Help! DIY 4 amp L297/6203 driver

[Ross77]

Wow thanks guys, thats a great help, now if i could just get someone to convert the schematic to a pcb and mill it for me.....:lmao:

Irving
The short circuit protection is for the the output chips, (see below)

Tribbles
Thanks for the very kind offer, Unfortunatly I have no idea where to start with the code. I can only guess that an output needs to modulate (or switch low) the vref line to set the hold current (possibly adjustable from a trim pot) and then an input needs to look for the clock pulse to reset full current when a signal is seen?

I would imagine that the timing's are going to be the hardest bit as it might loss the first step whilst switching back to full current?

Is there any reason why this couldnt be put on a separate board and just send the Vref lineto the driver board with the other signals?

Thanks again