Here's the thing. This is for my old "baba" (grandmother) who is nearly blind. I figure that each digit will use one display, so I will need (of course) four of these displays.
I have a few questions:
1) How much hardware will I need altogether? I already have an Arduino Uno, and I am planning on including a Chronodot. I figure that this will be accurate enough for Baba, and I know the Daylight Saving Time rules so I can program them in. I mention this because I imagine that the clock will remain within a very few minutes of the correct time for the rest of Baba's lifespan, so once it is assembled, there is no need ever for her to set the time. The alarm, though, is another matter. She should have one big button (arcade style is good) to stop the alarm. Family will need to be able to set alarm times, so I figure this plus one "hidden" button in the back of the clock will suffice. (Hidden so she doesn't mess up the alarm by accident.) And of course, some kind of buzzer or bell will be necessary (a mechanical bell would be perfect, I feel, but is not necessary).
2) How much juice will this thing need? Assume we have maximum display brightness, just in case she needs it that bright.
3) Assume I have the displays in "portrait" orientation. How will I program in my font? I mean, if I have something like this:
Code: Select all
@@@@............
@@@@............
@@@@......@@@@..
@@@@......@@@@..
@@@@......@@@@..
@@@@......@@@@..
@@@@......@@@@..
@@@@......@@@@..
@@@@......@@@@..
@@@@......@@@@..
@@@@......@@@@..
@@@@......@@@@..
@@@@......@@@@..
@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@
..........@@@@..
..........@@@@..
..........@@@@..
..........@@@@..
..........@@@@..
..........@@@@..
..........@@@@..
..........@@@@..
what sequence of bytes (or would it be 16-bit integers, or what?) would I program in to display this?