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## Features
- **Microcontroller**: ESP8266 D1 Mini (WeMos)
## Info
- **Microcontroller**: ESP8266 D1 Mini (WeMos or clone)
- **Display**: SSD1306 OLED (128x64 resolution)
- **Input**: Three push buttons
- **Input**: Three or four push buttons
- **Sound**: Piezo buzzer for audio feedback
- **Power**: 14250 rechargeable battery with TP4056 charging module
- **Case**: 3D-printable design included in `/hardware` directory
- **Schematics**: and assembly instructions are also in the `/hardware` directory
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