Homebuilt ROVs Forum

http://www.infineon.com/dgdl/tle5206-2_ ... 3823a06a50

got the part no from http://forum.arduino.cc/index.php?topic=51996.0

Really only one step away from using a standard RC motor controller, which would use half as many port pins. Still, more compact and gives you the small task of writing a bit of code to drive them.

The simplest way, I think, would be to use a ULN2003 chip to drive normal P-channel FETs and the coils of the reversing relays. More bulky and still uses 2 pins per motor but parts are more easily obtainable. Easier to fix and can up the current without changing your whole design. You could run 3 FETs and 3 relays off a single 2003

Have you considered using a slave microcontroller (Arduino in this case it seems) to do just the motors, leaving the main controller to do everything else?

I have decided at this point to go back to, like you said the FET's, and relays to reverse. I know the H-Bridge will have a lot of problems before I can get it right. I can always go back and change. I am trying to make everything so I can go back and modify later if I choose. It seems that this will always be a ongoing project, adding this and that. I think I am going to use logic level FET's and use a 2003 to drive the relays because I am using 4 motors and that way will cut down on a couple of parts. I haven't thought about a slave as of yet but as I add things later, sensors and such, that is a thought. Maybe a MEGA for ROV #2. I chose the UNO because I thought it had enough ports to do what I needed. It adds up fast when you start building and adding things. Thanks.


Chuck