Propeller Board on Parallax Stingray, PWM

ErgoBot

Hello everyone,

for a science project I need to modify the acceleration, end-speed and curve trajectory of my parallax stingray bot.
Therefore I was planning to use Pulse-width modulation. I have no previous knowledge in programming the propeller board, respectively PWM.
Any proposal of a simple code that I could implement and use for my studies would be greatly appreciated!
Thank you all!

greetings
Jakob

Hal Albach

What programming language are you using, Spin, C/C++, PASM, FORTH . . . ???

ErgoBot

Thank you for the reply!
I want to be using spin if possible.
In my Stingray Robot manual there is a reference to an object "PWM_32".
However I could not find the described download.
Could you give me any information on that object?

Hal Albach

I cannot help you with Spin, I do most of my stuff in C. However, there are several PWM objects in OBEX which you can get to via the Parallax Home page.

Publison

ErgoBot wrote: »

Thank you for the reply!
I want to be using spin if possible.
In my Stingray Robot manual there is a reference to an object "PWM_32".
However I could not find the described download.
Could you give me any information on that object?

That was a hard file to find on the web, but I had one archive on my hard drive.

Hope it's the correct one.


EDIT: It's also in the OBEX:

http://obex.parallax.com/projects/motor-control?items_per_page=All