Zx2 clock
About the Zx2 clock PCB
Zx2 clock is an open source PCB design by krzys9876, published on GitHub under the MIT license. It is a 2-layer board measuring 53.3 × 63.5 mm, with 24 components from 17 distinct parts.
Other key parts include the 74HC14, 74HC74 and CD4060. By type, the board carries 10 resistors, 4 ICs, 4 capacitors, 3 diodes, 1 crystal and 1 connector.
It belongs with the test & measurement designs in this gallery.
From the project
KiCad projects (schematics and boards) for a full-diy ZX Spectrum replica
All boards that I designed, etched and soldered to create a full-diy replica of ZX Spectrum. Kicad4 (just a keyboard) and Kicad5
This is NOT a cycle-perfect replica so do not expect to launch fancy demos on it. The project started as a breadboard simplest possible computer using Z80. Quite quickly I started thinking of making a replica of ZX Spectrum - the first computer I ever used as a kid. All I wanted was to:
Main components on the Zx2 clock
Zx2 clock bill of materials (BOM)
24 components, 17 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74HC14 | DIP-14_W7.62mm | U1 |
| 1 | 74HC74 | DIP-14_W7.62mm | U3 |
| 2 | CD4060 | DIP-16_W7.62mm | U4, U5 |
| 1 | 3.6768MHz | Crystal_SMD_HC49-SD | Y1 |
| 1 | CONN_AUX | PinHeader_1x06_P2.54mm_Horizontal | J1 |
| 1 | SW_MEC_5G | SW_SPST_EVQPE1 | SW1 |
| 1 | D | C_0805_2012Metric | D1 |
| 2 | LED | C_0805_2012Metric | D2, D3 |
| 2 | 22p | C_0603_1608Metric | C1, C2 |
| 1 | CP | C_1210_3225Metric | C3 |
| 1 | 50u | CP_Elec_5x3 | C4 |
| 1 | 1M | C_0805_2012Metric | R1 |
| 1 | R | C_0805_2012Metric | R2 |
| 1 | 100k | C_0805_2012Metric | R3 |
| 2 | 2.2k | C_0805_2012Metric | R4, R5 |
| 4 | 0R | R_1206_3216Metric | R6, R7, R8, R9 |
| 1 | 0R | C_0805_2012Metric | R10 |
Zx2 clock design files
The KiCad project lives in the krzys9876/ZX_Spectrum_diy repository on GitHub; these links point at the commit this page was built from.
Zx2 clock: common questions
How big is the Zx2 clock PCB?
The Zx2 clock measures 53.3 × 63.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Zx2 clock?
24 components, from 17 distinct parts. The full bill of materials is listed on this page.
Where can I download the Zx2 clock design files?
From the krzys9876/ZX_Spectrum_diy repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Zx2 clock design in my own project?
Yes, under the terms of its MIT license, which krzys9876 chose for the repository.
More boards in ZX_Spectrum_diy
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Zx2 mem
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Zx2 cpu test01
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Zx2 fpga int
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Zx2 backplane
152.4 × 116.8 mm12 parts2LMIT2
Zx2 keyb conn
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