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

#! /usr/bin/env racket
#lang racket

(module+ main
  (displayln total-cost))

;; the robot is made of a bunch of items, like a screw or a motor.

;; this is a description of items in general.
(struct item
  (;; each item has a natural language description what the part is.
   description

   ;; how many units of this item are on a single robot
   quantity

   ;; how much does a single unit of these items cost
   unit-cost

   ;; how many days will it take to get the item
   max-lead-days

   ;; how to obtain the item
   where-to-get

   ;; any special notes about the item
   note))

;; usually, the above code would be enough for describing a bunch of
;;  items.  unfortunately, the last argument, for the parameter 'note',
;;  must be supplied in the default item constructor created above.
;; this constructor below, called 'make-item', allows creating
;;  items without supplying the argument for the parameter 'note'.  if
;;  the 'note' argument is not supplied, it will be replaced by the
;;  empty string, "".
(define (make-item
         description quantity unit-cost max-lead-days where-to-get
         [note ""])
  (item description quantity unit-cost max-lead-days where-to-get note))

;; TODO: add actual cost for screws, nuts, and other estimated parts
;; TODO: add male-female jump wires for connecting sonar sensors
;; TODO: add 3d printer filament cost for wheel, sonar sensor holders,
;;       caster standoff
;; TODO: add ball caster
;; 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-"
;;;  "ATMEGA16U2-For-Arduino-Compatible-USB-Cable/201090526898")
;;; only $9.99 for arduino uno r3 + usb!!
(define bill-of-materials
  (list
   ;; the construction of the first item is heavily commented.
   ;; the higher amount of commenting is intended to make it clear
   ;;  how the code works to new readers
   (make-item (string-append
               ;; this is the argument for the parameter 'description'.
               ;; it's a description of the orange wire.  this is for
               ;;  documentation.
               "solid core orange 22 awg wire, male-male jump wire."
               "  units in mm.  makes electrical connection between"
               " arduino and motor controller, used for backwards"
               " enabling.")

              ;; this is the argument for the parameter 'quantity'.
              ;; this is the number of millimeters of orange wire
              ;;  in a single robot kit.
              ;; there are 2 orange wires, one for each wire.
              ;; the 120 mm wire reaches to the far side of the
              ;;  motor controller
              (+ 120 90)

              ;; this is the argument for the parameter 'unit-cost'.
              ;; the cost on jameco is 7.95 for 100 feet.
              ;; this calculation converts from dollars per foot to
              ;;  dollars per millimeter.
              ;; there are 100 feet, 12 inches per foot, 2.54 cm / inch,
              ;;  and 10 mm / cm.
              ;; the product of all these numbers is the number of
              ;;  millimeters purchased with $7.95
              (/ 7.95 (* 100 12 2.54 10))

              ;; this is the argument for the parameter 'max-lead-days'.
              ;; since the part is at jameco, i can pick it up same day.
              1

              ;; this is the argument for the parameter 'where-to-get'.
              ;; it is a url where the part can be purchased.
              (string-append
               "http://www.jameco.com/webapp/wcs/stores/servlet/Product"
               "_10001_10001_2154871_-1"))

