Clock
About the Clock PCB
Clock is an open source PCB design by AJain9199, published on GitHub. It is a 2-layer board measuring 46 × 39 mm, with 35 components from 20 distinct parts.
Other key parts include the 74AHCT1G14, LM555xM and 74AHC541. By type, the board carries 13 capacitors, 9 resistors, 6 ICs, 3 connectors, 1 crystal and 1 switch.
From the project
AOS16 is a self-made 16-bit Reduced Instruction Set Computer (RISC) on PCBs, complete with a homebrew GPU for screen output. It is fully planned, designed and fabricated from scratch. A Turing-complete, Harvard-style computer with a completely custom architecture, at a blistering
AOS16 is a self-made 16-bit Reduced Instruction Set Computer (RISC) on PCBs, complete with a homebrew GPU for screen output. It is fully planned, designed and fabricated from scratch. A Turing-complete, Harvard-style computer with a completely custom architecture, at a blistering fast 10MHz.
The project is divided into smaller subsytems on PCBs, designed to interconnect via a central bus.
Main components on the Clock
Clock bill of materials (BOM)
35 components, 20 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 74AHCT1G14 | SOT-23-5 | U1, U4, U5 |
| 2 | LM555xM | SOIC-8_3.9x4.9mm_P1.27mm | U2, U3 |
| 1 | 74AHC541 | TSSOP-20_4.4x6.5mm_P0.65mm | U6 |
| 1 | 10MHz | Crystal_HC49-U_Vertical | Y1 |
| 1 | Conn_02x03_Odd_Even | PinHeader_2x03_P2.54mm_Vertical | J1 |
| 1 | Conn_01x08 | PinHeader_1x08_P2.54mm_Vertical | J2 |
| 1 | Conn_01x02 | PinHeader_1x02_P2.54mm_Vertical | J3 |
| 1 | 1M | Potentiometer_Piher_PT-6-V_Vertical | RV1 |
| 1 | SW_Push | SW_PUSH_6mm | SW1 |
| 1 | LED | LED_0603_1608Metric | D1 |
| 7 | 0.1uF | C_0603_1608Metric | C1, C2, C3, C4, C5, C11, C12 |
| 2 | 0.01uF | C_0603_1608Metric | C6, C7 |
| 2 | 33pF | C_0603_1608Metric | C8, C9 |
| 1 | 1uF | C_0603_1608Metric | C10 |
| 1 | 100uF | CP_Elec_5x5.3 | C13 |
| 3 | 1M | R_0603_1608Metric | R1, R2, R4 |
| 1 | 100 | R_0603_1608Metric | R3 |
| 2 | 1k | R_0603_1608Metric | R5, R6 |
| 1 | 220 | R_0603_1608Metric | R7 |
| 2 | 33 | R_Array_Convex_4x1206 | RN1, RN2 |
Clock design files
The KiCad project lives in the AJain9199/AOS16 repository on GitHub; these links point at the commit this page was built from.
- Layoutclock/clock.kicad_pcb
- Schematicclock/clock.kicad_sch
Clock: common questions
How big is the Clock PCB?
The Clock measures 46 × 39 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Clock?
35 components, from 20 distinct parts. The full bill of materials is listed on this page.
Where can I download the Clock design files?
From the AJain9199/AOS16 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Clock design in my own project?
The repository has no license, so all rights stay with AJain9199. Use it as a reference, and ask the author before reusing the design.
More boards in AOS16
AOS16 Control Unit
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AOS16 GPU
81 × 60 mm106 parts4LNo license1
ALU
100 × 100 mm70 parts4LNo license1
AOS16 Double Buffer
50 × 75 mm63 parts4LNo license1
Bus boards
18 × 77 mm63 parts2LNo license1
AOS16 Program Counter
54 × 60 mm50 parts2LNo license1
Memory Controller
88 × 86 mm49 parts4LNo license1
AOS16 Register
36.5 × 47 mm44 parts2LNo license1
AOS16 Timer
33 × 36 mm30 parts2LNo license1
Reg4x16
35 × 60 mm22 parts2LNo license1
Bus Connector
107 × 77 mm13 parts2LNo license1