4 digital display with adjustable brightness LED module clock Point Accessories Blocks for arduino<br><br><br>Product Description<br>Baby features:<br> <br>1. Using two 595-driven digital control  3-way need microcontroller IO port  displayed according to the digital dynamic scanning principle;<br>2. The wide operating voltage of 3.3V to 5V;<br>3.PCB board size: 71mm * 22mm<br>4. The digital model: 0.36 4 common anode<br><br>The module is a 12-foot clock with 4 points of positive digital (0.36 inches) display module driver IC TM1637  only two signal lines can make SCM four 8-segment LED. <br> <br>Module features are as follows: <br> <br> Display of male red for the four digital tube <br> <br> Adjustable digital tube 8 gray <br> <br> M2 screws positioning holes for easy installation<br> <br> <br>4 digital display interface module as shown below:<br><img src="//gdetail.image-gmkt.com/030/717423496/2016/4/deb608ac-9114-4b78-90d7-e145cfa06e6b.jpg"  width="771" height="534" onerror="this.src='http://gdetail.image-gmkt.com/030/717423496/2016/4/deb608ac-9114-4b78-90d7-e145cfa06e6b.jpg'; $(this).attr('onerror'，'');" ><br><br><br>Control Interface: A total of four pins (GND  VCC  DIO  CLK)  GND to ground  VCC is the power supply  DIO of data input and output pin  CLK is the clock signal pin; <br> <br>Digital tube: 4 common anode score points with 0.36 inches LED  red highlights; <br> <br>Positioning holes: 4 M2 screws positioning hole diameter is 2.2mm  the positioning of the module is easy to install  to achieve inter-module combination;<br><br><br><img src="//gdetail.image-gmkt.com/030/717423496/2016/4/d4a2d8ae-738b-46b5-a1f4-cac0a0808355.jpg"  onerror="this.src='http://gdetail.image-gmkt.com/030/717423496/2016/4/d4a2d8ae-738b-46b5-a1f4-cac0a0808355.jpg'; $(this).attr('onerror'，'');" ><br><br>Packaging Details<br>Unit Type: piece Package Weight: 0.015kg (0.03lb.) Package Size: 10cm x 10cm x 10cm (3.94in x 3.94in x 3.94in)