HardLabs

Alpha34-keyboard

bathoorn·alpha34-keyboard·pcb/alpha34.kicad_pcb

Alpha34-keyboard PCB layout, top view — open source AVR/Arduino board by bathoorn

About the Alpha34-keyboard PCB

Alpha34-keyboard is an open source AVR/Arduino PCB design by bathoorn, published on GitHub. It is a 2-layer board measuring 233.4 × 57.2 mm, with 84 components from 13 distinct parts.

Its main chip is the ATmega32U4-AU, from the AVR/Arduino family. By type, the board carries 35 switches, 34 diodes, 7 capacitors, 4 resistors, 1 IC and 1 crystal.

It belongs with the keyboards designs in this gallery.

From the project

kicad alpha34 keyboard project

Main components on the Alpha34-keyboard

ATmega32U4-AU

Alpha34-keyboard bill of materials (BOM)

84 components, 13 distinct parts.

QtyPartRefs
1
ATmega32U4-AU
U1
1
16MHz
Y1
1
500mA
F1
1
SW_Push
SW20
34
SW_PUSH
SW101, SW102, SW103, SW104, SW105, SW106, SW107, SW108 +26
1
Molex-0548190589
USB1
34
D
D1, D2, D3, D4, D5, D6, D7, D8 +26
2
22pF
C1, C2
1
1uF
C3
3
0.1uF
C4, C5, C6
1
10uF
C7
2
10k
R1, R4
2
22
R2, R3

Alpha34-keyboard design files

The KiCad project lives in the bathoorn/alpha34-keyboard repository on GitHub; these links point at the commit this page was built from.

Alpha34-keyboard: common questions

What microcontroller does the Alpha34-keyboard use?

The Alpha34-keyboard is built around the ATmega32U4-AU, from the AVR/Arduino family.

How big is the Alpha34-keyboard PCB?

The Alpha34-keyboard measures 233.4 × 57.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Alpha34-keyboard?

84 components, from 13 distinct parts. The full bill of materials is listed on this page.

Where can I download the Alpha34-keyboard design files?

From the bathoorn/alpha34-keyboard repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Alpha34-keyboard design in my own project?

The repository has no license, so all rights stay with bathoorn. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Alpha34-keyboard 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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