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| Line 28: |
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| *Cheap microcontroller boards such as arduino, Minimus etc. | | *Cheap microcontroller boards such as arduino, Minimus etc. |
| *Blank printed circuit board stock (only fairly small pieces will fit) | | *Blank printed circuit board stock (only fairly small pieces will fit) |
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| | == ToDo == |
| | |
| | * Check motors still run |
| | * Test position sensing again |
| | * Interface with coin/note reader |
| | * Make break beam for successful vend detector |
| | * Write software |
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| | Later: |
| | * Make a new pcb for interfacing with VDU |
| | * Make replacement keypad |
| | * test interface with motors |
| | * add in i2c rfid reader |
| | * shorten and remake coin validator cable |
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| == Name== | | == Name== |
| Line 102: |
Line 117: |
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| See also the [http://mbed.org/users/Jasper/programs/vending/llg8y6/docs/main_8cpp_source.html mbed code]. | | See also the [http://mbed.org/users/Jasper/programs/vending/llg8y6/docs/main_8cpp_source.html mbed code]. |
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| ===Electronic Payment===
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| Is being organised by [[User:Jonty|Jonty]]
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| ===Physical Payment===
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| Is being organised by [[User:Solexious|Solexious]]
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| The vending machine will take physical cash in the form of coins and notes, but will not give change. Any left over cash will be taken and marked as a donation to the space. (This will be clearly displayed before purchase)
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| Sadly the internals were damaged again, the coin and note section has been repaired.
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| ToDo:
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| * Make a new pcb for interfacing with VDU
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| * Make replacement keypad
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| * Make break beam for successful vend detector
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| * test interface with motors
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| * add in i2c rfid reader
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| * shorten and remake coin validator cable
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|
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| ===Arduino serial protocol===
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| The arduino will take input and physical payment, and make requests to its server (the server also takes the paypal payments). This is the proposed communication protocol.
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| All strings are terminated with \n
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| '''Request check item:''' (to check if an item is in stock/available, this reserves 1 of the item for 5 mins to allow for payment to be taken)
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| *CHECK.[item location]
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| '''Returns''':
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| *OK
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| *ERROR.[error text]
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| '''Request cash vend of item''':
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| *VEND.[item location].[payment amount in p]
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| '''Returns''':
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| *OK
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| *ERROR.[error text]
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| '''Request paypal vend''': (paypal customers get a code, to insure they are getting their vend)
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| *PVEND.[code]
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| '''Returns''':
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| *OK.[item location]
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| *ERROR.[error text]
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| == Name == | | == Name == |
