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TelloFPV - The app for Tello FPV, Photo, Video

ihf

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@volate!lo Am I correct that (at some point) you plan to add support to map all of the buttons on controllers like the PS3 Sixaxis as well as adding support for VR goggles for a true FPV experience?
 

volate!lo

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VR is in the works but not progressing as fast as I hoped due to bugfix releases. My commitment was January, and that I think I will keep.
Full support for all kinds of strange/not so strange controllers will follow after that. As long as its recognized by a gamepad tester it should work.
 

ihf

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@volate!lo Based on your earlier post, I know that you don't see any real world application of waypoints or drawing out a flight plan (at least for the Tello), but I wonder if you could give thought to a feature which would automate following the same path as a previous (or saved) flight. In other words, starting at the same point in the same orientation, have the Tello repeat what it did. This would, for example, let you fly around a space, save the flight info and then repeat it. With a button press, the Tello cold then fly from room to room, etc., assuming you did it manually and saved it. Just a thought.
 

volate!lo

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@volate!lo Based on your earlier post, I know that you don't see any real world application of waypoints or drawing out a flight plan (at least for the Tello), but I wonder if you could give thought to a feature which would automate following the same path as a previous (or saved) flight. In other words, starting at the same point in the same orientation, have the Tello repeat what it did. This would, for example, let you fly around a space, save the flight info and then repeat it. With a button press, the Tello cold then fly from room to room, etc., assuming you did it manually and saved it. Just a thought.
This shares the same fate as face tracking. Its a fun experiment but would not work well enough to be useful.
Beside the problems with making sure the initial direction is _exactly_ the same _every_ time as just 5 degrees off is another crashed Tello there isan even bigger problem:
I have a really hard time to see how this would help in creating stunning videos or photos. Its just some cool trick to show a few times and thats it. This is not what I want TelloFpv to do.
Maybe I'm just an old fart with not enough sense of humor left :)

Maybe ask the developer of aTelloPilot. I'd be happy to experiment with such a feature a few times.
 

volate!lo

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This shares the same fate as face tracking. Its a fun experiment but would not work well enough to be useful.
Beside the problems with making sure the initial direction is _exactly_ the same _every_ time as just 5 degrees off is another crashed Tello there is an even bigger problem:
I have a really hard time to see how this would help in creating stunning videos or photos. Its just some cool trick to show a few times and thats it. This is not what I want TelloFpv to do.
Maybe I'm just an old fart with not enough sense of humor left :)

Maybe ask the developer of aTelloPilot. I'd be happy to experiment with such a feature a few times.

BTW: I am a firm believer in waypoints and flightplans. But they need to work!
 

ihf

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BTW: I am a firm believer in waypoints and flightplans. But they need to work!
OK, I get it. Sadly, your goal of stunning videos or photos is somewhat limited by the absence of storage for photos and video as well as the camera and the lack of a gimbal (and no, I don't expect TelloFPV to fix those deficiencies :)

Keep up the good work! You have already stretched the boundaries of the Tello beyond anything that Ryze/DJI intended.
 
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volate!lo

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OK, I get it. Sadly, your goal of stunning videos or photos is somewhat limited by the absence of storage for photos and video as well as the camera and the lack of a gimbal (and no, I don't expect TelloFPV to fix those deficiencies :)

Keep up the good work! You have already stretched the boundaries of the Tello beyond anything that Ryze/DJI intended.
Actually I think with a wifi extender one can do nice recordings good enough for social media. Not impressive on a large screen but for mobile consumption.

And photos I am totally impressed given the size & cost of Tello - I have a 4k Dobby that isn't much better and a Bebop that is much worse.
 

ihf

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I agree that for the money, nothing seems to come close. My biggest problem with the camera has been that when using it indoors, there is often insufficient light for a very good picture or video They tend to be noisy or not sharp.
 

killboy

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I'm ready to buy the app, but I need to know if there is a better video management compared to other similar app (and also original one). Someone can give me an answer?
 

volate!lo

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Most say its better than stock. A few disagree. But only you can decide so try the demo
 

MrSpok

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There are several parameters to set up that I don't understand. Yes, I have a lack of photo-skills. ;)
So I leave all the parameters at standard. And I can't detect any difference.
If you can handle these parameters I'm sure, you can optimize your photos and videos.
For me, standard is OK. I have the copter for flying. Videos are nice, but this is not my focus.
 
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davemgood

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I just downloaded TelloFPV. I look at the drone like a tripod in the sky, catching views that you could not reach before. I bought to Mavic 2 Pro for photo/video. I'm happy to see that you have been working on the video section. If the weather is good, I will give it a try this Saturday. I'll be in touch.

