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

[Simon Wilks]

Hi Chris G,

Did you work it out? I have one that is the same type as yours and
experienced the same problem. I tried all kinds of things and could
not get it going. I ordered a new one from ppzuav (the other one was
not from them) and it worked perfectly.

--Simon

On Thu, Jan 6, 2011 at 3:58 PM, Balazs GATI <address@hidden> wrote:
> 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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>>>
>>>
>>>
>>> --
>>> .
>>>
>>
>>
>>
>
> --
> Balazs GATI, PhD
>     Department of Aircraft and Ships
>     Budapest University of Technology and Economics
>
> Address:   Budapest
>          Stoczek u 6. J. ép. 423
>          1111
> Tel:       +(36)-1-463-1960
> Fax:       +(36)-1-463-3080
> Homepage: http://rht.bme.hu/~gatib/
>
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