The list of displayed metrics includes your credit balance, the number of times you hit the jackpot, and the number of times you won credits by any other means. These metrics are also output and may be viewed in the serial monitor if you connect your micro-controller to the monitor via the RX and TX pins using a USB cable.
Via the menu on the LCD it's also possible to view all of the metrics generated from the simulation. This is a critical function for testing the game. you select the auto mode option from the settings menu on the LCD screen and the game plays over and over again until you select the option again or 1 million plays have occurred. The most exciting feature is that the game can be played in 'auto' mode i.e. In addition to that you can also select 'Play' from the main menu. There is a lever/knife switch dedicated to 'spinning' the reels. Since there are six lines in the menu you have to scroll down using the 'navigate down' button to see the entire menu. The buttons use a fairly sophisticated de-bouncing algorithm that takes advantage of the micro-controller's external interrupt capability. The slot machine has several interesting features which are accessed via the 20 x 4 I2C capable LCD display using two navigation buttons and a select button.
