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[Hroch]

jmadrigal: Thanks a lot for sharing!

First try with PLA. I used plastic YYF tip. It plays really well. There are some vibrations but I'm going to try different tips and in future prints I'm going to try tune up the support to get smoother cap part.

We have Prusa MK2 in our company so I can use it a bit. In next few weeks we are upgrading for MK3.

[Mermouy]

Super nice!
I really look forward to try these prints!

[jmadrigal]

Hroch,
Looks like a good start. Thanks for posting the picture.
The crown on this top is the hardest part to get to look good.
I recommend the aluminum tip. I have used the plastic tip but also got more vibration. The aluminum tip seats down better with the bolt so less chance of the tip being off. I like a thinner string with this top as well (3 core instead of 4). Its a great top for wire walking tricks.
The Prusa machine should do a solid job. The MK3 has some nice new features. Let me know how it goes.

Jose

[cecil]

You don't want to use aluminum tips unless you put a steal point in them. Aluminum nicks and will cut you palm up. I use Spintastic  C steal tips for small tops.

[jmadrigal]

Cecil, this top was designed to use the aluminum YYF tip an no other. Not possible to change the tip without modifying the top.

[jmadrigal]

Something I'm working on.

[ta0]

So, are you re-purposing a LED board (from a yo-yo?) or did you make it from scratch?

Like it!

[jmadrigal]

So, are you re-purposing a LED board (from a yo-yo?) or did you make it from scratch?

Like it!

It's custom with other features yet to be revealed.

[lincolnrick]

That looks super, Jose. Can't wait to read and see more.

[jmadrigal]

So what we have is a custom RGB board that includes a motion sensor as well. It has an on off switch as well as a mode switch. It runs off a button cell cr2032 battery. I estimate about 9 hours run time but that is still just a rough estimate. It uses a microprocessor to read the sensor an light leds. I designed it to be balanced. It has two mounting holes as well. I printed a quick bracket to mount it to one of my large tops. The board is small so it will fit in my 3" tops as well. It also works with the Trompo Grande.
I am curious if this is something people would want. I might make a small run of these this year if there is interest. I estimate cost would have to be about 50 for the board. I plan to integrate this with the translucent 3D tops as shown in the video.
Please let me know the interest level so I can decide if it's worth making.
In the video below I show what I have programed so far. Color fade and color change on quick movement.

[Turegano]

wooooooow   se  ve  increible  conluz   goood  job   jose

[ta0]

Fantastic! 
You continue to push the state-of-the-art in top technology!

Something I learned from juggling torches is that you really don't need to do it in total darkness to be appreciated. Unless you want to get the effect of an "invisible player", some light not only helps the player but also the public.

You can count me for a translucent top with the board, plus a second board by itself.

Is the accelerometer a 3 axis one?

[jmadrigal]

Thanks ta0 and yes it is a 3 axis accelerometer.

[Jeremy McCreary]

So what we have is a custom RGB board that includes a motion sensor as well....

Sheer whirling wizardry, Jose! Would love to see the top perform in person. Videos of my blacklight LEGO tops never seem to capture the full effect, and that's probably true in your case as well.

Fascinating hardware and programming project.
1. How do the 2 modes differ?
2. Do you use acceleration events other than quick movements to trigger color changes?
3. Can your system work out axis changes from sensor outputs? Not just tilt from vertical, but azimuths round the vertical as well?
4. How much latency from triggering top motion to color change?

[jmadrigal]

Jeremy,
Mode 1 is the color wheel which rotates though the colors based on time. Mode two is simply using the accelerometer as a switch . If the force exceeds a set point the color increments to the next Color. I am still exploring uses for the accelerometer.
I am pretty sure I could work out tilt direction but I think a gyroscope would be helpful. The accelerometer gives a hex value for the  value of gravity. So if the accelerometer was sitting still a nd upright, I would read 1 G on the Z axis and 0 on the x and y.
I think the accelerometer is updating at about 10 Hz. It could go faster but running LEDs isn't to critical.