add motor controller to bill of materials

[challenge-bot] / bill-of-materials.rkt

diff --git a/bill-of-materials.rkt b/bill-of-materials.rkt
index a5af0342e4afe6a00737e9a70eae6b8cdf85e6eb..4f3b74a4bdf4700bbc29a3ecacd91f8a0fb9e0c7 100755 (executable)
--- a/bill-of-materials.rkt
+++ b/bill-of-materials.rkt
@@ -26,7 +26,7 @@
          (string-append
           "http://www.officedepot.com/"
           "a/products/495242/Scotch-Permanent-Double-Sided-Foam-Tape/"))
-   (item "#4-40 Phillips 1/2 inch flat-head screws"
+   (item "#4-40 Phillips 1 1/4 inch flat-head screws"
          3 .1 1 "home depot, lowes")
    (item "#4-40 hex nuts"
          6 .1 1 "home depot, lowes")
@@ -39,7 +39,10 @@
    (item "Green LEDs"
          2 .1 1 "evil mad science?")
    (item "330 Ohm Resistors"
-         6 .1 1 "evil mad science?")))
+         6 .1 1 "evil mad science?")
+   (item "motor controller"
+         1 (/ 5.2 5) 10 (string-append "http://www.ebay.com/"
+                                       "itm/like/180976411359?lpid=82"))))
 
 (define total-cost
   (apply + (for/list ([thing bill-of-materials])