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Project Help and Ideas » OK to put Label on MCU?

November 04, 2012
by vladarino
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I often find myself doing some counting when trying to figure out which pin of my ATMega168 is in which row on my bread board. I ended up printing a little label using Excel, double-sided tape and my printer. The label sits right on top of the chip and makes it easy to know which pin is where.

Is this a no-no due to risk of putting paper on the circuit leading to a small fire? It's only on my prototyping breadboard so I'm not worried. But as a general question I was wondering if other folks do this.

Thanks.

November 04, 2012
by mongo
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I doubt the chip would generate enough heat to light the paper. It also would not really have any effect on the chip either.

It's a novel idea that can certainly help in learning the ins and outs (pun intended) of these magical little gadgets.

November 04, 2012
by vladarino
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Yes, definitely helping make things easier for me. Glad to hear it's not a big safety issue. If anyone is interested I can post my Excel settings (fonts, row/column heights, etc) used to print the labels.

November 05, 2012
by Ralphxyz
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Yeah vladarino, please post your Excel sheet or at least the settings. I like the idea!!

Ralph

November 05, 2012
by vladarino
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Here you go:

Excel file

Picture: https://docs.google.com/file/d/0B6MWgGjpybUaNXVXTlZSTnNKcEE/edit?pli=1

The second sheet of the Excel file is a register summary that I keep around. I have a version where I wrote notes on some of the bits and registers for quick reference. Maybe other folks have something similar they use as a cheat sheet for the mcu data sheet. Maybe we can collaborate.

November 06, 2012
by Ralphxyz
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Thanks vladarino,

I would need to label pin 27 SDA and pin 28 SLA with maybe a color bar, I can never remember which pin is which for I2C pinout.

Of course pins 16 (SS), 17 (MOSI), 18 (MISO), and 19 (SCK) would be nice to have highlighted!

I like the idea, I hope I get around to using it.

Of course this would make a nice article in the Nerdkits Community Library

I like the picture, I do not know if google docs allows one to use a link so that you could have put the picture inline in the thread.

Ralph

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