You would like ideas? How about a 120 fps speed of video so when played back it is a smooth slow motion?

UPDATE: Never min. I think that 'firmware' has non-adjustable feature.
 
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volate!lo

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Waypoints, follow me, orbit me, etc will go into another app. Just like obstacle avoidance, 3 axis headtracking, RTH on wifi lost, RTH with battery at 0%, 4k upscaling, and the 30min flight time extender :)
After some serious (!) inquiry I think I have to bring this one back up: The name of this new app will be "JOKE".

The old-school way of doing "RTH on 0% battery" is: walk to the impact side, collect the bits & pieces, and head back back home.
 

optimist_prime

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Hi volate!lo

I've been looking around for an entry point into drone photography that's relatively low cost and risk. The Tello looks like a good starting point and I was really pleased to see that someone had written an alternative to the Ryze app which looks very limited for camera control - congratulations in creating what looks like a very cool and well-thought-out alternative for driving the Tello. Photography (stills) is my hobby, so I'd like to get the best images I can. On that front, I have some questions -
  • Does the app-to-drone API allow you to manually change the camera ISO and/or the the shutter speed? (I assume the aperture is fixed on the camera). It would be great to have some level of control of the camera exposure, particularly locking it for taking multi-exposures to generate high dynamic range, panorama or super-res (see next question) shots, but choosing an ISO and/or shutter speed would probably clinch my decision to buy one of these drones.
  • Would it be possible to add a 'burst' photo mode that would take a specified number of shots in quick succession? I've been experimenting, with some success, in creating images with higher resolution than the camera's using the process outlined in https://petapixel.com/2015/02/21/a-practical-guide-to-creating-superresolution-photos-with-photoshop/.
  • This one is a really long shot - Is there any way to extract RAW photos from the Tello in order to extract the maximum amount of image information from the camera? I notice that you have a PNG Conversion option for photos in your app. Is the downloaded image from the drone in JPEG format and then you convert the JPEG to PNG, or do you have access to the uncompressed image data and convert that to PNG? I'm hoping the latter, but I'm a realist;)
Cheers
 

davemgood

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Now that TelloFPV has been released on Google Play I would like to invite you to use this thread to get in touch regarding issues, bugs, troubles, ideas. Thank you for keeping this thread focused with as little thread drift as possible ;)

In case you don't know TelloFpv yet, it is an alternative android app to control Tello offering many additional features:
  • Better UI with telemetry
  • "home indicator" showing you the way back home in real time
  • Advanced video options
  • External controllers supported: Gamesir T1d, Parrot Flypad, USB and Blueotooth Gamepads
  • Flexible button & stick mapping, tuning of stick controls (expo, rate and deadzone)
  • FPV Trainer / Master-Student (one controller is student, overruled by input from the master controller)
  • Actually working Autopilots: Return to home, circle a POI (point of interest), Heading lock on POI
  • much more
My goal is to make TelloFPV the app of choice for FPV and video / photo shooting. If you have ideas for new features that fit into this vision this is the right place.


TelloFP is available here:
https://play.google.com/store/apps/details?id=com.volatello.tellofpv

Please test compatibility with your particular phone / controller /drone combination before buying the full app:
https://play.google.com/store/apps/details?id=com.volatello.tellofpv.demo
Volatello, you should see if you could put you Tello App in the Amazon App store. I use CrystalSky and it's a lot easier to download and install the .apk file. I love your app and use it all the time.

dave :)
 

xcrost

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Hi volate!lo

I've been looking around for an entry point into drone photography that's relatively low cost and risk. The Tello looks like a good starting point and I was really pleased to see that someone had written an alternative to the Ryze app which looks very limited for camera control - congratulations in creating what looks like a very cool and well-thought-out alternative for driving the Tello. Photography (stills) is my hobby, so I'd like to get the best images I can. On that front, I have some questions -
  • Does the app-to-drone API allow you to manually change the camera ISO and/or the the shutter speed? (I assume the aperture is fixed on the camera). It would be great to have some level of control of the camera exposure, particularly locking it for taking multi-exposures to generate high dynamic range, panorama or super-res (see next question) shots, but choosing an ISO and/or shutter speed would probably clinch my decision to buy one of these drones.
  • Would it be possible to add a 'burst' photo mode that would take a specified number of shots in quick succession? I've been experimenting, with some success, in creating images with higher resolution than the camera's using the process outlined in https://petapixel.com/2015/02/21/a-practical-guide-to-creating-superresolution-photos-with-photoshop/.
  • This one is a really long shot - Is there any way to extract RAW photos from the Tello in order to extract the maximum amount of image information from the camera? I notice that you have a PNG Conversion option for photos in your app. Is the downloaded image from the drone in JPEG format and then you convert the JPEG to PNG, or do you have access to the uncompressed image data and convert that to PNG? I'm hoping the latter, but I'm a realist;)
Cheers
Exposure control is already implemented and 360 Pano autopilot will arrive anyday. I think Tello takes pic as jpg so raw is not possible. He will correct me if I am wrong but he sleeps now I imagine so I thought I would share what I know.
 

