Schematic for the Wacom EC-155 tablet mouse, packaged with the Bamboo Fun tablet. This looks like a normal 3-button wheel mouse, but electrically it's compatible with the Bamboo Fun's pen.
It's interesting to me because:
- I had one to take apart. Also, they're cheap on eBay.
- The design is all discrete 74xx logic!
- It seems like a good example circuit to teach and learn with.
Here's the good stuff:
And some support materials if need them:
