Help! DIY 4 amp L297/6203 driver

[tribbles]

I'd forgotten that 410R resistor off of Q2. That makes sense.

[Ross77]

I didnt want to use a PIC at this stage because I havent used them before and didnt want to have to learn how now. Looks like I'm going to have too tho as I'm struggling to fit it on the 3" x 4" demo board in eagle

So is the Burger cuircuit no good then, Sorry for being thick

The orignal thead was [ame="http://www.cnczone.com/forums/showthread.php?t=44802"]Problems with stepper driver (L297 and L6203) - CNCzone.com-The Largest Machinist Community on the net![/ame] but as its 3-4 years old I didnt see much point in posting

And the link is to a polish site, which obviously I havent got a clue what it says http://forum-cnc.pl/index.php?topic=55.0

[irving2008]

I didnt want to use a PIC at this stage because I havent used them before and didnt want to have to learn how now. Looks like I'm going to have too tho as I'm struggling to fit it on the 3" x 4" demo board in eagle

So is the Burger cuircuit no good then, Sorry for being thick

The orignal thead was Problems with stepper driver (L297 and L6203) - CNCzone.com-The Largest Machinist Community on the net! but as its 3-4 years old I didnt see much point in posting

And the link is to a polish site, which obviously I havent got a clue what it says http://forum-cnc.pl/index.php?topic=55.0

Yes I found that too... I couldn't find anything in English relating to the original design

[irving2008]

Yes I found that too... I couldn't find anything in English relating to the original design

However a google translate on post #3 'version 2006.04.26' throws up:

"

• -circuit protection -> T1
  -reduction system DC ... after inactivity -> PIC
  Power-split

"
So that confirms what the PIC does... but no info on the code... I wonder if this was ever built?

[Ross77]

Dam I tried google translate and it came up with a load of rubbish.

Do you think it might not be worth pursuing? I saw the first few designs that didnt have the pic so I presumed it would work without it but the idea of reducing the hold current sounds like a good idea given the buzzing and noise that I got last time.