2,486
edits
Changes
Jump to navigation
Jump to search
Line 396:
Line 396: + + + + +
Activities/Turtle Art/Using Turtle Art Sensors (view source)
Revision as of 02:02, 22 July 2011
, 02:02, 22 July 2011→Using the LDR to measure your pulse
You need to experiment with the constant 3000 or the distance from the light to get the display onscreen.
You need to experiment with the constant 3000 or the distance from the light to get the display onscreen.
See also this video http://www.youtube.com/watch?v=y69Mu1SDXDk
Physics with the XO. A clothes peg with a white LED illuminates a LDR. If pressed between an area of translucent skin such as the lobe of the ear or the area between the thumb and index finger, the program monitors your pulse using Turtle Art by measuring the change in the percentage of transmitted light. (To optimize use red LED). You can measure heart rate.
==Photovoltaic panel==
==Photovoltaic panel==