HardLabs

Ortho Allison

kajahtaa·Ortho_Allison

Ortho Allison PCB layout, top view — open source AVR/Arduino board by kajahtaa

About the Ortho Allison PCB

Ortho Allison is an open source AVR/Arduino PCB design by kajahtaa, published on GitHub. It is a 2-layer board measuring 319.7 × 129.2 mm, with 186 components from 14 distinct parts.

Its main chip is the ATmega32U4-A, from the AVR/Arduino family. Other key parts include the TPD2S017. By type, the board carries 85 switches, 85 diodes, 8 capacitors, 4 resistors, 2 ICs and 1 crystal.

Main components on the Ortho Allison

ATmega32U4-ATPD2S017

Ortho Allison bill of materials (BOM)

186 components, 14 distinct parts.

QtyPartRefs
1
ATmega32U4-A
U1
1
TPD2S017
U2
1
Crystal_GND24
Y1
1
USB_C_Receptacle_USB2.0
J1
79
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +71
4
SW_Push
SW77, SW78, SW84, SW85
2
SW_Push
SW80, SW82
85
D
D1, D2, D3, D4, D5, D6, D7, D8 +77
2
22p
C1, C2
4
0.1u
C3, C4, C5, C6
1
4.7u
C7
1
1u
C8
2
22
R1, R2
2
10k
R3, R4

Ortho Allison design files

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

Ortho Allison: common questions

What microcontroller does the Ortho Allison use?

The Ortho Allison is built around the ATmega32U4-A, from the AVR/Arduino family.

How big is the Ortho Allison PCB?

The Ortho Allison measures 319.7 × 129.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Ortho Allison?

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

Where can I download the Ortho Allison design files?

From the kajahtaa/Ortho_Allison repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Ortho Allison design in my own project?

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

Can I test firmware for the Ortho Allison 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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