I recently purchased some bipolar steppers to play around with from here:
I breadboarded the second circuit as shown in the Arduino Reference here but using an L293D:
I had a switching power supply from an old ADSL modem rated at 12v 1.5A which i would like to use to as my motor power but obviously the current output is a bit high so I am wondering whether i need to limit the current to the chip to stop it from smoking/getting too hot or killing my shiny new motors? and of course, if i do, how to do this effectively i.e a series resistor or some other better method I don't know about?
I had a look on the L293D data sheet but I cant seem to find a maximum input current (i may have missed this or am not understanding correctly as i'm a noob)
Can anyone shed light on this for me?