 |
|||
|
|||
Measuring RPM via Photo reflector
Computer
Interface
|
This photo shows a closeup of the sensors in action. IR light is invisible to the human eye, but not to most video cameras. Any CCD camera can "see" IR light. A CCD camera is a very handy tool to have when debugging and testing an IR circuit. Since you can't see it, you don't know if its on. If you use IR LED's, you should use a CCD if you have one to be sure they are working before you waste a lot of time chasing some other problem that isn't there after all.
|
||
