Now stuck with motors...
August 9, 2012
I am buying stuff from a local shop so that I can complete my projects. Unlike elsewhere, in this place, a motor is cheaper than servos. I have to buy from the motors on this page- http://www.thinnkware.com/index.php?route=product/category&path=39. One thing I'm stuck on is, my initial plan was to provide 4.8V to my board (ATMega 328PU+Motor Driver) by 4 600mAh rechargeable batteries (1.2V each). I'm gonna use a L293D as my motor driver (only one available here). Most of the motors there come under the stall current value of 600mA (max). However, most motors do want 9 to 12V this(like one I wanted to buy). Now the problem is, the L293D's data sheet (actually, the SN754410 says so) that the maximum output voltage (absolute maximum readings) will be Vcc Supply (not logic)+3V. Since I give Vcc Supply 4.8V, at absolute maximum, I'll be able to get only 7.8V which is too less. What should I do? I have to buy from there as I have no other option.
One more question is that I wanted to run not 1 but 6 similar boards on batteries. Only one of them will be a motor driver. Rest will consume pretty low power. Can I use one set of batteries to power everything (like what'll happen if I connect 6 arduinos in parallel to a battery. Will 5V battery be able to power all 6 arduinos?).
Ohk. Looks like what I wanted to do is not possible. I'm switching down to 9V toy motors and I'm gonna connect the battery directly (9V one).