Working of heartbeat sensor Items tagged with Working of heartbeat sensor
Heart Beat Rate Meter
Hey guys I was just looking at the diagram for this circuit and was wondering what is the photocell being used, I am unfamiliar with a 220E.01000100
D1 is LED which is ultra bright and R1 is LDR value is 220....
this is a scanning mechanism these two are placed together as when you place thumb these two should have to be under your thumb....
LED will illuminate thumb and LDR will detect light and a s... Read Compelte post
Posted by coolmirza143 on Wed Feb 16 2011, 03:31 pm
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