To simulate a die, you need 7 LEDs (and 7 resistors). Because the ATtiny85 has only 4 outputs we need to wire up the LEDs in a cunning way.[br][br]First task: wire up the 7 LEDs with 4 buttons so that you can get all the dice numbers from 1 to 6 by pressing various combinations of the buttons. You should draw out your circuit diagram before you start putting it on the breadboard.[br]

When you have got that working, you can replace the 4 switches with 1 ATtiny85 chip and write a simple program to flash the 4 output pins at different rates to check that the circuit is correct.[br][br](use one of the buttons as an on/off button for the chip)[br][br]Then you can write a program to generate a random number between 1 and 6 and then light up the appropriate pins![br]

Once it's working, you may want to solder a permanent version onto [url=https://en.wikipedia.org/wiki/Veroboard]veroboard[/url] (first draw out your circuit and work out how to make it as small and efficient as possible!)