This will be my first real AVR project and I'm pretty excited to start it. Just need some suggestions first.
My church asked me to make a sign or display that they can put up on a wall. The sign will display a number that can be programmed via keypad or something that will turn on at request. The idea is to secure the nursery and children's school. They are making a new policy where you are assigned a token when you drop your child off that signifies you are their parent. When you pick up your child you need to present the token to teacher. This is the same sort of thing they do at birthday party events.
The deal for the sign is when a child is acting up, the teacher can punch in a number and it would be displayed on a wall. Then the parents can see the number and come check on the kid. I was thinking 2 big 7-segment displays and a keypad interfaced to an AVR. Maybe a "clear" and a "set" button on the device to erase the numbers on the big display. I am not sure if they make large 7-segment displays..maybe there is some sort of dual digit LED sign I can use instead. Thanks for any feedback.