Infrequent posting ahead...
What does this blog cover?
Whatever I'm currently interested in.
I started this blog in 2012 to track what I was learning while I was teaching myself how to program an Arduino and play around with a 4x4x4 LED cube. That led me to 3D printing and Repraps, then I got distracted by FPV and racing quadcopters. So while my interests are all over the place they will generally be focused on 3D printing, Arduino, Raspberry Pi, photography, quadcopters and IT.
Tuesday, September 27, 2011
Little Black LED what are you?
What kind of LED is this, doesn't seem to be an Infrared LED
I got a grab bag of LED's from Jamco electronics and I got quite a few of these little LED's that look like they are black or some very dark color at the end. Using a lithium button battery I didn't see them light up at all. So I got out my camera and tried it again while looking at the image preview and didn't see it light up. I have used the camera trick before to identify infrared LED's in the past so I know the camera can pick up IR.