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Retro CMOS Clock (20 ICs)
1 year agoProfile：A retro LED CMOS clock to give you that nostalgic feeling.
Open source license: GPL 3.0
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
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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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