gg2inc

vendapin.comPart number is shown in the parts listing at the end of the how to document listed under card dispenser.

If the clock circuit is not wired up and working the display will probably not show anything. The backlight on / off button may work but not 100% positive. Make sure you have the real time clock circuit working correctly. I am pretty sure that is your problem since the demo program from Adafruit works.

No problem, the only difference is the display is blue and not rgb do you cannot select a color

Just curious, what did you have to do to avoid multiple definition issue?

It was before version 1.6.9. Search google for "Arduino first defined here" and you see several potential solutiuons.

I can have the flashing happen on the hour instead of the minute. I will try to get something to you within the week.

I added an "Alternate Display' Arduino file that will show the minutes like you asked for. The seconds are turned off unless you remove the comment '//' from line 181.