hello everyone,

for the fear of sounding like a broken record, i am mustering the gall to ask what probably has numerous tutorials on youtube by now! for fear of equally ruining or bricking my hardware due to incorrect setup, i will take all the flak coming my way from the community despite sounding like a broken record. so please bear with me as this may also help relative newbies who may be in the same boat.

first off i presently have the dji flying potato rtf combo. the quad is loaded with the drone-hacks software which unlocks every restriction making the quad more enjoyable to (responsibly) operate! it underwent a firmware rollback before installing the DH hack. my goggles and rc controller 2 are still i
on stock firmware ending in 06.06 from the last time i checked.

here is the Q&A:

1. i am buying a betafpv xknight 35 bnf with caddx vista onboard running ELRS. if i operate everything in stock configuration, what OSD elements can i expect to see on the goggles v2 without installing any fpv.wtf hack? while it would be nice to have the full betaflight OSD via hack, i am ok having a rudimentary OSD with LQ, RSSI, pack voltage, cell voltage only which i find essential. i assume obviously HD video link quality is displayed by the goggles v2 at this point??

2. if i do need to install the fpv.wtf hack even if only to have these basic OSD elements, please recommend the best youtube tutorial as some can be obscure and lacking in detail.

3. as for the stock caddx vista, i assume it runs CE mode by default since only the USA runs FCC mode? what do i need in order to unlock the caddx vista to run full FCC mode? and keep it running that way indefinitely?

4. i am also considering to operate the quad using the (black) dji fpv controller 1 since the caddx vista also has onboard rc link capability. does anyone here have any experience using this remote? i thought this option will grant native full OSD via caddx vista/dji being compatible gear.

again your most valuable inputs are most appreciated! cheers!

My noob input:

1. Pack voltage is displayed by default on the Vista, I don't think you can turn that off. If you do enable pack voltage in Betaflight, then you'll see it twice. If I remember correctly, OSD on DJI can diaplay RSSI, cell votlage, altitude, GPS coordinates, distance to home and a few more I don't remember or use myself. Video link quality is displayed in bitrate.

2. Can't help much, have not done this myself. Here is at least some info on rooting but maybe you've already read this: https://oscarliang.com/fpv-wtf-root-hack-dji/

3. Oscar explains it better than I could: https://oscarliang.com/dji-fpv-system-fcc-700mw/

4. No experience with DJI remote myself, but OSD has nothing to do with which remote you use. It's the Vista firmware interaction with Betaflight that handles OSD part.

(12-Jan-2023, 10:28 AM)Mike C Wrote: My noob input:

1. Pack voltage is displayed by default on the Vista, I don't think you can turn that off. If you do enable pack voltage in Betaflight, then you'll see it twice. If I remember correctly, OSD on DJI can diaplay RSSI, cell votlage, altitude, GPS coordinates, distance to home and a few more I don't remember or use myself. Video link quality is displayed in bitrate.

2. Can't help much, have not done this myself. Here is at least some info on rooting but maybe you've already read this: https://oscarliang.com/fpv-wtf-root-hack-dji/

3. Oscar explains it better than I could: https://oscarliang.com/dji-fpv-system-fcc-700mw/

4. No experience with DJI remote myself, but OSD has nothing to do with which remote you use. It's the Vista firmware interaction with Betaflight that handles OSD part.

thanks for the inputs Mike C! 

if what you mention in #1 above is there by default on the caddx vista OSD then i can live without the hack to get full betaflight OSD. i have seen Oscar’s tutorial some time ago, will review more intently now that i have hardware coming that needs attention. 

as for the dji remote i would also like to find out the quality of its rc link in handling distance and obstruction. 

cheers!

You don't need to fpv.wtf root explot and install WTFOS on your DJI FPV Goggles and the Vista if you want Betaflight OSD elements in your DJI FPV Goggles. That hack just gives you the raw (and complete) native OSD that Betafight has provided to analogue systems for years. If you just make use of the standard "Custom OSD" in the DJI FPV Goggles they will still read a certain subset of Betaflight values (over the MSP data connection) and display them in the goggles. The list of supported "Custom OSD" element values are detailed below. Also be aware that the "Custom OSD" option only supports one (the first) profile, so only the first tick box of the three tick boxes shown in the OSD tab of Betaflight Configurator applies that OSD element to the DJI FPV Goggles.

if all those items highlighted in yellow would be avail via the custom OSD in the goggles v2 then it seems the vital item i would miss is the LQ only. seems i just have to content myself with RSSI.

