Sandy Noble's modifications to Adafruit's Motor Shield

Chatting with Sandy Noble over at the Polargraph website has been extremely helpful. 1  It looks like he’s added three changes to the Adafruit Motor Shield:

• Heatsink added23
• Breakout boards to connect the terminals to the clips for the motor leads.  However, it looks like there’s a small little component of a circular purple variety also on that board.
• Extra pins for hooking up a cooling fan.  Sandy says he doesn’t use them any more, but it really wouldn’t be a bad idea given that it would take hours for even a simple print.

1. The photo is from Sandy Noble’s photo stream.  It says All Rights Reserved and I will happily take it down if he asks and says this is not a fair use.  Given that all of his stuff has been very open source, I’m guessing this was just a default setting. [↩]
2. To the H-Bridges? [↩]
3. Also…  Where does one get a heatsink?  How do you attach it? [↩]