Uno R3 Problem with running a loaded sketch

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MikeJH
 
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Joined: Tue Dec 11, 2012 12:18 am

Re: Uno R3 Problem with running a loaded sketch

Post by MikeJH »

The battery is right out of the package. I checked it and it is putting out 9+ volts.

You are right about the resisters. I need to go over the resister values. They should be more like 500ohms or even a bit less

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adafruit_support_bill
 
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Re: Uno R3 Problem with running a loaded sketch

Post by adafruit_support_bill »

If you are looking for max brightness, calculate the value you need to get 20mA. For basic indicator use, you can typically get by with a lot less than max brightness (and use less juice!). 1K is a reasonable value for many applications.

MikeJH
 
Posts: 12
Joined: Tue Dec 11, 2012 12:18 am

Re: Uno R3 Problem with running a loaded sketch

Post by MikeJH »

Well, I swapped out the resistors with 400ohm ones (all I could find for now) and it works great. I think it was a combination of way high resister values and the battery connection not being very tight to Vin and Gnd. I fiddled with the connection and it runs fine.

Thanks again!

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