HardLabs

Spectre

ahtn·keyboard_pcb·spectre/spectre.kicad_pcb

Spectre PCB layout, top view — open source AVR/Arduino board by ahtn

About the Spectre PCB

Spectre is an open source AVR/Arduino PCB design by ahtn, published on GitHub. It is a 2-layer board measuring 223 × 72.2 mm, with 60 components from 7 distinct parts.

Its main chip is the ATXMEGA64A3U-MH, from the AVR/Arduino family. Other key parts include the MIC550X. By type, the board carries 48 relays, 7 capacitors, 2 ICs, 2 resistors and 1 connector.

It belongs with the keyboards designs in this gallery.

Spectre, from the project README
From the project README

Main components on the Spectre

MIC550XATXMEGA64A3U-MH

Spectre bill of materials (BOM)

60 components, 7 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MIC550X
U1
1
ATXMEGA64A3U-MH
U2
1
USB_Type_C_2.0_Receptacle
J2
48
K00
K0, K1, K2, K3, K4, K5, K6, K7 +40
1
10uF
C1
6
0.1uF
C2, C3, C4, C5, C6, C7
2
R
R1, R2

Spectre design files

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

Spectre: common questions

What microcontroller does the Spectre use?

The Spectre is built around the ATXMEGA64A3U-MH, from the AVR/Arduino family.

How big is the Spectre PCB?

The Spectre measures 223 × 72.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Spectre?

60 components, from 7 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 Spectre design files?

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

Can I use the Spectre design in my own project?

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

Can I test firmware for the Spectre 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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