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This is Bob, and
he will talk about Arduino
guitar.
It is his project, and it's
about a guitar that has no other controls
but the strings.
And I think it's a quite interesting
project.
Thank you.
Thank you. Can everyone hear me?
All right, so I'm going to talk
about really the project itself, but also
everything that came before the project
because I
didn't know much about any of this stuff.
When I when I started playing with it.
So I'm going to tell you a little bit
about myself and how this
whole thing happened.
I'm not going to. There's a lot of things
I might mention that you might not know
about, but you can use Google, right?
Everyone can use Google.
All right. So there's two things you
might want to know about me.
There are two things really that
characterize me. I have a lot of dreams.
I spent a lot of time just sitting around
dreaming, and I used
to have very little money all my life,
you know, practically no money.
So with dreams and no money, you learn to
scrounge.
You're really never into scrounging.
When you find something, you're willing
to fix it.
And and when you fixed it,
you don't want to break anymore.
So you sort of become attached to things
you got. That's me.
And then you develop
the ability to fix anything, which I
think I have today practically anything
if I really want.
But on the other hand, once I've fixed
it, I get attached to it and I don't want
it to break. So I guess so this fear of
losing it. So, you know,
poverty, dreams and stuff, it
becomes a sort of a mixed blessing.
When you have this, you have stuff and
then you're afraid to lose it.
You know, the song says, when you got
nothing, you got nothing to lose.
It's but it's not really true.
It's when you get nothing. You can't
afford to lose anything.
That's really how I looked, how I've
lived most of my life.
And there's another aspect that I'm very
tenacious, so I have this sort of never
give up attitude. That's also a mixed
blessing and a lot of ways.
And one last thing about me, I usually
like stuff that nobody else likes.
I mean, I'm the only one who buys
the one little thing in the shop that's
been there on the shelf for 100 years,
and nobody wants it because they don't
know what it's for because they just
don't like it.
So
this whole project started.
I come into this work.
I guess not.
And you change slides.
All right. There we go.
Electric guitar.
So this whole project side, you know, I
was as a kid, I've always been, I
was a hippie. I'm still a hippie.
In the 60s and all that.
Play electric guitar, which flaked.
Couldn't play electric guitar.
Couldn't afford electric guitar.
Get a lot of junk electric guitars.
Have to fix them. Don't know how to fix
them.
Anyways, I had this.
I had this idea about electric guitars.
And so first, what is an electric guitar,
really? It's got these things in the
middle here. This is one of my guitars.
It's a guitar that probably no one's ever
seen before. There's only two of them in
Belgium.
It's made in Canada, so you get two
or this one has to pick.
They call them pickups. That's week that
captures the vibrations of the strings,
turn to turn it into an electrical
signal. And then here you have a switch,
which basically which routes the signals
from the pickups to
the volume and tone controls which are
here. And this guitar just has one volume
and one tone.
And then it all goes out through
the jack to the to the amplifier.
It's pretty simple.
I mean, it seems pretty simple,
although it took me a long time to
understand it.
So that's what a guitar is.
Now here's what I know about electronics.
That's it.
You're laughing, you're laughing, you're
laughing, but I didn't find very funny.
I spent a lot of time even that, you
know, it seems so simple and is simple,
but took me a long time to understand
things like a voltage divider.
What is what is that? How does it work?
I'm still not sure. I really understand.
Anyway, so that was the way it was for
like 30 years of my life.
I knew vehicles. I, you know, I had
guitars. They never worked.
Then I got a job, a real job,
serious job, and I had some money.
And so I decided to learn to play the
guitar at last.
I'm an old man now, old
hippie, so I got a serious guitar
and a serious guitar requires serious
adjustment. Even though I can fix
anything, things
that break you and things that are
expensive, you don't want to just, you
know, tweak with. So I brought it to a I
needed to adjust my bra to oluchi a
guitar shop guitar manufacturer,
which is a fancy word for a guitar maker.
