Datasheet

Wiring!

Nex up, let's wire it up to an Arduino. We'll be using an Arduino.

Connect CLK to the I2C clock - on Arduino UNO thats Analog #5, on the Leonardo it's Digital #3, on the Mega it's

digital #21

Connect DAT to the I2C data - on Arduino UNO thats Analog #4, on the Leonardo it's Digital #2, on the Mega it's

digital #20

Connect GND to common ground

Connect VCC+ to power - 5V is best but 3V will work if that's all you've got (it will be dimmer)

Connect Vi2c to your microcontroller's logic level (3-5V) - If you're using an Arduino, this is almost certainly 5V. If

its a 3V Arduino such as a Due, connect it to 3V

Both Vi2c and Vcc MUST be connected to 3 to 5VDC! Vcc is for the LED driver power, Vi2c is what sets the logic level

for communication to the chip.

Load Demo

Restart the Arduino IDE and load up the File->Adafruit_LEDBackpack->quadalphanum demo