HardLabs

Bakers dozen

MaxScame·Bakers-dozen·PCB/Bakers-dozen.kicad_pcb

Bakers dozen PCB layout, top view — open source AVR/Arduino board by MaxScame

About the Bakers dozen PCB

Bakers dozen is an open source AVR/Arduino PCB design by MaxScame, published on GitHub under the MIT license. It is a 2-layer board measuring 247.7 × 82.6 mm, with 114 components from 15 distinct parts.

Its main chip is the ATmega32U4-AU, from the AVR/Arduino family. By type, the board carries 49 LEDs, 49 diodes, 7 capacitors, 4 resistors, 1 IC and 1 crystal.

It belongs with the keyboards designs in this gallery.

From the project

🚧40% ortholinear keyboard🚧

Bakers dozen, from the project README
From the project README

Main components on the Bakers dozen

ATmega32U4-AU

Bakers dozen bill of materials (BOM)

114 components, 15 distinct parts.

QtyPartRefs
1
ATmega32U4-AU
U1
1
16Mhz
Y1
1
500mA
F1
1
SW_Push
SW1
1
Molex-0548190589
USB1
47
MX-NoLED
MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX8 +39
1
MX-NoLED
MX44
1
MX-NoLED
MX46
49
SOD-123
D1, D2, D3, D4, D5, D6, D7, D8 +41
2
22pF
C1, C2
1
1uF
C3
3
0.1uF
C4, C5, C6
1
10uF
C7
2
10k
R1, R4
2
22
R2, R3

Bakers dozen design files

The KiCad project lives in the MaxScame/Bakers-dozen repository on GitHub; these links point at the commit this page was built from.

Bakers dozen: common questions

What microcontroller does the Bakers dozen use?

The Bakers dozen is built around the ATmega32U4-AU, from the AVR/Arduino family.

How big is the Bakers dozen PCB?

The Bakers dozen measures 247.7 × 82.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Bakers dozen?

114 components, from 15 distinct parts. The full bill of materials is listed on this page.

Where can I download the Bakers dozen design files?

From the MaxScame/Bakers-dozen repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Bakers dozen design in my own project?

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

Can I test firmware for the Bakers dozen 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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