I am interesting in building my own sonar for learning purposes. To do
so, I bought a transmitter / receiver pair, but I have some basic questions,
0) how do you distinguish the transmitter from the receiver, is there
any sign for it? One's back is black and the other has no color (silver). The
one whose back is black has a 'T', standing for transmitter?
1) How do you know which pin is to be grounded?
2) What is the generated voltage on the receiver side? Will I need an amplifier?
3) Is a 5v input voltage right for transmitter input? How long must I hold the current up?
I thank anyone who can answer some of these questions or point me to docs / links / books.
Thanks for helping.