HardLabs

Neolexis

rhettjay·keeb·neolexis/pcb/neolexis.kicad_pcb

Neolexis PCB layout, top view — open source AVR/Arduino board by rhettjay

About the Neolexis PCB

Neolexis is an open source AVR/Arduino PCB design by rhettjay, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 141 × 103.6 mm, with 121 components from 16 distinct parts.

Its main chip is the ProMicro, from the AVR/Arduino family. Other key parts include the nice_nano. By type, the board carries 42 diodes, 34 relays, 34 switches, 2 ICs, 2 resistors and 1 transformer.

It belongs with the keyboards designs in this gallery.

From the project

custom ergonomic keyboards

Main components on the Neolexis

nice_nanoProMicro

Neolexis bill of materials (BOM)

121 components, 16 distinct parts.

QtyPartRefs
1
nice_nano
MCU1
1
ProMicro
U1
1
Panasonic_EVQPUL_EVQPUC
B1
1
VAL**
HOLE_M3
4
KEYSW
K0, K10, K20, K30
28
KEYSW
K1, K2, K3, K4, K5, K6, K11, K12 +20
2
KEYSW
K36, K46
1
Conn_01x03
RGB_STRIP1
1
SW_PUSH
RST_SW1
34
—
S1, S2, S3, S4, S5, S6, S7, S8 +26
1
—
T1
1
Audio-Jack-4
TRRS1
1
—
JST1
22
D
D0, D1, D3, D4, D5, D10, D11, D13 +14
20
—
D2, D6, D7, D8, D9, D12, D15, D16 +12
2
4.7k
R1, R2

Neolexis design files

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

Neolexis: common questions

What microcontroller does the Neolexis use?

The Neolexis is built around the ProMicro, from the AVR/Arduino family.

How big is the Neolexis PCB?

The Neolexis measures 141 × 103.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Neolexis?

121 components, from 16 distinct parts. The full bill of materials is listed on this page.

Where can I download the Neolexis design files?

From the rhettjay/keeb repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Neolexis design in my own project?

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

Can I test firmware for the Neolexis 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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