Power-Clock
About the Power-Clock PCB
Power-Clock is an open source PCB design by DutchMaker, published on GitHub. It is a 2-layer board measuring 121.9 × 121.9 mm, with 45 components from 27 distinct parts.
Other key parts include the 555, 74HCT04, MCP100-450D, 74HCT08 and 74HCT14. By type, the board carries 12 resistors, 11 capacitors, 8 ICs, 5 switches, 4 diodes and 1 crystal.
From the project
8-bit computer built (almost) entirely out of TTL logic chips
KiCad EDA is used for all circuit diagrams and PCB design. Get it for free at: http://kicad-pcb.org
- Add ./Libraries/.lib as global Symbol library to KiCad (Eeschema) - Add the ./Libraries` folder as global Footprint library to KiCad (Pcbnew)
- The FreeRouting application (./Libraries/freeRouting.jar) is used for initial PCB routing
- Arduino Mega Shield component: https://github.com/Alarm-Siren/arduino-kicad-library - FreeRouting: https://freerouting.org/
Main components on the Power-Clock
Power-Clock bill of materials (BOM)
45 components, 27 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 555 | DIP-8_W7.62mm | U1, U3, U4 |
| 1 | 74HCT04 | DIP-14_W7.62mm | U2 |
| 1 | MCP100-450D | TO-92 | U5 |
| 1 | 74HCT08 | DIP-14_W7.62mm | U6 |
| 1 | 74HCT14 | DIP-14_W7.62mm | U7 |
| 1 | 74HCT32 | DIP-14_W7.62mm | U8 |
| 1 | 1 MHz | Oscillator_DIP-8_v2 | Y1 |
| 1 | Power (5V) | BarrelJack_Horizontal | J1 |
| 2 | Conn_02x32_Odd_Even | PinSocket_2x32_P2.54mm_Vertical | BUS1, BUS2 |
| 1 | Polyfuse | C_Disc_D9.0mm_W2.5mm_P5.00mm | F1 |
| 1 | Single-step | SW_Tactile_SKHH_Angled | SW1 |
| 1 | Power | Switch_DPST_Angled | SW2 |
| 1 | CONTINUE | SW_Tactile_SKHH_Angled | SW3 |
| 1 | Single-step | Slide-switch | SW4 |
| 1 | RESET | SW_Tactile_SKHH_Angled | SW5 |
| 1 | 1N5340B | D_5W_P10.16mm_Horizontal | D1 |
| 1 | HALT | LED_D5.0mm_Horizontal_O1.27mm_Z3.0mm | D2 |
| 1 | POWER | LED_D5.0mm_Horizontal_O1.27mm_Z3.0mm | D3 |
| 1 | STEP | LED_D5.0mm_Horizontal_O1.27mm_Z3.0mm | D4 |
| 3 | 10nF | C_Rect_L4.6mm_W2.0mm_P2.50mm_MKS02_FKP02 | C1, C6, C9 |
Show 7 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 5 | 100nF | C_Rect_L4.6mm_W2.0mm_P2.50mm_MKS02_FKP02 | C2, C4, C5, C7, C8 |
| 1 | 220µF | CP_Radial_D6.3mm_P2.50mm | C3 |
| 1 | 100 nF | C_Rect_L4.6mm_W3.0mm_P2.50mm_MKS02_FKP02 | C10 |
| 1 | 1nF | C_Rect_L4.6mm_W3.0mm_P2.50mm_MKS02_FKP02 | C11 |
| 8 | 5K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R3, R5, R6, R7, R8, R11, R12 |
| 1 | 100K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2 |
| 3 | 330 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4, R9, R10 |
Power-Clock design files
The KiCad project lives in the DutchMaker/DM-02 repository on GitHub; these links point at the commit this page was built from.
Power-Clock: common questions
How big is the Power-Clock PCB?
The Power-Clock measures 121.9 × 121.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Power-Clock?
45 components, from 27 distinct parts. The full bill of materials is listed on this page.
Where can I download the Power-Clock design files?
From the DutchMaker/DM-02 repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Power-Clock design in my own project?
The repository has no license, so all rights stay with DutchMaker. Use it as a reference, and ask the author before reusing the design.
