Time / Interval Meter
with ATtiny
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,R3 = 10k
R2 = 1k
R4 = 39
R5 = 1kOhm8
P1 = 10kOhm preset
Capacitors
C1 = 22µF 35V radial
C2,C3,C6 = 100nF
C4 = 47pF trimmer
C6 = 22pF
Semiconductors
D1 = 1N4001
D2,D3 = BAT41
D4 = low current LED
IC1 = 78L05
IC2 = ATtiny2313, programmed, Elektor Shop # 080876-41
Miscellaneous
S1 = tactile switch, 6mm footprint
S2 = 4-way DIP switch
K1,K2 = PCB mount terminal block, lead pitch 5mm (0.2")
K3 = 10-way boxheader
X1 = 8MHz quartz crystal
LCD1 = LCD module, 2 lines, 16 characters, e.g. DEM16217
PCB, ref. 080876-I
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