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# Build Guide
This is the build guide for Corne Cherry v4.

## Parts
### Required
| Name | Count | Remarks |
|:---------------------|:--------|:--------------------------------------------------------------------------------------------|
| PCB | 1 set | |
| Case | 1 set | |
| Switch plate | 1 set | FR4 1.6mm thick |
| Key switches | 42 - 46 | Only Cherry MX compatible |
| Keycaps | 42 - 46 | 1u 40 pcs, 1.5u 2 pcs |
| Spacer M2 | 8 | 7.5 mm For Case assembly |
| Screw M2 | 16 | 5 mm For Case assembly |
| Rubber cushion | 8 | |
| TRRS (4 poles) cable | 1 | v4.0.0: TRS (3 poles) cable is not compatible<br/>v4.1.0: TRS (3 poles) cable is compatible |
| Type-C cable | 1 | |
### Optional
| Name | Count | Remarks |
|:---------------|:-------------|:----------------------------------------------|
| Rotary Encoder | 0 - 4 pieces | compatible product of the rotary encoder EC12 |
## Firmware preparation
please see [docs/firmware/rev4](../../firmware/rev4/firmware_en.md).
## Build
This is the build guide for the left hand side. The right side is the same procedure.
### 1: Attach switches to PCB


### Option: Solder rotary encoders instead of switches
If a rotary encoder is used, it can be attached instead of a switch at the position shown in the figure below. In that case, soldering from the back side is required.

### 2: Attach spacers to Case

### 3: Mount 1 to 2

### 4: Attach rubber cushions

### 5: Attach keycaps