The DJI FPV Goggles don't support the native Betaflight LQ OSD element but they do support the RSSI OSD element. The way to get the LQ value into the DJI FPV Goggles is to pass the LQ value across to the DJI FPV goggles in the RSSI OSD element. This means that while it is the RSSI OSD element that you see in the goggles, that OSD element actually contains the LQ value and not an RSSI value. To configure that for ExpressLRS, run the following commands in the CLI tab of Betaflight Configurator...


There is also another way to get LQ into your DJI FPV Goggles if you are running Betaflight 4.3.0 which is detailed in another thread HERE but it's a bit more involved so I would just use the method I put above which is good enough for most people.

(13-Jan-2023, 01:54 PM)SnowLeopardFPV Wrote: The DJI FPV Goggles don't support the native Betaflight LQ OSD element but they do support the RSSI OSD element. The way to get the LQ value into the DJI FPV Goggles is to pass the LQ value across to the DJI FPV goggles in the RSSI OSD element. This means that while it is the RSSI OSD element that you see in the goggles, that OSD element actually contains the LQ value and not an RSSI value. To configure that for ExpressLRS, run the following commands in the CLI tab of Betaflight Configurator...

Code:

set rssi_channel = 15
save

There is also another way to get LQ into your DJI FPV Goggles if you are running Betaflight 4.3.0 which is detailed in another thread HERE but it's a bit more involved so I would just use the method I put above which is good enough for most people.

oh i shall keep this one in mind during set up! many thanks!

follow up to this inquiry!

as i have the dji flying potato with goggles v2 on hand, i realize the old caddx vista and full size air unit are both fully compatible with the goggles v1 being single-band at 5.8gHZ. pardon the newbie question but what are the things i have to do in order to optimize the goggles v2 to operate with either of the earlier digital vtx models? cheers!

btw i would be reluctant to do any major hardware upgrades and would prefer keeping things seamlessly operate between the dji potato and the diy quads.

(19-Jan-2023, 03:22 AM)hawk01 Wrote: as i have the dji flying potato with goggles v2 on hand, i realize the old caddx vista and full size air unit are both fully compatible with the goggles v1 being single-band at 5.8gHZ. pardon the newbie question but what are the things i have to do in order to optimize the goggles v2 to operate with either of the earlier digital vtx models? cheers!

btw i would be reluctant to do any major hardware upgrades and would prefer keeping things seamlessly operate between the dji potato and the diy quads.

The DJI FPV Goggles V2 with the stock DJI antennas fitted to them work perfectly fine with both the potato and DIY builds which use an Air Unit / Vista. The stock antennas on the V2 goggles are dual-band 2.4GHz / 5.8GHz antennas. For the potato, both the 2.4GHz and 5.8GHz bands are used, but for the Air Unit / Vista only the 5.8GHz band is used, so the stock dual band antennas can cope with both scenarios.

If you are flying both the potato and DIY quads and you're not doing long distance, then I would just stick with the stock dual band antennas. If you rarely fly the potato or you are flying long distance you can fit 5.8GHz specific antennas (including patch antennas if desired) to your goggles for flying your DIY quads with but you would need to swap them back over to dual band antennas again whenever you fly the potato.

(19-Jan-2023, 10:19 AM)SnowLeopardFPV Wrote: The DJI FPV Goggles V2 with the stock DJI antennas fitted to them work perfectly fine with both the potato and DIY builds which use an Air Unit / Vista. The stock antennas on the V2 goggles are dual-band 2.4GHz / 5.8GHz antennas. For the potato, both the 2.4GHz and 5.8GHz bands are used, but for the Air Unit / Vista only the 5.8GHz band is used, so the stock dual band antennas can cope with both scenarios.

If you are flying both the potato and DIY quads and you're not doing long distance, then I would just stick with the stock dual band antennas. If you rarely fly the potato or you are flying long distance you can fit 5.8GHz specific antennas (including patch antennas if desired) to your goggles for flying your DIY quads with but you would need to swap them back over to dual band antennas again whenever you fly the potato.

finally got a bit of precious wisdom over this concern. as a follow up:

1. in keeping the stock goggles v2 antennas for use with the potato and diy quads, what unobstructed max range could i expect without doing extreme distance flying which require dedicated 5.8ghz antennas?

2. in flying the diy quads is it ok to just leave the goggle channel settings to auto instead of manually selecting 5.8ghz for good measure?