ON 20031024@4:37:02 PM at page:
http://www.piclist.com/techref/io/sensor/power.htm
JMN-EFP-786 James Newton archive reference
http://www.piclist.org/techref/postbot.asp?by=time&id=piclist/2003/10/23/083518a
PICList post "<I>Pic based wattmeter (I forgot the attachment !)</I>"

ON 20031026@12:48:21 PM at page:
http://techref.massmind.org/techref/io/sensor/light.htm
JMN-EFP-786 James Newton Says
/techref/phototransistors.htm
Phototransistors