Pre-development environment KEIL PT2258 6-channel volume control panel, each channel can be independently controlled, 0dB to-79dB attenuation electronic volume control can solve the ordinary mechanical potentiometer to adjust the volume when the noise is not independent channel control, integrated remote control complex , motor potentiometer difficult to control, difficult issues such as the secondary development of the main chip: STC89C52RC, PT2258, AT24C02 main functions: 2,6 1,6 channels simultaneously control 3-channel independent control, mute 4, when turn off the volume to restore the value LED display: 1, value 2 volume, mute information 3, channel information

PT2258音量板
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