HardLabs

Miniboard

siderakb·miniboard·rev2/Miniboard.kicad_pcb

Miniboard PCB layout, top view — open source AVR/Arduino board by siderakb

About the Miniboard PCB

Miniboard is an open source AVR/Arduino PCB design by siderakb, published on GitHub under the MIT license. It is a 4-layer board measuring 50 × 18 mm, with 72 components from 14 distinct parts.

Its main chip is the ATmega32U4-M, from the AVR/Arduino family. By type, the board carries 9 capacitors, 7 diodes, 6 resistors, 1 IC, 1 crystal and 1 connector.

It belongs with the keyboards designs in this gallery.

From the project

A super mini keyboard

These files are provided without warranty of any kind. Including but not limited to manufacturing, assembly, procurement and use at your own risk. It is recommended to check yourself before use.

For the full statement, please see LICENSE.

Main components on the Miniboard

ATmega32U4-M

Miniboard bill of materials (BOM)

72 components, 14 distinct parts.

QtyPartRefs
1
ATmega32U4-M
U1
1
16MHz
Y1
1
USB_C_Receptacle_USB2.0
J1
1
500mA, 6V
F1
2
SW_Push_45deg
KEY1, KEY2
42
SW_Push_45deg
KEY3, KEY4, KEY5, KEY6, KEY7, KEY8, KEY9, KEY10 +34
1
RESET
SW1
1
Blue
LD1
7
1N4148
D1, D2, D3, D4, D5, D6, D7
3
1uF
C1, C2, C9
4
100nF
C3, C4, C5, C8
2
12pF
C6, C7
4
5.1k
R1, R2, R5, R6
2
22
R3, R4

Miniboard design files

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

Miniboard: common questions

What microcontroller does the Miniboard use?

The Miniboard is built around the ATmega32U4-M, from the AVR/Arduino family.

How big is the Miniboard PCB?

The Miniboard measures 50 × 18 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Miniboard?

72 components, from 14 distinct parts. The full bill of materials is listed on this page.

Where can I download the Miniboard design files?

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

Can I use the Miniboard design in my own project?

Yes, under the terms of its MIT license, which siderakb chose for the repository.

Can I test firmware for the Miniboard 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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