Arduino Made Easy(er) The Welding Sketch – Lesson 08

Arduino Made Easy(er) The Welding Sketch – Lesson 08

welcome to another episode of Arduino
Made Easy this is lesson 8 and we’re going to go over the welder scene that I
did on a previous video so let’s see how we did that I’m Tom Kvichakc and this is
Toms Trains and Things this channel was created to help other modelers who are
need of guidance in pursuing their dream of building a model railroad we’re going
to put some animation in our model railroad today with this sketch of an
arc welder and some building lights and I showed you in a previous video how I
did that now I’m not going to take it apart and put it together because that’s
going to take a long time because we got seven LEDs on there and we have a sensor
now this sensor is the same sensor that I used for the gate crossing it’s a IR
sensor I’m gonna plug this in so you could see what this actually looks like will actuate it and you’ll see the four
LEDs come on right here and once those four LEDs come on then the arc welder
will come on now well how I have it and the sketch it’ll go through the cycle
three times and then it’ll then it’ll stop so that’s two times right there and
it’ll go through there one more time and it’ll shut off by itself you could set
this for how long you want it to stay on you could set it for how short you don’t
even have to have this sensor on here to even start it up you could do it without
the sensor and have it come on automatically as soon as you apply power
to it so I just wanted you to see the the sequence of events on here I have
all these set at a two-second delay if you would like to see more videos like
this go ahead and hit that subscribe button and while you’re at it doing that
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now let’s get started with this sketch right now so let’s go over to here now
you can see I have a few notes up here I have this adapted for the the pro mini
because that’s what I have on my layout simulates an arc welder and other
Lighting’s in the scene building lights are seven eight ten and eleven and arc
welder is pins two three and four where pin three is a pwm pin that’s because
we’re using an analog right to the glow pin so let’s start typing in here now we
have the four LEDs for the building so we’re going to start with that and let
me do it this way here all right so we got integer any it’s oh yeah that’s
awesome ledB1 equals seven Mt we need db2 equal 8 TB three equal nine and
tdb4 equal seven eight nine ten no I got sony 10 11 excuse me so we’re gonna do
it that way 7 8 10 11 I saved 5 6 5 6 & 9 those are the other
pwm pins on a pro mini for a future project I’m going to do something else
on that later so I left those pins empty for right now we’re gonna do 2 3 pins
for the arc welder now so int LED weight is on pin 2 integer
tell me d WP is on 3 n OT MP d DW e is on pin for those are the photos are all
the LEDs now we’re going into the sensor and the information that we’re going to
need the if statement so the first first one
for is the sensor that we’re going to use and we’ll call that sensor one and
we have that on a one now we’re gonna use a something that we did in the gate
crossing we’re gonna use sequence started and we’ll start that off with a
as a zero we’re gonna do a wait and this is for the delay between the building
lights and we’re gonna start that off with that 1000 milliseconds which is one
second and then we’ll have another variable in here cont and we’ll count
equal three now this weld count 3 you could change that to whatever you want
if you want your welder to stay on longer than three cycles through the
procedure then you could change this number right here on the well count
I kept it down low on this demonstration so it wouldn’t take that long you could
see it go through the entire process and also shut off so I left it at 3 okay the
next thing we’re gonna do is we’re gonna do the pin modes okay I’m going to copy
a little bit here sensor was an input and we need one and what I’m going to do
is copy this several times I’ll be two three and four so I just
changed the number on unit two three and four
now I’ll do it a couple more times we’re just gonna have to change it to white
blue and glow cane okay so control beam okay so LED white blue and last one we
just call glow pin now we have all that set up right there we’re gonna go into
the loop so we could see what’s going on with that and we’re going to just put
three procedures in there for right now we’re gonna create that we’re going to
put the procedures in here now in the loop and then create the procedures and
then write what we need to activate the procedures so the first one is going to
be the building lights being like LD ing missing this oops Capitol building
lights okay we’ll come down a couple and we’ll call the next one welder and the
next one okay so those are the three procedures
we’re going to do in there now like I showed you in a previous lesson we did
we wrote what those procedures are outside of the loop so we’ll go down
below the loop and then we’ll create those three procedures in here the first
