Your design is quite productively made. I enjoyed the fact you used some-what everyday furnitures and surroundings into such a phenomenal creation. Although, it’s persistence of speed slightly lacks, but that doesn’t matter right now. Your work is indeed, brilliant.
A very good instruction you've done. Well done. And for those who have a r/c vehicle with an extra channel, the rod could be attached to an extra turning servo or geared down motor, allowing the pole to rotate, therefore allowing the external head to rotate too. Or simply use a r/c tank and turret drive and bond the head turning rod to the turret mount.
I've been wanting to make a real life bb8 and I had that idea with the remote car but I didnt know if this would work... But I'm glad to see that my idea can work! Also your video is generally just so so helpful thank you for this!
Nice try using common parts as a prototype. Cad created parts are really needed in this project to get the tight tolerances for smooth reliable operation. If it were me, I would 3D print almost everything = Lots o work :)
+GuruBrew I still use toy truck's the RC receiver for my version 2 (video out next week, it's been a long road) and DIY dual H bridge circuits but at some point I plan on replacing both with common parts just to try them out. Version 2 still uses only a little 3D printing though: six gears, the head's radar eye and the head's holo projector. Either way you go, lot's o work :).
@sharpchain_1 that depends on how you make the designs. you should know that with 1kg of filament (20$ per kg) you can print a huge amount of things. and since most of the prints are simple, you can cut corners by not using 100% infill and make holes to reduce filament usage. the ball cannot be 3d printed due support issues. but all main parts can be printed.
@@darknessblades "the ball cannot be 3d printed due support issues" I hope you convince you otherwise. Check my channel in a couple days. I'm working on a video about how to print a sphere in using 32 segments which support and align each other.
@@ddegn With the current 3d printers it is possible to print it, but 2 years ago 3d printers where not as good as they where now, due there not being many Community hacks/mods created for many 3d printers
Now that is extremely clever.i always wondered how to get the top to stay in place as the ball moved.i love your design.keep up the good work.i just built a three foot long preying mantis from foam board and although it can't walk,too delicate,the foreclaws actually extend and contract.i made it in honor of my real mantis who just passed away last night on new years eve.good job man!😁
Nice BB-8, just a quick note about doubling magnets, pole need to be ns,sn, or sn,ns if they do not want to go together then it's the right way, keeping them together is the difficult part.
If you ever decide to revisit using a similar rc truck, since there appears to be enough space, you should velcro the auxiliary battery pack under the truck and covering the original battery compartment.
+Critters The truck isn't powerful enough to move more weight. I'm working on a more powerful drive system in version 2 that also weighs more ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-1gWBS70vphY.html.
Instead of making the head lighter, you might consider making the truck heavier, that would not only stabilize it with a heavier head, it would also improve traction. Also, instead of steel bearings you could use buckyballs, bearings made of rare earth magnets.
Already done, making the truck heavier and of course switching to more powerful motors to move that heavier truck. See my video series about version 2 ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-BCXH4AN2aog.html
I LIVE v1 builds. Please keep doing this, if you need some extra time explain why you use nylon bolts, etc. I know it's for weight but learning about materials is cool
The nylon bolts are just for weight, as you say. They tend to cost more than metal ones so it really is just for the weight. As for doing more of this, I subsequently went on to make BB-8 v2 which was a lot more successful. Here's the whole playlist for that one ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-BCXH4AN2aog.html
hello my friend..!! first of all .. you video rocks!! I just write to tell you that i just fix the magnets friccion problem in a easyer way.. all you have to do, is remove the magnets from each corner. from both sides, i mean from the car table and from the cross corners in top of head.. and re installed right in the center on the center post in the car table and outside right in the middle of the cross.. ..!!! that way you will let the rollers ball run free..and never will get stuck..that will solve the fricction problem.. and you can play with the magnet inside high to get a best strength between magnets. i just did it ,and works very well.. once again thank for share you video ...hope this help
+gabriel lada Really! I will try that. Thanks. Do you have two sets of magnets in the middle so that you can make the head rotate? Or does it rotate with just one set? I guess if it's a rectangular magnet then you might be able to turn it with just one magnet in the head and one inside the body.
+gabriel lada I just tried it and it definitely was an improvement. Thanks! Version 2 will have this in mind. My truck is still under-powered though and gets stuck if the head magnet and the ball magnet are too close. If they're too far apart then the head falls off too easily. But it does hold on better when I get it just right. I'd love to see yours if you have any video or photos somewhere.
thank you for take a minute to read my coments..!!! :) about the truck i also resolved that problem , you are right about the truck.. gets stuck if the magnets are too close.. I do solve it putting another extra couple of rollers inside the ball right where magnets were before , in the table over the mast .. that way makes pressure and push my truck the other way ..that helps me to don´t get stuck.!! hope you can try it.. i´ll send you a pics and video of mine by tomorrow.!!
Take Magnets and make a ring out of them add the ring to inside of the globe so whenever the ball rolls the head will have always a magnetic to stick to ! also using some plastic attach the motors and PCB to the plastic so you get rid of plastic body weight ! All the very best ! 😁👍👌
I found a way to make the head spin, you attach a small plastic square to a motors and attach magnets to the plastic square so the head spins hope you try it rimstarorg
the only problem is hot glue with the wires it wastes a lot of motor power soldering is better u know something people easily get away with with in motors
You're welcome. But notice that it couldn't keep a fully shaped head on. It still may work with an RC truck with a more powerful and more massive motor but I'm not certain of that. That's why I then moved on to version 2 (ru-vid.com/group/PLFsZmHTZL-zmztc_P7h2tqLxKJHu0vH1e).
