HardLabs

Nexus

HashirX-ux·Nexus

Nexus PCB layout, top view — open source board by HashirX-ux
Simulate this board

About the Nexus PCB

Nexus is an open source PCB design by HashirX-ux, published on GitHub under the MIT license. It is a 2-layer board measuring 133.5 × 86 mm, with 70 components from 34 distinct parts.

Other key parts include the OLED_0.91"_12C, MCP73831-2-MC, 74AHCT125 and nice_nano. By type, the board carries 25 diodes, 13 switches, 13 capacitors, 8 resistors, 4 ICs and 2 connectors.

It belongs with the keyboards, iot & wireless and displays & leds designs in this gallery.

From the project

A customizable mechanical macropad for productivity, shortcuts, and macros. Built with QMK firmware support.

Nexus is a custom 3x4 (12 key) macropad i designed mainly for shortcuts and repetitive commands i was tired of typing out. Built around a nice!nano v2 so it can do bluetooth LE, with USB-C as a backup if the battery dies or i just don't feel like pairing it again. 12 hot swap sockets, per key RGB underneath, an EC11 rotary encoder, and a little OLED that shows battery % and what its connected to.

Main components on the Nexus

OLED_0.91"_12CMCP73831-2-MC74AHCT125nice_nano

Nexus bill of materials (BOM)

70 components, 34 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
OLED_0.91"_12C
U2
1
MCP73831-2-MC
U3
1
74AHCT125
U4
1
nice_nano
U5
1
2N3904
Q1
1
Conn_01x02
J1
1
USB_C_Receptacle_USB2.0_16P
J2
1
Buzzer
BZ1
2
100nF
De_Cap1, De_Cap2
1
500mA
F1
1
BTN1
SW1
1
BTN2
SW2
1
BTN3
SW3
1
BTN4
SW4
1
BTN5
SW5
1
BTN6
SW6
1
BTN7
SW7
1
BTN8
SW8
1
BTN9
SW9
1
BTN10
SW10
Show 14 more
QtyPartRefs
1
BTN11
SW11
1
BTN12
SW12
1
Reset_BTN
SW14
9
1N4148
D1, D2, D6, D7, D8, D9, D10, D11 +1
3
1N4841
D3, D4, D5
1
LED
D13
12
SK6812MINI-E
D14, D15, D16, D17, D18, D19, D20, D21 +4
13
100nF
C2, C3, C4, C5, C6, C7, C8, C9 +5
2
5.1k
R1, R2
2
10k
R3, R4
1
1k
R5
1
2k
R6
1
330R
R7
1
1k
R8

Nexus design files

The KiCad project lives in the HashirX-ux/Nexus repository on GitHub; these links point at the commit this page was built from.

Nexus: common questions

How big is the Nexus PCB?

The Nexus measures 133.5 × 86 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Nexus?

70 components, from 34 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 Nexus design files?

From the HashirX-ux/Nexus repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Nexus design in my own project?

Yes, under the terms of its MIT license, which HashirX-ux chose for the repository.

Similar boards