4 layers304.5 × 217.2 mm
Latest Full Backplane
Trilobyte-CPU/8-bit-computer
A DIY 8-bit computer built mostly with discrete logic chips
478 parts2
2 layers97.8 × 18.8 mm
A DIY 8-bit computer built mostly with discrete logic chips
- Size
- 97.8 × 18.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 20
- Nets
- 41
- Pads
- 134
- Tracks, vias
- 12, 3
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 20 Apr 2021
- Updated
- 9 Nov 2022
Overview
VGA is an open-source printed circuit board by Trilobyte-CPU, from the Trilobyte-CPU/8-bit-computer repository on GitHub. It is a 2-layer board of 97.8 × 18.8 mm with 20 parts on 41 nets, routed with 12 tracks and 3 vias.
It is built around the 74LS85DC. Its parts include 3 capacitors, 3 resistors, 3 ICs, 3 diodes and 3 connectors.
Main components
1Parts
20| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 74LS85 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U4, U5, U6 |
| 3 | C | Capacitor_SMD:C_0805_2012Metric | C11, C12, C13 |
| 3 | LED | LED_SMD:LED_0805_2012Metric | D4, D5, D6 |
| 3 | R_Pack04 | Resistor_SMD:R_Array_Convex_4x0603 | RN4, RN5, RN6 |
| 3 | R_US | Resistor_SMD:R_0805_2012Metric | R4, R5, R6 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J29 |
| 1 | Conn_01x05 | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J8 |
| 1 | Conn_01x12 | Connector_PinHeader_2.54mm:PinHeader_1x12_P2.54mm_Vertical | J7 |
| 1 | SW_DIP_x12 | Button_Switch_THT:SW_DIP_SPSTx12_Slide_9.78x32.66mm_W7.62mm_P2.54mm | SW2 |
The 19 most common of 20 parts.
Questions
How big is the VGA PCB?
It measures 97.8 × 18.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the VGA use?
20 parts, built around the 74LS85DC. 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 VGA KiCad files?
From the Trilobyte-CPU/8-bit-computer repository on GitHub, at the commit this page was made from: the board is PCBs/99_IN PROGRESS/IO-VGA-counter/VGA-backups/VGA-2022-07-05_010742/VGA.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the VGA design in my own project?
Its repository states no licence, so its author keeps all rights: ask Trilobyte-CPU before reusing the design.
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