Zx specdrum re created
About the Zx specdrum re created PCB
Zx specdrum re created is an open source PCB design by zxinfo-diy-electronics, published on GitHub. It is a 2-layer board measuring 76 × 51.4 mm, with 29 components from 20 distinct parts.
Other key parts include the 74LS32 and TL084. By type, the board carries 12 capacitors, 11 resistors, 3 connectors and 2 ICs.
It belongs with the test & measurement and retro computing designs in this gallery.
From the project
Recreated and improved version of Currah Specdrum Interface for ZX Spectrum
Work on this was initiated because existing schema found on the internet is with errors.
The only changes compared with original: PCB made more compact to fit into my ZX-Bus-Extender board, you can use a normal edge connecter if you prefer. Some components moved, all ICs now have the same orientation. Make sure all ICs have decoupling capacitors. Added a 3.5" mini-jack plug for audio out.
Main components on the Zx specdrum re created
Zx specdrum re created bill of materials (BOM)
29 components, 20 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74LS32 | DIP-14_W7.62mm_Socket | U1 |
| 1 | TL084 | DIP-14_W7.62mm_Socket | U2 |
| 1 | ZX_Spectrum_Connector_48K | EDGE_ZX_SPECTRUM | J1 |
| 1 | Audio out | 3.5mm mono jack chassis with switch | J2 |
| 1 | Filter | PinHeader_1x03_P2.54mm_Vertical | J3 |
| 1 | ~ | DIP-16_W7.62mm_Socket | ZN428E1 |
| 3 | 1uF | C_Disc_D4.3mm_W1.9mm_P5.00mm | C1, C2, C9 |
| 1 | 22uF | CP_Radial_D5.0mm_P2.50mm | C3 |
| 1 | 2,7nF | C_Disc_D3.0mm_W1.6mm_P2.50mm | C4 |
| 1 | 2,2nF | C_Disc_D3.0mm_W1.6mm_P2.50mm | C5 |
| 1 | 82pF (NPO) | C_Disc_D4.3mm_W1.9mm_P5.00mm | C6 |
| 1 | 10uF | CP_Radial_D5.0mm_P2.50mm | C7 |
| 1 | 1nF | C_Disc_D3.0mm_W1.6mm_P2.50mm | C8 |
| 3 | 100nF | C_Disc_D3.0mm_W1.6mm_P2.50mm | C10, C11, C12 |
| 1 | 390 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 390K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 2 | 100K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3, R11 |
| 2 | 10K | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4, R5 |
| 4 | 6K2 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6, R7, R8, R9 |
| 1 | 680 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R10 |
Zx specdrum re created design files
The KiCad project lives in the zxinfo-diy-electronics/zx-specdrum-re-created repository on GitHub; these links point at the commit this page was built from.
Zx specdrum re created: common questions
How big is the Zx specdrum re created PCB?
The Zx specdrum re created measures 76 × 51.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Zx specdrum re created?
29 components, from 20 distinct parts. The full bill of materials is listed on this page.
Where can I download the Zx specdrum re created design files?
From the zxinfo-diy-electronics/zx-specdrum-re-created repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Zx specdrum re created design in my own project?
The repository has no license, so all rights stay with zxinfo-diy-electronics. Use it as a reference, and ask the author before reusing the design.
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