procedure we’re going to do is the building light so let’s start with this
we’ll do Boyd Boyd building lights and then we’ll come down we’ll do our curly
braces and bring that down a few we’re going to do an if statement in there and
we’re going to test the see if the LED b1 is on or off okay and we’re gonna say
if digital read LED 1 b1 is low that means it’s off and digital read glow pin
is low that means that’s off then we’ll run this procedure if those if either
part of that is false say like if the LED is already on we don’t need to run
the procedure so it’ll just skip the procedure with the if statement so if
and we’ll have to do it at two of those tal or digital read LED b1 is low put
another parenthesis in there and Digital Read glow pin is low then it’s okay to start this procedure
so we have to put some curly braces in there for this and then we’ll put the
conditions in there for what we want to see so it’s going to be digital right LED before it’s high and then we’re
going to put the delay in there right now and we’re just going to say 2
seconds so we’re going to times 2 since the delay is 1 second 1000 milliseconds
now we’re going to do the same thing with all the rest of them so I’m just
going to copy this right here 3 so we’re gonna start off with 4 then we’re going
to do 2 3 and 1 that’s the way I had it on my original sketch so 3 & 1 & you
could do it in any order that you want it doesn’t have to be this order here
whichever order that you want to do it in but that’s how I did it in mind you
got the if statement in there if both of those are off we’re going to do whatever
it says in these 4 in these commands right here we’re going to turn on all 4
LEDs and we’re gonna wait 2 seconds between each step on there and and at
the end we’re also going to wait 2 seconds before we do something else
void you know de and then it’s put some lines up here so
we can see what we’re doing and we’ll also put the curly braces in there now
so we don’t forget them okay void welder so what we want to do
is we want to give it random on and off in there so with that random on and off
we’re going to do the count and then random and then the minimum and then the
maximum now these figures could be changed around we’re going to start to
count in here so we’re going to use a for statement and we’re gonna say
integer I equals zero we say I is less than count and then I we’re going to sequence
through it so what we’re doing right there is we’re taking the count and
we’re going to sequence through the count in between the random numbers that
are generated from Arduino between 10 and 60 it’s going to give us the on and
off for the LEDs curly brace in for that one for the for statement okay now in
the for statement we’re going to do a digital write for the LED white we’re
going to stay high and we’ll have to put out parentheses and that right there and
we’re going to put a delay in there a random delay and we’ll say 60 and you
could change this then we have to put two of those in there okay let’s move
this give us some more room here okay so we haven’t turned it on so now we have
to turn it back off so what I’m going to do is just gonna copy this right here and I’m going to make this low we’re
turning it off and going to give this a different value we’re going to keep it
off longer than we had it on so we’re giving it 200 okay we’re going to do the
same thing with the blue so what I’m going to do is come over here we’re
going to change this to blue at high and we’re going to give this a delay of 10
we’re gonna so it flickers at a different rate then the and it will copy
this so all we have to do is change the low and stuff okay so come over here
blue change this to low and change this to we’ll give this a hundred okay let’s
move this it’s move these things up here this is now we’re going to put another
four statement in here for the glow but we’re going to do it differently okay so
we’re going to do for integer we’re gonna call this one J equal 50 and we
could play around with figures on here to make it look however we want it to
look and do greater than one and J and we’re going to we’re going to
decrease it so we’re going to start at 50 and work our way down to one and so
after that we need to put in curly braces for that one okay and then we’re
going to do a right here analog analog right on the globe pin and with the value of J and we’re going
to delay that about 100 I have to set a delay for the entire procedure so I’m
going to do it you delay random here also and I’m going to set these to eight
hundred and two thousand and then we have to put two closing braces in there
and then that right there okay so there is the welder now what we have here on
the on the welder sketch is okay we have to count random 10 10 as the minimum and
60 is the the high and then for the integer zero integer less than count so
we’re going to take that and we’re going to count up between 10 and 60 at one
step at a time for the welder and so in the digital right for the white we’re
going to put a delay in there a random of 60 and that a maximum that’s not
saying it’s definitely 60 when you say random it’s when you have one figure in
