How to power different voltage motors from same power source?
July 16, 2012
I am taking the "There are no stupid questions" comment to heart here.
I am hoping to power DC motors and servo motors from the same power source. The problem is, the servos want 6V and my DC motors are rated for 1.5-3V. A nice simple solution like a potential divider won't work, since each motor has a non-constant resistance, and a voltage regulator would be hideously inefficient. Adding a separate battery pack seems a silly idea, especially given the Arduino will have one of its own as well.
This sounds like an incredibly common problem to me, but I've looked all over the place and not even found anyone asking the same question, let alone finding answers. It's quite possible that something I've theoretically learnt just hasn't clicked yet.
Could anyone give me any guidance on what I should do, or link me to some kind of article/guide on such a thing? I'm sure this problem exists all over the place, probably even on these very forums, but clearly I don't even know what search terms to use.
Let me know if more information is needed for this to make sense. It should be fairly obvious I'm quite the novice. Thanks in advance for any help - I'm at my wits' end trying to puzzle this one out!