2021-04-17 15:22:45 +02:00
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# Build Guide
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This is the build guide for Corne Cherry v2.
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2021-05-15 11:20:11 +02:00
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[Click here for the Corne Cherry v3 build guide](
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2021-04-17 15:22:45 +02:00
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https://github.com/foostan/crkbd/blob/master/corne-cherry/doc/v3/buildguide_en.md).
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## Parts
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### Required
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2021-05-15 08:51:41 +02:00
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| Name | Count | Remarks |
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|:-|:-|:-|
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| PCB | 2 sheets | |
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| Top plate | 2 sheets | |
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| Bottom plate | 2 sheets | PCB type and acrylic type can be selected |
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| ProMicro protective plate | 2 sheets | |
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| ProMicro | 2 sheets | |
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| TRRS jack | 2 | |
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| Tact switch | 2 | |
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| Diodes | 42 | Only chip parts |
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| Kailh PCB Sockets | 42 | |
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| Key switches | 42 | Only compatible with CherryMX |
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| Keycaps | 42 pcs | 1u 40 pcs, 1.5u 2 pcs |
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| OLED module | 2 sheets | |
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| 4 pin headers | 2 | |
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| 4 pin sockets | 2 | |
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| Spacer M2 7.5mm | 10 pieces | |
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| Spacer M2 9mm | 4 pieces | |
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| Screw M2 4mm | 28 screws | |
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| Cushion rubber | 8 pieces | |
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| TRS (3-pole) cable | 1 | TRRS (4-pole) cable is also acceptable |
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| Micro USB cable | 1 | |
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2021-05-15 08:52:32 +02:00
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### Optional
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2021-04-17 15:22:45 +02:00
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2021-05-15 08:51:41 +02:00
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| Name | Count | Remarks |
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|:-|:-|:-|
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| SK6812MINI | 54 pcs | Upward mounting 42 pcs, Downward mounting 12 pcs |
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## Advance preparation
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If you build the firmware yourself,
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it takes time to prepare the environment,
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so it is recommended to start first. \
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2021-05-15 08:53:02 +02:00
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See <https://github.com/foostan/crkbd/blob/master/doc/firmware_en.md>
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for more information.
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2021-04-17 15:22:45 +02:00
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## Implementation
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The PCB is reversible, so first decide which one to use,
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left or right.
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2021-05-15 08:52:32 +02:00
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### Diodes
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Solder the diode of the chip part.
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You can attach it to either side, but in this build guide,
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we will attach it to the back side.
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When using [Tilting / Tenting plate](
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https://github.com/foostan/crkbd/blob/master/corne-cherry/doc/buildguide_tilting_tenting_plate_en.md),
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be sure to attach it to the back side \_\_.
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Since the chip parts are very small,
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it is easier to work with tweezers and counter-acting tweezers.
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**The diode is installed in a fixed direction **,
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so if you arrange the diode in the same row and row as shown in the photo below,
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it will proceed smoothly.
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The orientation of the diode is as follows:
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Install so that the "|||" mark on the chip part faces the "|" of the diode mark "|◁".
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The trick is to attach the chip parts, but first, as a spare solder,
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put the solder only on the right side of the pad.
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Next, solder one leg of the diode so that the spare solder melts.
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At this time, it is recommended to use reverse-action tweezers,
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because you can hold the chip parts firmly without exerting force
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and you can concentrate on alignment and soldering.
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Also, if the soldering iron is too hot or the solder is touched too much,
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the flux contained in the solder may evaporate and form a clean pile of solder,
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but it can be repaired later,
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so at this point you should only care about attaching parts.
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It's okay.
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It is okay if the diode does not float when viewed from the side
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when one foot is attached.
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If it floats, press the diode with tweezers or your fingers
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and reheat the soldered part with a soldering iron to clean it.
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Then solder the other one.
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Be careful not to apply too much,
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as a small amount of solder is sufficient.
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If you apply too much, you can remove it with a blotting wire
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or by scooping it with a soldering iron.
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If the amount of solder on the preliminary solder side is small,
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additional soldering is performed, and if it is a mountain,
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apply flux from above and heat it to clean it.