And these guys suggested the guitar,
and I learned a lot from these guys about
guitars and about technology.
And yet I learned that basically,
everybody wants the same thing that Jimi
Hendrix played.
That's all there is to the whole music
industry is based on Jimi Hendrix played
Left-Handed Stratocaster.
OK, not everybody is Left-Handed, but
everybody wants a Stratocaster, so that's
it. That's the number one selling guitar,
and that's it. The technology hasn't
changed. 1950S, they invented
all this stuff and it hasn't changed.
And nobody wants it to change because
everybody wants to be Jimi Hendrix.
And there are and the
mechanical potentia, emitters and
capacitor and a little mechanical switch.
That's it.
That was from the 1950s, and it hasn't
changed. And
even on guitars, in five figure prices,
I'm saying, you know, a 20000 or 30000
dollar guitar. It's still the same guts
inside. Nothing special.
OK, maybe the pickups are a little bit
more sophisticated.
Maybe the wiring is really poorly put
together because there are there are
$20000 guitars where it looks like it was
started by a child
and I've seen it.
I wouldn't. I wouldn't have believed it
because at one point I was thinking about
buying one of those at a special price.
But when I saw the guts of it, I was just
like, Forget it,
forget it.
So, you know, the 60s, I love the 60s
because of hippies and because of peace
and love and all that kind of stuff.
It was great and I for a long time, I
regretted it, but then came along
internet and the 21st century, and I
found the 21st century is not too bad
either.
And in fact, it's really cool, especially
the long tail living on the long
tail is a cool place to live.
And now everybody here, we're all on the
long tail, whether we know it or not.
So talking to these guys and things,
I started thinking, You know, why is the
guitar? Why is it guitar have to be so
old fashioned? Why can't it be in the
21st century now?
Why does it? Why does it have to have
these mechanical things?
And you know, there's all kinds of stuff,
for example, on out of the guitar I
showed you.
It does some cool stuff.
It's not just an ordinary guitar, it does
some pretty cool stuff. So basically, you
have, you know, the two pickups, you can
have either one or the other or both.
So both in parallel, both in series
series is already in advance.
I mean, this is only something that
became imagined later, much
later. But this guitar has has all of
that, and those are very, very
sophisticated pickups which were only
invented, I guess, 10, 12 years ago.
They're very sophisticated. It's very
sophisticated guitar, but it offers both
the neck. The bridge to the neck is the
top one, the bridge, the bottom one, so
you can have the neck, you can have the
bridge, you can have the neck and the
bridge and series and the neck and bridge
and parallel. So that's that's already
pretty sophisticated for a musician
that's already incomprehensible for most
musicians. My guitar teacher, when I tell
him, What do you mean?
What are you talking about?
So I saying, Well, I was just saying,
it's like jazz and rock.
Oh, I get it.
I get it. I get it.
I get it. So but even
that, so you have to.
So what does that mean? That means that
little switch. There is four positions,
huh? There's three one for each
thing. And if you want to start turning
things on, turning things off,
everything, you need a mechanical switch
and you want to have individual tone
controls, individual volume controls,
everything needs more mechanical stuff.
And pretty soon you have your guitar just
covered with buttons and nobody
knows how it works. You even yourself,
even though you built it yourself, you
still you can't remember which button to
push to get this sound, or today it
becomes just a mess. So I thought my
vision was, let's get rid of all this
electro mechanical crap and put
put a screen on it or make it have a
have a circuit in there and then have a
screen where you can have it synthetic
and you can have do all kinds of stuff.
So. So why not?
Why can't that be?
And OK, we've already seen
that. So that was my vision was to have
some kind of circuit on a on an Android
phone and Bluetooth.
And in there I get in there, you know,
some kind of thing. I don't know what an
Arduino it turned out to be.
That was my idea and don't
seemed easy enough.
