►
From YouTube: Dallas Texas - STEAM Camp - January 2020
Description
Planning meeting for the Dallas STEAM Camp with Tom Griffing, co-facilitator.
1. Walking through the house facility available to participants.
2. Discussion about the cordless welder implementation path for the STEAM Camp
3. Discussion of event flow, internet, Raspberry Pi Tablet, and BOM purchases for the cordless welder.
Event annoucement coming up.
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B
B
B
B
B
Yeah,
so
somebody
this
over
here
is
my.
This
is
a
reverse.
Osmosis
filter
I've
got
it's
a
commercial
one.
I
got
it's
a
one
from
a
previous
Starbucks
install
yeah
and
anyway
it's
got
a
big
oil
pressure
tank
on
it
yeah.
So
so
this
is
the
room.
The
second
bedroom
I
told
you
about
I
got
a
little
table
here,
where
I
do
electronics,
yeah.
D
D
B
B
D
D
B
A
B
B
D
B
A
D
A
Were
our
guys
were
excited
about
the
idea
of
CNC
drill
which
we
can
do
off
our
CNC
axes,
so
we're
gonna,
see
and
Seadrill
the
whole
pattern
for
an
Arduino
and
then
on
a
copper,
clad
board
and
then
we're
gonna
draw
the
connections
by
hand
and
etch
it
using
caching,
and
then
we're
gonna
make
it
working
Arduino
and
we're
gonna
make
another
working
Arduino
on
a
strip
board
which
fits
the
bill
too.
So
I
think
we
can
really
now
going
through
understanding
how
a
microcontroller
is
wired.
I,
think
that's
gonna
be
cool.
A
A
D
A
B
E
B
B
A
B
B
D
C
A
A
A
B
D
B
A
D
B
B
B
And
I
haven't
even
showed
you
the
workshop.
The
workshop
is
about
1500
square
feet
right
now.
I
have
my
tractor.
In
there
and
and
I've
got
a
little
office.
Slash
your
bedroom
in
there
I
could
convert
it
either
way
put
another
bedroom
in
there.
It
has
another
toilet
in
there
that
you
know
I
just
got
to
get
water
in
there
and
then
it'll
work.
So
that
would
be
a
second
toilet.
Okay,
I'm.
A
B
A
B
D
B
B
A
You
can
turn
the
tablet
into
something
that
you
can
actually
make
calls
with
over
the
regular
networks,
but
anyway,
okay,
there's
a
whole
bunch
of
different
topic,
like
that's
a
cool
research
project,
but
we're
gonna
need
internet
for
people
to
serve
otherwise
we're
limited.
So
what
are
the
options
for
hotspots
like
if
we
were
to
buy
like
a
gig?
You
know
gig
hotspot
or
whatever,
or
on
your.
B
A
B
A
B
Don't
know
we
were
just
trying
to
do
a
while
ago.
How
do
you
measure
speed
on
the
phone?
I
I
don't
really
measure
speed,
but
that
the
main
main
thing
is,
if
I
hold
it
up
at
the
right
angle.
You
know
it'll
get
pretty
decent
reception,
but
all
I
know
is
reception
as
far
as
you
know,
just
as
far
as
conversations
and
I
can
do
Skype
on
the
phone
and
stuff
like
that.
That.
D
A
E
A
B
Put
it
this
way,
the
mobile
phone
towers,
they
broadcast
different
signals
and
the
the
lo
spectrum
signal
is
going
to
be
like
the
three
series.
You
know
the
3G
type
signals,
and
then
the
4G
is
a
new
one.
Lte
is,
is
the
the
latest
and
greatest
and
then
I
do
get
some
4G
LTE
out
here.
But
but
you
have
to
you
know,
point
the
phone
in
the
right
direction.
You
can't
just
carry
it
around
anywhere
and
have
it
work.
Okay,.
A
Could
we
set
up?
Can
we
work
on
setting
up
something
that
that's
I
would
say
we
probably
want
to
plan
on
so
you've
got
your
network,
which
is
like
10
Meg,
but
if
there's
like
six
people,
I
mean
we're
gonna
bog
it
down
pretty
bad
right,
6
to
12
people,
12
people
would
bog
it
down.
