I m new to this forum and I don't know anything about electonic.
As a bonus I m italian... so forgive my english..
I ve an Arduino, one L293d and a 12v 0.35a unipolar with 5 wires:
I read some projects here and there so I thought: It s so easy!
And now I spent the last 4 days getting nothing...
It s so frustrating...
I tried all the tutorials.. but no one worked. Simply the stepper do nothing.
With some manual switches I got to make it move... but If I try to use the L293D... nothin again. It seems operating.. I also tried another one.. I feel like I missing something important..
I also got moderate results with proteus simulator, but if I try to use a 5v+ power source instead of Logicstate component... I get some strange voltages... is it normal?
Please, I know is not easy to help... (I hope the pic can explain abit better then I could)... I really feel like an idiot... it seemed so easy..
Thank u very much... to be honest I don't even know what pull up/down resistance are...
BTW I sorted out things a bit...
in the end I came up with something like that in the picture..
Sorry to bother u...BUT One thing is very obscure to me:
I know that a battery to work properly needs to be in a closed circuit, but in mine are not, they both go to the ground...
Considering I don't have the GROUND in practice (I use the power supply ground usually)... where should I hook them?
Or better, I know you can't teach me electronics via posts... at least... could u suggest me where to find this kind of info? In the book I read... I didn't find something similar : 2 batteries, IC, different voltages...
Both your batteries are driving closed circuits - one of these circuits happens to control current in the other, and both share a ground, but they are both circuits around which current flows.
