Go Down

Topic: New guy here. What arduino to get to control motor speed and drection and... (Read 879 times) previous topic - next topic

apples

Hi all,  I am a total noobie to arduino so I would like some
guidance on what parts to purchase to do a specific task. 
Then later on I will need to know how to do it,lol.

So I want to control a motor to push an item along a linear
rail.  I want to controll the speed (I assume acceleration as
well) and the direction of the rotation of the motor shaft. 
Then I want to have a LCD screen and an input pad so that
I can say go this distance at this speed.  And have it
displayed on the LCD screen.

The actual running speed in real time will not need to display,
just the initial setting and direction.

I do not know what motors would be best to use?  stepper, servo,
normal dc motor etc.

With all that in mind, what board do I need to get?  Man it can
be a bit confusing to the beginner, so many boards.    I see
some have PWM, which I might need I think for motor control right?

I would rather get a bigger more featured board than a simple basic
board.  This way I can do more projects etc.  But price will still
have to be considered.

Peter
Australia

I am also new but I have built a simple little robot that follows lines. What I bought was a motor shield from Adafruit. The shield lets you control servo, stepper, and dc motors. For me I used DC motors and to get them to move two directions required an H-Bridge which I attempted to build and it didn't work which is why I bought the motor shield because it has built in H-Bridges.

You may be able to use a potentiometer for controlling the speed, or two buttons, one to raise the speed and one to lower the speed. I have personally never used an LCD screen so someone else will have to help with that.

I hope this helps! :D :D :D

Link to Adafruit's Motor Shield:
http://www.ladyada.net/make/mshield/

Magician

Quote
So I want to control a motor to push an item along a linear
rail.  I want to controll the speed (I assume acceleration as
well) and the direction of the rotation of the motor shaft.

Could you be more specific:
what motor horse power? it would depends on:
-how heavy items,
-how far you need to push them,
-how fast it should be done.
This mechanical requirements greatly affect selection of the hardware, and in some cases produce negative results of the available hardware.

apples

Could you be more specific:
what motor horse power? it would depends on:
-how heavy items,
-how far you need to push them,
-how fast it should be done.


Good point.  Well I am now using a 270oz steppermotor running it off mach3 and a geckodrive..
Speed is slow say up to 2meters min.

Peter

apples

evil-dalek, 

•4 H-Bridges: L293D chipset provides 0.6A per bridge (1.2A peak) with thermal shutdown protection, 4.5V to 36V

I don't think this is enough power  0.6A to use my current stepper.  I am just using the smaller G250X and it is 3.5A 50VDC maximum.
http://www.geckodrive.com/g250x-p-37.html

I want to get away from having to use the laptop/pc all plugged into the motor, and also mach3 the control software.  It will make portability much easier/better.


Okay, I haven't really used stepper motors, the adafruit shield was good for DC motors, but good luck with your project!  :D

Go Up