HardLabs

Sudi keyboard

ahsanu123·sudi-keyboard·pcb-design/version_2/sudi-keyboard.kicad_pcb

Sudi keyboard PCB layout, top view — open source Nordic nRF board by ahsanu123

About the Sudi keyboard PCB

Sudi keyboard is an open source Nordic nRF PCB design by ahsanu123, published on GitHub under the MIT license. It is a 2-layer board measuring 123.4 × 99.4 mm, with 134 components from 45 distinct parts.

Its main chip is the NRF52832-QFXX, from the Nordic nRF family. Other key parts include the CH340C, BQ24075RGT_DPPM, TPS63002_SEPIC_5V, MCP23017_SS and TPS63001_SEPIC_3V3. By type, the board carries 39 capacitors, 38 diodes, 18 relays, 15 resistors, 7 ICs and 6 connectors.

It belongs with the keyboards, iot & wireless and displays & leds designs in this gallery.

From the project

⌨️ Sudi V2 is custom wireless split keyboard

Sudi V2 is custom wireless split keyboard based on NRF52832 Nordic Semiconductor Microcontroller series, each side consist 18 keys 36 in totals, use MCP23017 I2C I/O expansion to scan one side of keyboard, and use wire to trasfer data to NRF52. Built in SWD debug port, with Serial Logger based on CH340G. Sudi Have interactive RGB LED and OLED 0.91 inch for graphic display. Planned to create 3D print enclosure.

Sudi keyboard, from the project README
From the project README

Main components on the Sudi keyboard

CH340CBQ24075RGT_DPPMTPS63002_SEPIC_5VNRF52832-QFXXMCP23017_SSTPS63001_SEPIC_3V3MAX17048

Sudi keyboard bill of materials (BOM)

134 components, 45 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
CH340C
U4
1
BQ24075RGT_DPPM
U5
1
TPS63002_SEPIC_5V
U6
1
NRF52832-QFXX
nRF52832-QFxx
U7
1
MCP23017_SS
U8
1
TPS63001_SEPIC_3V3
U9
1
MAX17048
U10
1
PJA3404_(G1,D3,S2)
Q1
1
PJA3405_(G1,D3,S2)
Q2
1
32MHZ_CF4032M00020001
32MHz_CF4032M00020001
Y1
2
SIDE_CON
J1, J5
1
SWD_JLINK
J2
1
0.91 OLED
J3
1
BatCon
J4
1
USB_C_PLUG_USB2.0
USB_C_Plug_USB2.0
P1
1
2.4GHZ
2.4GHz
AE1
18
KEYSW
K1, K2, K3, K4, K5, K6, K7, K8 +10
1
RST
SW1
1
PWR_SWITCH
SW3
1
5V_EN
SW4
Show 25 more
QtyPartRefs
18
1N4148
D1, D2, D3, D5, D6, D7, D14, D15 +10
1
green
D4
18
WS2812B
D8, D9, D10, D11, D12, D13, D17, D18 +10
1
red
D32
1
60R@100Mhz
FB1
2
22UH
22uH
L1, L2
1
3.9NH
3.9nH
L3
2
4.7UF
4.7uF
C1, C3
1
10UF/5V
10uF/5V
C2
6
10UF
10uF
C4, C12, C13, C14, C16, C17
2
12PF
12pF
C8, C18
3
0.1UF
0.1uF
C11, C15, C56
21
100NF
100nF
C19, C20, C35, C38, C39, C40, C41, C42 +13
1
0.8PF
0.8pF
C21
1
100NF/NC
100nF/NC
C36
1
1UF
1uF
C37
1
1.5PF
1.5pF
C57
2
4K7
R1, R2
2
5K1
R3, R4
2
100K
100k
R5, R12
1
46.4K
R6
1
1.18K
1.18k
R7
4
1K
R10, R11, R15, R17
2
100
R13, R16
1
1.13K
1.13k
R14

Sudi keyboard design files

The KiCad project lives in the ahsanu123/sudi-keyboard repository on GitHub; these links point at the commit this page was built from.

Sudi keyboard: common questions

What microcontroller does the Sudi keyboard use?

The Sudi keyboard is built around the NRF52832-QFXX, from the Nordic nRF family.

How big is the Sudi keyboard PCB?

The Sudi keyboard measures 123.4 × 99.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Sudi keyboard?

134 components, from 45 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 Sudi keyboard design files?

From the ahsanu123/sudi-keyboard 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 Sudi keyboard design in my own project?

Yes, under the terms of its MIT license, which ahsanu123 chose for the repository.

Can I test firmware for the Sudi keyboard without the hardware?

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

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