[sz]

Hello,
I'm using ULRS for my RC models. With ULRS 2.x LP doesn't recognize the PPM signal. Probably because of a short frame end of just 3ms. Ardupilot has no problem.
Is there maybe a way to get LP to work with ULRS? Would a feature request or issue be reasonable?
Thanks,
Sebastian

[f5soh]

Hi, welcome.

Please try the firmware attached with your CC3D.

You should use rescue for flash:
- disconnect board
- hit rescue button
- connect board
- Open button and browse where you saved the file attached
- flash

Anyway, register and create a Jira ticket here: https://librepilot.atlassian.net/projects/LP/issues

[sz]

thank you for your quick replay!

I installed your firmware, but it also can't read the PPM.

I assuming the PPM input on PIN 8.

See also the attached screenshots.


Sebastian

[f5soh]

The firmware i posted should allow 2.7ms pulses.
Try with another "normal" PPM receiver if works ?

Please check the ReceiverActivity, no need to populate the RCinput.

Go to UAVOBrowser > Data > ReceiverActivity

[sz]

The firmware i posted should allow 2.7ms pulses.
Try with another "normal" PPM receiver if works ?

This is my only PPM setup. I have to downgrade my TX/RX. Will try it later.
The Ardupilot on APM can read the PPM. Right now I have both (CC3D and APM) connected parallel.

Please check the ReceiverActivity, no need to populate the RCinput.

Go to UAVOBrowser > Data > ReceiverActivity

please see screenhot. It doesn't look well.

[f5soh]

Is a CC3D or a CC3D Atom ?

[sz]

CC3D

[f5soh]

Maybe you can try to setup the PPM input into the FlexiPort, just to be sure that not a Pin8/hardware issue.

Please create a JIRA ticket.

[f5soh]

How many channels do you send from Tx side ?

[sz]

The old ULRS firmware works.
16 chanels.
I will try the flexyport as input

[f5soh]

Should be 12 channels max

old ULRS firmware support less channels ?

Try reducing the number of channels in your Tx

[f5soh]

Just wanted to test the ULRS beta because i have a Txmodule 100mW but don't work.
No window after COM selection.
Beta software is a 60 days trial version ? 

Scary...

[sz]

Just wanted to test the ULRS beta because i have a Txmodule 100mW but don't work.
No window after COM selection.

I have to start the Software on one PC few times. There will be a new window at some time.

Beta software is a 60 days trial version ?

He says that he want to avoid a buggy version of his software. I assume there will be a stable version without limited time.

old ULRS firmware support less channels ?

yes, just 8.

Try reducing the number of channels in your Tx

I just configured 5 channels on openTX

Please create a JIRA ticket.

I will create a feature request for 16 channels. Like cleanflight.

[f5soh]

We can do like others, but i wonder why 16 channels are needed ?

Try firmware attached.

[sz]

It works!
Thank you for your fast help and precise instructions!

We can do like others, but i wonder why 16 channels are needed ?

For me 8 channels are enough, but the ULRS developer seems to think 16 channels fix are better... I will ask him to optional choose between 12 and 16 channels.

I will still open a feature request via JIRA OK?


Thanks again a lot!