there that is the maximum figure if you have two figures in here like that you
have the first figure which is minimum and the second figure which is maximum
so that’s what we’re going to do we’re going to step through the white and turn
it on and off at those random random times right there with these random
times so it’s not all the same and do the same thing with the blue but at a
different rate than the white and then on here for the glow pin we’re going to
turn the pin on after the white and the blue is
finished and it’s gonna start up high and it’s going to it’s going to start up
high and then get dimmer as it goes goes down to to one from fifty as it counts
down from fifty to one it’s going to get dimmer so that’s simulating the the glow
on the metal when it when they bring the stick up off of it
it’s glowing real bright and as time goes by it’ll get dimmer and that’s
exactly how a welder works come down here we’re gonna do video D and you t do
W and I don’t think that’s how I did it shut down yeah with an underscore okay
so we’re gonna work on that right now and all we have to do with this right
here is just shut all the LEDs off so let’s let’s just shut the everything off
here and so this is another thing where we’re going to put in the curly braces
first and then give us some room here so we don’t have to do it at the very
bottom of the screen okay so we have our beginning curly brace so everything
that’s inside of that will be in the procedure for setting it down so we’re
going to have to do a digital right led and we’re just going to start from
the beginning the b1 and we’ll do a low and a semicolon and so we’re going to do
this to all the led so I’m just going to copy this right here okay two three four
and then the three group glue in the three other pins okay so we’ll just
change this to two three four and then led this one will be white this one will be blue and this one will
be glow pin oh I could put an analogue right on that
okay we put an analogue right L ugh right on to glow pin and we’ll give that
a value of zero because we’re using the analog values on the glow pin and so now
what we have to do is we’ll go up here in the loop and play around with the
loop we want to start the loop up and what we want to do in there is we want
to read the sensor 1 we want to read this sensor right here and we want to
also see the sequences like we did with it with the crossing gate we have a
sequence and we’re not started yet so we want to put in an if statement about if
this is low now you remember whenever this whenever it’s not covered it’s high
so whenever you cover it it goes low so we’re going to say whenever we cover
that up and the sequence started is zero the sequence hasn’t started yet then
we’re going to go through this if statement and what we’re going to do in
the instance in the if statement is we’re going to say we’re going to change
the sequence started to true which is a 1 and then we’re going to turn on the
building lights so let’s do that right here so we’ll come up here and we’ll
write if if yeah let me see on these when you have to put – oops l digital
read of sensor 1 now where we’re going to read the digital read sensor 1 we
have to put a parenthesis there equal oops equal and we want to say low
because that is what’s happening in in there at this time whenever we cover it
up it’s going to low and where’s the end and okay is the
qu v NCE destiny or sequence started oops equal
okay zero zero okay now put two parentheses
in there now what’s it saying is in here is whenever we cover up the sensor and I
got to change that to a parenthesis okay we cover up the sensor and if the sensor
is covered and sequence started is false nothing has started yet then we’ll go
through this statement right here so what we’re going to do is we’re going
to put in our curly brace but we’re going to put the other one in after here
boom right there and we’ll come back up here and before we turn the building
lights on we’re going to say the equ is e sequence started equal 1 now what we
did there is we changed the state of the sequence from not working – working so
now we’re in the sequence and we’re turning on the building lights so that’s
where we are right now so what do we want to do after that we
don’t want to turn the welder on right now we want to put in an if statement
for the welder also so we’re going to have to do the same thing on the welder
we’re going to have to read the sensor and when the sensor is high that means
we’re not over top of the sensor like that so the sequence and the sequence
already started so whenever the this is not covered and
the sequence has already started then we’ll start the welder sequence so we’ll
write that in like this if digital right and the digital life
it’ll read we want to read the sensor sensor one put a parenthesis in there
and if the sensor is high that means there’s nothing over top of the sensor
do one of these and okay is the qu ence sequence started Eagle 1 and I see what
I did over here I didn’t need that right there okay now I’m gonna go back there
we go that’s it all right now we’ll do this
