2 layers285 × 222.5 mm
Polykit x mainboard
polykit/polykit-x-mainboard
Schematics and PCB layout for a mainboard for an 8 voice polyphonic synthesizer
220 parts22
2 layers164.7 × 58.4 mm
DISAppointment
rasteri/dISAppointment241Adding ISA slots to modern motherboards
- Size
- 164.7 × 58.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 71
- Nets
- 147
- Pads
- 505
- Tracks, vias
- 2,215, 162
- Pours
- 6
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 19 Mar 2023
- Updated
- 30 Jan 2025
Overview
DISAppointment is an open-source printed circuit board by rasteri, from the rasteri/dISAppointment repository on GitHub, published under the CC-BY-SA-4.0 licence. It is a 2-layer board of 164.7 × 58.4 mm with 71 parts on 147 nets, routed with 2,215 tracks and 162 vias.
It is built around the L7905. Its parts include 17 resistors, 13 capacitors, 5 diodes, 4 connectors and 4 fuses.
Main components
1README
README.mddISAppointment
Adding ISA slots to modern motherboards
Parts
71| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | 8.2K | Resistor_SMD:R_Array_Concave_4x0603 | RN1, RN2, RN3, RN4, RN5, RN6, RN7, RN10, RN11, RN12, RN13, RN14, RN15, RN16, RN17, RN18 +2 |
| 10 | 1K | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R2, R11, R12, R13, R14, R15, R17, R18, R19 |
| 8 | 100n | Capacitor_SMD:C_1206_3216Metric | C1, C2, C3, C4, C5, C6, C7, C8 |
| 7 | , , , , , , | ||
| 5 | 10uF | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C15, C16, C17, C18, C19 |
| 5 | 4.7K | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R7, R8, R9, R10, R16 |
| 5 | LED | andy:LED_1206_3216Metric | D1, D2, D3, D4, D5 |
| 4 | 500mA | Fuse:Fuse_1206_3216Metric | F1, F2, F4, F6 |
| 1 | 10K | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R5 |
| 1 | ATX-24 | Connector_Molex:Molex_Mini-Fit_Jr_5566-24A_2x12_P4.20mm_Vertical | J5 |
| 1 | Bus_ISA_16bit | andy:ISA | J1 |
| 1 | DNP | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R6 |
| 1 | F85226AF | andy:QFP-26x38_14x20_Pitch0.5mm | U1 |
| 1 | L7905 | Package_TO_SOT_THT:TO-220-3_Vertical | U2 |
| 1 | LPC | Connector_PinHeader_2.54mm:PinHeader_2x10_P2.54mm_Vertical | J3 |
| 1 | PS_ON | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J2 |
The 70 most common of 71 parts.
Questions
How big is the DISAppointment PCB?
It measures 164.7 × 58.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the DISAppointment use?
71 parts, built around the L7905. 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 DISAppointment KiCad files?
From the rasteri/dISAppointment repository on GitHub, at the commit this page was made from: the board is hardware/disappointment.kicad_pcb and its schematic hardware/disappointment.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the DISAppointment design in my own project?
Its repository publishes it under the CC-BY-SA-4.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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