[NJARC] Read resistor values with your smart phone.

[Thomas Lee]

This is a cut and a paste from the hackaday site


Reading Resistors With OpenCV
																				by Brian Benchoff
																			
																		
																	
																
																
																																			Here's
 a tip from a wizened engineer I've heard several times. If you're 
poking around a circuit that has failed, look at the resistor color 
codes. Sometimes, if a resistor overheats, the color code bands will 
change color - orange to brown, blue to black, and so forth. If you know
 your preferred numbers for resistors, you might find a resistor with a 
value that isn't made. This is where the circuit was overheating, and 
you're probably very close to discovering the problem.
The
 problem with this technique is that you have to look at and decode all 
the resistors. If automation and computer vision is more your thing, 
[Parth] made an Android app that will automatically tell you the value of a resistor by pointing a camera at it.
The code
 uses OpenCV to scan a small line of pixels in the middle of the screen.
 Colors are extracted from this, and the value of the resistor is 
displayed on the screen. 


The app is available for free on the Google Play store. 		 	   		  
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