So
I
think
it's
a
good
idea
to
look
into
that.
What's
a
practical
way
we
can
look
into
like.
A
A
A
B
C
A
A
A
I
gotta
get
gone,
cuz
I
got
a
I
got
a
do
the
announcement,
for
we
really
need
to
publish
it
like
tomorrow,
and
I
need
to
really
towards
Smith
it
and
edit
it
quite
a
bit.
Maybe
you
can
check
that
out
after
we
hang
out
hang
up
here,
but
I
would
say
yeah,
let's
plan
on
having
a
thing
where
it's
like
10
bucks
for
a
gig
of
data
I
mean
a
gig
is
gonna
last,
like
one
good
day
right,
maybe
like
with
like
12
people
hundred
mega.
B
B
D
B
D
A
A
D
E
A
A
Okay
about
20
hours,
yeah-
definitely
yeah
great
great.
Let's
do
it
do
you
know
yes,
I'll
test
that
out
and
see
what
speed
you
get
and
then
that
might
be
the
perfect
solution
right
there,
we're
just
done
with
that.
Just
have
another
hot
spot,
so
yeah
between,
like
your
ten
mag
and
another
line,
it
should
be
pretty
decent
yeah.
B
Tell
me
there's
our
conversation
right
now,
you
getting
a
little
bit
of
latency.
Is
that
right
or
a
while
I,
don't
see
it
okay?
Well,
this
is
this
is
going
through
the
satellite
now
I
can
take
this
and
I
can
boost
this
signal
song
and
then
maybe
see
if
I
can't
get
it
they're
to
the
to
the
workshop
as
well.
A
Well,
yeah
yeah,
like
we
want
to
have,
if
we're
doing
the
Rd
in
a
workshop
like
it
we're
doing.
Reading
like,
for
example,
for
the
PI
tablet,
how
do
you
build
a
build,
a
phone
with
a
PI
tablet,
I
mean
that's
gonna,
be
some
web
surfing
yeah
we
want
to.
We
want
to
have
two
of
the
lines
going
in
there.
Yeah
yeah
as
far
as
latency.
No,
the
latency
is
pretty
good.
I
can
I
can
hardly
detect
it.
How
about
you?
Can
you
see
that
it's
latency
or
I
can.
B
A
Seems
pretty
good
all
right
great
what
else?
What
else
so
regarding
you
got
space
in
a
workshop
I?
Guess
you
clean
this
stuff
up?
Oh,
can
you
two?
Do
you
have
any
nice
pictures,
cuz
yeah
I
mean
according
to
Katrina's
deal,
we
can
frame
it
as
learn,
3d,
printing,
but
also
we're
you
know
we're
on
this
permacultural
kind
of
farm.
We
have
some
pictures
and
some
stuff
of
any
other
stuff
that
we
can
see
over.
There
is
for
people
who
are
interested
in
permaculture
or
not
really
I.
A
As
we
can
say,
this
is
an
opportunity
to
talk
about
3d
printers,
but
also
we're
interested
in
other
holistic
living
kind
of
endeavors.
So
that's
definitely
get
that
the
GQ
crowd
because
well,
this
is
probably
a
lot
of
them
by
you.
Cuz
you're,
like
Dallas,
is
all
military.
They
all
hiding
out
in
their
little
bunkers
in
the
countryside.
A
A
So
another
thing
is:
what
do
you
think
any
further
thoughts
regarding
your
ability
to
do
well
their
stuff
because
actually
thought
about
an
interesting
thing?
So
we
are,
we
want
to
build
an
electronic
Road
holder,
like
I,
showed
you
last
time
the
DIY
electrode
holder.
Basically,
the
stick.
Stick
thing:
hey,
there's
aluminum
welding
rods
and
what?
If
we
do
a
I
tell
you
never
tell
you
about
Meg
casting.
A
B
D
A
C
B
A
B
A
B
Yeah
yeah,
basically
it
was
when
selecting
the
IGBT
itself,
because
I
needed
to
find
one
that
could
handle
the
current
and
the
voltage
that
were
looking
at
so
I
looked
at
the
power
mosfets
and
I
saw
one
forum.
