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141 lines
3.3 KiB
Markdown
141 lines
3.3 KiB
Markdown
# Gboard Yunomi version
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This contains programs, schematics and board layouts for Gboard Yunomi version,
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which was released on **Oct 1, 2021**.
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This is not an officially supported Google product.
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## Contents
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The directory structure is as follows:
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- firmware/ : Arduino sketch.
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- board/ : KiCad schematics and PCB layouts.
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- jig.stl : A jig for building the keyboards.
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- ../third_party/mozc-yunomi/keyswitches.pretty : Footprint data for the key
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switches.
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## Building Gboard Yunomi Version
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**We also have the Pro Micro version of the device, which is easier to build. Please refer to [the Pro Micro README](./README_promicro.md) if you want to build one with Pro Micro.**
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### Parts
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- Kailh choc key x60
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- Diode (1N4148) x60
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- ATMega32U4-AU (QFP)
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- Resistor 10kOhm
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- Resistor 22Ohm x2
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- Capacitor 0.1uF
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- Capacitor 1uF x2
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- Capacitor 22pF x2
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- Crystal 16MHz (HC-49)
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- USB-C connector breakout (4pin)
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### PCBs
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We need two types of PCBs to build this project.
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#### Key-PCB
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File location: board/key
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Shape: Rectangular.
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Components: Diodes and key switches.
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Number of PCBs required: 12
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#### Base-PCB:
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File location: board/base
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Shape: Dodecagonal
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Component2: ATMega32u4.
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### Steps to build
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#### Step 1
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Solder diodes D1 to D5 onto the twelve Key-PCBs at the silk-screened locations.
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*IMPORTANT:* Diodes on six of the Key-PCB should be placed in the opposite
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direction.
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For six of the PCBs, we can solder diodes as indicated by the silk-screen. For
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the other six PCBs, we need to solder the diodes in the opposite direction.
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#### Step 2
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Solder key-switches to each Key-PCB. Note that the diodes need to be placed on
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the opposite side of the Key-PCB to the key-switches, as shown by the
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silk-screen.
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#### Step 3
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Create a cylindrical shape by combining the 12 Key-PCBs.
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There are six connection points between each pair of Key-PCBs. Connect adjacent
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pairs of boards by soldering the tin-plated wires (see the picture).
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However, only connect J11 and J12 between the first and last Key-PCB, instead of
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all six locations.
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If you have a 3D printer, you may print and use jig.stl to help with this step.
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#### Step 4
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Solder all parts for Base-PCB.
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#### Step 5
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Connect Base-PCB to the cylinder made in Step 3.
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#### Step 6
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Install the
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[Arduino caterina bootloader](https://github.com/arduino/ArduinoCore-avr/blob/master/bootloaders/caterina/Caterina-Leonardo.hex)
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using AVRISP or other ISP tool.
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#### Step 7
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Install firmware using the Arduino IDE.
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#### Step 8
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Connect the keyboard to a PC or other device that has Google Japanese
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Input/Gboard installed.
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## License
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```
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Licensed under the Apache License, Version 2.0 (the "License"); you may
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not use this file except in compliance with the License. You may obtain
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a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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```
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