Modern technology, you know, stuff
vehicles air as good enough.
And why didn't this already exist?
Well, I have. I had a lot of friends
or friends of friends
in the music industry, and
they all came up with the same answers.
There's two reasons why.
First of all, it's just unbelievably
complicated. You need a team of
engineers, hundreds of years of
development, and
it's just really complicated.
And this was brought from professional,
from engineers in the music industry.
This is not just from musicians.
And then the other thing was.
Nobody wants it.
It's just ridiculous, everybody.
Everybody wants to have a knob and
a switch. That's what musicians want.
That's it. That's it.
That's all there is. So just don't waste
your time.
And so that's
yeah, I didn't really waste a lot of my
time, but I kept thinking about it.
I kept thinking about it.
And since I didn't know anything about
electronics, it was kind of a handicap.
It was kind of, you know, what to do
about this and how to make progress.
So it's so this idea of just being around
in my head for a while and then
nothing happened. Then I I used to go to
a lot of Ted guys to do the TED
conferences in Brussels.
I live in Brussels and we have the Ted X
there, and you get a lot of inspirational
guys talking and we've been talking about
stuff they've done.
And.
And I went to one of these and
had a good time with it, and
I was thinking, you know,
is it really impossible to make this or
is it just people that are scared of it?
And it made me think
about Marshall McLuhan.
Does anybody know here?
Know who Marshall McLuhan is?
One person?
That's it. Two three
four five.
Well, Marshall McLuhan was always
a great thinker.
He thought about mass
media in the early in the late 50s,
early 60s.
And he and he predicted internet in 1962.
He predicted the arrival internet with
with a with a great thing where he said
in this new age, humankind will move
from individualism and fragmentation
to a collective identity of the global
village. So he invented the phrase the
global village. But he wasn't thinking
about computers. He was thinking about
the electrical network that ran
throughout the world.
And he thought that was cool. He thought
that that was going to bring the entire
planet together, electricity and the net,
the net electrical net.
He was a cool guy.
And he also he also thought about a lot
of cool things like why innovation
is so hard.
And he said the second part, which is
really a photo to my project
and probably to a lot of things people do
here, is that whenever you look at
something new, if all your references
are in the past so you
can look at something new with just
thinking, Well, is it like this?
Is it like that?
So so a Mac?
It's like, it's like, it's like Windows,
right? Mac. And just like Windows, just
it's everything is referring to the
immediate past.
And so that makes it hard to understand
something which is radically new and it
puts people off in general from things
that are radically new.
So I was thinking, you know, all these
people who told me that nobody wants this
stuff and it's impossible to do is that
just is it just, you know, fear
and misunderstanding?
Or is there is there more to it?
But I had no way of knowing what that
meant or what was going to happen.
And so, you know, I always think
of the story, you know, I had the Henry
Ford story to, you know, it was
interviewed.
I don't think it's actually happened, but
it was interviewed and said, you know, do
you think, how did you know people would
like your cars to go and ask them before?
Did you go, you know, user survey?
He said if I had asked people what they
wanted, they would have said faster
horses.
And, you know, so
he wasn't interested in making faster
horses.
So all these things were going on in my
mind, and then I went to last year's Ted
X in Brussels and Mitch Altman was
speaking there. Is Mitch by any chance in
the room now?
Well, he was there
and he gave a very inspiring speech about
hackerspaces and all this kind of stuff.
And so I immediately jumped on him
because he's a electronics guy.
So, you know, he's my project.
Ken, what do you thinks? Of course.
Of course it's so easy.
You could. Of course you can do it.
It's great idea. Go and do it.
That was enough. One guy.
Never seen before in my life convinced me
that I should do it. Find all these
experts told me. Forget it.
Forget it. Forget it.
And so, yeah, it's it's a shame he's not
in the room, but he gets a slide,
so. So that's, you know, he
hooked me, he said, contact the
hackerspace community admin or there was
one in Brussels. I mean, Brussels,
anyway, there's a huge hackerspace
community in Belgium and Brussels, and
I was amazed about
about this.
