Automatic card shuffler
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== Executive Summary: == | == Executive Summary: == | ||
+ | There are alot of card games require to shuffle cards every rounds, some of games need more than one deck. Dealers don't always take the time to perform the seven riffle shuffles necessary to achieve an adequate level of mixing and speed. The automatic card shuffler is a standard shuffling techniques are seen as weak, and in order to avoid "inside jobs" where dealer collaborate with gamblers by performing inadequate shuffles, many casinos employ automatic card shuffler to shuffle the cards before dealing. These machines are also used to lessen repetitive motion stress injuries to a dealer. | ||
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+ | == Customer Needs/Requirements == | ||
+ | There are certain customer needs which the automatic card shuffler should perform: speed of shuffling, battery life, the noise when shuffling and adequate level of mixing. It has to be carefully designed, as they can generate biased shuffles otherwise cards produced from automatic shuffling machines is the subject of considerable interest to both gamblers and casinos. | ||
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== Function: == | == Function: == | ||
* Shuffles cards (playing cards). | * Shuffles cards (playing cards). |
Revision as of 21:59, 18 February 2007
Contents |
Executive Summary:
There are alot of card games require to shuffle cards every rounds, some of games need more than one deck. Dealers don't always take the time to perform the seven riffle shuffles necessary to achieve an adequate level of mixing and speed. The automatic card shuffler is a standard shuffling techniques are seen as weak, and in order to avoid "inside jobs" where dealer collaborate with gamblers by performing inadequate shuffles, many casinos employ automatic card shuffler to shuffle the cards before dealing. These machines are also used to lessen repetitive motion stress injuries to a dealer.
Customer Needs/Requirements
There are certain customer needs which the automatic card shuffler should perform: speed of shuffling, battery life, the noise when shuffling and adequate level of mixing. It has to be carefully designed, as they can generate biased shuffles otherwise cards produced from automatic shuffling machines is the subject of considerable interest to both gamblers and casinos.
Function:
- Shuffles cards (playing cards).
- Speed up the shuffling process.
- Shuffles cards for people who can't shuffle.
- Eliminates the possibility of someone cheating whiles shuffling.
- Stacks the cards nicely after shuffling.
- Speeds up the game (people don't have to take turns shuffling
Inputs/Outputs
- Cards (Inputs)
- Batteries (Inputs)
- Tray (Inputs)
- Shuffled cards (Output)
- Cards stacked neatly in tray (Output)
Use
- Place Batteries (2) in the card shuffler.
- set the card shuffler on the table.
- Set the card shuffler to where everyone can see.
- devide the deck of cards in half.
- place one half on the right of the card shuffler.
- Place the other half of cards on the left.
- Place tray in card shuffler.
- Tray goes in the bottom slot of the card holder.
- Press the button to initiate shuffling process.
- Botton located at the bottom in front of the tray slot.
- When shuffling is complete, remove tray and retrieve cards.
Different Use/ Use Scenarios
- Poker
- Spades (game)
- Speed (game)
- Parties
List of Parts
Part # | Part name | QTY | Function | |
---|---|---|---|---|
001 | Small Screws | 4 | Holds top plastic screen in place | Image:Small.jpg |
002 | Medium Screws | 3 | Located on bottom of case in triangular formation, under the card tray | Image:Med.jpg |
003 | Large Screws | 8 | Located along other perimeter on botom of case, to hold case togather/hold the gear train case | Image:Lrg.jpg |
004 | Clear Top Cover | 1 | Located on top of case in between decks provides slot for cards to slide thrugh. Also, keep the rest of the deck in place by not allowing more card to pass through | Image:Top.jpg |
005 | Operating Button | 1 | Contacts metal piece beneath to complete circuit allowing both motors to operate | Image:Button1.jpg |
006 | Conducting Wire | 5 | Setup in series and connected to the battery. Circuit completed when part 005 is pushed and held down | Image:Wire.jpg |
007 | Motor | 2 | Initiated the power to make the gear rotate in order to shuffle the cards | |
008 | Rubber Gripper | 2 | Increase the friction force to grab the cards into the tray | Image:Rgrip.jpg |
009 | Spur Gear | 2 | Change the direction of gear rotates and create more torque | Image:Spur.jpg |
010 | Offset Gear | 2 | Gears down the power and gain more mechanism | Image:Sector.jpg |
011 | Gear Case | 1 | Covered and protected the gear train tool | Image:Gcase.jpg |
012 | Battery Component | 1 | Transfer the electrical power into mechanical power |
Functional Operations
Before we tested the card shuffler, we took it apart in order for us to see how the shuffler functions and made the following assumptions:
1. There are two gear train systems.
- One motor is driven by batteries, which in return powers the other motor.
- The two motors are connected to each other by two wires.
2. Each gear train has its own motor.
3. For syncronization, there are two modified gears, both of which have teeth on some portion of itself.
4. One of the modified gears has its teeth pointing down, while the other modified gear has its teeth pointing up.
5. We assumed this was important because when a person places cards on both the left and right side of the card platform, one card would be lifted up while the other would be touching the surface of the card platform.
6. The card that remains in contact with the surface of the card platform is carried by a fat gear that is driven by a motor when the user presses the shuffle button.
7. This motor is powered by two "C" batteries.
8. After this card carried into the center slot with the tray, the modified gears are now in alternate positions, and the same process is repeated for the other card on the other side of the card shuffler.