HardLabs

Main

fattiebunnie·keyboard·Keyboard_65/Kicad Files/Mainpcb.kicad_pcb

Main PCB layout, top view — open source Nordic nRF board by fattiebunnie

About the Main PCB

Main is an open source Nordic nRF PCB design by fattiebunnie, published on GitHub. It is a 2-layer board measuring 361.6 × 100.2 mm, with 146 components from 10 distinct parts.

Its main chip is the nrf52840_ProMicro, from the Nordic nRF family. By type, the board carries 3 connectors, 3 switches, 2 capacitors and 1 IC.

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

From the project

This keyboard is a 65% Keyboard with a knob and place for 2 screens to go onto

This keyboard is a 65% Keyboard with a knob and place for 2 screens to go onto

Keyboard layout…

Main, from the project README
From the project README

Main components on the Main

nrf52840_ProMicro

Main bill of materials (BOM)

146 components, 10 distinct parts.

QtyPartRefs
1
nrf52840_ProMicro
U3
1
0.91IN_OLED_Display
J2
1
0.96IN_OLED_Display
J3
1
CONN_1X2
P1
69
D
D_0, D_1, D_2, D_3, D_4, D_5, D_6, D_7 +61
68
KEYSW
K_0, K_1, K_2, K_3, K_4, K_5, K_6, K_7 +60
1
SW_Push
SW1
1
Rotary_Encoder_Switch
SW2
1
SW_SPDT
SW3
2
C
C1, C2

Main design files

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

Main: common questions

What microcontroller does the Main use?

The Main is built around the nrf52840_ProMicro, from the Nordic nRF family.

How big is the Main PCB?

The Main measures 361.6 × 100.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Main?

146 components, from 10 distinct parts. The full bill of materials is listed on this page.

Where can I download the Main design files?

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

Can I use the Main design in my own project?

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

Can I test firmware for the Main without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Nordic nRF firmware against it before you order a PCB.

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