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### TRRS jack, reset switch
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Solder the TRRS jack and reset switch to the surface of the PCB
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as shown in the picture below.
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In this build guide, the diode is attached to the back side,
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so it is the opposite side.
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### Jumpers and pin sockets for OLED modules
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When using the OLED module, jumper as shown below.
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Please note that **only the surface should be jumpered**.
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Solder the pin socket to the same surface.
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If the jumper doesn't work, the amount of solder is probably too low
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or the flux in the solder has vaporized.
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In that case, you can fix a jumper by using a large amount of solder
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or applying a separate flux.
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### ProMicro
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Solder the pin header so that it fits into the white frame,
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and then solder it with the back side of the Pro Micro facing up.
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2021-05-15 11:20:11 +02:00
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If you want to use spring-loaded pin headers,
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please refer to the [Helix Build Guide](
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https://github.com/MakotoKurauchi/helix/blob/master/Doc/buildguide_en.md#pro-micro).
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### OLED module
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Insert the pin header into the pin socket for OLED first,
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and then solder the pin header and OLED module.
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At this time, the OLED module is easy to float,
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so be careful not to float it while pressing it with your finger.
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### Operation check
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It is recommended to check the operation when ProMicro and OLED module are attached
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(it will be difficult to isolate the problem if you do it at the very end).
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To check the operation, first insert the firmware for crkbd into ProMicro
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by referring to the "Firmware" chapter below (be sure to insert it on both sides).
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2021-05-15 11:20:11 +02:00
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To check the operation,
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connect the left hand side to the PC with MicroUSB,
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and connect the left hand side and the right hand side with the TRS cable.
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Since there may be defects such as jacks,
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be sure to connect the left and right instead of one by one
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before checking the operation.
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If it is done correctly so far,
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if you short the pad to attach the PCB socket with tweezers etc.,
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the key pressed on the OLED module will be displayed.
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### Kailh PCB Socket
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Fill the pads on both sides of the back with solder.
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It is difficult to add it later, so please add more in advance.
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Insert the socket and attach it by melting the solder you have.
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At this time, hold it down with tweezers or your fingers
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so that the socket does not float.
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Soldering is now complete.
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If you want to add an LED as an option,
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refer to the "LED" chapter below
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(it can be attached even after installing the socket).
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### Plates, switches
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First, insert the switch into the top plate.
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It's okay to do it later, but it's easier to put it in first,
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because it's necessary to insert the switch from a little bit.
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Finally, attach the spacers with screws so that the top plate, PCB,
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and bottom plate are in that order,
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and attach the cushion rubber to the four corners to complete the process.
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## Firmware
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Write the firmware to ProMicro by referring to the following. \
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<https://github.com/foostan/crkbd/blob/master/doc/firmware_en.md>
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## LED (optional)
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I will install the SK6812 MINI.
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The SK6812MINI is extremely heat sensitive and breaks easily.
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We recommend using a soldering iron with a temperature control function
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and working at a temperature of 220°C to 270°C.
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Even if the temperature is adjusted,
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it will be damaged if the iron is applied to the LED for a long time,
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so try to solder as quickly as possible.
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The LEDs are soldered four by four,
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but it is recommended that you do not do four at a time,
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but two at a time to prevent the LED temperature from rising,
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as it will be less likely to break.
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First, check the mounting position.
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Solder 1 to 6 so that the back side (Undergrow) shines,
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and 7 to 27 so that the front side (Backlight) shines.
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Below is the position to install the LED.
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Solder 1 to 6 so that the black part circled as shown below is on the bottom
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and the silk mark indicated by the arrow is on the top.
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Please note that the orientation changes between 1 ~ 3 and 4 ~ 5.
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Solder 7 to 27 so that the largest pad circled
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and the silk mark indicated by the arrow are adjacent to each other,
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as shown below.
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If everything can be soldered normally, it will shine as shown below.
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If it shines only halfway, the LEDs are connected in numerical order,
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so suspect that the LED that does not shine
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or the LED in front of it is soldered incorrectly or that the LED is damaged.
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That's all there is to it.
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