HardLabs

Akira board

MeltedIceCubes·Akira_Ball

Akira board layout, top view — open source AVR/Arduino board by MeltedIceCubes

About the Akira board

Akira board is an open source AVR/Arduino PCB design by MeltedIceCubes, published on GitHub. It is a 2-layer board measuring 110 × 94 mm, with 61 components from 34 distinct parts.

Its main chip is the ATMEGA32U4-AU, from the AVR/Arduino family. Other key parts include the SRV05-4. By type, the board carries 21 resistors, 11 capacitors, 4 speakers, 2 ICs, 2 diodes and 1 crystal.

From the project

Trackball Inspired by Akira's explosion

- 2025/03/06 - Lock down a basic functioning design.

- Sheet metal manufacturing? - CNC Aluminum?

Main components on the Akira board

SRV05-4ATMEGA32U4-AU

Akira board bill of materials (BOM)

61 components, 34 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
SRV05-4
SW
U1
1
ATMEGA32U4-AU
SW
U2
1
Crystal_GND24
Y2
1
ATMEGA328P-PU-ND
ATMEGA328P1
5
D_Small
D_I_1, D_I_2, D_I_3, D_I_4, D_I_5
1
500MA
Polyfuse
F1
2
—
H8, H9
1
AVR-ISP-6
ISP1
1
Volume_Knob
KNOB1
4
SN74LVC1T45DCK
LS1, LS2, LS3, LS4
1
~
PMW3360
1
Rotary_Encoder
SCROLL_RING1
4
Kailh_MicroSwitch
SW_M_1_1, SW_M_1_2, SW_M_2_1, SW_M_2_2
1
USB_C_Receptacle_USB2.0
USB1
1
TPS73601DBV
VR1
1
~
OLED1
2
1N4148
3.6V
D1, D2
2
0.1U
12p
C1, C2
1
10U
100nF
C4
1
22P
100nF
C5
Show 14 more
QtyPartRefs
4
100nF
C6, C8, C9, C11
1
22P
1uF
C7
2
4.7uF
C10, C12
4
10K
R1, R1_6, R1_8, R6
2
5.1k
R1_1, R1_2
2
47R
R1_3, R1_4
1
1.5k
R1_5
1
33R
R1_7
3
2R
R1_9, R1_10, R1_11
2
20R
R1_12, R1_13
2
7.5K
R2, R5
2
4.7K
R2_1, R2_2
1
10K
30K
R3
1
10K
56K
R4

Akira board design files

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

Akira board: common questions

What microcontroller does the Akira board use?

The Akira board is built around the ATMEGA32U4-AU, from the AVR/Arduino family.

How big is the Akira board?

The Akira board measures 110 × 94 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Akira board?

61 components, from 34 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Akira board design files?

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

Can I use the Akira board design in my own project?

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

Can I test firmware for the Akira board 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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