I am making a custom mouse using an arduino uno r3, and I am trying to use the mouse library, but it is not working.
I tried the code from the website, and it still won't work. Is there a solution or alternative?
The Mouse library is for boards with native USB support only - such as Arduino Pro Micro or Arduino Leonardo. The library is incompatible with Uno R3.
Sadly PJRC quit making Teensy 2 and 2++ (8K RAM, more pins) both with USB, out and supported before the Micro was out --- people hacked Uno U2 chips to DIY USB modes. PJRC wrote the USB code.
It's alll AMD with them, extra-compact high-end boards, one or two with FPU in-chip as well as USB.
Remember the Mega ADK that Hosted USB? That's cookin!