Has anyone configured and run this on their drone yet? After spending an hour looking for my drone in a field last weekend, I decided that it would be a very useful idea to configure it. I spent a few hours setting it up and think I have all my parameters set in betaflight as all the videos state.
I am just too nervous to press my failsafe binding as I don’t want it to fall out of the sky or bash into the ground. If anyone has run both yet, could they give me the confidence to push the button?
Yeah - I have it set on all my GPS equipped quads. You can test the RTH on its own before going for a full radio loss test (add rth to a radio switch).
Any chance I could bother you to sanity check my settings? If I PM you a screenshot, could you let me know anything that you think might be dodgy?
I’ve got my shoulder switches configured for RTH and the other to failsafe simulation.
Keeping it on the forum is best, as it will help others
Here you go. I am inside at the moment without a fix but that works well outside with the pack connected. Each mode uses a specific AUX. Currently using my boxer shoulder buttons for Failsafe and GPS Rescue.
I tested my angle mode throttle positions yesterday and recorded the following on the boxer and there relative positions in betaflight on the receiver tab. I just went into angle mode and hovered and found ideal speeds for slowly ascending and descending.
Hover -50 = 1245
Steady upward -35 = 1320
Steady downward -65 = 1165
Modes:
Failsafe
I guess that last bit at the bottom of the no fix = disarm on failsafe scares me the most. I was getting 22 satellites yesterday while testing so guess thats ok? Can I confirm that it actually wont disarm on failsafe somehow other than it having a home direction arrow and a distance from home marked?
looking good - few things
I would reduce the max angle to something like 25 degrees - 45 means the quad will speed up quickly when testing rth and it may not be the easiest to assess it is all going well (you can increase it back after the test if you feel you need more speed on the RTH journey)
I always use the ‘Max altitude mode’ - so the quad first climbs to the max altitude of the flight before returning home (and avoid possible obstacles on the way)
The “allow arming without sat fix” is a security.
With it enabled - it is up to you to remember that if you do not have a sat fix when you arm - the rth will not work
With it disabled - it forces you to wait for the GPS to get a fix before you can even arm the quad (22 is plenty enough - the default min for a fix is 6 sats as shown on the settings)
I usually test the GPS rescue (after a quick test of Angle mode) on its own from a bit of height so that I can hopefully switch if back off quickly enough if something does not go as expected)
I never tried to use a momentary switch for those though (the right hand side shoulder switch is momentary on the boxer)
In my experience - the main use of RTH is when you loose VTX connection - so you want the GPS rescue switch handy (I have it on my right hand side 3-pos switch on my boxer - alongside Angle mode).
I hope this helps 
That’s really great, thank you for The input. I think I’ll give it a test run this Weekend.
I have have ‘The “allow arming without sat fix” is a security.’. Then I have a USB battery pack to power the flight controller via usd to get a fix.
Get you - find it in under an hour! (I think days is my record)
Without teaching you to suck eggs - make sure you have telemetry on your receiver so you can either so the last GPS position or use the ELRS signal strength to home in on the drone.
GPS rescue is wonderful - honestly. I landed my drone at the last big meet - with no video using the fail safe.
Yeah, I was considering that might be a possibility on the radio. My telemetry only gives me a strength indicator RSSI. I thought it might be possible to do some manual triangulation as I wandered around the field But it doesn’t seem very easy to do as the strength indicator with the default antenna is always really good if the drone is within 1 km .
However, as it turned out when I lost my drone, it’s because the XT 60 connector disconnected mid flight. The only thing that would’ve saved me is having the SD card in my goggles, which I now do. It annoyed me enough though to want to implement all the rescue options.
Tested the RTH today, flawless! Thanks @Cedric