It
was
saying,
if
you're
switching
low
voltage,
the
power
of
MOSFET
is
probably
a
good
solution,
but
I
didn't
find
one
that
could
handle
up
to
like
a
hundred
volts.
Then
I
wouldn't
be
comfortable,
putting
one
there.
He
couldn't
handle
at
least
100
volts
on
there.
Okay.
B
B
Even
though
you
have
it
set,
say
it
60
amps.
You
need
to
have
the
initial
arc
where,
where
it's,
what
they
call
a
hot
start,
where
you
can
actually
supplement
it
with
some
more
current
in
order
to
get
the
arc
started
and
then
it's
it's
basically
a
current
thing.
You
look
at
it
from
the
perspective
of
current,
not
voltage
and
I
so
say,
got
that
that's
gonna
be
important
to
get
a
little
current
loop
in
the
output
of
it.
D
B
Did
find
some
code
and
I'm
posting
some
of
that
on
the
webpage,
and
so
this
is
code
about
how
you
go
about
starting
a
PWM
and
it
has
PWM
controller.
Now
this
is
in
the
Arduino
mega.
It's
got
like
like
three
different
PWM
controllers,
with
six
different
outputs,
and
they
they
control
a
little
bit
differently.
B
A
D
B
A
B
B
You
could
get
it
to
where
they
would
parallel
better,
because
if
you
have
each
one
of
them
has
a
little
resistive
load
on
it
before
it
goes
to
the
final
output,
then
that
will
allow
it
to
adjust
the
voltage
up
and
down
because
we're
going
to
be
driving
it
from
a
current
perspective
and
and
so
the
linear
resistance
on
the
output
will
help.
You
know
he
it'll
help
share
the
load
between
two
IGBTs
anyway.
I
also
ordered
an
oscilloscope,
because
I
want
to
go
through
and
start
testing
this
stuff
I
don't
know
test
it.
B
A
A
We
talked
about
taking
two
to
eight
millimeter
rods
and
welding
them
together,
but
since
about
welding
them
together
to
make
one-
oh
that's
a
practical
experiment
that
we
suddenly
practical.
But
it's
was
a
cool
express,
yeah,
so
I
don't
know
we
don't
have
a
great
application
for
for
the,
unless
we
can
figure
out
steel
resistant,
repertory
materials
in
the
meantime,
which
that's
shit's
all
secret
and
no
no.
We
can't
do
that.
A
Greensand
type
of
stuff,
but
I've
searched
for
it
quite
a
bit
and
it's
really
hard
to
find
that
like
people
say
one
thing
or
another,
they
can't
really
get
a
good
answer
on
and
what's
gonna
resist.
Well,
it
will
work.
The
green
sand
will
work
for
steel,
but
how
will
it
work
in
the
case
of
the
the
welding
application?
A
Is
that
like
mess
it
up
much
more
or
not,
because
I
have
not
seen
any
where
this
idea
so
that
the
point
is
I've
never
seen
anywhere
the
mega
biggest
casting
concepts
and
I
really
don't
understand
why?
So
it's
one
of
those
things
that
probably
are
fringing
up,
that
nobody
does
it,
but
I
think
it's
a
when
you
can
work
it
out
to
to
like
getting
it
working
properly,
I
mean
I,
think
it's
an
extremely
powerful
technique,
3d
print
and
then
MIG
weld,
but
you
need
the
refractory.
A
Did
you
consider
like
so
I'm,
seeing
like
with
the
specs
on
your
igbts
I
mean
you're,
barely
I
mean
it's
this
yeah,
it's
it's
doing
it,
but
why
not
like
super-sized.
So
instead
of
like
a
$2
MOSFET
or
IGBT,
it's
like
a
five
dollar
one.
That's
like
way
over
overkill.
Have
you
thought
of
that
too
or
not
we're?
Now?
Oh.
B
I've
been
looking
for
that,
but
what
the
thing
is
it?
Generally
speaking
when
you,
when
you
go
from
the
low
power
or
the
medium
power
MOSFETs
like
the
one
I
ordered,
and
you
go
up
to
the
next
one
day.
