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1 | #! /usr/bin/env racket |
2 | #lang racket |
3 | |
4 | (module+ main |
5 | (displayln total-cost)) |
6 | |
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7 | ;; TODO: describe in detail what each field is |
8 | (struct item |
9 | (description quantity unit-cost max-lead-days where-to-get note)) |
10 | (define (make-item |
11 | description quantity unit-cost max-lead-days where-to-get |
12 | [note ""]) |
13 | (item description quantity unit-cost max-lead-days where-to-get note)) |
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14 | (define bill-of-materials |
15 | (list |
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16 | ;; TODO: add solid core wires |
17 | ;; TODO: add male-female jump wires for connecting sonar sensors |
18 | ;; TODO: add 4x AA batteries |
19 | ;; TODO: add 4x AA battery holder |
20 | ;; TODO: add 3d printer filament cost for wheel, sonar sensor holders, |
21 | ;; caster standoff |
22 | ;; TODO: add ball caster |
23 | ;; TODO: add angle bracket from evil mad science |
24 | (make-item "Arduino(tm) board" |
25 | 1 16.98 8 |
26 | (string-append |
27 | "http://www.colorapples.com/2012-new-arduino-uno-r3-board" |
28 | "-atmega328-with-usb-cable-p-89818.html#.U3Lz5nJKyzA") |
29 | "comes with USB A to B cable") |
30 | (make-item "motor" 2 6 7 "https://solarbotics.com/product/gm3/") |
31 | (make-item "transparent 400 point (half) BreadBoard" |
32 | 1 5.95 1 |
33 | (string-append |
34 | "http://www.jameco.com/webapp/wcs/stores/servlet/" |
35 | "Product_10001_10001_2123830_-1")) |
36 | (make-item "jumper wire female/male" 1/5 6 2 |
37 | (string-append "http://www.nexuscyber.com/" |
38 | "7-premium-40-pin-male-to-female-jumper-wires")) |
39 | (make-item "small squares of double sided tape" |
40 | 1/30 12 1 |
41 | (string-append |
42 | "http://www.officedepot.com/" |
43 | "a/products/495242/Scotch-Permanent-Double-Sided-Foam-Tape/")) |
44 | ;; TODO: get actual cost of #4-40 phillips 1&1/4" screws |
45 | (make-item "#4-40 Phillips 1 1/4 inch screws" |
46 | 3 .1 1 |
47 | "olander" "price is an estimate. can pick up in person") |
48 | ;; TODO: get actual cost of #4-40 hex lock nuts |
49 | (make-item "#4-40 hex lock nuts" |
50 | 6 .1 1 |
51 | "olander" "price is an estimate. can pick up in person") |
52 | ;; TODO: get actual cost of #6-32 3/8" screws |
53 | (make-item "#6-32 button hex head socket 3/8 inch" |
54 | 12 .1 1 |
55 | "olander" "price is an estimate. can pick up in person") |
56 | (make-item "motor controller" |
57 | 1 (/ 5.2 5) 10 |
58 | "http://www.ebay.com/itm/like/180976411359?lpid=82") |
59 | (make-item "sonar sensor hc-sr04" |
60 | 2 1.39 7 |
61 | "http://www.ebay.com/itm/161156018270"))) |
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62 | |
63 | (define total-cost |
64 | (apply + (for/list ([thing bill-of-materials]) |
65 | (* (item-quantity thing) (item-unit-cost thing))))) |