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ErgoSNM v3 left

siderakb·ergo-snm-keyboard·ErgoSNM_Keyboard/rev3/left/ErgoSNM_v3_left.kicad_pcb

ErgoSNM v3 left PCB layout, top view — open source board by siderakb
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About the ErgoSNM v3 left PCB

ErgoSNM v3 left is an open source PCB design by siderakb, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 115.6 × 106.7 mm, with 84 components from 22 distinct parts.

Other key parts include the RT9013-33GB, TPS61220DCK and E73-2G4M08S1C. By type, the board carries 29 diodes, 8 capacitors, 5 connectors, 5 resistors, 3 ICs and 2 switches.

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

From the project

ErgoSNM is a split ergonomic keyboard integrated with trackball, wireless is in beta

ErgoSNM \- a split ergonomic keyboard integrated with a trackball, designed to encourage people to leave their mouse behind.

- 64 keys in total. - Left half 29 + 6 keys. - Right half 29 keys + trackball. - Cherry MX style switches, hot-swap available. - USB Type-C. - Column-staggered layout. - The trackball can replace all mouse operations, allowing your right hand to stay on the home row. - Cursor movement and scrolling. - With the Combos feature: - J+K performs the left click - K+L performs the right click - J+L performs the middle click.

ErgoSNM v3 left, from the project README
From the project README

Main components on the ErgoSNM v3 left

RT9013-33GBTPS61220DCKE73-2G4M08S1C

ErgoSNM v3 left bill of materials (BOM)

84 components, 22 distinct parts.

QtyPartRefs
1
RT9013-33GB
U1
1
TPS61220DCK
U2
1
E73-2G4M08S1C
U3
1
32.768kHz
Y1
1
USB_C_Receptacle_USB2.0
J1
1
Conn_01x02
J2
1
Conn_01x04
J3
1
Conn_01x08
J4
1
Conn_01x12
J5
1
500mA, 6V
F1
29
SW_Push_45deg
KEY1, KEY2, KEY3, KEY4, KEY5, KEY6, KEY7, KEY8 +21
1
SW_DPDT_x2
SW1
1
RESET
SW2
29
1N4148
D1, D2, D3, D4, D5, D6, D7, D8 +21
1
4.7uH
L1
2
1uF
C1, C2
4
10uF
C3, C4, C7, C8
2
12pF
C5, C6
2
5.1k
R1, R2
1
1.2M
R3
Show 2 more
QtyPartRefs
1
220k
R4
1
10k
R5

ErgoSNM v3 left design files

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

ErgoSNM v3 left: common questions

How big is the ErgoSNM v3 left PCB?

The ErgoSNM v3 left measures 115.6 × 106.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ErgoSNM v3 left?

84 components, from 22 distinct parts. The full bill of materials is listed on this page.

Where can I download the ErgoSNM v3 left design files?

From the siderakb/ergo-snm-keyboard repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the ErgoSNM v3 left design in my own project?

Yes, under the terms of its CERN-OHL-P-2.0 license, which siderakb chose for the repository.

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