Orqa FPV.Connect support

[jonas-koeritz]

Adds the option to use an ESP based receiver in place of the Ghost Atto as a backpack on the FPV.Connect module. Configure the Goggles as if the Ghost integration is used (enable SPI mode for RapidFire, Enable Ghost Integration, Bridge solder pads on the back of FPV.Connect etc.).

The Pinout doesn't match and the Rx might need 5V to function. I will upload pictures and some documentation on how to connect the Rx correctly. I didn't want to include a SoftwareSerial dependency for something that needs soldering anyways.

Special thanks to @Igor-Misic for the captures of the original Ghost integration!

[jonas-koeritz]

Added some documentation https://github.com/ExpressLRS/Backpack/wiki/Orqa-FPV.Connect-Wiring

[jonas-koeritz]

Accompanying blog post: https://blog.jonaskoeritz.de/2022/06/20/expresslrs-integration-for-orqa-fpv-connect/

[JyeSmith]

Very cool and thanks for the write up! and you to @Igor-Misic!

I asked Orqa about this a while back but they didnt want to play with us LOL

Does ghost/connect have the ability to start/stop DVR yet?

[JyeSmith]

@jonas-koeritz have you looked at the pinout on the ribbon cable, and do the Backpack pins trace straight back? If you are on discord please ping me. Itll be easier to chat there.

[JyeSmith]

And now we wait...

https://orqafpv.freshdesk.com/support/discussions/topics/48000564048

[jonas-koeritz]

They would need to add this to Ghost. Gonna probe the module later, I think the Connect thing isn't even playing a role in this.

[nightflasher]

the picture in the wiki isn't clear for me, maybe for others too. can you do another picture where the RX and the fpv.connect are connected with colored lines? instead of using a rx, you could have an HM EP82 or an ESP-M3 (needs 3v3)?

[jonas-koeritz]

Do you know of a good software to create a clearer graphical representation of the connections? It would certainly be possible to use another module for that purpose, I used the Rx because I had it at hand and didn't want to buy additional hardware.

[JyeSmith]

I have a Connect arriving in a couple of days. I'll grab some more pics.

[nightflasher]

I've made one for the ttgo variants with gimp, m$ paint is fine too.

[nightflasher]

as i understand the wiring diagram, i've created a quick'n'dirty version - delete it, if it's wrong. which backpack target should be flashed? The ESP-M3 in this case is powered by 3v3.

[jonas-koeritz]

@nightflasher That diagram is correct, as long as the module runs on 3.3V. The additional wire on my photo is used to get +5V to the Rx. The targets I added to the codebase are called "Orqa_ESP_RXBackpack*", I don't know if changes are needed to accomodate the ESP-M3 as I don't own that module.

[JyeSmith]

Wiring of a Jumper Rx.

[JyeSmith]

Working well with the Connect. Itll be super nice once there is DVR control!

Thanks for the PR 😃

[nightflasher]

What about DVR start/stop?

[jonas-koeritz]

DVR control isn't supported by the Ghost integration by Orqa. So it is currently not possible through ELRS either.

[nightflasher]

Damn it! Why? What are they doing over there at orqa? That was the main reason I've initially bought into ghost and orqa...so still waiting.

Nice work anyway!

[JyeSmith]

@jonas-koeritz lets get this rebased, Wezs comments addressed and merged!

[JyeSmith]

@jonas-koeritz do you have time to finalise this PR?

[jonas-koeritz]

This should be mergeable now :)

[jonas-koeritz]

If it turns out that the looping approach is more stable for others this can easily be added back in (removed it in https://github.com/ExpressLRS/Backpack/pull/70/commits/e7e983608d05d8a97cb1d0c3ae6e9b4f3129ae61)

[JyeSmith]

I did a final flash and check, looks good.