And so so that was that's the the
middle, the middle part of the project.
Thank you.
And now we can talk about the technology
and stuff, which is maybe interesting.
Maybe not.
So, so that's a potentially
ometer, right?
Most people know what it is.
You got the thing you turn and it and
it moves the way both the W and moves
that up or down.
And that means that one resistance gets
bigger. One gets smaller, right?
It's really it's really it's pretty
simple. So, you know,
and through them, are we having an analog
signal coming from the air?
So it's a sign of it coming from the
from the pickups.
So the question was how how
could I? Could you make that controllable
digitally somehow?
I mean, I thought about putting servos
on their motors and all kinds
of stupid things. It was really.
And a lot of stupid ideas.
But I put this out on the hackerspace
mailing list and people had all kinds of
answers, but they all it all seemed to be
like they were. It wasn't criticism, but
they didn't know what I wanted, and I
felt like there was really some kind of
really cool hand, Luke.
What we got here is failure to
communicate, and then they whack him over
the head.
You know, the great movie Paul Newman's
masterpiece, anyway, was a failure to
communicate, and that was something I
learned a lot in this project is you ask
questions and they make perfect sense to
you, but nobody else can understand
what you're talking about.
You know, you ask a question of for me
said, I got this thing in this thing and
this thing, people and people don't
answer or they ask the with
crazy things.
Then you realize that they don't
understand and they didn't understand.
So finally, though, after a lot of
questions being tenacious, remember
tenacity.
We got to we got to an answer by Yohannes
Talman, who is a brilliant scientist.
He's not here, either.
Well, he's got he's he's in the hacker in
there in cyberspace, and he's just he
said, Well, why don't you do with a lead,
LDR?
And you know, I didn't I didn't know if
that was a word or if that was acronyms
like. OK, great.
Now tell me more about what that is.
So actually, I led
LDR is really a lead, you know, a light
and and a light dependent resistor.
So you have something to shine a light.
And then you have something which changes
resistance when you shine light on it.
OK. And you put those two together
and once so that that makes
a digitally controlled resistance
because you can shine light more or less,
you can pulse it with P.W.
and then you. So now you have a digitally
controlled burn resistance.
And if you put two of them together, like
in that picture, you get something very
similar to a potentially amateur.
And all you have to do is manage the
current. And in the meantime, you know,
I've been playing with I got getting
started with Arduino.
I saw Bansi on on Ted and I
got the book and I got an Adreno and I
could make the lamp, the LEDs blink.
And yeah, it was great.
Everything was great. The whole problems
were soft.
You see, it seems so simple.
It's like, why didn't you know
what's wrong with people? Like, why?
Well, it's so easy.
It's just so unbelievably easy.
So I started doing it.
But somebody on the mailing list said,
you know, he said this, he said, I quote
this you certainly work to some extent.
And even if the result is too noisy or
bad quality to be used in music, it
will be it will still be huge fun to
make. And I said I thought to myself,
What noisy, noisy whip.
But where's noise coming from?
How can vehicles and where
is noise in that equation?
I don't get it.
But that was kind of it's kind of stayed
in the back of my mind is something
about, you know, who cares?
Went on, by the way,
led elders actually in the
industry. They're called vectors.
There's an a component which has the
whole thing built in one, and they're
made by different companies.
The best company is PerkinElmer.
If you if you buy them, just put my name
in the end. So I get my commission.
OK? All right.
All right. So so that was easy.
So now I had the the fundamental problem
solved, and now I just had to learn how
to do it. So I read Making
Things Talk, Buy time ago
and later corresponded with and found out
that he didn't test all the code in his
book.
So here it is, so so the idea was
really you have you have you have a
guitar and Arduino in there, a bunch of
tools and then you have some kind
of Bluetooth and you have some kind of
device, a computer, android.
