Item Tag: TM1638 16 Keys

Description 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). 16 buttons. Support 8 degree brightness adjustment. Package Included: 1 x TM1638 LED Display 8Bit Digital Tube Module 16 Keys Keyboard for Arduino DIY 1 x 5p Dupont Wire (Female to female) Instructions/schematic are NOT included. We don't provide technical assistance please make sure that you are familiar with the product before purchasing.