They
cast
it
in
a
block
in
a
plastic
module
and
when
I
was
telling
you
about
that's
really
cool,
because
you
can
bolt
it
to
a
heatsink
and
it's
all
modular
and
it's
very
nice
packaging.
But
the
thing
is
they
they're
pretty
expensive.
They
started
around
30
bucks
dating
if
you
find
them
used.
B
B
Maybe
that's
what
we
oughta
consider,
because
if
we're
only
talking
about
you
know,
if
we
have
to
have
say
two
toes
for
welder,
then
then
that
would
bump
it
up,
but
that
would
make
it
ridiculous.
I
mean
I.
Doubt
it
bump
it
up
by
sixty
bucks.
If
we're
talking
to
use
parts,
if
talking
new
I,
don't
know
what
that
would
do.
B
B
But
if
we
do
the
other
way,
we
can
use
a
transformer
and
then
we
can
switch
the
low
current
high
voltage
and
run
it
to
a
transformer
which
you
transfer
it
down
to
the
low
voltage
high
current
and
and
that
way
we
can
use
a
smaller
IGBT
to
do
the
same
thing.
But
we'd
have
to
have
a
transformer
in
the
mix.
Mm-Hmm.
D
A
Yeah
well,
let's
I
mean
it
sounds
like
yeah
these
ones.
You
select
the
yeah
I,
see
what
you're
saying
these.
These
bigger
ones
are:
yeah,
they're,
they're,
expensive
and
when
I
say
six
hundred
amps
six
hundred
volt
is
six
hundred
amp
and
six
hundred
volt,
that's
peak
like
not
the
average
its
peak
right.
B
D
B
I
mean
that's
what
you're
really
talking
about
you're
talking
about
the
transfer
of
heat.
When
you
start
switching
a
lot
of
current
and
then
you
know,
you're
gonna
end
up
with
a
cross
that
collector
to
emitter.
You
can
have
a
certain
voltage
there
and
the
more
current
you're
passing
it's
more
power.
You
can
dissipate.
I
mean
it's
just
a
straightforward
equation,
so
so
what
that
means
is,
if
you
get
a
gonna
switch
more
current
than
you
have
to
have
more
heatsink
capability
right.
B
C
A
B
B
A
B
A
D
B
B
A
D
A
B
E
B
A
A
B
D
C
B
B
A
The
thing
is,
we
don't
have
the
battery
power
to
drive
it
with,
though
cuz
they're,
because
we
were
planning
on
six
cells
per
students,
that's
18
bucks
per
student
for
the
batteries
and
we
were
gonna
stack
them
together
between
all
the
people
to
get
the
welder
so
yeah.
How
do
we
do
that?
So
we
say
we're
teaching
you
how
to
do
this.
If
you
want
to
actually
do
the
welder
you'd
have
to
get
more
batteries
with
the
tools
that
then
skills
you
got
from
this
workshop,
but.
B
A
D
A
People
take
that
system
home
and
then,
if
they
want
to
make
it
work,
they
need
to
get
a
few
more
batteries,
because
one
of
the
battery
sets
is
gonna,
get
like
you.
They
have
to
at
least
double
the
battery,
because
I
mean
those
batteries
are
rated
for
30
amps
peak
the
Panasonic
ones.
So
each
each
pack
of
20.
D
A
A
You
know
like
five
or
six
at
least
six
of
them
are
so
for
practical,
getting
towards
practical
purposes,
but
the
deal
is
we
teach
to
people
how
to
do
it?
So
do
you?
What
do
you
think
about
the
Kaylee
puppet
put
it
on
a
3d
printed
circuit
or
because
we
can
print
up
to
6
by
12
boards,
even
long
bigger,
because
we
do
we
do
40
printing?
We
do
the
thing,
stand
it
up
on
a
platform,
do
it
in
an
l-shaped.
So,
for
example,
our
control
panel.
A
D
A
A
A
We
have
one
we
have
one
button,
but
it's
too
big
to
be
like
that.
We
didn't
have
to
have
like
a
dedicated
work
and
we
have
a
working
one.
That's
we
published
a
paper
on
it,
it
all
works,
but
it
requires
the
one
we
did
is
at
five
to
four:
it's
a
six
axis
system.
