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Assembled Adafruit 0.56 4-Digit 7-Segment Display [w/ I2C Backpack QT - Yellow] : ID 5602 : $13.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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0.36 Inch 4-Digit LED Digital Tube Display Module DC 3.3V-5.5V 4Bits Adjustable Brightness LED Display Board - LED Display Module - Arduino, Robotics, Raspberry Pi, ESP8266, Learning DIY, Development board ICStation
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Amazon.com: Stemedu 5PCS 8-Digit 7 Segment MAX7219 Digital Segment Module, Seven Section 8 Bit LED Display Tube for Ar-duino MCU/51/AVR/STM32 for Raspberry Pi ESP8266 Nodemcu : Industrial & Scientific
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Amazon.com: Treedix 0.56" 3-Digit 7-Segment Display Common Cathode 3-Digit LED Display Digital Tube Compatible with Arduino (Blue, 5pcs) : Industrial & Scientific
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diymore MAX7219 8 Digit LED Tube Display Control Module for Arduino 3.3V 5V Microcontroller Serial Driver 7-segment - AliExpress
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