Grasshopper

algorithmic modeling for Rhino

TouchOSC with Firefly are used to control the robot arm. Another version is made with lobster.

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Comment by zuobian youbain on May 30, 2018 at 9:22pm

A micro stepper motor for sale driver such as the A4988 allows higher resolutions by allowing intermediate step locations, which are achieved by energizing the coils with intermediate current levels.

Comment by Kenneth cheung on July 5, 2012 at 7:58pm

Sam,

I can send it to your email, and you may need to download a pay apps in iphone too.

Comment by Sam Ng on July 5, 2012 at 8:09am

Kenneth,

I am very interested in your Robot Arm project, I also want to build a robot arm being controlled by iPhone. would you mind sharing the source code and drawing?

Comment by Freddy on June 16, 2012 at 5:15am

Thanks for the link.

Don't worry about the stepper motor side, I'll help you with that.

Please send it to happytriger2000@gmail.com

Comment by Kenneth cheung on June 13, 2012 at 2:25am

Not much, but I just know that I can precisely control the turning angles and number of turns. By the way, you wanted the tutorial on the robot script? I put it on web http://kennethportfolio.weebly.com/grasshopper-projects.html

Where you want me to give you the source code? You may need a number of plugins being installed first.

Comment by Freddy on June 11, 2012 at 3:56am

This might be what you needed:

http://www.cerebralmeltdown.com/heliostatprojects/Arduino_Sun_Track...

http://www.arduino.cc/en/Tutorial/Stepper

How much do you know about Stepper motor?

Comment by Freddy on June 11, 2012 at 3:48am

"That's great. I was also thinking about using the stepper motor instead of servo.

@Kenneth,

              Is up to you if u want to use stepper, but in Automation industry, usually is AC servo.

"Do you know is there any code existing that can replace the use of a stepper motor controllor?""

Are you trying to use Arduino as a stepper driver? If so, then you need coding for that and is much harder, search Arduino forum, I'm not really good at coding.

I'm thinking of using iphone to control my RM-501....would you mind sharing the grasshopper and firefly definitions?

Comment by Kenneth cheung on June 11, 2012 at 1:25am

That's great. I was also thinking about using the stepper motor instead of servo. Do you know is there any code existing that can replace the use of a stepper motor controllor?

Comment by Freddy on June 10, 2012 at 11:37pm

Give this a try, turn RC servo to DC servo.

Hint: http://danthompsonsblog.blogspot.tw/2010/05/easydriver-42-tutorial....

take the code from D. Thompson, I've tried the code worked great:

http://youtu.be/qS4vIdKphJM,

for the same code it will also work for a DC servo driver:

http://www.leadshine.com/ProductList.aspx?Type=40

then you can run this robot (Mitsubishi RM-501) like you have there in the video but slight different in size and accuracy: http://youtu.be/meso-Wmbd_E

Great job by the way.

Comment by Nay Soe on February 29, 2012 at 4:27pm

Love it, that looks so fun. You should make it build a LEGO set

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