Re: [Paparazzi-devel] PPM encoders with non-blinking LED

[Balazs GATI]

Chris!

I have got two PPM encoders (cant remember the version). None of them 
blinks. But one of them definitely works for one year. (The other is a 
spare one: never flown yet.)

Balazs

 Department of Aircraft and Ships
 Budapest University of Technology and Economics
 Twog + EasyGlider + 10 hours flightime in total



2011.01.06. 14:34 keltezéssel, Chris Gough írta:
> Another observation - the "wild jitter" on adjacent servo when JP1
> removed (PPM encoder unpowered) is actually a regular repeating
> pattern.. .
>
> On Fri, Jan 7, 2011 at 12:14 AM, Chris Gough
> <address@hidden>  wrote:
> > PPM encoder is powered from from the reciever (JP1 present). I tried
> > different recievers powered by different BECs (all 5v). Same behavior
> > with a 5A capable BEC, Multiplex IPD receiver and only one 9g servo.
> >
> > I just tried two 5v BECs and JP1 removed. Still no blinking.
> >
> >
> >
> > On Thu, Jan 6, 2011 at 11:55 PM, Eric Parsonage<address@hidden>  wrote:
> > > Chris
> > >
> > > How are you powering the ppm encoder and the receiver ? I think this is the 
> > > most likely cause of the problem.
> > >
> > > Eric
> > >
> > >
> > > On 06/01/2011, at 11:18 PM, Chris Gough wrote:
> > >
> > > > I have a bunch of PPM encoders (ATMega types, v4.3 hardware and
> > > > firmware) that do not behave as expected (from v4.2 manual). The LED
> > > > won't blink, stays solid when powered with PWM input (expected 3Hz
> > > > blink) and stays solid when PWM removed (expected1Hz blink).
> > > >
> > > > The PWM input to the PPM encoder seems OK because it moves a servo
> > > > (and I've tried multiple reciever/servo combinations). I don't have
> > > > ability to test if PPM is coming out at the moment. Reloading the
> > > > firmware doesn't change the situation.
> > > >
> > > > I don't know if it's relevant, but if I install a servo on a Y-lead
> > > > (ajacent to the PPM encoder, i.e. both getting same PWM), then
> > > > removing JP1 on the PPM encoder makes the servo jitter wildly, and the
> > > > servos on other channels of the same reciever jitter a little bit. All
> > > > servos return to normal when the unpowered PPM encoder is
> > > > disconnected.
> > > >
> > > > Did LED blinking behavior change between v4.2 and 4.3?
> > > >
> > > > Chris Gough
> > > > --
> > > > .
> > > >
> > > > _______________________________________________
> > > > Paparazzi-devel mailing list
> > > > address@hidden
> > > > http://lists.nongnu.org/mailman/listinfo/paparazzi-devel
> > >
> > >
> > > _______________________________________________
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> > > address@hidden
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> >
> >
> >
> > --
> > .

--
Balazs GATI, PhD
     Department of Aircraft and Ships
     Budapest University of Technology and Economics

Address:   Budapest
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