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Topic: 3V motors with the Arduino Uno (Read 1 time) previous topic - next topic

ebun91

Oh okay. So is it safe to use the 5V pin?

dc42

Only for small motors with very low current requirement. Better to use a 5v wall wart.
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ebun91

What about when I use the motor driver? Can I just use the batteries?

meanpc

Didn't we cover how the battery pack would connect to the motor driver already?  It will connect to VMOT, and will supply all power for the motors.  The 5V VCC connection on the motor driver is just for logic level stuff.

I don't have the Ping, I have the Chinese HC-SR04, but I googled it for you:

First link shows you how to use the Ping sensor.  Pretty in-depth.

http://tronixstuff.wordpress.com/2011/11/28/tutorial-parallax-ping-ultrasonic-sensor/

2nd link is to a library so you can just do a #include on your programs and issue a simple command.

https://github.com/kristopher/Ping

I haven't tried either one, since I don't have a Ping.  You may need to find a newer Ping library if that one doesn't work with Arduino 1.0.  If you have more questions, I think I'd start another thread in the Sensors forum.

Good luck!
http://www.meanpc.com


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