PDA

View Full Version : SMPS2Dynamixel and Kinect?



Pi Robot
02-23-2011, 09:23 AM
Hello Power Experts,

I am planning on powering a Kinect using the 12V battery on the iRobot Create following these instructions:

Powering a Kinect on an iRobot Create (http://www.ros.org/wiki/kinect/Tutorials/Adding%20a%20Kinect%20to%20an%20iRobot%20Create#Cr eate_Serial_Cable)

In the instructions, a homemade 12V regulator is used. I have a few SMPS2Dynamixel adapters (http://www.trossenrobotics.com/store/p/5886-SMPS2Dynamixel-Adapter.aspx)lying around. Would one of these provide the required regulation for the Kinect if I hook one up to the Create's 12V battery? And if so, is it rated at at least 1A?

Thanks!
patrick

lnxfergy
02-23-2011, 09:34 AM
The SMPS doesn't have a regulator -- it's just got a couple capacitors and an LED.

-Fergs

Pi Robot
02-23-2011, 09:48 AM
Thanks Fergs. I was just rummaging around in one of my boxes of parts and found a DC-DC regulated converter that was designed for a car cigarette lighter. I'm guessing this would be more along the right lines? (It's rated at 1200ma.)

--patrick

lnxfergy
02-23-2011, 09:53 AM
Honestly, a $1.50 LM7812 (available at radio shack) supplies more than enough current. I'd have to say the Kinect probably averages less than an amp, unless you run that really crappy tilt motor.

-Fergs

Pi Robot
02-23-2011, 11:17 AM
Since my soldering skills are pathetic, I was hoping to avoid getting out the iron, but I may give it a try anyway. At $1.50 per botch, I can afford a little more practice...And no, I won't be using the Kinect's tilt motor--in fact, I already disconnected it.

--patrick

jes1510
02-24-2011, 01:28 PM
Don't forget to add some caps to that regulator!

lnxfergy
02-24-2011, 01:35 PM
Don't forget to add some caps to that regulator!

I believe the tutorial on ROS.org does specify caps and such....

-Fergs

Pi Robot
02-24-2011, 01:35 PM
Thanks--I would follow the instructions shown here (http://www.ros.org/wiki/kinect/Tutorials/Adding%20a%20Kinect%20to%20an%20iRobot%20Create#Cr eate_Serial_Cable) which includes the capacitors.

--patrick