Nice project, schematic and code included!

With an attiny13A, an IR motion sensor, and a candy Mario Brothers mushroom tin, this project turns them into a USB powered IR sensor that also blinks and sings. This is a variation of the marioman project but unlike that one this *this* is practical

Here are the features:

• The container for the project is a metal Super Mario Bro candy tin
• Electronics are powered by a USB cable (for 5v)
• An external, attached, IR sensor is used to detect motion which triggers the LED and musical sequence.
• The attiny13A is programmed to blink on and off first for a set duration, then jump into the musical sequence.
• The LEDs blink to the tune of super mario brothers
• The speaker can be shut off by a switch attached to the speaker