2 layers30 × 61.3 mm
2 layers170.2 × 243.8 mm
Mb486sr
skiselev/sandy_river_48682Open-source 486 ATX Motherboard
- Size
- 170.2 × 243.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 45
- Nets
- 368
- Pads
- 885
- Tracks, vias
- 2,102, 8
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 5 Oct 2022
- Updated
- 7 Jun 2023
Overview
Mb486sr is an open-source printed circuit board by skiselev, from the skiselev/sandy_river_486 repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 170.2 × 243.8 mm with 45 parts on 368 nets, routed with 2,102 tracks and 8 vias.
Its parts include 18 capacitors, 9 connectors, 2 switches, 1 resistor and 1 IC.
README
README.mdsandy_river_486
Open-source 486 ATX Motherboard
Status Updates
- 2022-10-05
- Version 0.1 - Initial schematic
- 2022-10-06
- Version 0.2 - Updated cache schematic
- 2022-10-13
- Version 0.3 - Updated DRAM schematic, pull-ups/pull-downs, CPU configuration jumpers
- 2022-11-01
- Version 0.4 - Updated chipset schematic
- 2023-02-23
- Version 0.5 - More schematic updates. Remove old KiCad files
Parts
45| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | 10uF | Cap_Tant_504 | C16, C17, C18, C19, C20, C21, C22, C23, C24, C31, C32, C33, C39, C40, C41, C47 +2 |
| 9 | CONN_1 | Hole_4mm | HOLE1, HOLE2, HOLE3, HOLE4, HOLE5, HOLE6, HOLE7, HOLE8, HOLE9 |
| 4 | BUSAT_HOST | My_Components:Conn_Edge_ISA16 | BUS1, BUS2, BUS3, BUS4 |
| 2 | Conn_SIMM72 | My_Components:Conn_SIMM72 | J301, J302 |
| 2 | RESET | PIN_ARRAY_2X1 | P2, P6 |
| 1 | 470 | Res_762 | R10 |
| 1 | CLKMUL | My_Components:Conn_Pin_Header_2x1_2.54mm | JP1 |
| 1 | Intel_P24T | My_Components:IC_PGA_SOCKET3 | U1 |
| 1 | POWER | Conn_Power_ATX_20pin | P3 |
| 1 | POWER | SW_Tact_6mm | SW1 |
| 1 | POWER_LED | PIN_ARRAY_2X1 | P7 |
| 1 | POWER_SW | PIN_ARRAY_2X1 | P1 |
| 1 | RESET | SW_Tact_6mm | SW2 |
| 1 | SERIAL | DB9M | P5 |
| 1 | SERIAL | PIN_ARRAY_5x2 | P4 |
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Questions
How big is the Mb486sr PCB?
It measures 170.2 × 243.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Mb486sr use?
45 parts. 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 Mb486sr KiCad files?
From the skiselev/sandy_river_486 repository on GitHub, at the commit this page was made from: the board is KiCad/mb486sr.kicad_pcb and its schematic KiCad/Audio.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Mb486sr design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).