Re: [Paparazzi-devel] Spektrum Receiver

[Tilman Baumann]

On 13/06/12 14:50, Gareth Roberts wrote:
> Hi Tilman,
>
> > Do you have config snippets perhaps?
> > I can't quite picture how you did that.
>
> It was a long time ago, before I could get a decent radio :)
> I completely misremembered how I did it in the previous email, sorry.
>
> However, looking at a radio file I remembered I did it via messing 
> around with the neutral & max:
> <channel ctl="6" function="MODE"    min="1100" neutral="1500" 
> max="2001" average="1"/> MAN/AUTO2
> <channel ctl="6" function="MODE"    min="1100" neutral="1250" 
> max="1500" average="1"/> MAN/AUTO1
>
> Please let me know if it still works, it may not have been exactly how 
> I did it but it was along those lines.
> Also, this was a long time ago (5-6 years).  Something may have 
> changed in the code since then.

Huh, thanks for digging this out.
But I'm not sure what it will mean. If you could perhaps help me make 
sense of it.
I suppose it's using different ranges on the same channel. To make sure 
the switch lies well in the range.
But between which modes will it switch? I first understood you mean 
between MANUAL and AUTO2. But that does not quite seem to be what it 
will do.

Penny has not dropped yet.

> > True, I think if I see it crash I rather go in manual and try to 
> > glide it down.And the prop is not really a problem in my Bixler as it 
> > is at the back and off the ground.
>
> Indeed - I've only ever broken one Bixler prop.
> In very high winds, at about 30m, the main spar snapped, the wing came 
> off and the spar flipped back round into the prop.
> That Bixler is still flying today with only a replacement spar and prop.
My friend just managed to loose his wings in some high G manoeuvres with 
his Bixler. Seems to be a bit of a weak point.
> If you haven't already, I would definately recommend upgrading the 
> stock prop to an APC 6x4. The improvement is incredible.
Indeed. The whole stock setup is a bit whimsical.
> Also, you can get a Turnigy/FlySky 9x transmitter for £60 if you are 
> on a serious budget. Add an FrSky TX module + receiver and you've got 
> out of the box PPM output.
>
> http://www.giantshark.co.uk/flysky-fsth9xb-channel-transmitter-with-module-p-406149.html 
Isn't that the one that is identical/compatible to the Turnigy 9x? With 
alternative firmwares available.
Great to have a local source for that. Lead times at HobbyKing are too 
annoying.

I suppose you added the V8R7-SP receiver to the list because it is 
compatible and has ppm?
> http://www.giantshark.co.uk/frsky-24ghz-conversion-hack-module-p-405206.html 
>
> http://www.giantshark.co.uk/frsky-receiver-v8r7sp-p-405458.html

Yea, I'm beginning to think that ppm might be indeed more practical.
I love the digitalness of my Spektrum setup. But it is so far causing me 
more headache than it helps.
I bought this Spektrum transmitter when those chinese brands where not 
quite so established. At least I had not heard much about them. Cost at 
least twice as much as a Trunigy and is only five channel.
Don't really feel like spending money on thinks that I already have.
And yes, budget is very tight right now. Would hate to have to wait just