Programmable LED Circle
Arduino compatible
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.
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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
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