Okay, I'm gonna show you how to add a third extruder, but I want to show you a couple quick things quick first
this is a
stepper board buy made by Yur Bot it allows you to do your
toggling of the
MS. One two and three right here, and then you have your pins to line up with your auxilary
so
What I'm going to actually use is this one that allows you to do two
And it's really simple
So let me review some pins real quick here
We have auxilary two that we're gonna use and the pins are as follow
This one right here is the ground pin
This is 5 volts pin
This is digital pin 59
this is digital pin 63
This is digital pin 40. This is digital pin 64
This is digital pin 44. This is digital pin 42
This is digital pin 65 and this is digital pin 66
then on the board
We have digital pins for extruder 1 and 2
What we have here is
It's hard to read but
We have got our 5 volts we then have our
Directory pin then we have our stepper pin then we have our
Enable pin, and then we have no change pin
then 4 X 2 or extruder 2 we have ground
we then have
Directory again step again, then we have enable and then we have no change
So to hook this up. It's kind of simple
to do
Watch the red strip on this
Basically plug it into your
Auxilary two
Take the other end
And plug it in
the same
Now there is a difference with
the
potentiometer on the A4988
You are actually gonna have in the other direction on this particular board and it's going to point
Down like it would be on a normal step except. It's over here and your power is here
Whereas on this board it would be the other direction?
so the next thing we want to do is add a
Stepper
Motor wire and then before we actually power everything up, so we make sure we're not going to destroy anything
We're going to plug in the USB into the computer and see if they get a green light on the board
Which we do, so we're gonna plug that for the moment
We're then going to add
First the negative cable which is right here. It's on D9
It's the third screw from the top
And that's gonna go into the ground which is on this side for this one
Tighten that down, then we're gonna put in the power cable. It's the plus side
Check it visually and do the same over here
Now once again, we're gonna plug in the USB make sure everything is okay, and then we're gonna do a power test
Looks good there, so now we're gonna attach
The power to the board and we're gonna throw the socket in the wall socket
And appears to be everything is fine, so I'm gonna unplug this for the moment because we don't need it for programming and
I'll show you how to set it up on the computer ...
Okay ..within the Marlin folder open version 1.1.6
We're first gonna edit pins. This is gonna be kind of simple
So we're looking for pins not pins.h, but pins_RAMPS.h because this is a 1.4 board
So you open up the file
Now here's where your driver pins occur so you have your steppers or your?
XYZ you have your
extruder one and extruder two notice how they're easier on E1
So the first thing we want to do
We want to copy E1
And then we want to modify E1 to E2
Now all these
References where you see E1 underscore CS
Underscore pin that's Chip Select. We are not gonna use that in any of the steppers
If you're gonna comment those out
Now we have to change the pins here ...
So the first pin is going to be pin 40
STEP for DIR it's going to be 63
And then for an ENABLE, it is going to be 42
So you're going to save that you're going to close the pins_RAMPS.h file if you have saved it
You're then going to then open up Marlin.ino, so here is a solution file
You're going to go to the configuration.h tab you're gonna first scroll down for boards
You're going to change this the EFF, so let's send two fans
Then you're going to scroll down to extruders I'm gonna change it from 1 to 3 and you are going to uncomment
Single nozzle gonna hit ctrl+s, to save
You're then going to compile and upload the file to your RAMPS 1.4
Okay upload is now complete so the next thing to do is go to Pronterface. So I am going to close this
Okay the first thing we are going to do is open up Pronterface.exe
Inside Pronterface.exe we have no other option for an extra extruder so we go to ...
Settings->Options
Extruder count change it to, 3, click. Okay button. to close.
Reopen it
Now we have the option for three extruders, we're using extruder 2 which is 0 1 2, so that would be the third one?
We're gonna plug in the power supply
For 12 volts
Go over to the send and type, "M302 S0"
Press ENTER
that will change the temperature for the thermistor to. 0 so there won't be a minimum, and then we're gonna press the
extrude button and see if it actually works
So it looks like it worked now. Let's try reverse and see if that works
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