HardLabs

Mega

fortytwosystems·Mega

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

Mega 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 101.5 × 53.3 mm, with 73 components from 42 distinct parts.

Its main chip is the ATSAMC21N, 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 29 capacitors, 13 resistors, 12 connectors, 6 ICs, 5 diodes and 2 transistors.

From the project

Arduino Mega replacement based on Microchip SAMC21

Main components on the Mega

ATSAMC21NLMV358USBLC6-2SC6FT231XQNCP1117-5.0LP2985-3.3

Mega bill of materials (BOM)

73 components, 42 distinct parts.

QtyPartRefs
1
ATSAMC21N
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
EXTRA
J3
1
ICSP
J4
1
ANALOG-LOW
J5
1
DIGITAL-MID
J6
2
DIGITAL-LOW
J7, J12
1
USB_B
J8
1
PJ-202A
J9
1
ANALOG-HIGH
J10
1
Conn_02x18_Odd_Even
J11
Show 22 more
QtyPartRefs
1
MF-MSMF050-2
F1
1
RESET-EN
JP1
1
SW_SPST
SW1
2
YELLOW
D1, D2
2
YLW
D3, D4
1
M7
D5
1
470r
FB1
1
BLM18PG471SN1
470r
FB2
2
15pF
C2, C4
1
100pF
C3
16
0.1uF
C5, C6, C7, C9, C10, C11, C15, C18 +8
2
10uF
C8, C29
1
0.01uF
C13
1
4.7uF
C14
2
47pF
C16, C17
2
47uF
C21, C22
1
2.2uF
C26
1
1uF
C31
3
330r
R1, R8, R9
5
10k
R2, R10, R11, R12, R13
3
1k
R3, R4, R5
2
27r
R6, R7

Mega design files

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

Mega: common questions

What microcontroller does the Mega use?

The Mega is built around the ATSAMC21N, from the Microchip SAM family.

How big is the Mega PCB?

The Mega measures 101.5 × 53.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Mega?

73 components, from 42 distinct parts. The full bill of materials is listed on this page.

Where can I download the Mega design files?

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

Can I use the Mega 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 Mega 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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