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BE6502 SBC

tebl·BE6502-Build-a-65c02-computer·BE6502 SBC/BE6502 SBC.kicad_pcb

BE6502 SBC PCB layout, top view — open source board by tebl

About the BE6502 SBC PCB

BE6502 SBC is an open source PCB design by tebl, published on GitHub under the CERN-OHL-1.2 license. It is a 2-layer board measuring 99.1 × 99.1 mm, with 61 components from 30 distinct parts.

Other key parts include the W65C02, HM62256BLP-7, 28C256, WD65C22 and 74HC00. By type, the board carries 21 resistors, 8 diodes, 7 ICs, 7 capacitors, 6 switches and 4 modules.

It belongs with the retro computing and dev boards & breakouts designs in this gallery.

From the project

A PCB being made while watching Ben Eaters "Build a 6502 computer" video series. Includes the computer itself, a standalone slow clock and an Arduino Mega shield for the bus monitor sketch..

The picture above shows an assembled and currently running version of the SBC-module (without LCD attached), here I used a female pin header so that the clock module could be slotted directly into place alongside it. I did however change this to use dupont-cables later, this was because the boards separated too easily without having a plate to screw everything into at the moment

BE6502 SBC, from the project README
From the project README

Main components on the BE6502 SBC

W65C02HM62256BLP-728C256WD65C2274HC00RC1602ALM555

BE6502 SBC bill of materials (BOM)

61 components, 30 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
W65C02
U1
1
HM62256BLP-7
U2
1
28C256
U3
1
WD65C22
U4
1
74HC00
U5
1
RC1602A
U6
1
LM555
U7
4
Mounting
M1, M2, M3, M4
1
1MHz
X1
1
Expansion
J1
1
CLOCK_SEL
J2
1
BARREL_JACK
J3
1
Control
J4
1
LED_EN
JP1
1
LCD_EN
JP2
1
10k
RV1
1
RESET
SW1
1
MIDDLE
SW2
1
UP
SW3
1
DOWN
SW4
Show 10 more
QtyPartRefs
1
LEFT
SW5
1
RIGHT
SW6
8
LED
D1, D2, D3, D4, D5, D6, D7, D8
6
100nF
C1, C2, C3, C4, C5, C7
1
220nF
C6
2
3k3
R1, R2
2
3.3k
R3, R18
7
1k
R4, R5, R6, R7, R8, R9, R21
9
220
R10, R11, R12, R13, R14, R15, R16, R17 +1
1
47k
R20

BE6502 SBC design files

The KiCad project lives in the tebl/BE6502-Build-a-65c02-computer repository on GitHub; these links point at the commit this page was built from.

BE6502 SBC: common questions

How big is the BE6502 SBC PCB?

The BE6502 SBC measures 99.1 × 99.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the BE6502 SBC?

61 components, from 30 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the BE6502 SBC design files?

From the tebl/BE6502-Build-a-65c02-computer repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the BE6502 SBC design in my own project?

Yes, under the terms of its CERN-OHL-1.2 license, which tebl chose for the repository.

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