Nijuni
About the Nijuni PCB
Nijuni is an open source PCB design by krikun98, published on GitHub. It is a 2-layer board measuring 153.6 × 95.3 mm, with 64 components from 12 distinct parts.
Other key parts include the ProMicro. By type, the board carries 22 relays, 22 diodes, 10 jumpers, 3 connectors, 2 ICs and 2 switches.
It belongs with the keyboards and iot & wireless designs in this gallery.
From the project
44-key split keyboard with the Jian's stagger and the Corne's thumb cluster with a wireless focus.
The Nijuni (formerly known as the RT-22) is a 44-key split keyboard inspired by the Jian (stagger, pinky and controller footprint) and the Jorne (thumb cluster and wiring).
It was originally conceived by DwarZ, however, V0.1 had a screw placement issue that restricted it to Kailh BOX-style switches. V0.2 is trouble-free, and prototypes have already been tested.
Main components on the Nijuni
Nijuni bill of materials (BOM)
64 components, 12 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ProMicro | ProMicro_Flipped_v2_A | U1 |
| 1 | ProMicro | ProMicro_Flipped_v2_B | U2 |
| 1 | MJ-4PP-9 | MJ-4PP-9 | J1 |
| 1 | Conn_01x04 | OLED_v2 | J2 |
| 1 | Conn_01x02_Female | Battery_TH | J3 |
| 2 | MountingHole | M2-ClearanceHole | H8, H9 |
| 10 | SolderJumper_2_Open | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1, JP2, JP3, JP4, JP5, JP6, JP7, JP8 +2 |
| 21 | KEYSW | MX-Alps-HS-1U-REV | K1, K2, K3, K4, K5, K6, K7, K8 +13 |
| 1 | KEYSW | MX-Alps-HS-1.5U-REV | K22 |
| 1 | SW_PUSH | ResetSW | RSW1 |
| 2 | SW_SPDT | SW_SPDT+H-MSK12C01_hor(7pin_SMD) | SW1, SW2 |
| 22 | D_Small | D3_SMD | D1, D2, D3, D4, D5, D6, D7, D8 +14 |
Nijuni design files
The KiCad project lives in the krikun98/nijuni repository on GitHub; these links point at the commit this page was built from.
- Layoutpcb/pinky/nijuni.kicad_pcb
- Schematicpcb/pinky/nijuni.kicad_sch
Nijuni: common questions
How big is the Nijuni PCB?
The Nijuni measures 153.6 × 95.3 mm, has 2 copper layers and is 0.81 mm thick.
How many components are on the Nijuni?
64 components, from 12 distinct parts. The full bill of materials is listed on this page.
Where can I download the Nijuni design files?
From the krikun98/nijuni repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Nijuni design in my own project?
The repository has no license, so all rights stay with krikun98. Use it as a reference, and ask the author before reusing the design.
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