Hey
Sry if this post is in the wrong place ... I’m new in here
so I’m looking to make a drink machine my project is going to be made out of 1 step motor to drive the drink platform and 5 solenoid valves for the bottles. I also want a display to control what drink to make and so on.
I’m looking to bay this touch screen
http://www.adafruit.com/products/1651#Learn
ore this one just becouse off the stik for selecting
http://www.adafruit.com/products/802
the solenoid valves I think I’m going to use is this
http://www.adafruit.com/products/413
The stepper motor that I’m going to use is this one because I already Goth it
http://www.let-elektronik.dk/3307-bipol ... epper.html
But I’m worried that I might run out of pins/ports to control all of this on the arduino uno ??
Any one that can help me figure this out before I start ordering parts ?
drink machine made on a arduino is there pins enuf?
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Please be positive and constructive with your questions and comments.
- simondid
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- adafruit_support_bill
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Re: drink machine made on a arduino is there pins enuf?
There are 7 pins required by the shield. You will need one per solenoid. Motor control will depend on which controller you choose. If you pick one that has a 2-pin (direction and step) interface, you should have enough pins for your project.
- simondid
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- Joined: Sat Mar 01, 2014 9:46 am
Re: drink machine made on a arduino is there pins enuf?
Great to hear
So I think I’m going to be using this circuit
witch i think is like a 4 pin control circuit.
But i think it's easy to control form code it will just be a question on setting 1 analog pin high and shifting between the 4 pins am I right ??
sry for all the easy question I currently have 0 hardware so I’m just thing the project true before ordering any stuff
So I think I’m going to be using this circuit
witch i think is like a 4 pin control circuit.
But i think it's easy to control form code it will just be a question on setting 1 analog pin high and shifting between the 4 pins am I right ??
sry for all the easy question I currently have 0 hardware so I’m just thing the project true before ordering any stuff
- adafruit_support_bill
- Posts: 88087
- Joined: Sat Feb 07, 2009 10:11 am
Re: drink machine made on a arduino is there pins enuf?
That circuit will not work for your motor. It is a bipolar motor and cannot be wired as unipolar. You need a controller with an H-bridge.
Your motor also requires 2.2amps per phase, so the common L293D-based controllers will not work. Check the controllers at www.pololu.com, or the Phidget controller recommended for use with that motor: http://www.let-elektronik.dk/1067-phidg ... epper.html
Your motor also requires 2.2amps per phase, so the common L293D-based controllers will not work. Check the controllers at www.pololu.com, or the Phidget controller recommended for use with that motor: http://www.let-elektronik.dk/1067-phidg ... epper.html
- simondid
- Posts: 38
- Joined: Sat Mar 01, 2014 9:46 am
- adafruit_support_bill
- Posts: 88087
- Joined: Sat Feb 07, 2009 10:11 am
Re: drink machine made on a arduino is there pins enuf?
The L298 chip in that circuit is only rated for 2A. You need at least 2.2A. Check the stepper controllers at www.pololu.com. They have a good selection at reasonable prices.
- simondid
- Posts: 38
- Joined: Sat Mar 01, 2014 9:46 am
Re: drink machine made on a arduino is there pins enuf?
Unfortunately i need to build some off the circuits in this project myself and can't go buy all off the because it's a school project ...
but that circuit will work right if the motor wasn’t that big ??
I think the easy way to go then is to find a smaller stepper motor
Is there no where I can find a chip that can take more A then the l298 that have kind of the same layout so I can use the same circuit drawing??
sry for the many basic questions
but that circuit will work right if the motor wasn’t that big ??
I think the easy way to go then is to find a smaller stepper motor
Is there no where I can find a chip that can take more A then the l298 that have kind of the same layout so I can use the same circuit drawing??
sry for the many basic questions
- adafruit_support_bill
- Posts: 88087
- Joined: Sat Feb 07, 2009 10:11 am
Re: drink machine made on a arduino is there pins enuf?
You could find a smaller motor, or wire two L298 chips in parallel as in this link: http://www.ikalogic.com/4a-h-bridge-mot ... schematic/
- simondid
- Posts: 38
- Joined: Sat Mar 01, 2014 9:46 am
Re: drink machine made on a arduino is there pins enuf?
great i think i'm going to tray the parallel circut
Please be positive and constructive with your questions and comments.