This module can display 0123456789 or ABCDEFGHIJKLM... in upper / lower case and the whole alphabet. Also available color in YellowGreen and Red, Blue and White. LED control is done over I2C using the HT16K33 interface.

Change the I2C address from a backside A0, A1 or A2 solder jumper. Jumper is shorted with solder, that sets the address. A0 sets the lowest bit with a value of 1, A1 sets the middle bit with a value of 2 and A2 sets the high bit with a value of 4. The final address is 0x70 + A2 + A1 + A0. For example, if A2 is shorted and A0 is shorted, the address is 0x70 + 4 + 1 = 0x75. If only A1 is shorted, the address is 0x70 + 2 = 0x72

Feature:

• DC 5v but 3v will work and LED will be dimmer
  
• IIC Interface 
• 8-Digit 14 segment  Alpha-Numeric 0.54" LED
• 16-Step Software Dimming control   
• I2C address selectable 0x70(default all-open) to 0x77
  
• I2C bus pull high Disable or Enable(default ON)