E-blocks Light Chaser Squared
Let’s complicate things!
If we wanted to drive 64 LEDs directly, we’d need 64 separate output lines. Having decided to stick with our 18-pin PIC16F88, we’re going to organize the LEDs into a matrix of 8 rows and 8 columns.
Materials
Gerber file
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Component list
R1–R8 = 22?
Semiconductors
D1–D64 = LED, diam. 3 or 5 mm
IC1 = 74HC138
Miscellaneous
J2B, J3B = 9-way sub-D plug, (male), PCB mount
J7B = 2-way terminal block, PCB mount
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