get cheaper 9v batteries from jameco

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

diff --git a/bill-of-materials.rkt b/bill-of-materials.rkt
index 7a87755a3997eaf4c67df0a4c862b0eb3540681a..c33c08bec7a86cc8ba40c266781061e70e040678 100755 (executable)
--- a/bill-of-materials.rkt
+++ b/bill-of-materials.rkt
@@ -155,8 +155,10 @@
                "http://www.jameco.com/webapp/wcs/stores/servlet/Product"
                "_10001_10001_36792_-1"))
    (make-item "9v battery"
-              1 (/ 9.99 5) 1
-              "http://www.frys.com/product/5234117"
+              1 1.29 1
+              (string-append
+               "https://www.jameco.com/webapp/wcs/stores/servlet/Product"
+               "_10001_10001_151095_-1")
               "can get in store")
    (make-item "9v battery holder"
               1 (/ 1.25 10) 1
@@ -184,7 +186,7 @@
               (string-append
                "can get in store.  unit cost goes down for large orders"
                ", see page for specifics."))
-   (make-item "Arduino(tm) board"
+   (make-item "Arduino(tm) Uno board"
               1 16.98 8
               (string-append
                "http://www.colorapples.com/2012-new-arduino-uno-r3-boar"
@@ -192,7 +194,9 @@
               (string-append
                "comes with USB A to B cable.  unit cost goes down for"
                " large orders, see page for specifics."))
-   (make-item "motor" 2 6 7 "https://solarbotics.com/product/gm3/")
+   (make-item "gm3 motor 224:1 90 degree shaft"
+              2 6 7
+               "https://solarbotics.com/product/gm3/")
    (make-item "transparent 400 point (half) BreadBoard"
               1 5.95 1
               (string-append
@@ -218,15 +222,15 @@
                "Scotch-Permanent-Double-Sided-Foam-Tape/"))
    ;; TODO: get actual cost of #4-40 phillips 1&1/4" screws
    (make-item "#4-40 Phillips 1 1/4 inch screws"
-              3 .1 1
+              4 0.1 1
               "olander" "price is an estimate. can pick up in person")
    ;; TODO: get actual cost of #4-40 hex lock nuts
    (make-item "#4-40 hex lock nuts"
-              6 .1 1
+              6 0.1 1
               "olander" "price is an estimate. can pick up in person")
    ;; TODO: get actual cost of #6-32 3/8" screws
    (make-item "#6-32 button hex head socket 3/8 inch"
-              12 .1 1
+              12 0.1 1
               "olander" "price is an estimate. can pick up in person")
    (make-item "motor controller"
               1 (/ 5.2 5) 10