   (make-item (string-append
               "solid core blue 22 awg wire, male-male jump wire."
               "  units in mm.  connects motor controller and arduino,"
               " used for forwards enabling.")
              (+ 120 90)
              (/ 7.95 (* 100 12 25.4))
              1
              (string-append
               "http://www.jameco.com/webapp/wcs/stores/servlet/Product"
               "_10001_10001_36768_-1"))
   (make-item (string-append
               "solid core white 22 awg wire, male-male jump wire."
               "  units in mm.  connects motor controller and arduino,"
               " used for speed signal.")
              (+ 120 90)
              ;; cost of 1 mm
              (/ 7.95 (* 100 12 25.4))
              1
              (string-append
               "http://www.jameco.com/webapp/wcs/stores/servlet/Product"
               "_10001_10001_36881_-1")
              (string-append "unit cost goes down for large orders,"
                             " see page for specifics"))
   (make-item (string-append
               "solid core green 22 awg wire, male-male jump wire."
               "  units in mm.  connects motor to breadboard.")
              (* 2 175)
              (/ 7.95 (* 100 12 25.4))
              1
              (string-append
               "http://www.jameco.com/webapp/wcs/stores/servlet/Product"
               "_10001_10001_36822_-1"))
   (make-item (string-append
               "solid core yellow 22 awg wire, male-male jump wire."
               "  units in mm.  connects motor to breadboard.")
              (* 2 175)
              (/ 7.95 (* 100 12 25.4))
              1
              (string-append
               "http://www.jameco.com/webapp/wcs/stores/servlet/Product"
               "_10001_10001_36920_-1"))
   (make-item (string-append
               "solid core red 22 awg wire, male-male jump wire."
               "  units in mm.  connects power for all components.")
              (+ (* 2 30) 25 25)
              (/ 7.95 (* 100 12 25.4))
              1
              (string-append
               "http://www.jameco.com/webapp/wcs/stores/servlet/Product"
               "_10001_10001_36856_-1"))
   (make-item (string-append
               "solid core black 22 awg wire, male-male jump wire."
               "  units in mm.  connects ground for all components.")
              (+ (* 30 2) (* 4 25) 25 55)
              (/ 7.95 (* 100 12 25.4))
              1
              (string-append
               "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"
              "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")
   (make-item "4xAA battery holder"
              1 2.25 1
              (string-append
               "http://shop.evilmadscientist.com/"
               "productsmenu/partsmenu/422")
              (string-append
               "can get in store.  unit cost goes down for large orders"
               ", see page for specifics."))
   (make-item "angle bracket, 1/2 inch sides with #6-32 threaded hole"
              4 0.75 1
              (string-append
               "http://shop.evilmadscientist.com/productsmenu/partsmenu"
               "/465-bracket")
              (string-append
               "can get in store.  unit cost goes down for large orders"
               ", see page for specifics."))
   (make-item "Arduino(tm) board"
              1 16.98 8
              (string-append
               "http://www.colorapples.com/2012-new-arduino-uno-r3-boar"
               "d-atmega328-with-usb-cable-p-89818.html#.U3Lz5nJKyzA")
              (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 "transparent 400 point (half) BreadBoard"
              1 5.95 1
              (string-append
               "http://www.jameco.com/webapp/wcs/stores/servlet/"
               "Product_10001_10001_2123830_-1"))
   (make-item "jumper wire female/male" 1/5 6 2
              (string-append "http://www.nexuscyber.com/7-premium-40-"
                             "pin-male-to-female-jumper-wires"))
   (make-item "deck 8x8 inches"
              1
              ;; cost of entire 24x48 inch pegboard is 55.25
              ;; each deck is only 8x8 inch
              (/ 55.25 (* (/ 24 8) (/ 48 8)))
              1
              (string-append
               "http://www.homedepot.com/p/"
               "Triton-1-4-in-Custom-Painted-Blissful-White-Pegboard"
               "-Wall-Organizer-Set-of-2-TPB-2W/205192313#specifications"))
   (make-item "small squares of double sided tape"
              1/30 12 1
              (string-append
               "http://www.officedepot.com/a/products/495242/"
               "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
              "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
              "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
              "olander" "price is an estimate. can pick up in person")
   (make-item "motor controller"
              1 (/ 5.2 5) 10
              "http://www.ebay.com/itm/like/180976411359?lpid=82")
   (make-item "sonar sensor hc-sr04"
              2 1.39 7
              "http://www.ebay.com/itm/161156018270")))

