Perhaps for a first project a circuit that would open and close a
switch from the signal from a Radio Controlled airplane or car
receiver. Basically a device that can turn something on and off via a
commercial radio control unit. There are units out there that do this
but it sounds like it shouldn't be too hard and is something I could
use.
I don't know much about these receivers (almost nothing, really.) But
my vague memory says that they use pulse coding and are usually hooked
to a DC servo unit that requires something between say 0.8ms and 2.5ms
to indicate a rotation of from 0 to 180 degrees. And I think this
needs to be repeated on something like every 20ms, though I don't have
any idea what happens if it is repeated on faster cycles (I can guess
what happens on slower cycling.) Something like that?
If I got any of that right, then would you like to do something that
reads this millisecond duty and then operates a relay switch based on
some given time threshold? Like, say, >1.5ms?
Jon
