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Naze32 + PPM (Radiolink AT9)
#16
(29-Apr-2017, 09:48 AM)unseen Wrote: Spot on. If it was PPM, an inverter would make it stop working.

Maybe the OP actually purchased an SBUS to PPM converter? That's a useful compromise if you have a flight controller that doesn't understand SBUS, but it is a horrible compromise to take a protocol with 2ms latency and convert it into one with over 20ms latency when all that's needed is an inverter.

flabombarda, can you post a link to the cable that you purchased?

Hi unseen, 

Here is the link of the cable I have.
https://www.banggood.com/FrSKY-SBUS-to-C...kQodSBoGbA


It converts SBUS input (receiver) -> CPPM to FC
Is this the "wrong" one ?
Thanks
Reply
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#17
(29-Apr-2017, 02:39 AM)RENOV8R Wrote: I'm not trying to be impolite, but your post doesn't make sense.  Are you sure you're using the R9DS?  As I said in a previous post, it only outputs sBus and PWM signals, NOT PPM.  If you could post a pic of your receiver and flight controller connections. I'm sure we can get you in the air quickly.  I have a feeling your receiver isn't connected correctly

http://www.radiolink.com.cn/doce/product...l-120.html

No worries, I´m sure this is the receiver. I understand it doesnt work with PPM. It sends sbus, and the cable I got converts it to CPPM, this is why it´s working.
Now the question is: Is this a good implementation ?

Thanks
Reply
#18
(01-May-2017, 01:41 AM)flabombarda Wrote: Hi unseen, 

Here is the link of the cable I have.
https://www.banggood.com/FrSKY-SBUS-to-C...kQodSBoGbA


It converts SBUS input (receiver) -> CPPM to FC
Is this the "wrong" one ?
Thanks

As I suspected, you got a cable that converts SBUS to PPM with a little microprocessor.

Obviously, it will work and as a beginner, you won't even notice the fact that you have taken a really fast protocol and turned it into one that is ten times slower. Seeing as you have it now, you may as well use it!

All you really needed was an SBUS inverter cable. If you can solder, making one yourself is very simple, as Painless360 shows in this video:

Reply


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