Free Shipping TM1638 8 Bits LED Digital Tube Module Keyboard Scan and Key Display Module For Arduino
Function Introductios
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Only need 3-wire control.
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Adapts TM1638 digital tube drive chip.
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Common anode LED digital tube.
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Only need three common IO and could drive, no need MCU scan, save MCU sources.
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With 8 8digital tube (including decimal point).
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16 buttons.
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Support 8 degree brightness adjustment.