PID Controlled Bouncing Ball On Plate 

umm... Yes!

@@ElectronDust Hes shooting a pornographic movie about ping pong balls having sex....... Or is it a documentary about the mating habits of the pingus ballus?

Does it use machine learning?

for which purpose you want to use this sound

Yeah, good point. Hard to measure that though. I am thinking about going back to the camera approach for the next iteration.

@@ElectronDust that could be a good way of detecting rotation direction and magnitude actually.

@@ElectronDust is it just for fun or there's some useful purpose you're targeting ?

Sounds like ping pong balls having sex.

They can probably watch sunsets better than you too.

shots fired

@@no1mafiaman and make them.

I've played ping pong before. Yes.

ya ya ya...

You listened to it for too long and got hypnotised. I work in a factory and I asked some of the people who work on the machinery how it affects them, and one of them said he hears his machine as he is going to sleep.

Arian Gh It doesn’t need one. He can just code it to reset the plate to its default position.

I created the visualization with Unity. Here's some more infos about how the mics work: electrondust.com/2018/07/22/stepper-juggler/

Hey Joseph, thx! Here's the code both of the Arduinos are running (the folders are "CalculatedMoves" and "MicDiffs") github.com/T-Kuhn/Stepper-Juggler I try to write up some sort of blog posty thing to explain a bit more about the thing (with pictures) within a week or so.

waiting for the blog with pics

Here's some pics: electrondust.com/2018/07/22/stepper-juggler/#more-240

what do you mean with increasing the speed? The 2 things that "makes" the speed of the ball is gravity and (air) drag. If we stick with the ping pong ball and earth as testing location, there is not much we can change in aspect of "speed". Using a small steel ball may be a little bit more challenging. Or making the plate smaller, I think this is the easiest and most logical increase in challenge.

FatNonsense wasn’t fully thought through on my part I guess; a higher table speed would result in other effects

I think you only want the speed of the table increased, you increase the speed capability of the servos. The result should be increasing the ability to bounce the ball higher. Higher bounce would allow derivations from the landing spot of the ball to be higher. There are other optimization one could make: - increasing the accuracy of the servos (higher angle resolution of the table tilt) thus allow for finer ball control - increasing the accuracy of the mics to allow finer tracking of the contact position of the ball on the plate

FatNonsense what sort of triangulation algorithm is used in the software?

Head Robotics I don't think triangulation is used here. By using 4 mics you have 2 pairs. By comparing the trigger signal of 2 opposing mics, you will know if the bouncing spot of the ball is closer to the one or the other mic. Also if the system is precise enough you could also calculate the distance from the center with help of thr speed of sound. With each pair of mics you have 1 axis of the distance to the center spot. This data is used to tilt the plate.

maybe an hour. I don't remember. I just played around with it.

I'm still working on it. That's a very interesting idea. I need to get my hands on some piezo sensors.

It would be difficult to get the position then you could one get the distance from the centre

With the current build: nearly impossible. But that sure is something I want to do. Hope this will become possible with the next iteration.

@@ElectronDust sweet. I wish you luck on your next iteration!

Thank you @LordDecapo :)

no

You don't deserve the degree if you're just gonna rip off someone else's work.

@@DowzerWTP72 I already called his mother.