Retro CMOS Clock (20 ICs)

1 year ago

Profile:A retro LED CMOS clock to give you that nostalgic feeling.

Open source license: GPL 3.0

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Description

This clock wouldn't have been out of place in 1981. It is fairly typical of the kind of clocks that hobbyists were building. The circuit consists of a set of counters and LED segment drivers. There is a small amount of logic to divide down the value of the counters to hours, minutes and seconds. A couple of buttons allow you to adjust the hours and minutes to set the time.

I have written an article about this project and uploaded it to the Hackaday website. Visit: CMOS Clock Hackaday Project Page

Documents

PCB_Retro CMOS Clock (20 ICs)

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ID Name Designator Footprint Quantity
1 100 uF C1 CAP-D3.0×F1.5 1
2 0.1uF C2,C7,C8,C9,C10,C11,C12,C15 RAD-0.1 8
3 7V - 12V DC Power In JP1 POWER_JACK_PTH 1
4 7-SEG-SC56-11 LED1,LED3,LED4,LED5,LED6,LED7 7-SEG-SC56 6
5 LED-5mm LED8,LED9,LED10,LED11 LED-TH_BD5.0_RED 4
6 button6*6*8.5 HOURS,MINUTES KEY-TH_4P-L6.0-W6.0-P4.50 2
7 330K Ohm R1 R_AXIAL-0.3 1
8 220 R2,R3,R4,R5,R6,R7,R10,R11,R12,R13,R14,R15,R18,R19,R20,R21,R22,R23,R25,R26,R27,R28,R29,R30,R31,R32,R33,R34,R35,R36,R38,R39,R40,R41,R42,R43 R_AXIAL-0.3 36
9 220 Ohm R8,R16,R17,R24,R37,R44 R_AXIAL-0.3 6
10 1K R45,R46,R47,R48 R_AXIAL-0.3 4
11 10k R49,R51 R_AXIAL-0.3 2
12 CD4060BE U2,U3 DIP-16_L20.0-W6.4-P2.54-LS7.6-BL 2
13 Crystal 32,768 Hertz U4 CRYSTAL 32768 1
14 74HC08 U6,U7,U14,U15,U17,U19,U20,U22 PDIP-14 8
15 74HC04 U8,U18 DIL14 2
16 CD4093 U9 DIP14 1
17 CD4026BE U5,U10,U11,U12,U13,U16 DIP-16_L20.3-W10.2-P2.54-LS10.2-BL 6
18 74HC365 U21 74HC193 1

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