This emulate an USB mouse throught an attiny85 When pressing the button, you get five modes. Pressing immediatly swhitch to the next mode. Pressing after 3 seconds go to idle. You can use a custom circuit or the usb-attiny provided by digispark
The mouse does nothing. The led do a short blink evry 3s
Draw round on screen. This use a sin table for working faster The led will blink at 0.5 Hz, with 50% of dutty. This is useful for preventing computer sleeping
Provide a left click every 7s, without move. The led will do a short blink, every 1s. This may help if you want refresh a page or click next when installing a software.
Provide infinite and as quick as possible left click. The led will blink quickly with (1s on, 0.2s off) Use this mode if you cheat in video game, or if you have an application wich show the same button as the same place.
Open paint on enjoy. Led blink mediumly I didn't found any serious use case of this feature