HardLabs

Spi

atarola·compy6502·kicad/spi/spi.kicad_pcb

Spi PCB layout, top view — open source board by atarola

About the Spi PCB

Spi is an open source PCB design by atarola, published on GitHub. It is a 2-layer board measuring 102.5 × 44.8 mm, with 20 components from 12 distinct parts.

Other key parts include the TinyFPGA w/SPI Module, TSR1-2433E, SN74LVC8T245PWR and FM25V05-G. By type, the board carries 8 capacitors, 5 ICs, 5 connectors and 2 resistors.

It belongs with the retro computing designs in this gallery.

From the project

Code for my 6502 build

compy6502 is an early-stage 6502 homebrew computer project. The long-term goal is to build enough hardware and firmware to run Tetris on the machine.

The design follows the spirit of Ben Eater-style breadboard/modular 6502 systems for simplicity and debuggability, but uses a different memory map based on the MMU/address-decoder architecture in docs/mmu.png.

The repo currently includes KiCad hardware designs, early ROM bring-up firmware, build/write scripts, emulator test scaffolding, and architecture reference images in docs/.

Main components on the Spi

TinyFPGA w/SPI ModuleTSR1-2433ESN74LVC8T245PWRFM25V05-G

Spi bill of materials (BOM)

20 components, 12 distinct parts.

QtyPartRefs
1
TinyFPGA w/SPI Module
U1
1
TSR1-2433E
U2
2
SN74LVC8T245PWR
U3, U4
1
FM25V05-G
U5
1
Board Connector
J1
1
IO Select
J3
1
SPI 1
J6
1
SPI 2
J7
1
SPI 3
J8
2
10u
C1, C2
6
100n
C3, C4, C5, C6, C7, C8
2
33
R1, R2

Spi design files

The KiCad project lives in the atarola/compy6502 repository on GitHub; these links point at the commit this page was built from.

Spi: common questions

How big is the Spi PCB?

The Spi measures 102.5 × 44.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Spi?

20 components, from 12 distinct parts. The full bill of materials is listed on this page.

Where can I download the Spi design files?

From the atarola/compy6502 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Spi design in my own project?

The repository has no license, so all rights stay with atarola. Use it as a reference, and ask the author before reusing the design.

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