optimist_prime

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.....Also :)

If someone has the interest/inclination/time to post some images comparing the same shot as JPEG versus PNG files I'd be very grateful.
Cheers
 
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optimist_prime

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Exposure control is already implemented and 360 Pano autopilot will arrive anyday. I think Tello takes pic as jpg so raw is not possible. He will correct me if I am wrong but he sleeps now I imagine so I thought I would share what I know.
Thanks. I assume you mean the exposure (EV) adjustment which isn't what I'm after, although if manual shutter speed and ISO controls aren't an option then EV adjustments might still be useful for high dynamic range experimentation. However, if JPEG is the only format available then results probably won't be great.
Cheers
 
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volate!lo

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Hi volate!lo

I've been looking around for an entry point into drone photography that's relatively low cost and risk. The Tello looks like a good starting point and I was really pleased to see that someone had written an alternative to the Ryze app which looks very limited for camera control - congratulations in creating what looks like a very cool and well-thought-out alternative for driving the Tello. Photography (stills) is my hobby, so I'd like to get the best images I can. On that front, I have some questions -
  • Does the app-to-drone API allow you to manually change the camera ISO and/or the the shutter speed? (I assume the aperture is fixed on the camera). It would be great to have some level of control of the camera exposure, particularly locking it for taking multi-exposures to generate high dynamic range, panorama or super-res (see next question) shots, but choosing an ISO and/or shutter speed would probably clinch my decision to buy one of these drones.
  • Would it be possible to add a 'burst' photo mode that would take a specified number of shots in quick succession? I've been experimenting, with some success, in creating images with higher resolution than the camera's using the process outlined in https://petapixel.com/2015/02/21/a-practical-guide-to-creating-superresolution-photos-with-photoshop/.
  • This one is a really long shot - Is there any way to extract RAW photos from the Tello in order to extract the maximum amount of image information from the camera? I notice that you have a PNG Conversion option for photos in your app. Is the downloaded image from the drone in JPEG format and then you convert the JPEG to PNG, or do you have access to the uncompressed image data and convert that to PNG? I'm hoping the latter, but I'm a realist;)
Cheers
Hi there,

I am afraid none of this will work.
The only thing I can change is the exposure. No other value is available for user modification.

I could do quick burst mode, but "quick succession" isn't the right term here because Tello can only handle one photo at the time. So I have to take the photo, download it, take the next. Downloading just one HQ photo can take anywhere between 3s and over a minute depending on the wifi link quality. So much for "rapid".
The good point is: Tello has a very stable hover and doesn't move much so even such a slow burst could probably help.

Tello creates a JPG file onboard, which is only downloaded for storage. We don't have access to RAW files.
Because this JPG file has some broken file header I added the options to re-encode it, which just loads it into a bitmap and saves it as a 100% JPG or PNG. So this PNG handling was just a by-product of fixing this broken JPG header, which caused trouble in some gallery apps.

Cheers!
 
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optimist_prime

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Hi there,

I am afraid none of this will work.
The only thing I can change is the exposure. No other value is available for user modification.

I could do quick burst mode, but "quick succession" isn't the right term here because Tello can only handle one photo at the time. So I have to take the photo, download it, take the next. Downloading just one HQ photo can take anywhere between 3s and over a minute depending on the wifi link quality. So much for "rapid".
The good point is: Tello has a very stable hover and doesn't move much so even such a slow burst could probably help.

Tello creates a JPG file onboard, which is only downloaded for storage. We don't have access to RAW files.
Because this JPG file has some broken file header I added the options to re-encode it, which just loads it into a bitmap and saves it as a 100% JPG or PNG. So this PNG handling was just a by-product of fixing this broken JPG header, which caused trouble in some gallery apps.

Cheers!
Many thanks for the quick response and clarifications. I was hopeful, but in the meantime I had checked the SDK quickly and thought I was being unrealistic about what might be feasible. At the moment I'm thinking that the Tello camera capabilities aren't as good as I'd like, but it still might be a good learning tool while I wait for a new drone with better capabilities at a similar price point.
Cheers
 

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