3pcs 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

Description

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: 3 x TM1638 16 Buttons Display Module