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Dogema48 cfx

ChrisChrisLoLo·bancouver40·minipeg48/pcb/dogema48_cfx/dogema48_cfx.kicad_pcb

Dogema48 cfx PCB layout, top view — open source AVR/Arduino board by ChrisChrisLoLo
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About the Dogema48 cfx PCB

Dogema48 cfx is an open source AVR/Arduino PCB design by ChrisChrisLoLo, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 204 × 69.4 mm, with 117 components from 14 distinct parts.

Its main chip is the ATmega32U4-M, from the AVR/Arduino family. By type, the board carries 51 switches, 48 diodes, 7 capacitors, 6 resistors, 1 IC and 1 crystal.

It belongs with the keyboards designs in this gallery.

From the project

A 4x10 CFX spaced low-profile mechanical keyboard.

A 4x10 CFX spaced low-profile mechanical keyboard.

Uncompromisingly small. Unabashedly uwu.

Also contains the source code for the 4x12 minipeg48 and the 4x4 kowgary16.

This keyboard also has the design files needed to order your own accompanying 3D-printed/Aluminum CNC case!

Additionally, you should need - 40 (plus spare) kailh choc switches. Avoid Red/White/Brown switches as they can be pretty rattly. Pro Red/Silver/Sunset switches are good places to start. - 40 (plus spare) 1u CFX keycaps

Main components on the Dogema48 cfx

ATmega32U4-M

Dogema48 cfx bill of materials (BOM)

117 components, 14 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATmega32U4-M
U1
1
16MHz
Y1
1
USB_C_Receptacle_USB2.0
J1
1
SW_Push
B1
1
500mA
F1
51
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +43
48
D_Small
D1, D2, D3, D4, D5, D6, D7, D8 +40
2
22pF
C1, C2
1
1uF
C3
3
0.1uF
C4, C5, C6
1
10uF
C7
2
10k
R1, R6
2
5k1
R2, R3
2
22R
R4, R5

Dogema48 cfx design files

The KiCad project lives in the ChrisChrisLoLo/bancouver40 repository on GitHub; these links point at the commit this page was built from.

Dogema48 cfx: common questions

What microcontroller does the Dogema48 cfx use?

The Dogema48 cfx is built around the ATmega32U4-M, from the AVR/Arduino family.

How big is the Dogema48 cfx PCB?

The Dogema48 cfx measures 204 × 69.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Dogema48 cfx?

117 components, from 14 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 Dogema48 cfx design files?

From the ChrisChrisLoLo/bancouver40 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 Dogema48 cfx design in my own project?

Yes, under the terms of its GPL-3.0 license, which ChrisChrisLoLo chose for the repository.

Can I test firmware for the Dogema48 cfx 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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