Todo list

The master todo list. When you notice tasks that should be done eventually, add them here. We can split this list up if it gets too long.

• Figure out whether the absolute position of the encoder is drifting. Every loop, if the index position (channel Z value) has changed, print out the REG_TC0_CV1 value. This should be equal to x_offset, as calculated during front wheel calibration. If it isn't, then the absolute position of the encoder is drifting, which needs to be fixed. If not, we're fine.
• Add the cylindrical shell back to the front motor column to reduce stress on the screws
• Make a new header file (potential name: bike_pins.h) that has many #define statements for standard pin names
• Extract ROS code to a new compilation unit
• Modify the Pi's wifi configuration to use eduroam/RedRover/etc (or maybe an ad-hoc network hosted by the laptop) instead of LocomotionLab
• Connect some random pin from the PCB to PWML on the front motor control board, so that the front wheel won't spin rapidly when we reset the Due