2,486
edits
Changes
Jump to navigation
Jump to search
Line 398:
Line 398: − +
Activities/Turtle Art/Using Turtle Art Sensors (view source)
Revision as of 23:05, 24 July 2011
, 23:05, 24 July 2011→Using the LDR to measure your pulse
See also this video http://www.youtube.com/watch?v=y69Mu1SDXDk
See also this video http://www.youtube.com/watch?v=7TdpkDmWFdw
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.
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.