

Bluejay left
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
2README
README.mdBlueJay
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.
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Parts
79| Qty | Value | Footprint | References |
|---|---|---|---|
| 27 | 1N4148 | BlueJay footprints:D_DO-35_SOD27_P5.08mm_Horizontal | Da1, Da2, Da3, Da4, Da5, Db1, Db2, Db3, Db4, Db5, Dc1, Dc2, Dc3, Dc4, Dc5, Dd1 +11 |
| 27 | KEYSW | BlueJay footprints:SW_MX | SWa1, SWa2, SWa3, SWa4, SWa5, SWb1, SWb2, SWb3, SWb4, SWb5, SWc1, SWc2, SWc3, SWc4, SWc5, SWd1 +11 |
| 6 | M2 | MountingHole:MountingHole_2.2mm_M2_Pad | H1, H2, H3, H4, H5, H6 |
| 2 | 100n | BlueJay footprints:C_Disc_D4.3mm_W1.9mm_P5.00mm | C4, C5 |
| 2 | 22p | BlueJay footprints:C_Disc_D3.0mm_W1.6mm_P2.50mm | C1, C2 |
| 2 | 3.6V | BlueJay footprints:D_DO-35_SOD27_P5.08mm_Horizontal | DZ1, DZ2 |
| 2 | 75R | BlueJay footprints:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R2, R3 |
| 1 | 1.5k | BlueJay footprints:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1 |
| 1 | 100mA | Fuse_AKL:Fuse_Bourns_MF-RG300 | F1 |
| 1 | 10k | BlueJay footprints:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R4 |
| 1 | 16MHz | BlueJay footprints:Crystal_HC49-4H_Vertical | Y1 |
| 1 | 4.7u | BlueJay footprints:CP_Radial_D4.0mm_P1.50mm | C3 |
| 1 | ATmega328P-PU | Package_DIP_AKL:DIP-28_W7.62mm_Socket | U1 |
| 1 | BOOT | BlueJay footprints:SW_PUSH_6mm | PB2 |
| 1 | RESET | BlueJay footprints:SW_PUSH_6mm | PB1 |
| 1 | SJ-43514 | BlueJay footprints:CUI_SJ-43514 | J1 |
| 1 | USB_B_Mini | BlueJay footprints:USB_Mini_B_Female_548190519 | USB1 |
| 1 | Val** | BlueJay footprints:BlueJay in Halfomania font | Ref** |
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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