HardLabs

Small paintbrush hotswap

artseyio·thepaintbrush·hardware/v4/small-paintbrush-hotswap.kicad_pcb

Small paintbrush hotswap PCB layout, top view — open source AVR/Arduino board by artseyio
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About the Small paintbrush hotswap PCB

Small paintbrush hotswap is an open source AVR/Arduino PCB design by artseyio, published on GitHub. It is a 2-layer board measuring 94 × 50 mm, with 17 components from 6 distinct parts.

Its main chip is the ProMicro, from the AVR/Arduino family. By type, the board carries 3 connectors, 2 ICs and 2 switches.

It belongs with the keyboards designs in this gallery.

From the project

Small keyboard designs for folks who cannot use 'traditional' keyboard designs. These designs are focused on running the artsey.io keyboard layout.

This is the fourth hardware design of the Paintbrush mini keyboard. This version removes the 'leg' from version 3 and moves the secondary features (switch/reset button) to a more user friendly location at the top of the board.

Please see the following sections for details about this hardware version.

- Reversable PCB - Can be built left OR right handed - Pro Micro compatible MCU foot print - Kalih Choc v1 mechanical switches - Soldered directly OR using kalih hot swap sockets - OLED support (optional) - Slide switch that can be used as a power switch (optional) - Reset button (optional) -…

Small paintbrush hotswap, from the project README
From the project README

Main components on the Small paintbrush hotswap

ProMicro

Small paintbrush hotswap bill of materials (BOM)

17 components, 6 distinct parts.

QtyPartRefs
2
ProMicro
U1, U2
1
Conn_01x02
J1
2
Conn_01x04
J2, J3
8
SW_Push
KEY1, KEY2, KEY3, KEY4, KEY5, KEY6, KEY7, KEY8
2
SW_Push
PUSH1, PUSH2
2
SW_SPDT
SW1, SW2

Small paintbrush hotswap design files

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

Small paintbrush hotswap: common questions

What microcontroller does the Small paintbrush hotswap use?

The Small paintbrush hotswap is built around the ProMicro, from the AVR/Arduino family.

How big is the Small paintbrush hotswap PCB?

The Small paintbrush hotswap measures 94 × 50 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Small paintbrush hotswap?

17 components, from 6 distinct parts. The full bill of materials is listed on this page.

Where can I download the Small paintbrush hotswap design files?

From the artseyio/thepaintbrush repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Small paintbrush hotswap design in my own project?

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

Can I test firmware for the Small paintbrush hotswap 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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