Article
Programmable LED Circle
Arduino compatible
During the darker days we're very keen to light things up a bit. (Christmas) lights are sprouting from the ground like mushrooms. This programmable LED circle fits perfectly in this picture, but is, of course, also suitable for other occasions. We already have Mardi Gras in mind...
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.
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.
PCB
Component list
Component List
Resistors
R1–R4 = 470Ohm
R5,R6,R7 = 10kOhm
Capacitors
C1,C2 = 22pF 50V, 2.5mm pitch
C3 = 10nF 50V, 2.5mm pitch
Semiconductors
D1 = 1N4007
IC1 = ATmega328P, programmed, Elektor Store # 150455-41
LED1–LED32 = LED, 5mm, high efficiency, 2.5mm pitch
Miscellaneous
K1 = 6-pin (2x3) pinheader, vertical, 2.5mm pitch
S1,S2 = pushbutton 24V, 50mA, 6x6mm
X1 = 16MHz quartz crystal
Button cell holder for 2 x CR2032
Socket for IC1, DIP-28, narrow
Resistors
R1–R4 = 470Ohm
R5,R6,R7 = 10kOhm
Capacitors
C1,C2 = 22pF 50V, 2.5mm pitch
C3 = 10nF 50V, 2.5mm pitch
Semiconductors
D1 = 1N4007
IC1 = ATmega328P, programmed, Elektor Store # 150455-41
LED1–LED32 = LED, 5mm, high efficiency, 2.5mm pitch
Miscellaneous
K1 = 6-pin (2x3) pinheader, vertical, 2.5mm pitch
S1,S2 = pushbutton 24V, 50mA, 6x6mm
X1 = 16MHz quartz crystal
Button cell holder for 2 x CR2032
Socket for IC1, DIP-28, narrow
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