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Member Since 05 Aug 2010
Offline Last Active Jul 09 2015 02:21 PM

Posts I've Made

In Topic: Chris the star!

28 February 2011 - 02:26 PM

Great as always! Well done!

In Topic: Waterproof temperaturesensor for Netduino?

28 February 2011 - 02:45 AM

I'm not sure if this would work submerged. It says water resistant not waterproof.
Thermometer from GHI

In Topic: Color Sweeper

22 February 2011 - 01:38 AM

For those who have played with either the MinM - Miniature BlinkM or the ShiftBrite, how's the color mixing? The RGB LED that I got from Radio Shack is okay, but the color mixing is pretty lousy. I've tried various diffusers, etc., but still can't get decent mixing. Making "yellow" for example, always shows red and green as well.


In Topic: Color Sweeper

15 February 2011 - 07:32 AM

With common cathode, you'll drive power to each of the colors using OutputPorts or PWM. With common anode, you'd pull current through the LEDs by doing the opposite (i.e. writing 'false' to OutputPort would turn the LED off).

I prefer common cathode because it's straight-forward, but common anode may be more popular. Also--how much current do you need to drive?


I see what you mean about common cathode being more straigh-forward. For now, the project is just a single RGB LED, so not much current draw. It's one that I picked up from Radio Shack. I think I might want to go bigger/brighter at some point, but I'm not sure yet. I may also attach an LCD display.


In Topic: Color Sweeper

13 February 2011 - 03:28 AM

Funny that you should post this today - I've been playing around with a similar project this afternoon :) .


Okay. Crazy coincidence! I've been playing with RGB LEDs today too! I found out that there are at least two types: common cathode and common anode. Does anyone have pros/cons for using the different types? Any tips?


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