HardLabs

ErgoSNM Keyboard Left Prototype 1

siderakb·ergo-snm-keyboard·ErgoSNM_Keyboard/prototype/left_prototype_1/ErgoSNM_Keyboard_Left_Prototype_1.kicad_pcb

ErgoSNM Keyboard Left Prototype 1 PCB layout, top view — open source Nordic nRF board by siderakb

About the ErgoSNM Keyboard Left Prototype 1 PCB

ErgoSNM Keyboard Left Prototype 1 is an open source Nordic nRF PCB design by siderakb, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 140 × 88 mm, with 67 components from 44 distinct parts.

Its main chip is the nRF51822_Core_board, from the Nordic nRF family. Other key parts include the TP4057. By type, the board carries 25 diodes, 5 connectors, 3 modules, 2 switches, 2 capacitors and 2 resistors.

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 Keyboard Left Prototype 1, from the project README
From the project README

Main components on the ErgoSNM Keyboard Left Prototype 1

TP4057

ErgoSNM Keyboard Left Prototype 1 bill of materials (BOM)

67 components, 44 distinct parts.

QtyPartRefs
1
TP4057
U1
1
nRF51822_Core_board
M1
1
Pro_Micro
M2
1
Adafruit_Bluefruit_LE_SPI_Friend
M3
1
Conn_01x02
J1
1
Conn_01x02
J2
1
Conn_01x02
J3
1
Conn_01x06
J4
1
Conn_01x05
J5
1
Jumper_2_Bridged
JP1
1
00
KEY1
1
01
KEY2
1
02
KEY3
1
03
KEY4
1
04
KEY5
1
05
KEY6
1
10
KEY7
1
11
KEY8
1
12
KEY9
1
13
KEY10
Show 24 more
QtyPartRefs
1
14
KEY11
1
15
KEY12
1
20
KEY13
1
21
KEY14
1
22
KEY15
1
23
KEY16
1
24
KEY17
1
25
KEY18
1
30
KEY19
1
31
KEY20
1
32
KEY21
1
33
KEY22
1
34
KEY23
1
35
KEY24
1
SW_Push
SW1
1
SW_2P3T
SW2
1
Conn_01x04
SWD1
1
PJ-393_TRRS_8P
TRRS1
24
1N4148
D1, D2, D3, D4, D5, D6, D7, D8 +16
1
1N5819
D25
1
10uF
C1
1
1uF
C2
1
4.7k
R1
1
10k
R2

ErgoSNM Keyboard Left Prototype 1 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 Keyboard Left Prototype 1: common questions

What microcontroller does the ErgoSNM Keyboard Left Prototype 1 use?

The ErgoSNM Keyboard Left Prototype 1 is built around the nRF51822_Core_board, from the Nordic nRF family.

How big is the ErgoSNM Keyboard Left Prototype 1 PCB?

The ErgoSNM Keyboard Left Prototype 1 measures 140 × 88 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ErgoSNM Keyboard Left Prototype 1?

67 components, from 44 distinct parts. The full bill of materials is listed on this page.

Where can I download the ErgoSNM Keyboard Left Prototype 1 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 Keyboard Left Prototype 1 design in my own project?

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

Can I test firmware for the ErgoSNM Keyboard Left Prototype 1 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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