[note ""])
(item description quantity unit-cost max-lead-days where-to-get note))
+;; TODO: add sonar sensor cable making supplies
;; TODO: add actual cost for screws, nuts, and other estimated parts
;; TODO: add male-female jump wires for connecting sonar sensors
;; TODO: add ball caster
;; this is the argument for the parameter 'quantity'.
;; this is the number of millimeters of orange wire
;; in a single robot kit.
- ;; there are 2 orange wires, one for each wire.
+ ;; there are 2 orange wires, one for each motor.
;; the 120 mm wire reaches to the far side of the
;; motor controller
(+ 120 90)