Here
are some pictures of the prototype. The LEDs in the picture are
much brighter than they appear. Slow flash was used in this picture
which causes the LEDs to appear a lot dimmer then they really
are.
PWM board with 2 4 LEDs in series.
The LEDs are cross connected in a grid fashion.
The
test circuit inside the housing attached to the car. The finished
version will be two 5 x 8 array of LEDs and a smaller array
for the blinker. The LEDs in the picture are actually a deep
red and not white yellow.
The
final design will yield a brighter and larger area but even
with only 8 LEDs the array is very bright. The LED data sheets
suggest the use of 12-24 LEDs min of this type for taillight
applications. We will be using 80.