I have a microcontroller attached to a L293D. The L293D is then attached as a standard HBridge to a small DC motor. Enable is tied high, I can drive the motor forwards and backwards just fine. But if I try to brake the motor (by, for example, raising both input lines to the motor high), it just coasts.
If I tie the two motor lines together I get the proper braking effect, so its appearently not the motor.
I also do get high voltage on both the motor leads.
It appears that the driver is preventing current flow between the two sides of the motor somehow (perhaps some kind of isolation?).
Anyone have any ideas what I might be doing wrong? Can I use the L293D to do this?
Forgive my naivety when it comes to electronics, Im still learning (hence the project).