Hello dudes, i have assembled a board using this schematic
http://netikka.net/maggot/bipolar.png
Here's the board layout
http://netikka.net/maggot/bipolar_brd.png
X2-1 is +5v
X2-2 is +15v
X2-3 is GND
X1-1 is DIR
X1-2 is STEP
M1-M4 are the motor outputs
However it doesn't work.
I have measured about every pin using my oscilloscope but the only strange thing i found is that the outputs of the L6203's (pin 1 and pin 3) are high all the time, when i step it slowly (using jog in Mach3) i can see some small flickering around 14-15volt, but i assume it should switch between high and low.
Since i can't find anything wierd on the board, i'm asking if anyone can spot any errors in the schematic or board layout, i have checked the board about 10 times for solder bridges or stuff like that so i don't think that's the problem.
Any ideas what to look for would be nice, since i have no idea what might be wrong with this.
If you need more info just let me know, and sorry for my bad english
Greets
// MaggoT