2 layers326.7 × 132.7 mm Bloomer, the printed circuit board in 3D

Bloomer

An 87 key ergonomic mechanical keyboard

Size: 326.7 × 132.7 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 208
Nets: 126
Pads: 1,085
Tracks, vias: 1,440, 78
Routed: Yes
KiCad: KiCad 5 (file 20171130)
Created: 6 Jun 2018
Updated: 21 Dec 2024

Overview

Bloomer is an open-source printed circuit board by cozykeys, from the cozykeys/bloomer repository on GitHub, published under the MIT licence. It is a 2-layer board of 326.7 × 132.7 mm with 208 parts on 126 nets, routed with 1,440 tracks and 78 vias.

Its parts include 90 diodes and 90 switches. It belongs with the keyboards and input boards of this library.

README

README.md

CozyKeys Bloomer

This repository contains the design files for the CozyKeys Bloomer, an 87-key ergonomic mechanical keyboard.

This keyboard has undergone several revisions and name changes. Previous names were Atreus87 and Ergo87 and artifacts of these may still be present in the repository.

Bloomer

Firmware

Project Status

rev0

The first revision of the board was hand-wired and built as a proof of concept to ensure that the layout is comfortable.

rev1

The second revision added a PCB and a complete redesign of the case so that the PCB would fit accurately.

This initial PCB was functional but lacked any RGB support. It also had a few issues:

When placing the ItsyBitsy upside down to reduce the height needed between the switch plate and bottom plate, there is no easy way to access RST
Switch footprints were "flippable" which was misleading as the controller pinout only supported a single orientation

rev2

The second revision added several features and fixes:

Dedicated reset button with the case updated to make this accessible
Single orientation switch footprints
RGB underglow support

Rev2 Build Guide

rev3 (REDACTED)

See: v3.0 README

Category and platform

Keyboards and input

Project files

Show this board on your page

https://pcbkit.io/boards/cozykeys/bloomer

The board's own page, for a message or a post.

Source

Repository: cozykeys/bloomer
Board file: v3.0/pcb/bloomer.kicad_pcb
Commit: 8d4805b
Homepage: cozykeys.xyz/keyboards/bloomer
Licence: MIT

Parts

208

Qty	Value	Footprint	References
90		DIODE	D0:0, D0:1, D0:2, D0:3, D0:4, D0:5, D0:6, D0:7, D0:8, D0:9, D0:10, D0:11, D0:12, D0:13, D0:14, D1:0 +74
90		MX_SWITCH	SW0:0, SW0:1, SW0:2, SW0:3, SW0:4, SW0:5, SW0:6, SW0:7, SW0:8, SW0:9, SW0:10, SW0:11, SW0:12, SW0:13, SW0:14, SW1:0 +74
12	VAL**	WS2812B	RGB0, RGB1, RGB2, RGB3, RGB4, RGB5, RGB6, RGB7, RGB8, RGB9, RGB10, RGB11
10	VAL**	HOLE_M3	HOLE_M3, HOLE_M3, HOLE_M3, HOLE_M3, HOLE_M3, HOLE_M3, HOLE_M3, HOLE_M3, HOLE_M3, HOLE_M3
2		Sparkfun-Aesthetics:OSHW-LOGO-M	,
2	LOGO	myparts:qmk-badge	G*, G*
1	ItsyBitsy	ItsyBitsy	ItsyBitsy 32u4
1	VAL**	B3F-10XX	RESET

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Questions

How big is the Bloomer PCB?

It measures 326.7 × 132.7 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Bloomer use?

208 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Bloomer KiCad files?

From the cozykeys/bloomer repository on GitHub, at the commit this page was made from: the board is v3.0/pcb/bloomer.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Bloomer design in my own project?

Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).