Datasheet

If you want a decimal point, call writeDigitNum(

location

number

, true) which will paint the decimal point. To draw the

colon, use drawColon(

true or false

)

If you want full control of the segments in all digits, you can call writeDigitRaw(

location

bitmask

) to draw a raw 8-bit

mask (as stored in a uint8_t) to anylocation.

All the drawing routines only change the display memory kept by the Arduino. Don't forget to call writeDisplay() after

drawing to 'save' the memory out to the matrix via I2C.

There are also a few small routines that are special to the backpack:

setBrightness(

brighness

)- will let you change the overall brightness of the entire display. 0 is least bright, 15 is

brightest and is what is initialized by the display when you start

blinkRate(

rate

) - You can blink the entire display. 0 is no blinking. 1, 2 or 3 is for display blinking.