cool
hey guys Devin here with make anything
now a lot of you in previous videos have
seen this giant disk on the wall and
you're asking me what that thing is.
Makes sense, it's pretty funky looking
and I think it's time I explain. After
all, it is one of my very favorite
projects that I've ever done. A few of
you recognize that this is in fact a
double pendulum, which is a
really cool mechanism that demonstrates
chaotic motion. That means even a slight
difference in how you swing it will lead
to wildly different results.
I made these arms by laser cutting smoked
acrylic and then I fit some skateboard
bearings in them to make them rotate and
then also have this 3d printed
structure holding in place. Now double
pendulums are super fascinating as they
are they do some really crazy movement
like that you see that of this weird
there's a lot of weird stuff and I
wanted a better way to visualize it and
that's where this becomes extra cool
this is a little battery pack that I 3d
printed to hold two three volt button
cell batteries it's also got little slots
to hold onto an LED now this isn't your
ordinary white LED in fact this one and
miss light at a wavelength of 405nm
putting it on the UV spectrum
now this entire disk is coated in a
photo luminescent pigment otherwise
known as glow-in-the-dark paint combine
that with the UV light and you've got
something kind of awesome
how cool is that
and it only gets crazier when you turn
off the lights so UV light
glow-in-the-dark paint and a double
pendulum do you see what I'm getting at
here
oh yeah good the bottom of pendulum in
here is made just the right size to hold
onto this battery and the LED there
we go
we now have a very cool way of
visualizing the path that this double
pendulum takes so I don't give this a
quick spin and then we'll turn out the
lights
so you see why this is one of my
favorite project it is especially cool
especially person not to make you
jealous now if you like me you could
probably watch this for hours and that's
why i made a second video of just the
pendulum ringing nonstop for a very long
time so you have to check that out
in fact why would make a little game out
of it how about you guys find a really
cool moment eating the pendulum swinging
and link to it in the comments of that
video which everyone gets the most likes
i will send this awesome little
glow-in-the-dark coral reefs that I made
in my scribbler 3d video i think it
could be fun especially since there are
some really weird movements that this
double pendulum does as you guys will
see if you guys are like one of these
one day make sure to check out the link
in the description where I have a little
product page setup for this Angeles and
you can sign up with your email to get
notifications if anything ever happens
with it i think it could be a good
kickstarter campaign
all right guys there you have it one of
my very favorite project Angeles until
next time I'm Devin this is make
anything, stay inspired