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Using Arduino => Project Guidance => Topic started by: V_Alpha on Dec 06, 2012, 10:43 am

Title: A drawing machine.
Post by: V_Alpha on Dec 06, 2012, 10:43 am

Hi everyone,

I am currently planning a project just for fun and need some advice from the communauty. I have some "good" knowledge of C programming and am pretty confident about writing code to control hardware. However I am terible in electronic and have no idea where to start from...
The basic idea of my project is to create a drawing machine, a motor will move an arm for each of the X and Y axis, thus allowing to move in any direction. I am not going to consider the Z axis at this stage and the pen will touch the paper at all time. The machine will have to be kind of precise to allow good drawing accuracy. What kind of motors could I use, and which board is the best to start with ? I think I understood there are servos and motors, servos seems to be more accurate, but not sure which one is the best for my project. (I may have to add a third motor for the Z axis once I get the X and Y working). I also would like to have an ethernet port on the board.

Thank you for your help, and I will for sure keep you posted about the project.
Cheers,
V_Alpha
Title: Re: A drawing machine.
Post by: Grumpy_Mike on Dec 06, 2012, 10:47 am
As well as servo motors there are stepping motors, they offer precise control and can move continuously. Servo motors are restricted to less than 360 degrees.
Get an arduino with built in Ethernet.
Title: Re: A drawing machine.
Post by: V_Alpha on Dec 06, 2012, 11:21 am
Thanks :)
So this board should work ?
http://arduino.cc/en/Main/ArduinoBoardEthernet
(http://arduino.cc/en/Main/ArduinoBoardEthernet)
And I will control the stepping motors with PWM ?
On my way now to find good stepping motors (not too expensive as well).
Thanks again.
Title: Re: A drawing machine.
Post by: JimboZA on Dec 06, 2012, 11:25 am
Read about aforementioned steppers here: http://arduino.cc/en/Tutorial/MotorKnob
Title: Re: A drawing machine.
Post by: MarkT on Dec 06, 2012, 02:01 pm
Found some crazy and inspiring "drawing robots" here: http://www.youtube.com/watch?v=8xw6sDli1iA (http://www.youtube.com/watch?v=8xw6sDli1iA)

[ Perhaps not quite the same thing! ]
Title: Re: A drawing machine.
Post by: Grumpy_Mike on Dec 06, 2012, 03:20 pm
Quote
And I will control the stepping motors with PWM ?

No, you feed a motor drive with pulses or with patterns of on / off depending on the type of stepping motor.