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EasyMDB

Es una interfaz de computadora que permite comunicar a una computadora con sistemas de cobro compatibles con el protocolo MDB, funciona como un VMC (vending machine controller) como se puede ver en la siguiente figura:

how works vending controller EasyMDB board computer VMC

 

El controlador EasyMDB viene en dos tipos de protocolos, USB y RS232. Si desea utilizar Windows y Visual Studio, el puerto recomendado es del tipo USB, ya que cuenta con una sencilla DLL la cual podrá integrar a su proyecto de manera muy sencilla. Si esta utilizando algún sistema embebido, como Raspberry PI, Beagle Bone o una PC con Linux, el puerto recomendado es el del tipo RS232.

easymdb v4

Puerto USB

Características

  • Sencilla integración de DLL a proyecto
  • Dispositivo USB HID (no funciona como un dispositivo serial usb) esto permite tasas de transferencias de datos más rápidos.
  • Demo completo con proyecto de visual studio 2012 totalmente gratuito
  • No existen licencias complicadas de uso
  • Soporte de dispositivos MDB:
    • Coin Changer
    • Bill Acceptor
    • Cashless devices (disponible en febrero 2015)
  • Compatibilidad para cualquier país
  • Solución bajo costo
  • Integración con display de 4 digitos

Puerto RS232

Características

  •  Compatible con cualquier sistema embebido
    • Raspberry PI
    • Beagle Bone
    • Arduino
    • Tablet (Android)
  • No requiere de driver de instalación
  • Demo completo con Python gratuito
  • Sencillos comandos seriales
  • Soporte de dispositivos MDB:
    • Coin Changer
    • Bill Acceptor
    • Cashless devices
  • Compatibilidad para cualquier país
  • Solución bajo costo

EJEMPLO CON ARDUINO[:en]

EasyMDB

EasyMDB

MDB Interface that allows the communications throw RS232 and USB protocol

Is a Computer Peripheral for interfacing vending machine protocol used by various devices including: Dollar Bill Validators, Coin Acceptors

Compatible with any brand and manufacturer MDB compliant

easymdb v4

Buy

MDB stands for “Multi-Drop Bus” and is a protocol developed by vending machine industry. The “Multi-drop Bus” (MDB) protocol is not compatible with the standard RS-232 PC protocol and therefore a hardware and software interface is necessary. The EasyMDB is a microprocessor controlled hardware interface with embedded firmware that converts the MDB protocol to an RS232 and USB protocol and also performs the necessary voltage conversion. The EasyMDB also relieves the Polling requirements thereby allowing the same PC to perform other tasks.
The EasyMDB is necessary to interface the industry standard MDB Vending machine protocol to a standard PC because:

  • The MDB uses 11 Bits and a nine (9) bit byte.
  • The polling requirements for the various MDB devices are excessive (20-200 ms).
  • A non-dedicated PC can not meet the polling requirements.
  • The EasyMDB takes care of the polling requirements and generates an interrupt on the serial port of the PC.
  • This methods allows the PC to perform normal operations and respond to interrupt driven comm events in the UART buffer.
  • All data from an MDB device is available to the PC.
  • Additionally, all commands can be sent to the MDB device from the PC

The EasyMDB interfaces MDB vending device coin changer, bill acceptors, bill recyclers and cashless devices (6-pin molex/5pin MTA) to the PC via the serial port (DB-9) and USB port.

Coin Acceptors/Dispensers and Foreign Currency:

Any MDB compliant device may be interfaced to a PC or embedded system like Raspberry PI.

USB and Visual Studio of EasyMDB full supported by a DLL, that allow a quick connection to MDB Devices

how works vending controller EasyMDB board computer VMC

USB Port

Specifications

  • Only Windows SO support and visual studio
  • DLL easy implementation
  • Full demo visual studio available
  • No license cost, you only need the interface
  • Support
    • Coin Changer
    • Bill Acceptor
    • Cashless devices
  • Low cost solution

RS232 Port

Specifications

  •  Support Linux, Windows, and any OS that RS232 serial port embedded system
    • Raspberry PI
    • Beagle Bone
    • Arduino
    • Tablet (Android)
  • Don’t driver installations
  • Full demo python available free
  • Command serial communication
  • Compatible with
    • Coin Changer
    • Bill Acceptor
    • Cashless devices
  • Low cost solution
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