4 Jun
2013
4 Jun
'13
1:44 p.m.
I got this stuff at an auction for 12 euro. It's an Z80 based measuring
device and a depth sounder transducer. You can see the pictures here:
Although the Z80 based device is on-topic, I am particularly interrested
to find out how to use the depth sounder. It has only 2 wires, so I
assume it is some sort of element that is both an actuator and a sensor?
IIRC, most of those depth sounders used a piezo transducer. And that it
was common to use one transducer for sending and sensing. You sned a
'blip 'to it, then looked for an output signal indicating an echo from
the bottom of the water, or from some fish, or...
Anyway, my guess is that the depth sounder unit is just the transducer,
all the electronics are in the Z800based part. Perosnally I'd
reverse-engieeer the circuitry the transducer conencts to to get a better
idea of how it is driven and sensed.
-tony