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OSSW - Open Scart Switch - Main

BinaryS010·ossw·pcb/main/prototype/rev-1.1/ossw.kicad_pcb

OSSW - Open Scart Switch - Main PCB layout, top view — open source Microchip SAM board by BinaryS010
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About the OSSW - Open Scart Switch - Main PCB

OSSW - Open Scart Switch - Main is an open source Microchip SAM PCB design by BinaryS010, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 401.6 × 130.1 mm, with 310 components from 73 distinct parts.

Its main chip is the ATSAMD21J18A-AUT, from the Microchip SAM family. Other key parts include the SN74CBT3244, IR RECV, 74HC14, NCP1117ST33T3G and THS7374. By type, the board carries 101 diodes, 88 resistors, 60 capacitors, 20 connectors, 18 ICs and 13 transistors.

It belongs with the audio and displays & leds designs in this gallery.

From the project

Open SCART Switch

The Open SCART Switch (OSSW) is an RGB video and audio SCART switch designed to connect up to 8 RGB capable video game consoles with compatible display devices or scalers such as the Open Source Scan Converter (OSSC).

It was designed for use with properly constructed RGB SCART cables which correctly attenuate video and sync signals to levels safe for use with consumer grade televisions and the OSSC.

Main components on the OSSW - Open Scart Switch - Main

SN74CBT3244ATSAMD21J18A-AUTIR RECV74HC14NCP1117ST33T3GTHS7374NCP1117ST50T3G24LC64TS5A3159DCKLM1881

OSSW - Open Scart Switch - Main bill of materials (BOM)

310 components, 73 distinct parts.

QtyPartRefs
8
SN74CBT3244
U1, U2, U10, U11, U12, U13, U14, U15
1
ATSAMD21J18A-AUT
U3
1
IR RECV
U4
1
74HC14
U5
1
NCP1117ST33T3G
U6
1
THS7374
U7
1
NCP1117ST50T3G
U8
1
24LC64
U9
2
TS5A3159DCK
U16, U18
1
LM1881
U17
1
BC847
Q1
1
BC857
Q2
10
BSS138
Q3, Q4, Q5, Q7, Q8, Q9, Q10, Q11 +2
1
SI2399
Q6
1
32.768kHz
Y1
1
IN 1
J1
1
IN 3
J2
1
IN 2
J3
1
IN 4
J4
1
OUT 1
J5
Show 53 more
QtyPartRefs
1
SD_CARD
J6
1
IN 5
J7
1
IN 6
J8
1
IN 7
J9
1
SWD
J10
1
LCD
J11
1
Audio Out
J12
1
DC 7.5V
J13
1
OUT 2
J14
1
IN 8
J15
1
A1
J16
1
A2
J17
1
A3
J18
1
A4
J19
1
EXT
J20
1
1A
F1
1
RESET
SW1
1
UP
SW2
1
LEFT
SW3
1
ACTION
SW4
1
DOWN
SW5
1
RIGHT
SW6
1
SW_SPST
SW7
16
LED_Small
D1, D2, D3, D4, D52, D53, D62, D63 +8
2
1N4002
D5, D7
1
10V
D6
1
3V3
D8
1
5V
D9
80
D_TVS
D10, D11, D12, D13, D14, D15, D16, D17 +72
1
BLM21PG331SN1
FB1
34
0.1uF
C1, C2, C7, C8, C9, C10, C12, C13 +26
2
6.4pF
C3, C4
4
10uF
C5, C21, C23, C25
2
10uF
C6, C60
1
1uF
C11
1
100pF
C14
1
15nF/50V
C22
1
47uF
C24
6
100nF
C27, C28, C29, C30, C54, C55
8
220uF
C32, C33, C34, C35, C36, C37, C38, C39
16
220R
R1, R2, R3, R4, R60, R61, R62, R63 +8
2
4K7
R5, R6
37
10K
R7, R8, R11, R12, R13, R14, R19, R20 +29
3
1K
R9, R10, R17
5
2K2
R15, R79, R80, R81, R82
1
330R
R16
1
39R
R18
1
12K
R29
1
150R
R30
14
75R
R32, R34, R35, R36, R37, R42, R43, R44 +6
5
5.6M
R38, R39, R40, R41, R74
1
680K
R75
1
470R
R76

OSSW - Open Scart Switch - Main design files

The KiCad project lives in the BinaryS010/ossw repository on GitHub; these links point at the commit this page was built from.

OSSW - Open Scart Switch - Main: common questions

What microcontroller does the OSSW - Open Scart Switch - Main use?

The OSSW - Open Scart Switch - Main is built around the ATSAMD21J18A-AUT, from the Microchip SAM family.

How big is the OSSW - Open Scart Switch - Main PCB?

The OSSW - Open Scart Switch - Main measures 401.6 × 130.1 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the OSSW - Open Scart Switch - Main?

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

Where can I download the OSSW - Open Scart Switch - Main design files?

From the BinaryS010/ossw repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the OSSW - Open Scart Switch - Main design in my own project?

Yes, under the terms of its GPL-3.0 license, which BinaryS010 chose for the repository.

Can I test firmware for the OSSW - Open Scart Switch - Main without the hardware?

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

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