(define total-cost
  (apply + (for/list ([thing bill-of-materials])
             (* (item-quantity thing) (item-unit-cost thing)))))
Commit	Line	Data
845aa5f9	1	#! /usr/bin/env racket
	2	#lang racket
	3
	4	(module+ main
	5	(displayln total-cost))
	6
8de07f0f	7	;; the robot is made of a bunch of items, like a screw or a motor.
	8
	9	;; this is a description of items in general.
5e2e135e	10	(struct item
8de07f0f	11	(;; each item has a natural language description what the part is.
	12	description
	13
	14	;; how many units of this item are on a single robot
	15	quantity
	16
	17	;; how much does a single unit of these items cost
	18	unit-cost
	19
	20	;; how many days will it take to get the item
	21	max-lead-days
	22
	23	;; how to obtain the item
	24	where-to-get
	25
	26	;; any special notes about the item
	27	note))
	28
	29	;; usually, the above code would be enough for describing a bunch of
	30	;; items. unfortunately, the last argument, for the parameter 'note',
	31	;; must be supplied in the default item constructor created above.
	32	;; this constructor below, called 'make-item', allows creating
	33	;; items without supplying the argument for the parameter 'note'. if
	34	;; the 'note' argument is not supplied, it will be replaced by the
	35	;; empty string, "".
5e2e135e	36	(define (make-item
	37	description quantity unit-cost max-lead-days where-to-get
	38	[note ""])
	39	(item description quantity unit-cost max-lead-days where-to-get note))
8de07f0f	40
8de07f0f	41	;; TODO: add actual cost for screws, nuts, and other estimated parts
	42	;; TODO: add male-female jump wires for connecting sonar sensors
	43	;; TODO: add 3d printer filament cost for wheel, sonar sensor holders,
	44	;; caster standoff
	45	;; TODO: add ball caster
8de07f0f	46	;; TODO: checkout the following, if it's not a fraud, buy for next class
	47	;;; (string-append
	48	;;; "http://www.ebay.com/itm/UNO-R3-Development-Board-MEGA328P-"
	49	;;; "ATMEGA16U2-For-Arduino-Compatible-USB-Cable/201090526898")
	50	;;; only $9.99 for arduino uno r3 + usb!!
845aa5f9	51	(define bill-of-materials
845aa5f9	52	(list
8de07f0f	53	;; the construction of the first item is heavily commented.
	54	;; the higher amount of commenting is intended to make it clear
	55	;; how the code works to new readers
	56	(make-item (string-append
	57	;; this is the argument for the parameter 'description'.
	58	;; it's a description of the orange wire. this is for
	59	;; documentation.
	60	"solid core orange 22 awg wire, male-male jump wire."
	61	" units in mm. makes electrical connection between"
	62	" arduino and motor controller, used for backwards"
	63	" enabling.")
	64
	65	;; this is the argument for the parameter 'quantity'.
	66	;; this is the number of millimeters of orange wire
	67	;; in a single robot kit.
	68	;; there are 2 orange wires, one for each wire.
	69	;; the 120 mm wire reaches to the far side of the
	70	;; motor controller
	71	(+ 120 90)
	72
	73	;; this is the argument for the parameter 'unit-cost'.
	74	;; the cost on jameco is 7.95 for 100 feet.
	75	;; this calculation converts from dollars per foot to
	76	;; dollars per millimeter.
	77	;; there are 100 feet, 12 inches per foot, 2.54 cm / inch,
	78	;; and 10 mm / cm.
	79	;; the product of all these numbers is the number of
	80	;; millimeters purchased with $7.95
	81	(/ 7.95 (* 100 12 2.54 10))
	82
	83	;; this is the argument for the parameter 'max-lead-days'.
	84	;; since the part is at jameco, i can pick it up same day.
	85	1
	86
	87	;; this is the argument for the parameter 'where-to-get'.
	88	;; it is a url where the part can be purchased.
	89	(string-append
	90	"http://www.jameco.com/webapp/wcs/stores/servlet/Product"
	91	"_10001_10001_2154871_-1"))
	92
	93	(make-item (string-append
	94	"solid core blue 22 awg wire, male-male jump wire."
	95	" units in mm. connects motor controller and arduino,"
	96	" used for forwards enabling.")
	97	(+ 120 90)
	98	(/ 7.95 (* 100 12 25.4))
	99	1
	100	(string-append
	101	"http://www.jameco.com/webapp/wcs/stores/servlet/Product"
	102	"_10001_10001_36768_-1"))
	103	(make-item (string-append
	104	"solid core white 22 awg wire, male-male jump wire."
	105	" units in mm. connects motor controller and arduino,"
	106	" used for speed signal.")
	107	(+ 120 90)
	108	;; cost of 1 mm
	109	(/ 7.95 (* 100 12 25.4))
	110	1
	111	(string-append
	112	"http://www.jameco.com/webapp/wcs/stores/servlet/Product"
	113	"_10001_10001_36881_-1")
	114	(string-append "unit cost goes down for large orders,"
	115	" see page for specifics"))
