Breadboard1 R 1 Wire6 Wire7 Wire8 Wire9 Wire10 Wire11 LED1 Arduino1 Wire60 Wire61 Wire64 PCB2 Note3 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd"> <html><head><meta name="qrichtext" content="1" /><style type="text/css"> p, li { white-space: pre-wrap; } </style></head><body style=" font-family:'Lucida Grande'; font-size:13pt; font-weight:400; font-style:normal;"> <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-family:'MS Shell Dlg 2'; font-size:8pt;">In this example, photocell values are read in through an 'Analog In' pin. The values are then used to control the blinking rate of an LED. </span></p> <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-family:'MS Shell Dlg 2'; font-size:8pt;">Using a multimeter, check the min and max resistance of the thermistor in different light conditions. Then calculate the resistor's value with the Axel-Benz formula: Rref = sqrt(Rmin*Rmax)</span></p> <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" font-family:'MS Shell Dlg 2'; font-size:8pt;">Related example:</span></p> <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><a href="http://www.ladyada.net/learn/sensors/cds.html"><span style=" text-decoration: underline; color:#0000ff;">http://www.ladyada.net/learn/sensors/cds.html</span></a></p></body></html> Wire25 Wire26 Wire27 Wire83 Wire84 Wire85 Wire31 Wire87 Wire12 Wire13 Wire14 Wire32 Wire33 Wire34 Wire35 Wire88 Wire89 Wire90 Wire91 Wire36 Wire92 Wire15 Wire37 Wire38 Wire39 Wire40 Wire41 Wire93 Wire94 Wire95 Wire96 Wire97 Wire16 Wire44 Wire45 Wire100 Wire101 R3