Schematic for the Wacom EC-155 tablet mouse
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README.md
ec155-nearfield-cache.lib Initial checkin Aug 3, 2016
ec155-nearfield.sch Initial checkin Aug 3, 2016
ec155-quadrature-cache.lib Initial checkin Aug 3, 2016
ec155-quadrature.sch
ec155-sensors-cache.lib
ec155-sensors.sch Initial checkin Aug 3, 2016
pcb-bottom-side.jpeg Initial checkin Aug 3, 2016
pcb-composite.jpeg Initial checkin Aug 3, 2016
pcb-top-side.jpeg
wacom-mouse-cache.lib
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wacom-mouse.kicad_pcb Initial checkin Aug 3, 2016
wacom-mouse.pro
wacom-mouse.sch

README.md

Wacom EC-155 Schematic

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: