- Видео 11
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We Make Machines
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Добавлен 23 сен 2013
We have been making things since before memories could be formed. Our older siblings introduced us to projects like gratuitous vacuum cleaner disassembly and reassembly, balsa airplanes, remote control cars and planes, and shop. Turns out making things turns into an engineering career when you are old like us. We are here to have a good time and make machines that have never been seen before... aspirationally, somewhat useful machines. And hopefully we can inspire a few young to-be engineers the same way our older siblings inspired us. More engineers = better.
We Built a Self Balancing Bicycle
We thought this project would only take us a couple months to complete...we were wrong. But we hope you enjoy the build!
Help support these projects on Patreon: www.patreon.com/WeMakeMachines
Please subscribe if you enjoy watching videos like this!
Help support these projects on Patreon: www.patreon.com/WeMakeMachines
Please subscribe if you enjoy watching videos like this!
Просмотров: 13 093
Видео
We Built the World's Fastest Frisbee Launcher (Regulation Size)
Просмотров 766 тыс.7 месяцев назад
We have been playing disc golf and ultimate frisbee for 15 years, but practice never worked for us. So we put our engineering brains on the problem, designed, and built this full blown disc launching robot. It took way longer than expected, but better late than never... I guess. We designed and built it to throw any flying disc at any angle or speed. Enjoy! Help support these projects on Patreo...
We Built the World's Fastest Frisbee Launcher (Mini)
Просмотров 128 тыс.10 месяцев назад
We have been playing disc golf for 15 years, but practice never worked for us. So we put our engineering brains on the problem, designed, and built this mini launching prototype. It is a beast... and was not easy to get over the finish line. We hope you enjoy. Next up is the real deal, a full blown disc slinging robot. Help support these projects on Patreon: www.patreon.com/WeMakeMachines "Not ...
You Guys Didn't Get to Jump Ramps when you were Kids? Why does GenX have to be so Cool!
You could make tour own analog angle sensor with just an encoder and a weight.
That was a super cool project. Thanks. Now I am impatient to investigate LQR ;) ;)
You should!
WHOTHE HELL WAS SCARD TO JUMP OFF RAMPS NOT MY GEN we built them evereyday
We can only speak for ourselves 😂
A bike rolling at slow jooging speed will self balance even with 60 or 70 kg of rider sitting on it. Clearly then your gyro code was therefore actually upsetting the bike at more than 5 or 6 km/h and in someway counteracting the natural self balancing . The fact that you had a steering mechanism installed would inhibit the natural tendency for the bike to self steer into a lean and correct the fall. All good fun stuff and I enjoyed seeing your construction. Thanks.
@10:31 And this is what happens when you get to see Paul Allen's Six Axis Inertial Attitude Sensor.
Great project. Which software is used for rendering?
I keep thinking if this was on Mars 😂
Well, looks like you made a device for controlling the roll axis while the bicycle is stationary. Bicycles stay upright by not falling to one side or the other while in motion by steering to compensate, which doesn't work when stationary. To properly steer a 2-wheeled vehicle through a turn, one needs to briefly steer in the opposite direction one wants to turn to initiate a fall in the desired direction, and then, while in the turn, steer to maintain or adjust the lean angle angle to maintain or adjust the turn rate, and again counter steering such that the rider can straighten out. I have a bike that I replaced the wheels with a couple of kids downhill skis. Anyone who can ride a regular bike can ride it.
Great project. good go . Balancing is a wonderous goal. I recntly tried making a cubli and saw the same rapid gyro drift with vibration on several >£10 6DOF mems IMU's. Zero drift gyro is a claim suppliers caveat.
If you had an optimus type robot riding the bike it might work better. Or a simplified version of the concept with a control arm for steering on an electric bike.
We'll be the first to try it
Only 27k Subs, lets fix that!!!!
Lesgooooo 😂
Surely you salvage all the motors and connectors and rails... ?