So this is very much like a RC device I've been designing. This might not quite work for the effect you are going for, but, another way to influence the turn capability is to attach an actuated weighted swing arm that throws the center of mass to the left or right of forward motion. Regarding the top piece, vacuform it from thin polystyrene. You know you've always wanted an excuse to build a vacuform machine.
+verdatum Sound like an interesting thing your designing. Vacuforming the head is a neat idea, can give it a lot of definition. And like you say, it's an excuse to build a vacuform machine!
Instead of a truck, how about an rc tank? It would seem to me that differential steering would make it more maneuverable. Also, the turret control could turn the head vs the ball. A plastic tube for the upright should be lighter.
+Colin MacKenzie I'm working on an RC tank drive/differential steering right now for version 2. Here's a Google+ post I made about it last week plus.google.com/116395125136223897621/posts/RLdVErrEoxE (I'd give a link to the post on my facebook page but there doesn't seem to be a way to do it.)
+_Splash_ Stronger magnets would make the head stay on, or just raising the magnets inside. But that has the effect of gripping the structure that has the magnets on it inside the ball to the top of the ball. That strong grip is through the magnetic field, to the magnets under the head, and those magnets pressing hard against the outside of the ball. The truck has to be powerful enough and have good enough traction to overcome that grip. And my truck wasn't. That's why you see it getting stuck sometimes in the video. My version 2 BB-8 overcomes that with more powerful motors and a heavier "truck" for more traction. You can see that one here ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-BCXH4AN2aog.html.
My pleasure. If you're planning to make one then check out version 2, ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-BCXH4AN2aog.html It works much better, though is much harder to make.
+John Smith That's close to what I'm working on now for my version 2, a tank drive or differential drive except that my RC gives either on or off, no variable speed. But I'm using separate RCs for each wheel. So at least one wheel can be on and the other off, or both wheels can be turning in opposite directions at the same time.
+Kevin Medici (FLuffeeKay) Thanks. No need to though. There are a few videos on youtube that show people taking them apart and showing what's inside. My current plan is for my next version to do something similar in the way it's driven and steers.
They are. But they also meant that the "truck" had to be heavier and more powerful. The result was my version 2 here ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-BCXH4AN2aog.html
I'm definitely going to make this! I've got a science fair at the end of April. I think I'll just make the ball and paint it with green and Glow-In-The-Dark paint. And a cute robot face.#kawaiibot
+Julinator LPs I agree regarding keeping the rollers separate from the magnets. However, the problem isn't the magnets sticking to the ball. Even if the magnets aren't in physical contact with the ball their strong attraction can make the rollers press so hard against the ball that it works out to much the same thing. Think of how easily a bicycle moves with a lightweight person on it versus a 1000 pound weight instead. To overcome that you need a heavier and stronger drive system at the bottom of the ball. That's why in my version 2 (ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-1gWBS70vphY.html) I've switched to drill motors and drill batteries, which are not only more powerful but also heavy.
+kjs054 __ I'm still working hard on it. It's proving to be very difficult. Here's a post I made to my Google+ page about it last week plus.google.com/116395125136223897621/posts/RLdVErrEoxE
hey, just a thought... instead of ball bearing, why don't you use magnetic balls, they will still roll but I would think that they would keep the head on better?
+declan casey Thanks, but that's equivalent to using the steel ball bearings with magnets on the inside of the globe like I did. It's still a magnetic attraction to balls. I've found that the problem with that approach is when a ball, either a steel or a magnet ball, skips off of the globe so some reason, the attraction is essentially lost for that ball and the whole thing can fall off. It's better I think to have separate magnets and the non-magnetic balls/rollers.
If I could make a suggestion a vaccuformed half circle should be light enough to stay and spin but I got no ideas howd you attach it. but its just a suggestion.
For version 1, probably around $25. For version 2 ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-BCXH4AN2aog.html, around $235. I have the parts list on my website here rimstar.org/science_electronics_projects/bb-8_v2_parts_list_bill_of_materials.htm
Stronger magnets would mean that the head would be pulled down more strongly onto the surface of the globe, as you'd expect. But that will act like a break to the magnets and truck inside since they now have to try to roll while that "break" is on. That means the truck would have to have stronger motors and be heavier for more grip. It's a balancing act. That's just what I did for my version 2 ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-BCXH4AN2aog.html.
I love your work and very great way to share your passion !!! ... so much struggle for the top part to stay in place but, wouldn't be easier to imagine a metal bottom ball with rolling magnets on the top part that you would control the position (perhaps with little wheels on them controlled with a microcontroller ... might need some chip to know the position) ... anyhow, continue please, your work is fantastic !!!
+Olivier Preziosa Thanks! I had the same idea, to use a metal bottom ball, a few days ago. Though I hadn't gone further with the idea and thought about using rolling magnets to control the head's movement. However, I did realize that you'd have to synchronize its movement somehow with the movement of the ball so that the head stays on top of the ball while the ball is rolling along. The head might also want to be sitting off center while the ball is rolling. I guess using an inertial measurement board would work. It may actually be the way the one that's used on the publicity tours is done since a recent interview said that the head is independent of the ball (www.popsci.com/qa-how-to-create-robot-icon).
the head is definitely independant on their prototype, even just for being able to turn, or make visual effect (as on movement the head gets independantly of the direction on the front or the back) ... but really keep up your fantastic work !! i feel great i have discovered it ... first youtube chanel i ever register ^^