It's
got
dual
on
each
axis,
so
that's
like
a
big
project
on
its
own
so
but
for
the
milling
part,
which
I
think
gets
you
short
of
that,
because,
okay
with
what
you
learned
in
this
workshop,
you
can
completely
build
it.
A
What
we'll
do
in
a
workshop
is
take
a
five
five,
five
motor.
That's!
What
we're
talking
about
today.
Take
a
five
five
five
motor
put
a
one
millimeter
million
bit
and
show
that
you
can
do
CNC
drilling.
You
might
be
able
to
do
like
a
tiny
milling
path
with
it.
I
mean
they
do
make
with
that
kind
of
motor
and
they
do
make
pretty
good
circuit.
Mills
like
you,
can
get
one-on-one,
bang
good.
That
uses
that
kind
of
motor
directly
coupled
to
a
drill
bit
without
a
spindle.
It's
just
directly
coupled
for
just
circuits.
A
So
we'll
learn
that
we'll
designs,
we're
thinking
about
designing
the
actual
holder
for
that
sense,
that
the
three
CAD
design
exercise
you've
rapidly
prototyping
that
so
he
completely
made
your
own
CNC
whole
drill
from
scratch
and
that
kind
of
technique
you
can
completely
do
to
this.
Extend
that
to
the
circuit
Milkha's
will
include
bed
leveling
in
that.
How
do
you
do
this
because
you
need
the
toughest
part
about?
Is
probably
the
bed
leveling?
What
would
a
bill
like
that?
A
A
A
I
mean
it's:
that's
like
a
whole
project
on
itself.
That's
doesn't
fit
with
like
this
integrated
skillset.
We
were
doing
3d,
printing
design,
collaboration,
electronics
and
then
more
designed
with,
like
the
Walter
welder,
the
battery
packs
and
then
a
project
being
the
PI
tablet,
for
we
talked
about
a
camera,
stabilizer
camera
a
light
and
tripod,
as
some
of
the
modules
built
around
that
end
and
I
got
excited
about
the
cell
phone,
because
I
think
we
should
probably
do
so.
A
D
A
Parts
per,
but
what
should
we
say
right
now,
because
I
got
to
come
up
with
a
budget?
What
am
I
charging
people
to
do
this
so
well?
I
was
thinking
he's,
definitely
200
bucks
and
CNC
3-axis
d3d,
universal
and
I
was
thinking
about
a
hundred
bucks
for
project
materials
for
the
PI
tablet,
which
means
screen
and
it
and
PI,
and
probably
a
camera
module.
So
if
you
like
around
a
hundred
bucks
there,
so
what
should
we
put
the
budget
beyond
that?
A
It's
like
kind
of
long,
maybe
like
50
bucks
for
all
the
other
materials,
maybe
20
to
50
bucks
for
all
the
other
materials.
So
what
would
the
budget
be
for
the
basic
welder?
Well,
they're
components,
so
we
know
we're
gonna.
Have
everybody
build
regardless
of
the
battery
pack,
because
the
battery
pack
is
the
18
bucks
for
the
six
batteries
about.
B
D
B
B
A
D
D
B
A
D
B
D
B
D
A
Materials
for
that
and
and
for
the
light
dimmer
part
like
let's,
let's
extend
people
hall
with
IGBTs,
definitely
likes.
That's
a
cool
thing,
so
like
I
would
say
like
for
now
this
certain
material
cost,
for
that
is
like
say,
20
bucks.
But
if
we
do
the
well,
there
might
be
about
like
50
bucks,
more
or
hundred
bucks
tomorrow
or
whatever.
If
people
want
to
take
a
prototype
while
they're
home.
A
A
Be
like
a
few
bucks
like
perfboard,
a
dollar
and
Arduino
chip
is
like
a
dollar
too.
So
it's
only
like
five
bucks
and
components
for
that.
But
if
what
we'll
probably
do
is
get
some
Arduino
backups
like
get
some
you
know
or
whatever,
but
yeah
yeah.
So
we
have
those
yeah
yeah
I
mean
that's,
that's
included,
ideally
we're
using
the
ones
we
made
because
that's
also
more
powerful,
like
we
made
this
completely
from
scratch
kind
of
deal
which.
