Coin Hopper Control, Serial Interface, ccTalk

I am looking at creating a change dispenser device and I am totally unfamiliar with the different coin hoppers and the different protocols that control them.

There are several interface boards like the links below that claim to offer an interface for different coin hoppers

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I need some advice from a VB.Net programmer that has worked with the ccTalk protocol or change hoppers and know how to control them.

What I want is a VB.net project with one textbox and one button.

The textbox will hold a decimal value between 0.01 and 0.99 and when the process button is clicked the correct amount of change will be dispensed using four coin hoppers.

The four coin hoppers will hold 0.01, 0.05, 0.10 and 0.25 U.S currency.

When the process button is clicked the correct amount of change/coins will be dispensed from the correct coin hoppers.

This project can utilize one of the interface boards above or an alternative and must recommend a particular coin hopper/interface.

This project is for $40 and is solely for technical expertise. I am in need of some expertise on

What is the best way to configure the coin hoppers?

Should a control board be utilised if so which one.

Sugestions must be compatible with VB.Net

This project is for advice/sugestions only.

Only an experienced VB.net programmer with knowledge in currency hardware such as coin hoppers may bid on this project.

Thanks...

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