 For the Circuit Python Parsec today, I wanted to show you how you can create a brightness controller for any USB computer or mobile device. So here you can see I've got my phone plugged in, actually have our Discord up there. And if I want to adjust the brightness on this, of course you can find ways to do it in software but I want to use buttons. So here you can see I've got the buttons on a Circuit Playground Express controlling the brightness. And it is done simply through the consumer control command so there's nothing difficult about it and in fact if I took this and plugged it into a computer it would work exactly the same. No need to change the code. So how is this done? If you look at my code here you can see I'm importing USB HID and then the consumer control and consumer control code libraries. Then I've set my button A and B to be red that are built right into here. You can use any button given a microcontroller. And then here's what happens in the main loop. If the button up value, that means it's been pressed, then we're going to send consumer control code dot brightness increment. This is a standard. If I press the other button consumer control code dot brightness decrement and that's what makes it dimmer or brighter. I've also got a little bit of time delay in there as sort of a cheap version of debounce but you can use other types of code for that. And so that is how you can create a brightness controller using a circuit playground express inside of circuit python and that is your circuit python parsec.