Tad-dah!

By L0stB1t on May 18, 2020

8  592  7

My first own build, using an Armattan Tadpole frame. It's quite similar to my GepRC Phantom, just some higher quality components.

It's a tad (pun intended) heavier than the Phantom but flies just as well because the motors have a bit more punch. The frame is very sturdy but there's not a lot of space, though I managed to cram a Lucky Box in (a real must-have if you're asking me).

Here's some footage of the first flight:

Photos

Discussion

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dafunk   May 22, 2020  
1

nice work overall, its clean and neat !
I have the same issue with my tadpole... the stack is too high and it touches the battery straps
frame vibrations are transmitted to the stack :/
a bad crash could damage the stack via the lipo stack

L0stB1t   May 22, 2020 

Thanks! I've actually shortened the bottom standoff rubbers so the stack fits better. Putting the screws in from the top I also won some space because that buttonhead is much flatter than the nut. Plus I cut as much hairs off the battery strap as I could (using diagonal cutters) so the VTX still gets some room to breathe.

I agree that the frame transmits too much vibration to the stack, I'm seeing quite some D-term noise in the Blackbox logs: https://intofpv.com/t-armattan-tadpole--11710 . I like how you modified your frame to soft mount the entire stack, that's exactly how it is on the GepRC Phantom.

I have a bunch of extra standoff rubbers and rings on the way from China, when I get them I hope to figure out a good way to reduce vibrations as much as possible...

L0stB1t   May 23, 2020 

I have now improved the vibration damping of the flight stack quite a bit simply by using longer screws and using the pieces of the standoff rubbers that I cut short. Full details and info about the PID tuning here: https://intofpv.com/t-armattan-tadpole--11710

Jayembee67   May 21, 2020  
1

Excellent stuff. I'm not sure what it is about the Tadpole frame, but it really makes for some splendid flying machines. One addition I would stroingly recommend, however, is a Lantian 720p DVR module, if you can get hold of one. It fits behind the stack, only weighs 2.3g, and makes the post-flight video a good deal better (I did post a video but it unpacked it, and that seemed rude, but you can see it here: https:// youtu.be /pysYvhPDoKQ - without the spaces).

Also, I have to ask, is your icon really the Marain glyph for 'eh' but with a bit missing, or have I just read far too many Culture novels...? ;-)

L0stB1t   May 22, 2020 

Thanks for the suggestion, actually I have an HMDVR-S on the way which I intend to uncase and fit in the Tadpole. Your video is awesome, nice quality and great flying!

My avatar is a glider from the game of life (https://en.wikipedia.org/wiki/Conway%27s_Game_of_Life) - just a hacker/geek kind of thing :)

Jayembee67   May 23, 2020 
1

Oh excellent! Yes, you won't regret adding a DVR, it really adds a lot to the machine!
And haha, OK, yes of course. I haven't thought about Game of Life in a long time; I think the first time I saw it was on a TRS80 clone (which dates me rather). I didn't realise that the various stable and meta-stable forms had names and that there was a whole branch of research into them, although now I am not surprised. I have learnt something today, thank you! :)

L0stB1t   May 22, 2020  

This kwad loves trees:

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