I'm working on a low-cost, let's say, "educational" motor shield, to play around with low power motors and learn the basics on driving theory.
The fact is I'm stuck with a feature you seem to have sucessfully implemented on your shield: the ability to work with 2 independent drive circuits as a single paralleled one! As you said on your post, this adds a lot of flexibility to the shield...
Could you, please, point me some directions for research?
I'm not sure about the kind of logic I'll need, a simple IC indication would be a great start!!
Here is my project on Instructables.com:http://www.instructables.com/id/Arduino-Dual-L293B-Motor-Drive-Shield-work-in-pro/
Thanks in advance,
P.S.: Congratulations for your shield... looks REALLY cool!