I'd never seen an Android phone in my
life at the time, but I figured that
would do it and it would be really easy.
Yeah, and it was.
So here's here's here's the really good
the geeky part, huh?
This is the real. This is the schematic.
I I only made it because the person
revising my presentation here told me
to make it more technical because it's a
technical conference.
All right. So here's the technical stuff.
You wanted to get it.
Where are you going, OK, in the upper
left there, you can barely see it, but
you have the the gate, so there's three.
I put three pickups.
This guitar has three pickups.
And you see this one has one sort of
double pick up, which is exactly what it
is. So the three pickups, they come in,
so the top one goes in and you have the
red wire goes to a vacuole, which
is just an on and off that drill.
So it's it's got no, it's got
no variable resistance, just shine
all maximum light and it lets maximum
maximum electricity through.
It's not perfect.
The fact was I, you have about 80 ohm
resistance when they're meant, when
they're full on.
But you can you can do a little better
than that.
What? I didn't buy the right factors.
I couldn't understand how to read data
sheets. They're so complicated.
Why don't they just say what the what I
want anyways?
So there you have it.
You have each of the each of the pickups
goes into a back to the top for the
switching vector. So you have one per
pick up, except for the last pick up,
which is two pickups, actually two coils.
So, so that means you have to
be able to have both coils on or in
my case, I decided to have both coils in
series or only the only
the top coil.
That's a typical configuration for
guitars. It's called splitting a double
coil, so there's a vector which does the
split. Then you have the orange,
the orange say
input bus, which goes to the vectors
which pretend to be a potential.
Another one pretends to be
the tone control, which is just half a
potentielle motor and a capacity to
ground.
And then the last one was a trick.
I just I thought of to be able to
have maximum volume because the other
ones were all being controlled by P.W.
and pulsed with modulation.
So I could never get the full light with
that. So I just had another one that
could shunt them all out and get full
volume.
And then it goes to the jack out.
And you see, one of the great things
about vectors is this whole circuit that
is optically isolate.
So this part is is not in any
electrical communication with that part,
and the ground is provided by the
amplifier.
So it's completely separate from the
Arduino ground,
something I had to learn the hard way.
And then you have the resistances on the
bottom there, which do the which control
the the the current to the LEDs.
And something I don't understand is I
ended up just empirically testing all
different types of resistance to get the
amount of light I needed.
And I ended up with microscopic
current to the vectors, which was not on
the data sheets at all.
It says I don't know how it works, but it
does pretty well.
And then you have the Bluetooth, a
Bluetooth radio.
I ended up using a Spark phone radio at
the time is running out.
I'm sorry, you're going to have to just
skip over all this stuff.
And then I wrote, So so I bought this
old guitars in old 1980 RG
140 from even years,
and they didn't give me permission to to
use pictures in the in the in the show,
but they can't prevent me from holding it
here. So anyway, and I used a very,
very inexpensive G-A-Y MCU
Bluetooth radio module to connect
to the two to think five euros.
I couldn't understand why it was why I
didn't work very well.
I mean, five euros come on.
It's a lot of money.
But I ended up having a lot of a
lot of problems with that with
you, with noise, actually.
But let me tell you before I talk about
the problems, when I when I plugged it in
the first time and I built the circuit
and started it all with prototype for two
hours, even days, I made some
mistakes and so I put it in, plug it in,
turn it on and it worked.
And it all worked.
The first time I felt like Dr.
Frankenstein. You know, when the
Lightning, when the lightning hits the I
think in the end, the monster wakes up.
I tell exactly how I felt.
It was just great.
That's why it was the high point of last
year, I tell you.
And so I mean, that's
all the good news.
I'm not going to talk about the software
development. That's kind of just software
development. I wrote a first I wrote a
green in parricide
Python plus for the for my
laptop.
That's that worked really well.
