LED Garland Controller
All the colours of the rainbow
These days you can buy various types of LED garlands at a reasonable price. With these you can illuminate various objects indoors or outdoors with interesting lighting effects. When you use a garland with RGB LEDs you can even create a range of colours or continuously cycle through the colour spectrum.
Materials
Gerber file
CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.
Elektor recommends the Elektor PCB Service service from its business partner Eurocircuits or AISLER as the best services for its own prototypes and volume production.
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The use of our Gerber files is provided under a modified Creative Commons license. Creative Commons offers authors, scientists, educators and other creatives the freedom to handle their copyright in a more free way without losing their ownership.
Component list
R1 = 10kOhm
R2,R3,R4 = 430Ohm
Capacitors
C1,C3 = 100nF
C2 = 10µF 16V radial
Semiconductors
T1,T2,T3 = BD139 (or TIP 122, see text for mounting)
IC1 = ATtiny2313-20PU, programmed
IC2 = 78L05Z
Miscellaneous
K1 = 2-way-PCB terminal block, pitch 5mm
K2 = 4-pin pinheader, pitch 2.5mm
K3 = 6-pin ()2x3) pinheader, pitch 2.5mm
PCB # 120217-1
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