[Ben Heck] published an fascinating one-off job he developed lots of months ago. video game designer Infinity Ward approached him to develop a big screen that suggested what buttons on a controller were being pressed. They were planning on utilizing it during player testing by recording the board as well as the screen at the exact same time. They might then compare the two to see if there was any type of disconnect between the players input as well as the onscreen action. Infinity Ward is the designer behind games like phone call of task 4.
[Ben] piggy-backed the switch connections as well as added an outside port. He utilized a pair of octal buffer ICs to replicate the signals as well as activate the LEDs. The whole board is powered by the exact same 3.3V line that’s utilized by accessories like the chat pad. The triggers have three LEDs each as well as are lit utilizing a resistor ladder. [Ben] comments that considering that this is a newer Xbox 360 controller, the active-low button plan makes it relatively simple to work with. There is a video of the board embedded below.