(define todo
;; list of specific things to do for challenge-bot class
(list
+ "video should show motor doesn't react to hand for left motor"
+ "put a notch on the corner of the sonar to make it easier to push in"
"make a case for the 9v and 6v battery holders"
"determine if 9v or 6v battery holder can be disposed"
"get multimeter to determine which batteries are dead"