There are several modules using this TM1637 chip to form a 4 digit numerical display module. The module is a 12-foot clock with four common anode tube (0.36 inch) display module for driver IC TM1637, only two signal lines can make the MCU control four 7-segment digital tubes. Also thanks to the I2C Bus you can control it using only 2 wires, leaving more pins available on your MicroController to connect other things. It requires only two connections to control this TM1637 4 Bits Digital Tube LED Display Module. This 7 segment LED Display has 4 digits which are controlled by TM1637 Driver Chip. Though the data displayed is restricted by numbers still it allows users to display some characters too like A, B, C etc. The TM1637 4 Bits Digital Tube LED Display Module is an affordable solution for displaying the output data of your Arduino project.
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