That worried me because I knew when, you
know, when the prototypes work that
you're in trouble for the final version
and you know,
and then then I thought about Bluetooth,
I read an Argos book about how to
do it. I copied his code and work.
I wrote to him. He said, Yeah, well, I
never tested it. Sorry.
OK. And then I managed to get it to
work. And then I had to port it to to
Android. And I found out that Python on
Android is sort of like, you know,
especially parricide on Android is, you
know, like, no, no, no, no.
So forgot about that.
And I thought, OK, I'm going to learn the
Java framework and a lifetime
of learning. Forget it.
And I found that processing could be
compiled by compiled for Android
and do so. It just covers
encapsulate all the Android Java
framework in pain processing and
that was easily done, except
that the Bluetooth Library for Processing
Kit Library had a good amount of
bugs in it.
I wrote to those guys and they, you know,
they had that ended up.
So for example, there's a function called
connected. It always returns false.
Are you connected? No,
but but the signals are coming back and
forth that we're not connected.
That's a good one, but so you couldn't
use that anyways.
So I mean, that's that was the next slide
and we've already seen it.
So you have on the one hand, you have
processing Android and Bluetooth.
The other side you have vectors, you
know, C++ and
an a Bluetooth module.
And maybe I'll skip ahead a huge amount
of problem with noise, but it's it's
worth. So I showed anyway, I showed
this around.
I showed this around to musicians how
they say all these people who told me it
was a terrible idea and they all thought,
Wow, it's great.
All you got to do is this and this and
this, and it'll be great.
And the first thing they said was get rid
of the noise because there was a terrible
whistling noise and they were right.
It was awful.
I couldn't understand where it came from.
I couldn't understand how anything could
get through the optical barrier.
It didn't make sense, OK?
But they also said I had to.
They also said, you know,
maybe make a pedal for it
and maybe you should show how it actually
works.
That would be nice, I guess, huh?
And show you how it works and turn it on.
Now in.
Noise, that's the noise, but that goes
away, don't worry, once you turn it on.
So here's the screenshot from my
Android tablet, I'm sure there's a huge
lag with the Android development
thing. So this is what this is.
This is the grade I use today.
And you see they have the you have the
pick ups, which you can select,
turn them on and turn them off.
You can split this one.
And then you have all these on the side.
You have preset configurations, which I
call configurations and musician said,
What do you mean?
I said, Well, it's like things you always
set up ahead of time and you just click,
Oh, I mean, presets.
So that's what it is.
Presets, presets.
So I learned you don't call
configurations configuration to call
presets, you have to learn the language
of the domain.
That was something I had to learn how and
then so I made a famous one.
The woman told the woman tone, is Eric?
Is it coming? Yeah. Eric Clapton had a
famous sort of jazzy blues tone,
which he called woman, and this offended
many, many people. Like Why?
Why did you call it woman? What's that?
What's that you said?
Is Eric Clapton's woman tone
white? Is there? Why is that on a man
button?
Sorry, I sorry.
Yes, you know. So, you know,
and then it was over. Then there was the
long search for the
whistling noise. You don't hear it
anymore, right? There's no whistling and
there's no whistling.
But there was whistling and it was and it
was during communications.
So when you sent it, when I typed
something on the keyboard here on the on
the Versa, then you can you could hear
the whistling through the AMP.
And it was it was really annoying and it
would last exactly ten seconds after
the end of communication.
So this was really annoying and really
painful. And so I had all these forum
discussions, especially the best form was
the Android Electronics General
Electronics Forum.
It was my my my thread was the top
of the list for months.
Literally, that was I must have must have
been 100 or 200 responses in people.
And there was some guy who spent all of
his waking hours trying to figure it out,
but he couldn't. No one could.
I could. And it just.
And finally, I had this idea that
this seems to be coming from a Bluetooth.
Why not contact the Bluetooth people,
Bluetooth manufacturers?
