Real Time Clock

argmafia

I was wondering if there is a way to integrate a Real Time Clock to the Basic Stamp.· We need it to turn stepper motors at certain times and don't know what to do.· We have no ports left on the microcontroller so if there is a way to integrate through the LCD, using its port that would be great.· If anyone has any ideas, please get back to me.

Thanx

Ryan Clarke

What are you using for your stepper control?

You could use something like a DC-16 for your steppers, and free lots of I/O lines. (One line from the stamp = 16 I/O lines per DC-16- you can cascade up to four of them on one I/O pin)-

Ryan

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Ryan Clarke
Parallax Tech Support

RClarke@Parallax.com

argmafia

Even though I need to turn the stepper motors at different times I can still hook it up with a DC-16(don't know what that is)???

ktekx

I believe Ryan is talking about the parallax product DC-16 board that allows you to control 16 output lines with the use of only a single serial line from the stamp. www.parallax.com/detail.asp?product_id=31216

From the description, you can chain up to 4 of them for a total of 64 output on a single serial line and drive your motors from a separate power supply.

argmafia

but... can you drive each motor separately from that one I/O that the board is connected to?

Ryan Clarke

Yes, you are simply issuing serial commands. The other products to look at would be:

www.parallax.com/detail.asp?product_id=30004

www.parallax.com/detail.asp?product_id=27938

And the DC-16:

www.parallax.com/detail.asp?product_id=31216

So for the DC-16 you would issue the commands for the Stepper positions like in the attached code. (Just some applications I was working on, the code will be cleaned up as I develop it- this is simply an adaptation of a stepper code written for direct drive of a stepper from a Stamp via a Darlington)-


Ryan

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Ryan Clarke
Parallax Tech Support

RClarke@Parallax.com