1. Introduction
The SayoDevice O3C is a compact, high-performance mini mechanical keyboard designed for precision and speed, particularly favored by rhythm game enthusiasts. It features advanced Rapid Trigger Hall effect magnetic switches, a multi-function rotary knob, and a customizable IPS color screen. This manual provides essential information for setting up, operating, customizing, and maintaining your SayoDevice O3C.
2. Product Features
- USB 2.0 High Speed connectivity with an 8000Hz polling rate for ultra-low latency.
- Customizable trigger stroke, with a minimum setting of 0.05mm.
- Supports Rapid Trigger functionality for instant key actuation and reset.
- Compatible with any magnetic pole and magnetic axis switches; calibration is a simple click process.
- 0.96-inch IPS color screen displays real-time information such as key travel, key counts, and customizable text.
- The first line of text on the main screen can be personalized (e.g., user ID).
- Multi-function rotary knob can be assigned to various actions, including volume control or scrolling.
- Hot-swappable switches for easy customization and replacement.
- MULTICOLOR backlight for enhanced aesthetics.
- Durable ABS plastic keycap material.
3. Specifications
| Attribute | Detail |
|---|---|
| Brand Name | BTXETUEL |
| Model | O3C SayoDevice OSU |
| Controller | CH32V307WCU6 @144MHZ |
| Memory | 128KB SRAM, 192KB+288KB Flash |
| Polling Rate | 8000Hz (USB 2.0 High Speed) |
| Display | 0.96-inch 160*80 IPS Color Screen |
| Inputs | 1x Encoder (Knob), 3x Keys |
| Switch Type | OUTEMU Pink Magnetic Switches (Hot-swappable) |
| Keycap Material | ABS Plastic |
| Keycap Printing | Laser |
| Backlight Type | MULTICOLOR |
| Interface Type | USB (Type-C cable included) |
| Operation Style | Mechanical |
| Keyboard Standard | Mini Keyboard |
| Application | Desktop, Laptop, Number, Tablet |
| Language | English |
| Origin | Mainland China |
| Certification | CE |
| Dimensions (Approx.) | Length: 15 cm, Width: 11 cm, Height: 4 cm |
| Weight (Approx.) | 0.161 kg |
Available Colors: White, Black, Pink
4. Package Contents
- 1 x SayoDevice O3C Mini Mechanical Keyboard
- 1 x Type-C USB Cable (approx. 2 meters / 6 feet)
5. Setup Guide
- Connect the Device: Plug the included Type-C USB cable into the USB-C port on the SayoDevice O3C and connect the other end to an available USB port on your computer (Desktop, Laptop, or Tablet).
- Automatic Recognition: The device is plug-and-play and should be automatically recognized by your operating system without requiring additional drivers.
- Initial Display: Upon connection, the 0.96-inch IPS screen will power on and display initial information, which may include the device version and key status.
6. Operation
6.1 Key Functions
The three mechanical keys are designed for rapid and precise input. By default, they may be mapped to common functions or specific actions for rhythm games. The 0.96-inch IPS screen provides visual feedback on key presses and other customizable information.
6.2 Knob Functions
The rotary knob offers versatile control. By default, it can control PC volume (rotate for volume up/down, press for mute). Through customization software, it can be assigned to various functions such as scrolling through lists, adjusting settings, or executing specific commands.
7. Customization
The SayoDevice O3C offers extensive customization options to tailor it to your specific needs. Customization is typically performed via dedicated software provided by the manufacturer or community tools.
7.1 Key Mapping and Rapid Trigger
- Key Assignment: Each of the three keys can be programmed to perform any keyboard function, macro, or shortcut.
- Trigger Stroke: Adjust the actuation point of the magnetic switches. The shortest possible trigger stroke is 0.05mm, allowing for extremely sensitive input.
- Rapid Trigger: Configure the Rapid Trigger feature to allow keys to re-actuate immediately upon release, without needing to return to the full reset point. This is crucial for fast-paced games.
- Magnetic Switch Calibration: The device supports various magnetic switches. Calibration is simplified to a single click within the software to ensure optimal performance.
7.2 Knob Customization
The rotary encoder can be re-programmed beyond its default volume control. You can assign it to scroll, zoom, switch applications, or execute custom macros. The knob also has a press function that can be customized.
7.3 Screen Customization
- Display Information: The 0.96-inch IPS screen can show various metrics like key travel, key press counts, and other real-time data.
- Custom Text: Personalize the first line of text on the main screen to display your name, a custom message, or any other desired identifier.
8. Maintenance
8.1 Cleaning
- Gently wipe the device with a soft, dry cloth.
- For stubborn dirt, slightly dampen the cloth with water or a mild, non-abrasive cleaner. Avoid excessive moisture.
- Do not use harsh chemicals or abrasive materials, as these can damage the finish or screen.
8.2 Switch Replacement (Hot-Swap)
The SayoDevice O3C features hot-swappable switches, allowing you to easily replace or change the magnetic switches without soldering.
- Carefully remove the keycap from the switch using a keycap puller.
- Use a switch puller to gently extract the switch from the PCB.
- Align the pins of the new switch with the sockets on the PCB and press firmly until it clicks into place. Ensure the switch is seated correctly.
- Replace the keycap.
9. Troubleshooting
- Device Not Recognized: Ensure the USB-C cable is securely connected to both the device and your computer. Try a different USB port or cable. Restart your computer.
- Keys Not Responding: Check if the switches are properly seated. If a specific key is failing, and replacing the switch does not resolve the issue, it might indicate a manufacturing defect with the device's PCB. Contact customer support for assistance.
- Knob Not Functioning: Verify that the knob is securely attached. If it's assigned to a custom function, ensure the customization software is running and the profile is active.
- Screen Not Displaying: Ensure the device is powered on and connected. If the screen remains blank, try reconnecting the device.
- Device Slides on Surface: The device is equipped with rubber feet to prevent slipping. Ensure these feet are clean and intact. Using a non-slip mat can also help.
10. User Tips
- The SayoDevice O3C is primarily designed for rhythm games like OSU! due to its rapid trigger and customizable keys.
- Utilize the hot-swappable feature to experiment with different magnetic switches to find your preferred feel and response.
- Take advantage of the customizable knob for quick access to frequently used functions, such as volume control or media playback.
- Regularly check for software updates from the manufacturer to ensure optimal performance and access to new features.
11. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the official BTXETUEL website or contact your retailer. Keep your proof of purchase for any warranty claims.