Gonna need more patreon members to pay for unsalvaged electronics 😅
Geile Idee. Die Menschen werden beim täglichen Leben immer mehr betreut und bekommen irgendwann durch den ganzen Schwachsinn gar nichts mehr ohne auf die Reihe. Kein Wunder, dass die Gesellschaft immer unfähiger wird selbstständig zu agieren.
ruclips.net/user/shorts3TS9BAKKGyc?si=biMZffB4YCJeJH16 Is this why it would not balance at higher speeds?
This could be the future of Door dashing....
Exactly
If you are working with high speed rotating equipment look up "balance balls" or "balance beads." You can add a hoop filled with balls to any rotating mass and the balls will dynamically balance. They are used in front load washers, truck tires, 52x CD drives, etc. I did a video on them earlier this year and they are legit physics magic. Only minimal precision is needed and the balls will do the rest of the work. The bike is awesome, I can't wait to see flocks of them roaming the streets XD
I have wread a reserch sdudy on thes spesifik topic
i do not wanna sound like a party pooper... but there are these gadgets, one wheels. I have this one wheel thing powered by batteries. The wheel is just the same width of a bike tyre. Anyway, this one wheel gadget balances itself with all the electronics it has onboard. So, what is the difference> Reinventing the wheel is a waste of time
Turning angel was missing
7:29 "saved us a ton of time previously wasted commuting and spending with family" Me nodding thinking it's a great idea not realizing my wife staring me down across the room.
can you tell me where's that bin is located
In an undisclosed location, far away
If you guys use a fancier (maybe custom algorithm) to automatically handle the offset angle buildup of the gyros by setting the target degree tilt of the bike (currently 0° but should be variable) to be proportional to the offset (or possibily it will need to be a bit fancier than this, but just as an example). Then the bike should balance indefinitely and be able to handle turns. Regardless, congrats on this project!
Thanks for watching. We left some room for improvement on v2 😮
@We.Make.Machines yes please!! 😄
Which motor did you use for the project? nice Project
Amazing work guys
Glad you enjoyed it
Fun to watch. Very kind memorial service
The safest thing would be to remove the car drivers
Lol v tru
umm... the geometry of a bike is what makes it self balancing. Take any bike, go uphill and let it go. It will go for it's own journey and balance itself all the way.
That was fun watching!
Thanks for watching! 🙂
Looks like you’ve designed a bike that doesn’t consider countersteer
I think there is a way, a very complicated way, to steer without countersteer. The gyros can initiate the tilt of the bike into a turn rather than a countersteer. But this is unrelated to the sensor's drifty readings.
@@We.Make.Machines makes sense; use the gyro to tilt into the turn, and allow the bike’s front wheel to naturally sit at the opposing angle
10:20 < Fourier Transform
Nice mechanics and technology but a little futile to me. May I propose that you construct a Segway that is stabilyzed by gyroscopic forces instead of controlling the wheels? Really cool would be if the vehicle had a combustion engine because I think the gyroscopes wouldn't have to change their speed suddenly.
you don't need to hunt for the perfect sensor, you just need a low pass filter. you can mechanically low pass filter such a sensor with rubber mounts
We did a ton of work on rubber and foam mounts and filtering in the software (kalman, etc) that didn't make the video cut. Doesn't mean there isn't something that would've worked, was just more fun to destroy it and move onto the next project.
i'm throwing down a Sir Isaac Newton 3 law of motion fact check on your entire program with an emotional outburst to demonstrate the seriousness of this oversight by pounding my fists, kicking my feet and of course spitting and swearing and frothing, something a kin to a epileptic seizure and a hysterical temper tantrum. Now let this serve as punishment and a warning, the next Sir Isaac Newton 3 law of motion fact check will be a double check recheck fact check with a much more serious hissy fit that could go on your permanent record
Glad you got rid of the lifting weights as gyro elements. The steel/iron in them is absolute rubbish and it doesn't have anything like the strength of billet steel or aluminium.
