(define todo
;; list of specific things to do for challenge-bot class
(list
+ "Separate openscad into drawing and data files"
+ (list "programming guide to the challenge"
+ (list
+ "experiments and self test 2 page 4 of 15"
+ "code is incomplete, needs int led = 13 and setup() too")
+ "code in programming guide hard to read, make bigger")
"make challenge for blinking based on how far away hand is"
"get gyroscopes"
"change turnaround to spin_left and spin_right"
"remove \"forward_speed\" and \"stop_speed\" from g_follow"
"video should show motor doesn't react to hand for left motor"
"make a case for the 9v and 6v battery holders"
+ "make new stickers from new qr code"
(string-append "order these: http://www.ebay.com/itm/"
"100-x-Ultrasonic-Module-HC-SR04-Distance-Measuring"
"-Transducer-Sensor-for-Arduino-/"
(define ideas
(list
+ "make the robots talk to each other"
+ "have one robot load its program to another"
(list "from 0 to movement faster"
"hook motor directly to battery"
(string-append "solder wires to motors, attach motors,"