greetings !
I made exact copy of this driver board http://pminmo.com/3axis/3axis.htm
only changes I made are instead of IRLZ 44 mosfet I used IRFZ 44
I am using some small unipolar steppers-3.9 V,1.3 A ,12 V power supply and current limiters 5.6 ohm ,9W resistors.
Now everything works fine,but resistors seem to heat pretty much,I can not touch them!
mosfets are not heating at all,even without heat sinks
Is this normal for current limiters to heat so much or I did something wrong here?
Thanks