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Std EditionRetro CMOS Clock (20 ICs)
Profile:A retro LED CMOS clock to give you that nostalgic feeling.
License: GPL 3.0
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
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Open in editorPCB_Retro CMOS Clock (20 ICs)
Open in editorID | Name | Designator | Footprint | Quantity |
---|---|---|---|---|
1 | 7-SEG-SC56-11 | LED3,LED1,LED4,LED6,LED5,LED7 | 7-SEG-SC56 | 6 |
2 | CD4060BE | U2,U3 | DIP-16_L20.0-W6.4-P2.54-LS7.6-BL | 2 |
3 | 74HC04 | U8,U18 | DIL14 | 2 |
4 | 7V - 12V DC Power In | JP1 | POWER_JACK_PTH | 1 |
5 | CD4026BE | U10,U5,U11,U13,U12,U16 | DIP-16_L20.3-W10.2-P2.54-LS10.2-BL | 6 |
6 | 74HC08 | U6,U7,U14,U15,U17,U19,U20,U22 | PDIP-14 | 8 |
7 | 330K Ohm | R1 | R_AXIAL-0.3 | 1 |
8 | 220 Ohm | R16,R8,R17,R37,R24,R44 | R_AXIAL-0.3 | 6 |
9 | 220 | R15,R14,R13,R12,R11,R10,R2,R3,R4,R5,R6,R7,R23,R22,R21,R20,R19,R18,R31,R32,R33,R34,R35,R36,R25,R26,R27,R28,R29,R30,R38,R39,R40,R41,R42,R43 | R_AXIAL-0.3 | 36 |
10 | CD4093 | U9 | DIP14 | 1 |
11 | Crystal 32,768 Hertz | U4 | CRYSTAL 32768 | 1 |
12 | 0.1uF | C7,C8,C9,C2,C10,C12,C11,C15 | RAD-0.1 | 8 |
13 | 100 uF | C1 | CAP-D3.0×F1.5 | 1 |
14 | 74HC365 | U21 | 74HC193 | 1 |
15 | LED-5mm | LED11,LED10,LED9,LED8 | LED-TH_BD5.0_RED | 4 |
16 | 1K | R48,R47,R46,R45 | R_AXIAL-0.3 | 4 |
17 | 10k | R49,R51 | R_AXIAL-0.3 | 2 |
18 | button6*6*8.5 | MINUTES,HOURS | KEY-TH_4P-L6.0-W6.0-P4.50 | 2 |
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