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the affiliate code isn't working for me, I'm only able to get a 7-day free trial instead of 30-days. I'm guessing this is a problem on Brilliant's end but if there is any known way of getting 30-days free I would really appreciate it.
@@jadenotto7239 I'm sorry that's odd, have you previously had a membership or trial with Brilliant? I'll check with them and see if this is a known issue.
@@jadenotto7239 I confirmed with my rep that the offer code is working as expected. If you are a returning user, you may not be eligible for the 30 day trial. If you are still having issues, please contact brilliant support and they'd be happy to help you out. support@brilliant.org
@JeorgSprave over at the slingshot channel has tips on how to make a cheap and easy projectile catch. just need: -medium cardboard box -towel -box knife -tape (optional) -fold in or remove all but one flap around the opening -cut 2 slots into the side of an amazon box about 2 inches or 4cm apart perpendicular to the opening, on the side opposite the remainder flap, -slip a towel into the slots, draped over the middle bit (leave the towel on a hangar to stiffen if needed) -dangle the towels layers like curtains, passed the remainder flap, which you can tape up to make a basin to catch your projectiles that's it, takes 10 to make your first one, and I've made them in just 2min. you can also just cut one larger slot if you have a simple triangle hangar that's longer than the width of the box.
Once again I highly appreciate all 3D printing content creators who openly show their journey through all the failures until they finally archieved a working device. I really dislike it when people act like its just printing, put it together and there it is. Integration hell is something every maker will encounter at some point, usually in everything when its even just mediocrily complex. Many of them will give up out of frustration and I find it important for them to see that even "professionals" have these exact same issues as they have.
There are some changes that are necessary to make. 1. Current limiting. It will jam at some point huring regular use. 2. A jam door and improved belt frame to more easily clear jams. 3. (Not as necessary) Perhaps the dart belts could go at a speed proportional to the fire rate.
instead of a spring system, could you use centrifical force to bring the darts to the outside of the mag? youd most likely have to make the channels for them straight though.
I hope engineering channels such as Stuff Made Here, etc. take on the challenge of refining your current design to work even better. After all, it’s only a matter of time before someone designs a blaster and mag that can do 1000 RPS. 😉
this is such a cool design. once you get it flushed out you should definitely order a custom PCB for it so you can make the body slimmer and integrate everything better. also one suggestion is to make the mag release purely mechanical, while the current design with the servo is really nice, a mechanical one might take up less space and have less weight.
why not go to track fed like a real minigun? they have to use a track that rounds slide on because any other method is too slow or unreliable for feeding. and you don't need extra barrels either like a real minigun does because your barrel doesn't factor in to firing a dart at all (you aren't even using gas expansion to move the darts). i'd move towards a huge carousel that feeds a track into the "action" of your two belt drives, and then a rotating pawl that grabs darts from the track and puts them into the belts, then moves out of the way (exactly how the minigun's action loads). what you have now is like if you deleted the track and the loading system on a minigun and just threw rounds from the carousel into the open action lol
Haha well…AA because it sounds like and has the fire rate of anti aircraft guns and 81 because my smooth brain forgot the mag holds 72 darts not 81. But 81 had a nicer ring so I stuck with it
Hah this is maybe a little too dangerous for kids to use...a 2kW motor spinning the massive mag at 11 revolutions/sec could definitely cause some damage!
also, it looks so good, reminds me of recent US fighter jets with the paintjob to show exactly where components are, but a bit more polished. Awesome design, awesome execution
I think a lot of your problems with jamming at high speeds can be explained this way: When the dart leaves the magazine, it has incredibly downwards momentum. The more darts you're trying to shoot, the faster your magazine, the more momentum. Your darts are a flexible object, and you're only catching them at the tip with your launcher, so the momentum in the bottom is continuing, which then causes friction and jamming. This is also the same issue with the tips being brought upwards and angling strangely. This might be fixed by changing the angle of the drum, either making it horizontal to transfer the entirety of your rotational energy on release into forwards momentum, or diagonal to just cut down on the amount of energy that you're having to mitigate/deal with on the dart when it is released from the magazine. Custom hard rubber darts or solid darts might also solve this issue, but that doesn't seem like an option.
You're exactly right, the darts are moving at nearly 7m/s when shooting at 100/s rate. And they have around 2-3 ms to change directions and extract from the mag, then
@@3DprintedLife I wonder if you could use a harder, thinner dart in order to counteract this issue. I don't have the resources to try this but it would be cool if someone did. The downside is that they would hurt a lot.
@@3DprintedLife I wonder if you could integrate the mag and the feeding belts more closely. right now there a lot of space between them and they don't really join together. maybe you could somehow make the feed belts mesh with the magazine by having cutouts in the mag for the belts to sit.
What if a "force" was added from the back? So, the dart isn't just snagged, dragged, bagged, sometimes making it, other times just causing ones' self to go mad- what if a slight flow of air was being generated by a fan from the back to kinda push it along especially at the higher speeds so that it's not just the front of the dart being grabbed by the shnoz and dragged into criticall velocity like a brat child getting caught stealling by thieir moms at the candy store/ toy store....
