Help! DIY 4 amp L297/6203 driver

[tribbles]

Before you make any modifications, I've tweaked the schematic a bit to make the board a bit more sensible in layout.

Basically, I've renamed the components so that those beginning with "D" are the Digital part, those "A" are the bottom driver, "B" are the top driver (yeah, probably should've done them the other way around), and "P" is the power (top-right).

So when the board is laid out, it's easy to make sure that C13 (which is now BC3) is the smoothing capacitor to IC2 (now BIC1), rather than IC3 (AIC1).

Of course, that doesn't really matter if they're swapped, but I like it for symmetry

The other things are that R4 and R8 have been rotated through 180deg - you can see that the lines go through the middle of the resistors.

I'm not sure of your choice for PH1 and PH2 - 0.1" jumpers would be pushing it for the power consumption. I'd use the connectors that Irving and myself suggested. Also, the power connector may be a little too small as well (it looks the same kind of size as a 0.1" jumper).

I'll send you back the modifications I've made (there's also a custom library part which is a 100x80mm board that I designed; if you have problems with loading it, then let me know - I'll send you the library, although when it's done, I'll replace it with ordinary lines).

[irving2008]

Ummm, wheres the RC network associated with the (OSC)illator? Obviusly if you have multiple boards you should minimise noise by connecting (SYNC) together and you have brought that out to a pin for that purpose... but one of the boards has to be the master oscillator... unless you are doing that externally somehow...