[NJARC] Read resistor values with your smart phone.

[Pete AOL via NJARC]

That app reminds me of a telegraph key item which is a key mounted to a candlestick phone. You dial someone up and use the key. Why one wouldn't speak the message I can't imagine ..  Looking at the color bands on the resistor is kind of simple, no???  And likely you will only need to assess the first two color bands anyway ?? And if it looks burnt it probably is!!

Sent from my iPhone

> On May 15, 2015, at 8:59 AM, Thomas Lee <thomas_v_lee at hotmail.com> wrote:
> 
> Just remember
> Reply = Poster
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> 
> _________________________________________________________
> Hi Al,
> I installed it on my android phone.  Just access the link via your cell to download, it will prompt you to buy it, bypass that prompt  and install.  Perhaps the link doesn't work since I cut and pasted it.  I will forward you the email from hackaday.  
> I tired the app out and it doesn't work on blue resistors, and you have to have a very hand when scanning the resistor, I had to pivot the cell on a table to get it steady enough to get a good reading.  I'm sure they will improve on it soon.
> 
> Tom
> _________________________________________________________
> 
> Thomas, Have you actually found the app, especially for Android? All I see is computer geek BS like this: https://github.com/thegouger/ResistorScanner Demo is pretty impressive however: https://www.youtube.com/watch?v=h_bITwduLPk Al Al Klase -- N3FRQ Jersey City, NJ http://www.skywaves.ar88.net/ On 5/15/2015 3:33 AM, Thomas Lee wrote: > Just remember 
> 
> _________________________________________________________
> This is a cut and a paste from  hackaday 
> 
> 
> 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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