;; TODO: add 3d printer filament cost for wheel, sonar sensor holders,
;; caster standoff
;; TODO: add ball caster
-;; TODO: add 9v battery holder and 9v battery
;; TODO: checkout the following, if it's not a fraud, buy for next class
;;; (string-append
;;; "http://www.ebay.com/itm/UNO-R3-Development-Board-MEGA328P-"
(string-append
"http://www.jameco.com/webapp/wcs/stores/servlet/Product"
"_10001_10001_36792_-1"))
- (make-item "4xAA battery"
+ (make-item "9v battery"
+ 1 (/ 9.99 5) 1
+ "http://www.frys.com/product/5234117"
+ "can get in store")
+ (make-item "9v battery holder"
+ 1 (/ 1.25 10) 1
+ (string-append
+ "http://www.jameco.com/webapp/wcs/stores/servlet/Product"
+ "_10001_10001_2128067_-1")
+ "can get in store")
+ (make-item "AA battery"
4 (/ 17.99 100) 1
"http://www.frys.com/product/6292850"
"can get in store")