And yet more items regarding rev 1.1 and "the Wave Shield webpage" (http://www.ladyada.net/make/waveshield/
) and its pages. This stuff should probably be dealt with.
the text showing a date of: May 17, 2011 20:07 (same date and timestamp for instructions for "version 1.1 of the kit")
The 2nd paragraph of the page tells us that there's a 3.3v regulator, and that it's the easiest thing to understand,,,, bbbbut, 5 paragraphs later the innocent reader is told about 4 nonexistant resistors used to give us a reduced voltage instead of 5v. The next paragraph tells us about another resistor and a diode that's not in my kit, nor allowed for on my board.
But I keep on reading.
- the image of an SD chip clearly shows 7 contacts
-When I look at my board I count 8 solder pads for SD card connections, 3 for the card holder functions, and 4 soldered tabs on the shell of the holder (which sure ought to be connected to Gnd).
-the section "SD / MMC Card holder calls out:
--2 "mechanical" ground
--1 logic ground
which adds up to 9.
What on earth?!?!?!???
So I go and dig up a few SD cards I have, and interestingly enough, the ones I have are quite unlike the image, having 9 connection pads (2 of which share a detent, presumably making them the "mechanical" grounds). What on earth is that thing in the picture, and from whence did it come?
I think I know what this unusual term "mechanical ground" refers to, but I don't understand how it differs from "logic ground", certainly on this particular board.
I had to go to Wikipedia and scratch through several possibilities to figure out what this "MMC" term scattered throughout the webpage might possibly have been about.
Educationally speaking, it's interesting to know about the 3 pins used for card holder functions, but it might be nice to mention (as done on the "Make it!" page) that those pins and functions are unused on this shield.
At this point I'm even going to offer to take a pic of a resistor of the correct size and values to use as R6, and formed into a "staple", so it can be posted in the img frame along side your text frame dealing with installation of R6 on the board on http://www.ladyada.net/make/waveshield/solder.html
. (instead of http://www.ladyada.net/images/conway/staple.jpg
If I seem to be going on a bit, it's sure not the kind of stuff I entertain myself with. I'm just trying to make sense out of what should be a bit better documentation. When a hardware rev comes out, documentation needs rev's (and competent proofreading) too,,, at least within a year or so!