Now I'll explain how to connect the strips in series.
You will notice on each end of an LED strip at the connection points there is
printed IN and on the opposite end OUT. Cut a length of flat wire approximately
20cm. Taking 2 of the LED strips, solder the wire between the connections
(ensuring correct color connection) from one strips OUT end to the other strips
IN end. Take another length of wire and again use it to connect another LED
strips IN connection point to the previously connected strips OUT connection.
Connect the remainder of the strips in this fashion so that you have one long
length of connected LED strips.
Now to align the strips into columns. (This is probably easiest to do laying it
out on the floor.)
One end of the 7 LED strip length should have an unconnected IN. This point will
be the TOP-LEFT of the array, and that strip will be the LEFT-most column. The
strip following naturally makes up the 2nd column, although it is arranged so
that the IN point is at the bottom of the array and aligned upwards and
parrallel to the 1st strip.
Lay down the remainder of the strips alongside the other 2 in the same manner,
with the wire connections alternating at the top and bottom of the array. This
will be the array layout.
Now solder another length of flat wire to the TOP-LEFT IN point. The length here
is left to personal preference as it will be connected to the Arduino
At this point, you can affix the top and bottom end of the LED strips to
something to hold them in place. We used Coroplast (Corflute) and sticky tape.
Now, with the Arduino programmed with the provided sketch, and the Audio Analyser
shield in place connect the Data and Clock lines to pins 11 and 13 respectively.
Ensure that the ground of the power supply is connected to the GND of the
Arduino, and the 5V of the power supply connected to the 5V line of the LEDs.
Now just plug your audio into the 2 channel jacks on the Audio Analyser shield
and you're good to go!