@@3DprintedLifehmm i may try to take a old leafblower do something like that, have all the air channel into the feed system, aending the dart forward into a flywheel system like yours, and out of a barrel with the leftover exaust of air or co2 from the blower. Either way im not sure i can really make this possible, but i might try. For i have zero knowledge of programming, but maybe i can make it completely mechanical. Mechanical mags, full speed flywheels (sustained fire may have cooling issues, water cooling or heatsink?
Important note about drone ESCs: Their current rating is based on air cooling. Without cooling, expect them to blow up even below that. And if your throttle signal is jittery as hell, they (or the motors) are gonna pop too
Yeah I expected the heat from not cooling them, but they only run at high load for a few seconds tops so shouldn't burn out. I did discover a bad signal would kill the esc's haha but that was resolved by switching to the teensy!
Yes! More! Perhaps, since you already have the rotating design working, you could make an RPD-style belt inside a drum the same size as your current drum, and make it belt fed? I don't expect it to be nearly as fast, but it would be a fun challenge
@@3DprintedLife Ah nuts. How about a wedge shaped belt to feed better as the round comes down, or even full V-shape to capture the shape of the tip? Do the initial belts need to be that fast? They only need to pluck the round out of the magazine to feed to the next drives, right? Are the belts too long for plucking duty? Belt shape to grab the tip better and not so fast. Let the secondary or tertiary drives accelerate it, type thing. Just throwing thoughts at the wall, cheers all!
the servo allows it to be a smart-blaster, and eject the mag as soon as its empty. which isnt practical but does add cool factor. pretty sure this design does allow for both the wedge and a pull-tab at the back for manual ejection. id be suprised if this isnt already in the design and just not covered.
12:00 Now that I think about it, the way you spin the mag is similar to how a revolver works by spinning the chambers... with that insane fire rate this thing is more akin to a mini revolver autocannon Awesome and scary!
Why didn't you use wide GT belts for the belt drives? Widths up to 15mm are available. Perhaps they would have performed better at such speeds as they don't stretch as much. And if you turn them inside out, the teeth would provide extra grip. Also, a pair of flanged bearings with a regular bearing (or a spacer) between them would work great as a pulley in that case.
I love DuPPa's I2C Encoder and I2C Encoder Mini because it solves all the annoyance with using interrupts to read the quadrature signal and lets you just read off an I2C register
Perhaps consider two belt stages. A slower catch belt feeding into a faster propulsion belt is how I've seen similar mechanisms work well before when the item is flexible.
Here's an idea maybe an RC tank with any variety of strange wheels screws multidirectional drive and a mega dart launcher. The fun bit is some kind of overcomplicated and deliciously over engineered autoloader for the mega dart.
A comment ...this start of it " @ryanpallesen3569 8 days ago I think a lot of your problems with jamming at high speeds can be explained this way: When the dart leaves the magazine, it has incredibly downwards momentum.........." .......made me think ......... What if a "force" was added from the back? So, the dart isn't just snagged, dragged, bagged, sometimes making it, other times just causing ones' self to go mad- what if a slight flow of air was being generated by a fan from the back to kinda push it along especially at the higher speeds so that it's not just the front of the dart being grabbed by the shnoz and dragged into criticall velocity like a brat child getting caught stealling by thieir moms at the candy store/ toy store....
How about giving the darts a dusting of hair spray or a really light dusting of aerosol glue- let em dry so that they are NOT tacky to the touch....more so, you are adding rigidity to the dart which looks like it just crumples at over a certain cadence of the belts.....but then also, just that tiny bit of 'sticky' to utilize that velocity....the foam just ...?? smushes?? if i could put a word together that best describes what it looks like- a big wet kiss from that aunt that leaves you, as a child at a family reunion dying to vacate to any water source to wash te cooties away....poor kiddo..poor darts. Give 'em darts that oooomph they deserve!
A big problem just might be the darts themselves. The darts experience extreme acceleration and changes of movement. The darts just can't take that kind of beating.
Really cool project, maybe a bit too fixated on the 100 darts/sec but that's understandable. I think adding additional features and improving reliability even at a lower rate of fire would've made a better end product, but of course a much less cool youtube video title
I have a question, why didn't you use rubber belts on the belt drive? I don't remember if you explained it in a past video but I feel like it'd be a good idea compared to plastic, also with rubber belts you could have a very small belt side loaded into the drive to get rid of any problem with the belt expanding when sped up. Also for the jamming problem I don't know if it would help but you might be able to have a tube barrel with cut out sides for the belts instead of a open space where the darts can stray off the wanted trajectory, also another person has said the centrifugal forces of the rotating drum might be your problem, but I think this might be the solution to said problem.
I feel like you should’ve not over powered servo might like break sometime soon because of it but if it’s like a gap thing then yeah I would get it but it seems like you wanted to keep it there forever so I don’t know and also you should do like the ultra darts because they are way stronger than the regular dartsbecause they’re like fully filled up with like the strong like foam, but I don’t know he’ll be the best though
this is actually kinda cool but still I think it's still a bit of an over complicated design. Still best one out of the group (not including the moab. that one wins purely on style points).
I love that you can put so much different music on the ESC's. Bluejay is the best firmware for startup songs. Try the Ovonic V2 130C lipos. They are less money then a Tattu, and the same quality. And way better then those CNHL. Black's.
