Correct resistor for "Quickie Projects - Portable solar charging tracker" ?

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planetscape
 
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Correct resistor for "Quickie Projects - Portable solar charging tracker" ?

Post by planetscape »

Hello, Lady Ada! First off, you ROCK! I love your site and your products! People like yourself have opened up a whole new world for me, as I find myself at a point in my life where I finally have a bit of time and money to pursue things for the sheer pleasure of doing them.

I am working on your "Quickie Projects - Portable solar charging tracker" (http://ladyada.net/make/solarlogger/). I believe you have a typo in your BOM; I think the "4.7K resistor" should instead be a 47K resistor, based on your schematic and the calculations described in the second paragraph of "Analog Stuff".

Please review and let me know if I am correct; I hope so, because I soldered the 47K in already. ;-)

Thanks in advance!

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adafruit_support_bill
 
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Re: Correct resistor for "Quickie Projects - Portable solar charging tracker" ?

Post by adafruit_support_bill »

That's right. & thanks for catching it for us. :D

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planetscape
 
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Re: Correct resistor for "Quickie Projects - Portable solar charging tracker" ?

Post by planetscape »

And it works! (Well, at least as best as I can test at night... :-) )

But I also needed to make a tiny change to the sketch from https://github.com/adafruit/Solar-charging-tracker:

Line 13 was:

LiquidCrystal lcd(2, 3, 4, 5, 6, 7 );

But needed to be:

LiquidCrystal lcd(3, 2, 4, 5, 6, 7 );

(because of the pin assignments under "LCD connect and test")

I am so excited because I think this was the most complex not-really-a-kit-but-good-instructions project I've completed to date! :-D

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