15:07 - “I wanna slam my hand into a giant metal disc spinning at 4200 rpm!” 🤣
😅
😅
Do you have the steering reversed? Like…if you want to turn right you turn the wheel left to initiate a lean to the right? Sweet project!!!
Poor Billy. Cool video!
jersey!!??
Have you seen this video yet? It’s a very similar concept to yours but with a much smaller flywheel. Loved the video, really entertaining and a cool concept. ruclips.net/video/kCL2d7wZjU8/видео.htmlsi=0_cYruPngpInz25h
Thanks for watching. Yes, we enjoyed that video as well. We wanted to try to tackle the project with a control moment gyroscope!
Awesome job. I am loving this channel. I think the steering issue could have been solved if the bike leans or steers the opposite way first then leans into the turn. Otherwise the turn sends the center of mass off balance the wrong way. Otherwise it kicks ass!
Thanks for the feedback, we'll have to give that a try!
Cool project, Zhihui Jun did this properly a couple of years ago, fully autonomous and with a single small flywheel, it could literally balance on a rail and detect cars with a lidar and cameras, it's on RUclips(all by himself, absolute unit of a man)
id use a reaction wheel instead by the way you can balance a bike if ur good at it by moving the steering which can shift the weight slightly to both sides so you can also balance in a stationary position but a reaction wheel will be smaller than that and you could fit a human on it by putting the wheel on a rear rack at the back
how do you guys have so much machining and engineering knowledge but you cant figure out how to calculate the length of a chain 💀
😅
Could you use a hanging weight pendulum with a rotation sensor on the axel as your angle sensor? As a bonus, it would automatically lean in the correct direction during turns.
@BenAlternate-zf9nr we considered using a rotary encoder w hanging weight but it would have momentum every time it corrected and that would cause it's own set of problems.
A few points... To make something balance, you need to counteract any undesirable motion with more counter motion than is present. That is, if angular velocity is at 1, you need -1.01 to -2 to counteract it. The amount you put in depends on three factors. How far off your target you are, and how soon you will hit your target, and how responsive you want your balancing system to be. If you get oscillations, your algorithm is not doing a good job. And if you overshoot (which is what oscillations are) you also might have set it to be too responsive. In that it tries too hard to balance itself when the mass it's trying to balance is lower than the force you are putting in. A properly implemented balancing algorithm will self adjust such that it doesn't overshoot more than a few times, it will know that it's too good for it's current load. A standing bicycle is not al all the same as a rolling bicycle. Most bicycle geometries are made to self right themselves when rolling, which is why you can push a bike and it will stay upright for a while after you let it go. If you have a balancing algorithm that fights this self balancing, you are going to end up making things worse. A sensor that doesn't know up from down is a bad choice regardless of its quality. It would have been much easier to use physics to your advantage and just have a pole that controls some actuators. Not electronics. To make a bicycle turn, all you have to do is lean it. You don't need a servo on the handle bars. And an electronic angle sensor is going to mess you up no matter what you do because it won't know how much to lean to achieve balance in a turn. But a mechanical pole balance will know, because its reference follows the bicycle.
What a fun project! I wonder if that 'good sensor' would be good enough for pedestrian-carried dead reckoning navigation? Normally this is thought to contain so much noise as to be impractical.
Thank you for watching!
excellent seems like a good way to mangle a low weight bike to to put big heavy gyros on it
Did you use kalman filter on the "bad" sensor?
We sure did. The sensor would recover eventually but it took minutes even after optimizing parameters.
@@We.Make.Machines I see, btw Great Job on the build! Cant wait to see more from you guys! Love the comedy, love the effort, love the quality. Amazing
@@We.Make.Machines Why not use an accelerometer to detect which direction gravity is? If you add that into your kalman filter you would likely get better results
@jcweaver1997 it does have accelerometer, when you introduce centrifugal force due to turn it skews the reading
10:35 Is this a American Psycho reference? 😆
😜
Was looking for this comment... Oh my God it even has a watermark!