E
A
A
D
A
So
we
have
a
redundancy
on
an
Arduino
because
we'll
definitely
have
the
wander
from
the
universal
controller.
The
idea
of
the
universal
control
is
kind
of
cool,
because
you're
showing
that
oh
wow,
this
thing
can
do
so
many
different
things
and
then
then,
on
board
designs
like
oh
wow,
that's
so
cool
I
made
it
and
it
actually
works
in
a
deal.
Yeah.
A
So
yeah
I
got
a
pretty
good
idea.
Yeah.
We
can
do
that
so
we'll
defer
the
materials
for
the
I
tablet
like
exactly
what
people
want
cuz
some
people
might
want
to
go
like
I
did
like
I
suspect
the
the
project
might
get
hijacked
to
everyone
wanting
to
make
a
phone
I
I
would
have
hijacked
it
to
a
phone
cuz,
but
we'll
let
people
decide
like
what
components
do
they
want
for
the
Raspberry
Pi,
but
the
base
line
is
you
gotta
have
a
TARDIS
case.
A
B
C
E
D
A
Have
the
hundred
dollar
tracfone
plan
right
now
for
the
year
just
ten
bucks
a
month,
but
this
thing
is
three
bucks
a
month,
so
I'm
gonna
downgrade
because
I
just
haven't
been
using
my
if
I
need
it.
I
cannot
always
add
minutes.
So
anyway,
that's
cool
but
yeah.
That's
a
definite
route
just
brought
to
work
with,
and
then
your
phone
costs
are
like
zero
and
then
you
can
upgrade
the
PI
and
you
can
not
worry
about
breaking
phone
screens
and
stuff
yeah.
D
A
I
think
we
got
a
good
idea
of
what's
happening
now.
I
can
put
together.
So
the
basic
idea
of
the
budget
yeah
because
we're
gonna
be
charging
people
like
when
we
charge
before
plus
materials
like
last
ticket
price
for
the
ninth
day
was
like
1200
or
so
it's
gonna
be
around
there
a
little
bit
more
because
we've
got
more
materials.
D
A
B
C
B
B
Send
that
like
I've
got
I've
got
a
Stoller
powered
irrigation
pump.
Yeah
also
they've
got
you
here:
dead
dogs
and
swales.
You
know
via
permaculture
style,
yeah
and
I
have
a
garden
going.
So
I've
got
some
some
mustard
greens
and
lettuce
and
stuff
like
that.
That
grow
in
there
too,
hopefully
they'd
be
able
to
survive
till
January.
You
know,
but
you.
A
Good,
that's
good
sounds
good,
so
I
think
I
think
I
got
what
I
need
so
I'm
gonna
write
the
announcement.
I'm
gonna
basically
do
that
and
I
want
to
publish
that.
Try
to
publish
that
tomorrow
and
take
a
photo
shoot
of
the
printer
and
more
things
and
stuff
like
that.
I'm
doing
not
so
what's
really
cool
I'm
doing
like
a
magnetic
attached
flex
plate,
so
you
can
take
the
prints
right
off.
You
can
snap
them
off.
So
that's
that's
in
basic
printer
as
well.
Okay,.
A
D
A
Sounds
cool
sounds
cool,
yeah,
I'm
glad
so
I
look
forward
to
it
and
it's
only
six
weeks
away,
so
we
go
and
just
get
get
rolling
on
it
and
do
the
first
experiment
and
focus
focus
on
a
collaborative
aspect,
all
of
us
Michelle
and
Chris.
We
all
felt
good
about
the
idea
that
we're
gonna
collaborate
like
whatever
we
do.
Is
we
constantly
upload
to
the
wiki
and
you
know,
divide
the
Raspberry.
A
A
A
D
A
A
Me
just
see
how
that
rolled
out
I
may
be
able
to
do
that,
because
the
ideal
thing
is
I
mean
we
wanted
you
on
the
second
month,
which
is
when
we
have
the
torch
table
and
we're
doing
some
machine,
big
machines
and
welding
and
torching.
So
that's
where
you'd
be
really
helpful.
So
right
now,
I'll
put
you
down
for
the
first
two
weeks
of
just
of
July
yeah,
okay,.