TM1638 3-Wire 16 Keys 8 Bits Keyboard Buttons Display Module Digital Tube Board Scan And Key LED Geekcreit for Arduino - products that work with official Arduino boards

Specifications: - Only need 3-wire control. - Adapts TM1638 digital tube drive chip. Common anode LED digital tube. - Only need three common IO and could drive, no need MCU scan, save MCU sources. - With 8 8digital tube (including decimal point). - 2*8 16 buttons. - Support 8 degree brightness adjustment. - Weight:34 g - Size:68mmx68mm Package Include: 1 x TM1638 16 Buttons Display Module