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2 layers148.7 × 142.4 mmBluejay left, the printed circuit board in 3D

Split Ergo Keyboard

Size
148.7 × 142.4 mm
Copper layers
2
Thickness
1.6 mm
Parts
79
Nets
57
Pads
270
Tracks, vias
321, 5
Pours
1
Routed
Yes
KiCad
KiCad 6 (file 20211014)
Created
5 Jun 2022
Updated
16 Jun 2023

Overview

Bluejay left is an open-source printed circuit board by JonathanFerron, from the JonathanFerron/BlueJay repository on GitHub. It is a 2-layer board of 148.7 × 142.4 mm with 79 parts on 57 nets, routed with 321 tracks and 5 vias.

It is built around the ATMEGA328P-PU and SJ-43514. Its parts include 5 capacitors, 4 resistors, 1 IC, 1 connector and 1 crystal. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.

Main components

2

README

README.md

BlueJay

Split Ergonomic Keyboard

This is a project for a new split ergonomic QMK-powered keyboard. The goal is for it to be minimalist, meant for users who strictly touch-type, and made with easy to solder through-hole components. It is significantly inspired on the Torn split keyboard, with modifications such as adding a partial "numrow" and moving the thumb cluster further out.

Prototype Key Positions

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

CC BY-NC-SA 4.0

Parts

79
QtyValueFootprintReferences
271N4148BlueJay footprints:D_DO-35_SOD27_P5.08mm_HorizontalDa1, Da2, Da3, Da4, Da5, Db1, Db2, Db3, Db4, Db5, Dc1, Dc2, Dc3, Dc4, Dc5, Dd1 +11
27KEYSWBlueJay footprints:SW_MXSWa1, SWa2, SWa3, SWa4, SWa5, SWb1, SWb2, SWb3, SWb4, SWb5, SWc1, SWc2, SWc3, SWc4, SWc5, SWd1 +11
6M2MountingHole:MountingHole_2.2mm_M2_PadH1, H2, H3, H4, H5, H6
2100nBlueJay footprints:C_Disc_D4.3mm_W1.9mm_P5.00mmC4, C5
222pBlueJay footprints:C_Disc_D3.0mm_W1.6mm_P2.50mmC1, C2
23.6VBlueJay footprints:D_DO-35_SOD27_P5.08mm_HorizontalDZ1, DZ2
275RBlueJay footprints:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_HorizontalR2, R3
11.5kBlueJay footprints:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_HorizontalR1
1100mAFuse_AKL:Fuse_Bourns_MF-RG300F1
110kBlueJay footprints:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_HorizontalR4
116MHzBlueJay footprints:Crystal_HC49-4H_VerticalY1
14.7uBlueJay footprints:CP_Radial_D4.0mm_P1.50mmC3
1ATmega328P-PUPackage_DIP_AKL:DIP-28_W7.62mm_SocketU1
1BOOTBlueJay footprints:SW_PUSH_6mmPB2
1RESETBlueJay footprints:SW_PUSH_6mmPB1
1SJ-43514BlueJay footprints:CUI_SJ-43514J1
1USB_B_MiniBlueJay footprints:USB_Mini_B_Female_548190519USB1
1Val**BlueJay footprints:BlueJay in Halfomania fontRef**

Questions

How big is the Bluejay left PCB?

It measures 148.7 × 142.4 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Bluejay left use?

79 parts, built around the ATMEGA328P-PU and SJ-43514. 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 Bluejay left KiCad files?

From the JonathanFerron/BlueJay repository on GitHub, at the commit this page was made from: the board is pcb_left/bluejay_left.kicad_pcb and its schematic build/flashingbootldr/flashingbootldr/flashingbootldr.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Bluejay left design in my own project?

Its repository states no licence, so its author keeps all rights: ask JonathanFerron before reusing the design.

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