| 1 | #! /usr/bin/env racket |
| 2 | #lang racket |
| 3 | |
| 4 | (module+ main |
| 5 | (displayln total-cost)) |
| 6 | |
| 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)) |
| 14 | (define bill-of-materials |
| 15 | (list |
| 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"))) |
| 62 | |
| 63 | (define total-cost |
| 64 | (apply + (for/list ([thing bill-of-materials]) |
| 65 | (* (item-quantity thing) (item-unit-cost thing))))) |