again put this in here and we’ll put the other one underneath the welder for the
end of it okay but before we get there we want to increment how many times we
want the welder to sequence before we shut everything down now if you want
this thing to stay on you don’t have to put this next line in there if you want
yeah once you once you trip it or you don’t even have to have the first if
statement in there if you want to have this on all the time you could just
forget about that first if statement and just put building lights put welder and
then not put the shut down the procedure in there but what I’m doing is in here
is I’m turning it on with a sensor so if somebody walks up to it it’ll start
going now I’m for this demonstration only I haven’t gone for three times so
you know it doesn’t have to we don’t have to sit here and watch it for five
minutes but anyway we’re going to put in a for statement for the welder and what
we’re going to say here is four and here we go with all those parentheses again
now this is where it gets tricky okay we’re going to do an integer we’re going
to call this one X because we already have an eye and a J and we don’t want to
confuse it even though the the other integers I and J are within the
procedure itself they’re contained within that procedure and don’t go
outside that procedure we’re going to call this different anyway just so
nothing gets confused here and we’re going to say equal one okay if that’s
equal to one and is less than or equal to and you know
welder count we’re gonna do a welder count right there semicolon and then X
plus plus and then close the parenthesis and then open up that and put another
thing behind the welder another curly brace for this or behind the welder now
this is where it gets tricky because your your have multiple curly braces in
here so you have to make sure that your curly braces are in the right place so
the for statement just has the welder in there and that’s what we want once this
second if statement is finished it’s going to step out and go to the next
line and that next line is a shutdown so what we’re going to do for that shutdown
is we’re going to change what the sequence is so we’re gonna say sequence
started and we’re going to change that back to zero and put that there and then
shutdown and that’s it now we’re going to go through this and hopefully I don’t
have any mistakes in here and we got to clean this up a little bit
so let’s see if this thing compiles okay I’ll click on that right there and we’ll
sit and wait if it’s not doing anything and you don’t see any error messages
popping up that means it’s going through there and changing it into machine
language and there we go it’s it’s done it’s done compiled so it works so let me
plug this thing in and it’s already got the sketch in there but for loop if did you
we’d sensor is low whenever I cover up that sensor and sequence started equals
zero then it’ll go through it’ll change sequence started to one and it’ll open
up the building lights okay and then when that is finished once the building
lights are on and you have that last two-second delay on there it’ll go
through this next one if digital read is high nothing’s over top of the sensor
and sequence started is true then it’ll go through the welder sequence and the
for statement in here where it says it’s counting and weld count is equal to
three right here so it’ll count it’ll go through that procedure three times and
once it goes through that procedure 3 times then it’ll drop down over here
it’ll change sequence started to false that means nothing’s happening
and it’ll go through the shutdown procedure so let’s walk this through
right now so I’m putting my finger over top of it
and the building lights are starting to come on ok so that’s so it’s in the
building lights once it’s finished with that it comes into here and it counts
out three cycles of that procedure so it’ll flash the white and the blue and
then it’ll the red will decrease it’ll do that three times and then once it
does that it’ll change the sequence started to false zero and you know shut
everything off just like that now that’s the procedure I have the
Fritzing diagram in the beginning I’ll put it in in the end also just because I
didn’t show you how I hooked all this thing up at the beginning so you know
I’ll have the code in there and everything else in there
thank you for watching I’ll have another video up sometime with the df’ player
I’m going to show you the sketch of the DAF player that’s the next one it’s
going to be up that’s a pretty simple sketch on there but that I just wanted
to show you how you can get to use that DF player
for your sound effects on your layout so we’ll see Ya

6 thoughts on “Arduino Made Easy(er) The Welding Sketch – Lesson 08

  1. Your intro reminds me of an 80’s synth band music video. In fact, wasn’t there a band called Arduino back in the 80’s? -Mark

  2. Tried to upload this to a "NANO"..nothing..won't there something in the code thats not compatible ?

  3. if I just wanted the sensor and building lights not having the welder could you just remove the welder part of the sketch

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