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Wafer keyboard v3

oleksandrmaslov·wafer-zmk-config·pcb/wafer_keyboard_v3.kicad_pcb

Wafer keyboard v3 PCB layout, top view — open source board by oleksandrmaslov

About the Wafer keyboard v3 PCB

Wafer keyboard v3 is an open source PCB design by oleksandrmaslov, published on GitHub under the MIT license. It is a 6-layer board measuring 126.8 × 93.1 mm, with 122 components from 24 distinct parts.

Other key parts include the ISP1807-LR-RS, C94372 and C7501206. By type, the board carries 40 switches, 40 diodes, 18 capacitors, 10 resistors, 6 ICs and 4 connectors.

It belongs with the keyboards, robotics & motion and displays & leds designs in this gallery.

From the project

Wafer is the custom, ultra-thin mechanical keyboard built on nrf52840, with full NPM1300 integration and (custom spring) PG1316s switches. Built on ultra-efficient Zephyr and ZMK, has an integrated Memory-In-Pixel display, covered in a full CNC milled aluminum case, with only 4-8mm thin.

Wafer is a 36 key ultra-thin split keyboard that stays between 4–8 mm thick. It runs on an ISP1807 with an NPM1300 PMIC, and the full aluminium case snaps together with magnets for a clean profile. Runs ZMK for ultra-low-power

Default layout is shown above; layers and firmware live in this repo.

Here you could find the PCB and production files for the Wafer. There are two versions, with mousebites and ready for production and without them.

Wafer keyboard v3, from the project README
From the project README

Main components on the Wafer keyboard v3

ISP1807-LR-RSC94372C7501206

Wafer keyboard v3 bill of materials (BOM)

122 components, 24 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
ISP1807-LR-RS
U1, U6
2
C94372
ESDR0502NMUTAG
U2, U4
2
C7501206
nPM1300-QEXX
U3, U5
2
C168688
USB_C_Receptacle_USB2.0
J1, J4
2
nice!view
J3, J6
2
Conn_01x02
Batt1, Batt2
36
Keyswitch
S1, S2, S3, S4, S5, S6, S7, S8 +28
2
C963197
Reset
SW2, SW5
2
C79174
Soft-off switch
SW3, SW6
36
C466653
Diode
D1, D2, D3, D4, D5, D6, D7, D8 +28
2
C364554
RED
D19, D39
2
C364550
BLUE
D20, D40
2
MLZ2012A2R2WT000
2.2uH
L1, L2
2
C49062
100nF
C1, C12
4
C1691
10uF
C2, C3, C13, C14
4
C14445
1uF
C4, C6, C15, C16
2
CC0603KRX7R5BB105
10uF
C7, C18
2
CC0603KRX7R5BB105
1uF
C8, C19
2
CC0603KRX7R5BB105
2.2uF
C9, C20
2
C368809
4.7uF
C10, C22
Show 4 more
QtyPartRefs
2
C25867
1.5k
R1, R4
2
C143981
150k
R2, R9
2
C114759
1.5k
R3, R10
4
C100126
10k
R5, R6, R7, R8

Wafer keyboard v3 design files

The KiCad project lives in the oleksandrmaslov/wafer-zmk-config repository on GitHub; these links point at the commit this page was built from.

Wafer keyboard v3: common questions

How big is the Wafer keyboard v3 PCB?

The Wafer keyboard v3 measures 126.8 × 93.1 mm, has 6 copper layers and is 1.6 mm thick.

How many components are on the Wafer keyboard v3?

122 components, from 24 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 Wafer keyboard v3 design files?

From the oleksandrmaslov/wafer-zmk-config 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 Wafer keyboard v3 design in my own project?

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

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