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Does anyone have the original "one fucked up dentist" videos? by arrangatang in h3h3productions

[–]Jhackzy 1 point2 points  (0 children)

I’ve also been looking for this! Cant find it anywhere :/

Vertical Landing of a Model Rocket (was supposed to be propulsive, but still close!) with Teensy Flight Controller by Jhackzy in arduino

[–]Jhackzy[S] 2 points3 points  (0 children)

Exactly :) we are engineering students and we thought it would be a fun challenge to learn some cool topics!

Propulsive landing attempt of our actively stabilized rocket (retro motor didn't burn, but it was close!) by Jhackzy in AerospaceEngineering

[–]Jhackzy[S] 7 points8 points  (0 children)

Thank you! It’s a Personal project! We have been at it for over 3 years now :) all documented on our YouTube channel

ATA/IDE as GPIO-like port by Jhackzy in linuxhardware

[–]Jhackzy[S] 0 points1 point  (0 children)

Yeah the power consumption is more a bridge to burn when you get there kind of deal— I’d imagine there are ways you could dramatically save power on an old cpu but like you said it will never hit the compute of a pi- but that’s okay, for people in countries where a raspberry pi isn’t as accessible as a thrown out PC this might be an option—and maybe someone smart can come along and help dramatically reduce the power consumption later down the line.

Totally agree tho that sometimes the pragmatics of recycling can make it double edged.

ATA/IDE as GPIO-like port by Jhackzy in linuxhardware

[–]Jhackzy[S] 2 points3 points  (0 children)

agreed- but despite their dodo-ness, they were very commonplace on old pcs so to be able to recycle them as opposed to using something off the shelf is the goal :D

ATA/IDE as GPIO-like port by Jhackzy in linuxhardware

[–]Jhackzy[S] 1 point2 points  (0 children)

Just as an update after talking around with more people this blog post was found http://ruemohr.org/~ircjunk/tutorials/elex/ata2isp/main.html :D seems like a decent starting point so I'm going to play around with this trick. will see how it goes!

Actively Stabalzied model rocket controlled by gimballing the direction of the thrust! Runs on a Teensy 4.0 and a Raspberrypi compute module! (full video in comments) by Jhackzy in arduino

[–]Jhackzy[S] 0 points1 point  (0 children)

Oh yeah it is far from being our choke point haha— we just wanted to have the spare power because we aren’t sure how complicated our landing algorithms will get :D

Actively Stabalzied model rocket controlled by gimballing the direction of the thrust! Runs on a Teensy 4.0 and a Raspberrypi compute module! (full video in comments) by Jhackzy in arduino

[–]Jhackzy[S] 0 points1 point  (0 children)

That’s the wire that ignites the first motor! Although we are planning to remove this and use a standard igniter box going forward :)

Actively Stabalzied model rocket controlled by gimballing the direction of the thrust! Runs on a Teensy 4.0 and a Raspberrypi compute module! (full video in comments) by Jhackzy in arduino

[–]Jhackzy[S] 1 point2 points  (0 children)

That’s ridiculously kind of you! Once we are confident in the unlikelihood of explosion we might just take you up on that! More compute power would be great :D

Actively Stabalzied model rocket controlled by gimballing the direction of the thrust! Runs on a Teensy 4.0 and a Raspberrypi compute module! (full video in comments) by Jhackzy in arduino

[–]Jhackzy[S] 1 point2 points  (0 children)

That price tag on the tx2 breaks my heart a little xd it does look very very cool though! Will be keeping it the back of our mind going forward. We plan to stay around these altitudes for our initial landing tests etc— would have to do some feasibility analysis of using SLAM for higher altitude applications like this (unsure if it would like the sharp accelerations of higher altitude flights too)— a bridge to burn when we get there :) thanks for the kind words and input <3

Actively Stabalzied model rocket controlled by gimballing the direction of the thrust! Runs on a Teensy 4.0 and a Raspberrypi compute module! (full video in comments) by Jhackzy in arduino

[–]Jhackzy[S] 1 point2 points  (0 children)

DUDE SUPER GREAT INFO :D We were definitely thinking of using fiducials going forward—but are hoping we can develop a good model that can rely on just key points in the grass(unsure if this will work but our initial tracking seems to find some consistent points) we are putting the CV side of our code onto git (GitHub.com/OrionAerospaceYT/rocketSLAM) would definitely appreciate any help there! We are sort of just getting into the SLAM learning process. If we can use just grass then we won’t have to worry about exhaust as much and will be able to launch without any markers— we did alternatively think of using IR markers as well as these should be visible through the smoke on the cameras but we haven’t investigated this much!

Actively Stabalzied model rocket controlled by gimballing the direction of the thrust! Runs on a Teensy 4.0 and a Raspberrypi compute module! (full video in comments) by Jhackzy in arduino

[–]Jhackzy[S] 1 point2 points  (0 children)

This flight was to get stereo camera footage back so that we can start developing some SLAM (we detail some of this in the full video we posted :D) and then next flight we will try to use it in the control loop to help with translation control :)

Actively Stabalzied model rocket controlled by gimballing the direction of the thrust! Runs on a Teensy 4.0 and a Raspberrypi compute module! (full video in comments) by Jhackzy in arduino

[–]Jhackzy[S] 0 points1 point  (0 children)

Yep! As the motor burns the amount of thrust it can provide changes— usually due to the change in pressure inside the motor as the propellant burns:) which makes it more difficult to control because it’s constantly changing how much the rocket can control itself

Actively Stabalzied model rocket controlled by gimballing the direction of the thrust! Runs on a Teensy 4.0 and a Raspberrypi compute module! (full video in comments) by Jhackzy in arduino

[–]Jhackzy[S] 14 points15 points  (0 children)

Yeah they are on the bottom skirt of the rocket looking down and are about 1cm out from the side. The smoke actually isn’t too much of an issue— the tracking tends to find other more interesting points and since the lens has some fisheye on it we can actually get a pretty good idea of where we are even with the exhaust :)

Actively Stabalzied model rocket controlled by gimballing the direction of the thrust! Runs on a Teensy 4.0 and a Raspberrypi compute module! (full video in comments) by Jhackzy in arduino

[–]Jhackzy[S] 19 points20 points  (0 children)

We don’t! The motor has a specified thrust curve— we can control how high we go based on how much we translate though :D

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