today I'm going to show you this custom LEGO model I've built of a hand playing a piano

It's currently being

operated by this nine volt motor

which I'll take off for now

when the motors isn't attached

it can be operated manually using the crank on the side

so let's take a closer look at what's going on here

we'll start with the hand

as you can see each finger

is attached to a LEGO technic beam

which is connected to a crank shaft that runs through the base of the stand

and as you turn the crank

the fingers move up and down

next we'll take a look at the piano section

which is quite reasonably scaled

and all the keys move up and down including the black ones

the action's actually reasonably accurate

especially considering it's all constructed out of LEGO eventually I may add

some sensors and electronics to produce sound

but at the moment it just makes beautiful LEGO music

I have a little model here to show you how the keys work

there is a technic axle that runs through the back that all the white keys

pivot on

also one that all the black keys pivot on

each of the keys just rests on one of these technic springs

and underneath each one is also a

LEGO rubber tire to provide some dampening

and when you put it all together

it's actually quite simple

I guess that's about it

be sure to check out some of the other videos

on my channel

and if you'd like to see

photos of this model or all of the LEGO models that I've made you can check out my

photo stream on flickr

you can also find instructions for many of the models I've built on my website

and also be sure to check out

my marble maze project on LEGO CUUSOO

and support it if you like it

links to all of those can be found in the description

thanks for watching, I hope you enjoyed it

see you next time