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Nora

jpskenn·Nora·PCB_FW/nora.kicad_pcb

Nora PCB layout, top view — open source RP2040/RP2350 board by jpskenn
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About the Nora PCB

Nora is an open source RP2040/RP2350 PCB design by jpskenn, published on GitHub under the MIT license. It is a 2-layer board measuring 285 × 95.1 mm, with 272 components from 101 distinct parts.

Its main chip is the Pico, from the RP2040/RP2350 family. Other key parts include the ATMEGA32U4-MU and 24LC64. By type, the board carries 73 diodes, 71 inductors, 9 jumpers, 9 resistors, 7 capacitors and 5 connectors.

It belongs with the keyboards designs in this gallery.

From the project

Narrow pitch keyboard with Choc switches and keycaps. GH60 compatible.

Nora（ノラ）は、Choc v1 ロープロファイルスイッチを使用する、狭ピッチの一体型キーボードです。 姉妹機Jones（ジョーンズ）と同様の、2行目と3行目にずれのない左右対称の配列が特徴です。 専用のボトムプレートや、GH60型，Poker型のロープロファイルケースと組み合わせて使用できます。

Nora is a narrow pitch keyboard with Choc v1 low profile switches. It has symmetrical gapless R2-R3 row, like Jones. Original bottom plate and GH60/Poker compatible low profile cases are supported.

- 対象とするユーザー - コンセプト - 特徴 - 機能 - ビルドガイド - ビルド例 - 製作歴

Nora, from the project README
From the project README

Main components on the Nora

ATMEGA32U4-MU24LC64Pico

Nora bill of materials (BOM)

272 components, 101 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATMEGA32U4-MU
ATmega32U4-MU
U1
1
24LC64
U2
1
Pico
U4
1
16MHZ
16MHz
Y1
1
USB_C_RECEPTACLE_USB2.0
USB_C_Receptacle_USB2.0
J1
1
CONN_01X04
Conn_01x04
J2
2
CONN_01X02
Conn_01x02
J3, J4
1
CONN_02X03_ODD_EVEN
Conn_02x03_Odd_Even
J5
18
Conn_01x01
EXT_C0, EXT_C1, EXT_C2, EXT_C3, EXT_C4, EXT_C5, EXT_C6, EXT_C7 +10
1
Conn_01x01
Ext_AUDIO_PC6
1
500MA
500mA
F1
8
SOLDERJUMPER_2_OPEN
SolderJumper_2_Open
JP1, JP2, JP4, JP5, JP6, JP7, JP8, JP9
1
SOLDERJUMPER_3_OPEN
SolderJumper_3_Open
JP3
1
Speaker
LS1
1
RotaryEncoder_Switch
RE_42
1
5.2X5.2MM
5.2x5.2mm
ResetSW1
1
ESC
SW_1
1
LSFT
SW_3
1
1
SW_5
1
TAB 1.5u
SW_6
Show 81 more
QtyPartRefs
1
LCTL 1.5u
SW_7
1
Z
SW_8
1
2
SW_10
1
Q
SW_11
1
A
SW_12
1
X
SW_13
1
3
SW_15
1
W
SW_16
1
S
SW_17
1
C
SW_18
1
LGUI 1.5u
SW_19
1
4
SW_20
1
E
SW_21
1
D
SW_22
1
V
SW_23
1
LALT
SW_24
1
5
SW_25
1
R
SW_26
1
F
SW_27
1
B
SW_28
1
LSPC 1.5u
SW_29
1
`~
SW_30
1
T
SW_31
1
G
SW_32
1
L-Macro
SW_33
1
R1L
SW_35
1
[{
SW_36
1
;:
SW_37
1
R4L
SW_38
1
Center L
SW_39
1
R1R
SW_40
1
R2C
SW_41
1
R3C
SW_42
1
R4R
SW_43
1
Center 1.5u
SW_44
1
\|
SW_45
1
]}
SW_46
1
'"
SW_47
1
R-Macro
SW_48
1
Center R
SW_49
1
6
SW_50
1
Y
SW_51
1
H
SW_52
1
N
SW_53
1
RSPC 1.5u
SW_54
1
7
SW_55
1
U
SW_56
1
J
SW_57
1
M
SW_58
1
RALT
SW_59
1
8
SW_60
1
I
SW_61
1
K
SW_62
1
<
SW_63
1
RGUI 1.5u
SW_64
1
9
SW_65
1
O
SW_66
1
L
SW_67
1
>
SW_68
1
0
SW_70
1
P
SW_71
1
-
SW_72
1
/
SW_73
1
=
SW_75
1
BS 1.5u
SW_76
1
Enter 1.5u
SW_77
1
RSFT
SW_78
72
C81598
D_Small
D1, D2, D4, D5, D6, D7, D9, D11 +64
1
PRTR5V0U2X
D10
62
SK6812MINI-E
L1, L2, L3, L4, L5, L6, L7, L10 +54
7
SK6812MINI-E
L8, L9, L24, L39, L54, L55, L67
2
SK6812MINI-E
L38, L40
1
10UF
10uF
C1
2
22PF
22pF
C2, C3
3
0.1UF
0.1uF
C4, C5, C7
1
1UF
1uF
C6
2
5.1K
5.1k
R1, R2
2
22
R3, R4
2
10K
10k
R5, R6
1
1k
R7
2
4.7K
4.7k
R8, R9

Nora design files

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

Nora: common questions

What microcontroller does the Nora use?

The Nora is built around the Pico, from the RP2040/RP2350 family.

How big is the Nora PCB?

The Nora measures 285 × 95.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Nora?

272 components, from 101 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Nora design files?

From the jpskenn/Nora repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Nora design in my own project?

Yes, under the terms of its MIT license, which jpskenn chose for the repository.

Can I test firmware for the Nora without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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