HardLabs

Plain60-b

evyd13·plain60-b

Plain60-b PCB layout, top view — open source AVR/Arduino board by evyd13

About the Plain60-b PCB

Plain60-b is an open source AVR/Arduino PCB design by evyd13, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 284.7 × 94.2 mm, with 173 components from 31 distinct parts.

Its main chip is the ATmega32U4, from the AVR/Arduino family. Other key parts include the USBLC6-2SC6. By type, the board carries 77 relays, 65 diodes, 9 switches, 8 capacitors, 4 resistors and 2 ICs.

From the project

Universally compatible 60% PCB with minimal layout support and Mini USB

It also features a fuse and an ESD protection chip to protect the MCU and other parts of the PCB.

Plain60-b, from the project README
From the project README

Main components on the Plain60-b

ATmega32U4USBLC6-2SC6

Plain60-b bill of materials (BOM)

173 components, 31 distinct parts.

QtyPartRefs
1
ATmega32U4
U1
1
USBLC6-2SC6
U2
1
XTAL_GND
X1
1
USB_mini_micro_B
J1
1
ISP
J2
1
Polyfuse
F1
1
B7
H1
1
B0
H2
1
GND
H3
1
+5v
H4
53
KEYSW
K1, K2, K3, K4, K5, K6, K7, K8 +45
1
KEYSW
K15
6
KEYSW
K16, K29, K61-1, K63-1, K72-1, K74-1
2
KEYSW
K31, K58-1
9
KEYSW
K31-1, K46-1, K61, K62, K63, K71, K72, K73 +1
2
KEYSW
K44, K46
1
KEYSW
K44-1
1
KEYSW
K58
1
KEYSW
K67
1
KEYSW
K67-1
Show 11 more
QtyPartRefs
4
Screw
S1, S2, S3, S6
2
Screw
S4, S5
2
Tofu screw
S8, S9
1
SW_PUSH
SW1
65
D
D1, D2, D3, D4, D5, D6, D7, D8 +57
2
22p
C1, C2
1
1u
C3
4
0.1u
C4, C5, C6, C7
1
4.7u
C8
2
22
R1, R2
2
10k
R3, R4

Plain60-b design files

The KiCad project lives in the evyd13/plain60-b repository on GitHub; these links point at the commit this page was built from.

Plain60-b: common questions

What microcontroller does the Plain60-b use?

The Plain60-b is built around the ATmega32U4, from the AVR/Arduino family.

How big is the Plain60-b PCB?

The Plain60-b measures 284.7 × 94.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Plain60-b?

173 components, from 31 distinct parts. The full bill of materials is listed on this page.

Where can I download the Plain60-b design files?

From the evyd13/plain60-b repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Plain60-b design in my own project?

Yes, under the terms of its CC-BY-SA-4.0 license, which evyd13 chose for the repository.

Can I test firmware for the Plain60-b without the hardware?

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

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