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All in one smc

nojan1·project-wrass·eda/all-in-one-smc/all-in-one-smc.kicad_pcb

All in one smc PCB layout, top view — open source RP2040/RP2350 board by nojan1

About the All in one smc PCB

All in one smc is an open source RP2040/RP2350 PCB design by nojan1, published on GitHub. It is a 4-layer board measuring 161.1 × 82.9 mm, with 146 components from 73 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the W65C02SxP, 4072, 74HCT32, ATF16V8Bxx-xxPU and 74HCT139. By type, the board carries 47 capacitors, 38 resistors, 30 ICs, 14 connectors, 5 transistors and 4 crystals.

From the project

The purpose of Project Wrass is to develop the Wrass 1.

The purpose of Project Wrass is to develop the Wrass 1.

A 6502 based computer having the following specs.

W65C02 running at 2Mhz Bankable RAM giving a total of approx 300KB of usable memory * Expansion bus for up to 16 devices

The 16KB ROM is bankable using an external switch. This allows the computer to run "2 sets" of software.

The existing one is a simple homebrew "monitor" giving access to simple read, write and jump commands.

All in one smc, from the project README
From the project README

Main components on the All in one smc

W65C02SxP407274HCT32ATF16V8Bxx-xxPU74HCT13974HCT00NA555P74HCT27374LHCT15728C256AS6C4008-55PCN74HCT138W65C51NxQCH340KW25Q128JVSW65C22SxPRP2040SN74LVC245APW74HCT1474HCT8674HCT59574HCT165LM317LDS1306

All in one smc bill of materials (BOM)

146 components, 73 distinct parts.

QtyPartRefs
1
W65C02SxP
U1
1
4072
U2
1
74HCT32
U3
1
ATF16V8Bxx-xxPU
U4
1
74HCT139
U5
1
74HCT00
U6
1
NA555P
U7
1
74HCT273
U8
2
74LHCT157
U9, U10
1
28C256
U11
1
AS6C4008-55PCN
U12
2
74HCT138
U13, U31
1
W65C51NxQ
U14
1
CH340K
U15
1
W25Q128JVS
U16
2
W65C22SxP
U18, U20
1
RP2040
U19
2
SN74LVC245APW
U21, U22
1
74HCT14
U23
1
74HCT86
U24
Show 53 more
QtyPartRefs
3
74HCT595
U26, U29, U30
1
74HCT165
U27
1
LM317L
U32
1
DS1306
U100
5
2N7002
Q1, Q2, Q3, Q4, Q5
1
4Mhz
X1
1
1.8432Mhz
Y1
1
ABM8-272-T3
Y2
1
32.768kHz
Y3
1
Audio out
J1
1
PWR_Switch
J2
1
$1-3 latch
J3
1
ResetSwitch
J4
1
RomHighSel
J5
1
Expansion
J6
1
ProgrammingConnector
J7
1
USB_C PWR
J8
1
VIA Breakout
J9
1
PS2
J10
1
SD-Card module
J11
1
CS_Invert_Selection
J13
1
HDMI_A
J14
1
USB_C Serial
J15
1
CR2032
BT1
1
Enable PS2 Output
JP2
1
SD-Card voltage select
JP6
1
BOOT
SW1
1
RST
SW2
1
LED
D1
1
1N4007
D2
1
1N457
D3
25
100n
C1, C3, C4, C5, C6, C7, C8, C11 +17
1
3u
C2
1
10n
C9
1
10u
C10
1
1u
C18
1
20pf
C19
12
100nf
C23, C27, C30, C36, C37, C38, C39, C40 +4
2
15p
C24, C25
1
100nf
C45
2
6pf
C46, C47
2
1k
R1, R4
1
1M
R2
22
10k
R3, R6, R7, R8, R9, R10, R13, R14 +14
1
47k
R5
2
27.4
R11, R12
1
270
R16
2
5.1k
R17, R18
3
2k2
R25, R26, R43
1
33k
R29
1
370R
R38
1
220R
R39
1
270
RN1

All in one smc design files

The KiCad project lives in the nojan1/project-wrass repository on GitHub; these links point at the commit this page was built from.

All in one smc: common questions

What microcontroller does the All in one smc use?

The All in one smc is built around the RP2040, from the RP2040/RP2350 family.

How big is the All in one smc PCB?

The All in one smc measures 161.1 × 82.9 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the All in one smc?

146 components, from 73 distinct parts. The full bill of materials is listed on this page.

Where can I download the All in one smc design files?

From the nojan1/project-wrass repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the All in one smc design in my own project?

The repository has no license, so all rights stay with nojan1. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the All in one smc without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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