 9V to the regulator over the cable.
The most likely scenario is that the cable is dropping too much voltage, either altogether, or just when the Ping))) fires. In the latter case #1 will help; in the former case, #3 will help. #2 will help to eliminate problems with electrical noise.
-Phil
http://en.wikipedia.org/wiki/Twisted_pair
enjoy problem solving!