Four in a Row
Play against each other or against the micro!
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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The use of our Gerber files is provided under a modified Creative Commons license. Creative Commons offers authors, scientists, educators and other creatives the freedom to handle their copyright in a more free way without losing their ownership.
Component list
R1-R12 = 47Ohm
R13,R16 = 100kOhm
R14 = 4kOhm 7
R15 = 180Ohm
Capacitors:
C1,C2 = 10µ F 16V radial
C3,C4,C5 = 100nF
C6 = 10nF
C7,C8 = 33pF
Semiconductors:
D1-D7 = 1N4148
D8-D49 = bi-colour LED (red/green) with common anode
IC1 = AT90S2313-10PC, programmed, order code 030146-41
IC2 = HEF4894BP
IC3 = UDN2981A
IC4 = 7805 or 1N4004 *
Miscellaneous:
S1-S8 = miniature pushbutton, 1 make contact
BZ1 = 6V DC (active) buzzer
X1 = 10MHz quartz crystal
K1 = 6-way SIL header
Case, e.g., PacTec type HP
PCB, order code 030146-1
Source and hex code files, order code 030146-11 or Free Download
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