So I didn't know any.
So I saw a Spark phone had a Bluetooth
module, which costs, you know, upwards of
30 euros.
It's a lot of money.
So I wrote to them saying, How am I going
if I buy this? Is it going to help?
And they said, How would we know
we're not Bluetooth car?
You know, we use the the roving networks
are in 40 to chip.
Why don't you contact their support?
So I'm not.
I'm not. I'm not a I'm not a
client of I'm not a customer
of a spike phone.
I'm even less a customer for roving
networks. Never heard of them.
But so I wrote and roving.
I don't care. I'm afraid of nothing.
I write, you know, I wrote to the
president of Honda about my My
Honda's navigation system in Japan.
He replied immediately and fixed it, by
the way. So anyway, I wrote to Robin
Networks and told him the story.
You know, the guy MCU isn't so
big. Guy said, Yeah, I've investigated
you, MCU. I've been looking at the specs,
you know, and it's just like this, like
this and like this, like this.
And and it's got all these problems in it
because it's not this. It's not that.
But our chip is like, this is like this,
and it should be a lot better.
But of course, who knows.
So I bought their chip.
I invested 30 euros after great
hesitation.
And I know, I know, but this is the
end of the story
and I plugged it in and it was
almost perfect,
almost really close to perfect.
Most of the noise was gone, but
a little bit still, I thought
electromagnetic interference.
I finally learned that I saw and I saw
that somehow I came across that
EMI. I thought it was a record company,
but no, it's electromagnetic
interference.
My girlfriend used to work my ex, my
previous anyway, someone I used to work
with anyway.
EMI electromagnetic interference.
That's the problem. So how do you figure
out how do you how do you solve that
problem? Who knows.
It's just impossible to solve.
So I contacted shielding companies and
they told me all this stuff, and I just
couldn't understand way too complicated.
But automation was the last
part of the musicians.
You can't you won't be able to see it.
I don't think because the response
rate is not fast enough, but you can hear
it.
So now there's no effects pedal,
I'm now creating a.
A tremolo, just
just by changing the volume rapidly and
the volume and tone.
So that was one of the if that was so
automation I have this can do unlimited
forms of automation.
You just have to just have to read a
little a few lines of text file
and it will automate.
But that allowed me to automate the
communications and I could look more
carefully at the problems.
And by miracle, I discovered that I
could. I could. I have.
I got the stethoscope.
I call you just take a cable, a guitar
cable. These are heavily shielded, but
the tip is not shielded and you don't
have a full blast.
You hold the cable, the tip of the cable
near what you're looking for, where
you're looking for a noise and it acts
like a stethoscope.
So you know how the tip near the Arduino?
Nothing vectors nothing.
The the in 42 chip nothing.
Where was the noise?
It was the cereal.
There's two cereal wires between the
Bluetooth and the Arduino.
So you having so cereal wires have square
waves going down, right?
So pulses.
Pulses was it
was. You could. I can.
I can imagine now the Spirit Square,
which is going back and forth, back and
forth and coming out of my hand.
That was the problem.
And so I put lots of shielding
on those wires and it all went away.
And now we have now we have something
that works, and
she's trying to chase me off the stage
here.
And so I can just show you, maybe
if you want to see that's a 3-D view
of the pedal that I've almost finished,
as was an early view.
So it doesn't have a lot, you know, the
guts of it. But so the next step is a
pedal because although musicians,
professional musicians have sound, people
and people would come on stage and tell
them to get off.
People like me don't have sound people,
and it's not really practical when you're
playing to to tap on a touchscreen.
So but I pedal, on the other hand, it's
really practical and it's really easy.
Just put it, take away all the Android
problems having to send our Reno in
there, except that our units don't have
much RAM for programing.
So I have to make it really sloppy code,
but it works. And all these things work,
and I'll be in the hardware hacking area
later for anyone who wants to any more
details or wants to play with it and
stuff.