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Uno

fortytwosystems·Uno

Uno PCB layout, top view — open source Microchip SAM board by fortytwosystems
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About the Uno PCB

Uno is an open source Microchip SAM PCB design by fortytwosystems, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 68.5 × 53.3 mm, with 66 components from 39 distinct parts.

Its main chip is the ATSAMC21G18A, from the Microchip SAM family. Other key parts include the LMV358, USBLC6-2SC6, FT231XQ, NCP1117-5.0 and LP2985-3.3. By type, the board carries 26 capacitors, 13 resistors, 9 connectors, 6 ICs, 5 diodes and 2 transistors.

From the project

Arduino Uno replacement based on Microchip SAMC21

Main components on the Uno

ATSAMC21G18ALMV358USBLC6-2SC6FT231XQNCP1117-5.0LP2985-3.3

Uno bill of materials (BOM)

66 components, 39 distinct parts.

QtyPartRefs
1
ATSAMC21G18A
U1
1
LMV358
U2
1
USBLC6-2SC6
U3
1
FT231XQ
U4
1
NCP1117-5.0
U5
1
LP2985-3.3
U6
1
2N7002
Q1
1
DMP3098L
Q2
1
32.768kHz
Y1
1
JTAG
J1
1
POWER
J2
1
ANALOG
J3
1
ICSP
J4
1
Conn_01x08
J5
1
DIGITAL-HIGH
J6
1
DIGITAL-LOW
J7
1
USB_B
J8
1
PJ-202A
J9
1
MF-MSMF050-2
F1
1
SW_SPST
SW1
Show 19 more
QtyPartRefs
2
YELLOW
D1, D2
2
YLW
D3, D4
1
M7
D5
1
470r
FB1
1
BLM18PG471SN1
470r
FB2
2
15pF
C1, C2
1
100pF
C3
2
10uF
C4, C12
1
1uF
C5
13
0.1uF
C6, C7, C8, C9, C10, C15, C18, C19 +5
1
0.01uF
C13
1
4.7uF
C14
2
47pF
C16, C17
2
47uF
C21, C22
1
2.2uF
C26
3
330r
R1, R8, R9
5
10k
R2, R10, R11, R12, R13
3
1k
R3, R4, R5
2
27r
R6, R7

Uno design files

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

Uno: common questions

What microcontroller does the Uno use?

The Uno is built around the ATSAMC21G18A, from the Microchip SAM family.

How big is the Uno PCB?

The Uno measures 68.5 × 53.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Uno?

66 components, from 39 distinct parts. The full bill of materials is listed on this page.

Where can I download the Uno design files?

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

Can I use the Uno design in my own project?

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

Can I test firmware for the Uno 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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