Tiny Counter
Frequency counter module using ATtiny2313
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.
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Component list
Resistors
R1,R2 = 390Ω
P1 = 1kΩ preset
Capacitors
C1 = 100µF 25V radial
C2,C4 = 100nF
C3 = 1µF 25V radial
C5,C6 = 27pF
Semiconductors
IC1 = 78L05
IC2 = ATtiny2313, programmed,
B1 = 2KBP005
D1 = LED, 3mm, red
D2 = LED, 3mm, green
Miscellaneous
LCD1 = LCD module, 2 x 16 characters, e.g. Displaytech 162
X1 = 20MHz quartz crystal
S1 = miniature PCB mount switch
K1 = mains adapter socket, PCB mount
14-way pinheader, 1 row, lead pitch 2.54 mm
2 solder pins
PCB, ref. 070954-1
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