Mechanically Programmable Drummer

[Sariel]

Just a rough idea based on the "program card" concept from the 8888 Technic Idea Book:

Photos & reading: http://sariel.pl/2013/12/programmable-drummer/

[legolijntje]

That's a cool idea.

I have the 8888 Idea Book, and I always wanted to do something with the technique used in that crane, but never had any good idea. This is a very nice one.

Are you planning to make a version with non-lego drums, just for the sake of having a programmable drummer?

[Sariel]

That's tempting, but I don't have any lying around, and I prefer bass anyway.

[Karimix]

Ha! That put smile on my face, thanks.

[Chilly]

Love it.

Sounds like a good idea for the next competition..... What can you build using the program card concept?

[Doc_Brown]

Fantastic innovation and exploration of the card reader! Nicely done.

Love it.

Sounds like a good idea for the next competition..... What can you build using the program card concept?

I 2nd that! :thumbup:

[ms09]

Very funny idea!

Maybe you can realize a mindstorms (nxt or ev3) version with light sensors which plays music.

[LEGO Train 12 Volts]

Very cool!

I like the head movement: this robot looks sympathetic!

[Jim]

Sounds like a good idea for the next competition..... What can you build using the program card concept?

True that! I will put the idea on the short list

Nice build Sariel! Programming cards are very cool.

[Rishab N]

Very cool!

I wonder if you could use programming cards for vehicles?

[Gee]

That's neat! Great to see something different!

[majorna]

Yes! More program card builds! I made a little proof of principle "robot" utilizing this concept and the pull-back motor and posted it a couple months ago somewhere on this forum...

[skppo]

I've been experimenting with these program card type things and I've thought about using a punch card like system.

Instead of holes I tried a "bumpy" plate that would be read by small fingers that then use a gearbox to run motors.

The problem is getting the fingers run smoothly over the edges of the bumps though.

In a drummer it would be cool if you could loop it somehow.

[kieran]

Love it

[majorna]

In 8888 looping is accomplished on a plotter model by placing the rack gears perpendicularly on 1x4 plates placed on 3 wide treads, looped around a couple larger gears. I have briefly experimented with this solution and found it rather fragile.