user33281: can I power up my Arduino UNO with four AA batteries? It's about 6V, will my arduino burn? And, if I power my Arduino, I have to power my Motor Shield too or not?
I want to make line follower. I have to know what I have to power up. I dont know, how many battery holders I need. I have: Arduino UNO, motor shield, two 6V DC motors

user33160: You won't damage the Arduino if you remove the power to the motors as even though you're using the same power supply to power the motots and Arduino (4 x 1.5 - 6V batteries) you're not powering it from the Arduino pins itself.
What exactly are you trying to accomplish here?  Post some more info.

33281: <p>can I power up my Arduino UNO with four AA batteries? It's about 6V, will my arduino burn? And, if I power my Arduino, I have to power my Motor Shield too or not?</p>

<p>I want to make line follower. I have to know what I have to power up. I dont know, how many battery holders I need. I have: Arduino UNO, motor shield, two 6V DC motors</p>
 33160: <p>You won't damage the Arduino if you remove the power to the motors as even though you're using the same power supply to power the motots and Arduino (4 x 1.5 - 6V batteries) you're not powering it from the Arduino pins itself.</p>

<p>What exactly are you trying to accomplish here?  Post some more info.</p>
