An application is defined IOIO-Q signal Notebook audio speakers, music and piano driven society. By pressing the keyboard image. Then it will be IOIO-Q oscillator frequency and pulse width of the key differences between them. And driving piano solo speaker to hear.
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![IOIO-Q RGB LED [CA] icon](https://apprecs.org/gp/img/icons/webp/150/app.inex.ioio.pwm.commonanodergbled/UOPM06YFj8chmgAwl-KnELwcdwJdYUuegBc2q5-N6o0-icon "IOIO-Q RGB LED [CA]"){kind=icon}
![BlueStick Control [Phone] icon](https://apprecs.org/gp/img/icons/webp/150/com.inex.BlueStickControl/mhQi9ze_Fgr_40jc6kSjYacKxtW7C-WZIca3Z-LFqjQ-icon "BlueStick Control [Phone]"){kind=icon}