Code Lock with One Button
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Materials
Gerber file
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Extra info / Update
Component list
R1-R8, R11 = 1k
R9 = 100
R10 = 6k8
Capacitors:
C1 = 100nF
Semiconductors:
D1 = LED, green, low-current
D2 = 1N4148
IC1 = PIC16F84 (programmed, order code 040481-41*)
LD1 = 7-segment display, red, common-anode (e.g., Kingbright Sc56-11SRWA)
T1 = BC547B
Miscellaneous:
JP1 = 3-way SIL pinheader with jumper
K1 = 3-way PCB terminal block, lead pitch 5mm
Re1 = relay, 5V coil, (e.g., Omron G6A-234P-ST-US-DC5)
S1 = switch, 1 make contact, tamper proof (see text)
X1 = 4MHz ceramic resonator
PCB, ref. 040481-1
source and hex code, ref. 040481-11
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