Convert Typhoon H to PixHawk 6C Flight Controller

[1midniterider]

Thanks for the info. We're you able to test the SR24 on the DSM port, yet?

As for the BEC, I've looked at a bunch of them. Some don't seem much larger than a thumb nail. I'll check out the one you suggested.

 

[1midniterider]

I decided on this Pololu 3.3V, 2.5A Step-Down Voltage Regulator D24V25F3

 

[h-elsner]

Thanks for the info. We're you able to test the SR24 on the DSM port, yet?

Not yet. I have started to set up two FCs: Pixracer V1.0 and Pixhawk4.
The latest FW is no more supporting the ESP01 WiFi module on Pixracer. I took some time to bring it back to work.

Now I'm read to start with SR24 - need some wiring. The DSM port has the disadvantage that it has no back channel for (Yuneec legacy) telemetry. I will try to use the FrSky UART for SR24.
I found something I have looked for in the past:
RC_INPUT_PROTO -> this can be set to ST24 instead of AUTO. Maybe this is a way to force the full functionality for receiver SR24
RC_PORT_CONFIG -> redirect to a free UART channel with Rx/Tx instead Rx only.

I wiil play with this next...

 

[1midniterider]

Please let me know how that goes. I'm still waiting on some parts. Shipping delayed...

 

[h-elsner]

I have tested first with DSM port on Pixhawk4. This works, but no telemetry on ST16. It is possible to send MAV messages via MAYbridge to QGC. I will check if a ST16S can receive this. If so then the back channel over SR24 is not needed, telemetry can obtained from WiFi.

 

[1midniterider]

Fantastic!!! Will this still require using the st24 module?

 

[h-elsner]

Yes, it still uses SR24 receiver to receive data from the 12 channels (sticks, switches). I have assigned landing gear, flight mode switch, no actuators so far.
A quick test shows that ST16S with Autopilot app from H Plus receives basic data via WiFi: voltage, num sats, GPS fix velocity, height by using a MAV bridge on TELEM1.

 

[1midniterider]

That is good to know... Did you need to make customized firmware to get it working?

 

[h-elsner]

No. You have only set some parameters depending on what port you want to send telemetry. See last page in attached file.

Just to illustrate what I have done, here is my test setup:



Attached: How to setup a MAVbridge.

 

[1midniterider]

Now that I've taken the TH apart, I'll reconnect enough of it to verify the bind of the SR24 receiver.

 

[1midniterider]

Yes, it still uses SR24 receiver to receive data from the 12 channels (sticks, switches). I have assigned landing gear, flight mode switch, no actuators so far.
A quick test shows that ST16S with Autopilot app from H Plus receives basic data via WiFi: voltage, num sats, GPS fix velocity, height by using a MAV bridge on TELEM1.

Was the SR24 already bound to the ST16S? Or did you bind it afterward?

 

[h-elsner]

WiFi telemertry works independent on SR24. And yes, SR24 was not bound to this ST16s but to another this time switched off ST ST16.

 

[1midniterider]

So after wading through a bunch of documentation on building a PX4 development... I finally hit on the correct link.... It would have way easier to simply say use docker and be done with it? Not that I really need to build custom firmware but, just in case.