The 2007 Color Changing Christmas Light Project: Six Channels of LED + 3 Channels of Hobby R/C Servo
This is a 'Do it Yourself' version of the regular pixels, with a few enhancements.
30 LEDs, 6 each of red, green, blue, white and amber. All components are throu-hole for your assembling pleasure. Also three channels of Hobby R/C servo control.
The 10 RLeds vary depending on the color you're using. Drive the LEDs at 20 mA and use Ohm's law to calculate the value needed,
Bill of Materials:
A1-A6 Amber 5mm LED
B1-B6 Blue 5mm LED
C2 10 uF 25V Electrolytic
C3 1 uF 10V Electrolytic
C4 .1 uF ceramic / monolithic
D1-D6 Red 5mm LED
G1-G6 Green 5mm LED
J1, J2 RJ45 Jack
PGM 1x5, .1" spacing header for programming
R1, R2 Rred
R3, R4 Rgreen
R5, R6 Rblue
R7, R8 Rwhite
R9, R10 Ramber
R11-R16 1K ohm
SERVO1 PINHD-1X3
SERVO2 PINHD-1X3
SERVO3 PINHD-1X3
SRVO_PWR PINHD-1X2
T1-T6 2N3904 TO92 NPN TRANSISTOR
U1 PIC 16F688-DIP
U2 SN75176-DIP
U3 78L05 regulator, TO-92 package
W1-W6 White 5mm LEDThe LEDs are arranged in this pattern:
R G B W A R
G B W A R G
B W A R G B
W A R G B W
A R G B W AHere's the component layout diagram:
And the schematic is here as a PDF file.
EDIT:
The first batch of boards a small fabrication error. Here's how to fix them in 3 easy steps:
