1 MHz Frequency Counter
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Materials
Gerber file
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Extra info / Update
The software has been written for a 4.194304-MHz quartz crystal. To enable the microcontroller to be used with an 8.388608-MHz crystal, the program has to be modified as explained in the source code file, and then compiled again.
Component list
R1 = 10k
P1 = 1k preset
Capacitors:
C1, C2 = 27pF
C3 = 1µF / 16V radial
C4, C6 = 100nF
Semiconductors:
IC1 = 78L05
IC2 = AT90S2313-10PI, programmed, order code 030045-41
Miscellaneous:
X1 = 4.194304MHz or 8.388608MHz quartz crystal (see text)
LCD1 = LCD Module, 1 line, 16 characters
PCB, ref. 030045-1
project software, ref. 030045-11
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