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Eliza

str-dst·Eliza·pcb/Eliza.kicad_pcb

Eliza PCB layout, top view — open source AVR/Arduino board by str-dst
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About the Eliza PCB

Eliza is an open source AVR/Arduino PCB design by str-dst, published on GitHub. It is a 2-layer board measuring 259 × 88.3 mm, with 79 components from 16 distinct parts.

Its main chip is the ATMEGA32U2-A, from the AVR/Arduino family. Other key parts include the SRV05-4. By type, the board carries 41 LEDs, 21 diodes, 6 capacitors, 6 resistors, 2 ICs and 1 crystal.

It belongs with the keyboards designs in this gallery.

From the project

12u 40% ergo keyboard

- Powered by an Atmega32u2 - Basic ESD and overvoltage protection - Centered USB type-C port for a detachable cable - Fully programmable using QMK and Vial

Eliza, from the project README
From the project README

Main components on the Eliza

ATMEGA32U2-ASRV05-4

Eliza bill of materials (BOM)

79 components, 16 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATMEGA32U2-A
ATmega32U2-A
U1
1
SRV05-4
U2
1
CRYSTAL_GND24_SMALL
Crystal_GND24_Small
X1
1
C69688
Polyfuse_Small
F1
1
USB_C_RECEPTACLE_USB2.0
USB_C_Receptacle_USB2.0
USB1
39
MX-NoLED
MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX8 +31
1
MX-NoLED
MX38
1
MX-NoLED
MX39
21
C68978
D_Small
D1, D2, D3, D4, D5, D6, D7, D8 +13
1
10UF
10uF
C1
2
0.1UF
0.1uF
C2, C3
2
22PF
22pF
C4, C5
1
1UF
1uF
C6
2
5.1K
5.1k
R1, R2
2
22
R3, R4
2
10K
10k
R5, R6

Eliza design files

The KiCad project lives in the str-dst/Eliza repository on GitHub; these links point at the commit this page was built from.

Eliza: common questions

What microcontroller does the Eliza use?

The Eliza is built around the ATMEGA32U2-A, from the AVR/Arduino family.

How big is the Eliza PCB?

The Eliza measures 259 × 88.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Eliza?

79 components, from 16 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 Eliza design files?

From the str-dst/Eliza 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 Eliza design in my own project?

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

Can I test firmware for the Eliza 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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