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--- crowbox15_bom [2015/01/24 15:46] – [Breadboards] steve
+++ crowbox15_bom [2015/04/19 00:32] (current) – outdated - nuked steve
@@ Line 1: / Line 1: @@
-**NOTE:** Crowbox v1.5 is still in iterative development. This document //follows// the progress that occurs on the physical design. Items listed here may appear and disappear as the design progresses, until the first release when it is finalized.
-====== Electronics ======
-With explanation of duty/role. Experimentally grouped by component type.
-**Notes on cost:**
-  * If only one of a given part is required per Crowbox, only one cost (cost per unit) will be listed for that part.
-  * If each Crowbox requires more than one of any given part, then the **Cost per Crowbox** will also appear.
-===== Microcontroller =====
-The Crowbox system CPU.
-  * Arduino Mega2560 R3
-    * Overall, the decision to use Arduino is Legacy
-    * Mega2560 chosen mainly for its proliferation of I/O pins
-  * Cost per unit
-    * Genuine Arduino- $35.34
-    * Arduino Compatible (Ximico) - $17.99
-===== Breadboards =====
-For ease of assembly and maintenance, Crowbox circuits are assembled on tiny 170-point breadboards.
-  * Cost per unit: $1.33
-  * Cost per Crowbox: $4.00
-Source: http://www.amazon.com/gp/product/B009VJ361G/ref=od_aui_detailpages00?ie=UTF8&psc=1
-**NOTE** This pricing is based on buying six-packs of these breadboards on Amazon Prime. Surely we can find better pricing in quantity direct from China.
-===== Cables, Wires & Connectors =====
-==== Breadboard Jumpers ====
-Used for low-profile wiring of the circuits which are built onto breadboards.
-  * Cost per unit: $6.50
-Source: http://www.amazon.com/Pre-formed-140-piece-Jumper-Wire-Kit/dp/B005GYB93M/ref=sr_1_3?s=industrial&ie=UTF8&qid=1422142733&sr=1-3&keywords=Cixi+Wanjie+Electronic+Co
-==== Dupont Cable ====
-Used for many electrical connections within the Crowbox.
-===== Sensor Packages/Shields =====
-==== SD Card Module ====
-Off-the-shelf Arduino shield which provides SD card access.
-  * SainSmart micro SD storage module
-  * Cost per unit: $8.00
-Source: http://www.amazon.com/gp/product/B00OWQUSFA/ref=od_aui_detailpages00?ie=UTF8&psc=1
-===== Gearmotor =====
-Crowbox 1.5 requires two gearmotors: One to operate the coin dispenser and one to operate the reward dispenser.
-==== Reward Dispenser Motor =====
-  * Mabuchi 12V 2RPM gearmotor
-  * Cost per unit: $13.00
-Source: http://www.amazon.com/gp/product/B006Z439G2/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
-==== Coin Dispenser Motor ====
-  * RioRand 12V 30RPM gearmotor
-  * Cost per unit: $13.50
-Source: http://www.amazon.com/gp/product/B00J92SADE/ref=od_aui_detailpages01?ie=UTF8&psc=1
-**We should find a cheaper source for these motors. Alibaba or something.**
-**We may need to source a motor with higher RPM - or gear them up**
-===== Pushbutton =====
-==== Training Phase Selector ====
-This button permits the Crowbox operator to select which phase of the training protocol is currently being observed.
-  * 12mm x 12mm SPST PCB normally-open momentary pushbutton
-  * Cost per unit: 45 cents
-Source: http://www.amazon.com/gp/product/B008MLKJ3C/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1
-===== Rocker Switch =====
-This is the main power switch for the Crowbox.
-**NOTE:** We plan to install the power switch inside the Crowbox to guard against tampering therefore a weatherproof switch is not required.
-  * Rocker Switch: B00AKVBEN6
-  * Cost per unit: 50 cents
-Source: http://www.amazon.com/10Pcs-Round-Button-Rocker-Switch/dp/B00AKVBEN6/ref=sr_1_5?ie=UTF8&qid=1422139539&sr=8-5&keywords=rocker+switch
-===== Lever Switch =====
-This switch interfaces with the //cam// on the //perch armature// to detect bird arrival and departure.
-  * Lever Switch: V-156-1C25
-    * Normally OPEN
-    * Any long-lever-with-roller switch will work.
-  * Cost per unit: 72 cents
-Source: http://www.amazon.com/gp/product/B00FHCHX6K/ref=od_aui_detailpages00?ie=UTF8&psc=1
-===== LED =====
-A total of four LEDs are required for each Crowbox- these are used to indicate which training phase is currently activate (one, two, three or four).
-  * Any 3.0 to 3.6 volt LED will do.
-  * Cost per unit: 5 cents
-  * Cost per Crowbox: 20 cents
-Source: http://www.amazon.com/gp/product/B0060FGA8A/ref=od_aui_detailpages00?ie=UTF8&psc=1
-===== Optical Sensors =====
-Three instances of the same optical sensor circuit are used in each Crowbox:
-  * One watches to ensure the Reward Dispenser actually dispenses
-  * One watches to ensure the Training Coin Dispenser actually dispenses
-  * One watches for any coins deposited by birds
-The main component in each of these sensor circuits is the TCRT5000 reflective optical sensor.
-  * Cost per unit: 54 cents
-  * Cost per Crowbox: $1.62
-Source: http://www.amazon.com/gp/product/B008A3VP6M/ref=od_aui_detailpages00?ie=UTF8&psc=1
-===== Resistors =====
-Used in various circuits throughout the Crowbox, grouped by role.
-===== Capacitors =====
-Used in various circuits throughout the Crowbox, grouped by role.
-===== Diodes =====
-Used in various circuits throughout the Crowbox, grouped by role.
-====== Structural ======
-Parts making up the framing, housing and support members of the Crowbox.
-  * 1/8" Baltic Birch plywood
-====== Fasteners & Hardware ======
-Mechanical fasteners - nails, bolts, screws, clips, etc.
-===== Cabinet Lock =====
-Provides basic security against tampering and vandalism.
-  * Cost per unit: $5.00
-Source: http://www.amazon.com/Prime-Line-Products-9943-Diecast-Stainless/dp/B00173CT58/ref=sr_1_11?s=hi&ie=UTF8&qid=1422140038&sr=1-11
-====== Adhesives & Coatings ======
-Glues, paints, sealants.
-  * Gorilla wood glue