	116	(make-item (string-append
117	"solid core green 22 awg wire, male-male jump wire."
118	" units in mm. connects motor to breadboard.")
119	(* 2 175)
120	(/ 7.95 (* 100 12 25.4))
121	1
122	(string-append
123	"http://www.jameco.com/webapp/wcs/stores/servlet/Product"
124	"_10001_10001_36822_-1"))
125	(make-item (string-append
126	"solid core yellow 22 awg wire, male-male jump wire."
127	" units in mm. connects motor to breadboard.")
128	(* 2 175)
129	(/ 7.95 (* 100 12 25.4))
130	1
131	(string-append
132	"http://www.jameco.com/webapp/wcs/stores/servlet/Product"
133	"_10001_10001_36920_-1"))
134	(make-item (string-append
135	"solid core red 22 awg wire, male-male jump wire."
136	" units in mm. connects power for all components.")
137	(+ (* 2 30) 25 25)
138	(/ 7.95 (* 100 12 25.4))
139	1
140	(string-append
141	"http://www.jameco.com/webapp/wcs/stores/servlet/Product"
142	"_10001_10001_36856_-1"))
143	(make-item (string-append
144	"solid core black 22 awg wire, male-male jump wire."
145	" units in mm. connects ground for all components.")
146	(+ (* 30 2) (* 4 25) 25 55)
147	(/ 7.95 (* 100 12 25.4))
148	1
149	(string-append
150	"http://www.jameco.com/webapp/wcs/stores/servlet/Product"
151	"_10001_10001_36792_-1"))
558c4ef8	152	(make-item "9v battery"
	153	1 (/ 9.99 5) 1
	154	"http://www.frys.com/product/5234117"
	155	"can get in store")
	156	(make-item "9v battery holder"
	157	1 (/ 1.25 10) 1
	158	(string-append
	159	"http://www.jameco.com/webapp/wcs/stores/servlet/Product"
	160	"_10001_10001_2128067_-1")
	161	"can get in store")
	162	(make-item "AA battery"
8de07f0f	163	4 (/ 17.99 100) 1
	164	"http://www.frys.com/product/6292850"
	165	"can get in store")
	166	(make-item "4xAA battery holder"
	167	1 2.25 1
	168	(string-append
	169	"http://shop.evilmadscientist.com/"
	170	"productsmenu/partsmenu/422")
	171	(string-append
	172	"can get in store. unit cost goes down for large orders"
	173	", see page for specifics."))
	174	(make-item "angle bracket, 1/2 inch sides with #6-32 threaded hole"
	175	4 0.75 1
	176	(string-append
	177	"http://shop.evilmadscientist.com/productsmenu/partsmenu"
	178	"/465-bracket")
	179	(string-append
	180	"can get in store. unit cost goes down for large orders"
	181	", see page for specifics."))
5e2e135e	182	(make-item "Arduino(tm) board"
	183	1 16.98 8
	184	(string-append
8de07f0f	185	"http://www.colorapples.com/2012-new-arduino-uno-r3-boar"
	186	"d-atmega328-with-usb-cable-p-89818.html#.U3Lz5nJKyzA")
	187	(string-append
	188	"comes with USB A to B cable. unit cost goes down for"
	189	" large orders, see page for specifics."))
5e2e135e	190	(make-item "motor" 2 6 7 "https://solarbotics.com/product/gm3/")
	191	(make-item "transparent 400 point (half) BreadBoard"
	192	1 5.95 1
	193	(string-append
	194	"http://www.jameco.com/webapp/wcs/stores/servlet/"
	195	"Product_10001_10001_2123830_-1"))
	196	(make-item "jumper wire female/male" 1/5 6 2
8de07f0f	197	(string-append "http://www.nexuscyber.com/7-premium-40-"
8de07f0f	198	"pin-male-to-female-jumper-wires"))
a6cd9a01	199	(make-item "deck 8x8 inches"
	200	1
	201	;; cost of entire 24x48 inch pegboard is 55.25
	202	;; each deck is only 8x8 inch
	203	(/ 55.25 (* (/ 24 8) (/ 48 8)))
	204	1
	205	(string-append
	206	"http://www.homedepot.com/p/"
	207	"Triton-1-4-in-Custom-Painted-Blissful-White-Pegboard"
	208	"-Wall-Organizer-Set-of-2-TPB-2W/205192313#specifications"))
5e2e135e	209	(make-item "small squares of double sided tape"
	210	1/30 12 1
	211	(string-append
8de07f0f	212	"http://www.officedepot.com/a/products/495242/"
8de07f0f	213	"Scotch-Permanent-Double-Sided-Foam-Tape/"))
5e2e135e	214	;; TODO: get actual cost of #4-40 phillips 1&1/4" screws
	215	(make-item "#4-40 Phillips 1 1/4 inch screws"
	216	3 .1 1
	217	"olander" "price is an estimate. can pick up in person")
	218	;; TODO: get actual cost of #4-40 hex lock nuts
	219	(make-item "#4-40 hex lock nuts"
	220	6 .1 1
	221	"olander" "price is an estimate. can pick up in person")
	222	;; TODO: get actual cost of #6-32 3/8" screws
	223	(make-item "#6-32 button hex head socket 3/8 inch"
	224	12 .1 1
	225	"olander" "price is an estimate. can pick up in person")
	226	(make-item "motor controller"
	227	1 (/ 5.2 5) 10
	228	"http://www.ebay.com/itm/like/180976411359?lpid=82")
	229	(make-item "sonar sensor hc-sr04"
	230	2 1.39 7
	231	"http://www.ebay.com/itm/161156018270")))
845aa5f9	232
	233	(define total-cost
	234	(apply + (for/list ([thing bill-of-materials])
	235	(* (item-quantity thing) (item-unit-cost thing)))))