[Autopilot] Re: R/C controller question

[Tramm H. <hu...@sw...>]

Brett,

> I've got just a general question about the R/C controller.  We've been
> discussing the additional channel that would control the MUX.  I'm
> envisioning something that just is logic level low/high.  The button or
> switch on the handset would transmit to the R/C heli receiver where the
> signal would be converted into this logic level.  If that's true is
> would hook directly to the MUX control input to select which inputs were
> on.  Is this how it works?

Unfortunately there are no general digital outputs from the receiver.
All eight of the receiver outputs are PWM signals, so we would have
to use something to decode the pulse width to determine a binary
setting for the MUX.

On my 8UAF controller I have three knobs that can be configured
to directly control three channels.  There are also about 400
knobs, buttons and switches, most of which I haven't figured out.

I found a minimal part count (one dual D-flipflop, a transistor and
some random parts) that is independant of the refresh period.  It
might require some tweaking to replace the pot with a fixed
resistor.  I could build one and let you know what settings we
would want.

Trammell
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