Stepper Motor Giveaway

[rmteo]

RMTEO, money sent. Please send the motors to the same address as the board. Please confirm you have received the money as I have never sent money through paypal before.

Thank You!!

Received it, thanks - will send motors to MD.

[cncmachineguy]

Received my steppers today They are the cutiest things. I question. There are 6 connections, are these uni-polar or bi-polar?

Thank you for these, I will make good use of them.

[rmteo]

They are bi-polar. Only the 4 inner connections are used - the outermost 2 are NC. See post #1 for a link to the data sheet.

[cncmachineguy]

thanks RMTEO, I had read the datasheet, then I confused myself when they had the 6 pin connector. BTW, do you have a favorite drive or chip (btw, I am not scared of the SMT's anymore)?

[rmteo]

This is what I would use http://www.allegromicro.com/en/Produ...3987/index.asp

[Heckler]

Sparkfun has this same chip on a nice little driver board... http://www.sparkfun.com/products/10267

[cncmachineguy]

Just a little confused. Here is the datasheet for the driver linked by RMTEO. I read it as having 1.5A output. Now I assume this is per coil. Am I wrong - again? The sparkfun board says .75A, so if I am correct, why half?

I am also baffeled by the motor supply current. 4mA max? this is on page 4, Ibb rating. Thats a pretty high gain by my book!

Edit: I see the SF unit is not the exact chip - that makes sense now. Still confused about the motor supply current