2 layers84.3 × 56.6 mm
HDC
spodula/Spec-IDE-Interface
Buffered and Unbuffered 8 bit IDE interfaces for the zx Spectrum.
19 parts1
2 layers84.3 × 56.6 mm
Buffered and Unbuffered 8 bit IDE interfaces for the zx Spectrum.
- Size
- 84.3 × 56.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 17
- Nets
- 78
- Pads
- 133
- Tracks, vias
- 380, 87
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 13 Nov 2022
- Updated
- 13 Nov 2022
Overview
HDC is an open-source printed circuit board by spodula, from the spodula/Spec-IDE-Interface repository on GitHub. It is a 2-layer board of 84.3 × 56.6 mm with 17 parts on 78 nets, routed with 380 tracks and 87 vias.
It is built around the 74LS10PC and BC327. Its parts include 5 connectors, 4 resistors, 2 diodes, 1 capacitor and 1 IC. It belongs with the retro computing and games and interfaces and adapters boards of this library.
Main components
2README
README.mdSpec-IDE-Interface
Buffered and Unbuffered 8 bit IDE interfaces for the zx Spectrum.
This is a (Another) remake of the Pera Putnik/Gary Lancaster design for a simple 8-bit IDE interface for the zx Spectrum.
There are two versions of this, and unbuffered version which is basically the same as the PP/GL design except with additional HDD and Power LED pins.
The Buffered one buffers all the lines going to the Hard drive, which should make the interface more reliable for longer cable lengths.
Parts
17| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 330 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2, R3, R4 |
| 2 | MountingHole_Pad | MountingHole:MountingHole_3.5mm | H2, H3 |
| 1 | 100k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 47nf | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C1 |
| 1 | 74LS10 | Package_DIP:DIP-14_W7.62mm_LongPads | U3 |
| 1 | BC327 | Package_TO_SOT_THT:TO-92_Inline | Q1 |
| 1 | DOM_POWER_ENABLE | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal | J5 |
| 1 | HDD_LED | LED_THT:LED_D5.0mm | D1 |
| 1 | HDD_LED | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal | J2 |
| 1 | LOGO | bitmaps:kicad_bitmap | G*** |
| 1 | PATA_40 | Connector_PinHeader_2.54mm:PinHeader_2x20_P2.54mm_Vertical | J4 |
| 1 | POWER | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal | J3 |
| 1 | PWR_LED | LED_THT:LED_D5.0mm | D2 |
| 1 | Spectrum 128/Grey +2 edge connector | Spectrum:Speccy_edge_External | J1 |
Questions
How big is the HDC PCB?
It measures 84.3 × 56.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the HDC use?
17 parts, built around the 74LS10PC and BC327. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the HDC KiCad files?
From the spodula/Spec-IDE-Interface repository on GitHub, at the commit this page was made from: the board is Unbuffered/HDC.kicad_pcb and its schematic Buffered/HDC.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the HDC design in my own project?
Its repository states no licence, so its author keeps all rights: ask spodula before reusing the design.
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