Talk:Wiimote/Extension Controllers/uDraw GameTablet
The source for the data format is my own experimentation with the tablet. It's similar to what's reported in the Wiimote/Extension_Controllers/Drawsome_Tablet, but I think that article currently displays the incorrect format for that specific extension as the source is a project that interfaces with the uDraw GameTablet. This is why I created a separate article for this extension controller.
I initially made the same assumption that pressure is an 8-bit value and the nib has its own flag as a button, but when trying to figure out which pressure value made it swap from 0 (unpressed) to 1 (pressed) I saw that the pressure value counted up from 8~255, the bit flipped and then pressure looped back around to count up from 0~247. Bit 2 of byte 5 is therefore the ninth bit of the pressure value, not a separate button flag (though it can be used as one, and it explains why it's inverted compared to the other two button flags).