HardLabs

Triad center

cozykeys·resources·concepts/triad/pcb/triad_center/triad_center.kicad_pcb

Triad center PCB layout, top view — open source AVR/Arduino board by cozykeys

About the Triad center PCB

Triad center is an open source AVR/Arduino PCB design by cozykeys, published on GitHub. It is a 2-layer board measuring 57.2 × 127.7 mm, with 59 components from 18 distinct parts.

Its main chip is the ATMEGA32U4, from the AVR/Arduino family. By type, the board carries 13 relays, 13 diodes, 12 capacitors, 6 resistors, 4 connectors and 4 inductors.

It belongs with the keyboards designs in this gallery.

From the project

Various utilities for making keyboard development easier

- XML beautifier used to format layout files: - XML Beautifier - Script for scaling Kicad modules, useful for graphics: - Kicad Module Scaler

Main components on the Triad center

ATMEGA32U4

Triad center bill of materials (BOM)

59 components, 18 distinct parts.

QtyPartRefs
1
ATMEGA32U4
U1
1
Crystal_GND24
X1
2
MOLEX_FPC_20_P0.5mm_505110-2091
J1, J2
1
USB_C_Receptacle
J3
1
Conn_01x04
J4
4
VAL**
H1, H2, H3, H4
13
MX
K00, K01, K02, K03, K04, K05, K06, K07 +5
1
SW_Push
SW1
13
D_Small
D00, D01, D02, D03, D04, D05, D06, D07 +5
4
WS2812B
L1, L2, L3, L4
2
22p
C1, C2
4
0.1u
C3, C4, C5, C6
1
4.7u
C7
1
1u
C8
4
100n
C9, C10, C11, C12
2
10k
R1, R2
2
22
R3, R4
2
5.1k
R5, R6

Triad center design files

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

Triad center: common questions

What microcontroller does the Triad center use?

The Triad center is built around the ATMEGA32U4, from the AVR/Arduino family.

How big is the Triad center PCB?

The Triad center measures 57.2 × 127.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Triad center?

59 components, from 18 distinct parts. The full bill of materials is listed on this page.

Where can I download the Triad center design files?

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

Can I use the Triad center design in my own project?

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

Can I test firmware for the Triad center 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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