In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Sparks-R-Fun wrote:

[b]RobotWorkshop:[/b]  The board looks nice.  Good job!  I know you like the kit idea, but I think there is probably an interest in an assembled and tested version as well.  I understand you said it has an on board 800ma regulator.  Nice.  Where is that, on the underside of the board?

[b]Günther:[/b] My personal interest in a "straight-through" adapter for the SX48 would be for a 48-pin DIL-shaped carrier.  I could also go for something long the lines of what DaveG was describing, though for me it would need to be priced very near to the current SX48 proto-board price.  That is hard to beat!  The key desirable feature, as I see it, is the ability to drop it straight into a breadboard.

Also, it seems to me that for a DIL arrangement vs. a square the real estate layout would change but the total circuit board area would not significantly increase.

Here are some quick calculations I did.

[b]Square Arrangement:[/b]

(48 pins) / (4 sides) = 12 Pins/Side

(12 Pins/Side) * (0.1" Spacing/Pin) = 1.2"/Side

Call it about 1.5"/Side as you have done to allow 0.3" for circuit board edges.  (0.3" might be a bit much.)

Circuit board area is then approximately (1.5") * (1.5")  = (2.25 "^2)


[b]DIL Arrangement:[/b]

(48 pins) / (2 Rows) = 24 Pins/Row

(24 Pins/Row) * (0.1" Spacing/Pin) = 2.4"/Row

Assume the rows are spaced 0.4" apart along the short side.

Now add 0.3" for circuit board edges around each side as was done for the square arrangement.

(2.4"/Row) + 0.3" additional = 2.7"/Row

0.4" + 0.3" = 0.7" along the short side.

Circuit board area is then approximately (2.7") * (0.7")  = (1.89 "^2)


I may have overlooked something, but it seem to me that a DIL arrangement would actually require less real estate area than a square arrangement.

Just thinking...


- Sparks

---------- End of Message ----------


You can view the post on-line at:
http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=166781#m166927

Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com

The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2007 (http://www.dotNetBB.com)