that the plate is right-side-up. Use a drop of hot glue on the top and
bottom of each switch to affix it in place.
+[[wires.jpg]]
+
Once the switches are in place, the matrix must be created. I
recommend getting red wire for the rows and black for the columns. The
rows need eight strands of wire with the insulation exposed at
-intervals matching the spacing of the switches; see [[https://secure.flickr.com/photos/43319799@N00/12669228444][this photo]] for
+intervals matching the spacing of the switches; see the above photo for
details. You could also just use many short stripped segments of wire
instead of a contiguous piece. Most of the row wires will need four
segments of insulation, but you'll need two with five for the rows
in the same column with the left one in row 3 and the right one in
row 4.
+[[matrix.jpg]]
+
The exposed sections of row wire should be connected to the higher of
the pins on the switch using a diode. Be aware that diodes are
directional! The band around the diode should point to the top of the
rows are wired, the remaining (negative) pin of each switch should be
wired into the negative pin of the switch above and below it. Use
black wire. This should be slightly easier since no diode is
-necessary. [[https://secure.flickr.com/photos/43319799@N00/12668880863][This photo]] shows the completed matrix for one side. Test
+necessary. The photo above shows the completed matrix for one side. Test
each row and column as you go with a multimeter. You should be able to
get continuity from row to column when the corresponding switch is
activated.
B4. It's important to realize that when you flip over the board
in order to solder it, you have to flip over the schematic in your
mind too. If you count your columns from the left, you'll get them
-backwards. (Which I actually did for the first half.) You can see [[https://secure.flickr.com/photos/43319799@N00/1270569443y3][my
-wiring of the microcontroller]].
+backwards. (Which I actually did for the first half.)
+
+[[controller.jpg]]
Once you've wired one side of the microcontroller in, it would be a
good time to test it. You'll need to install the [[http://www.pjrc.com/teensy/loader.html][teensy loader]] and