So, what is this MiniBox?
Basically, it is the same as the ButtonBox2 (see ButtonBox2 description for information), but with a couple of differences:
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It uses another, smaller CPU, an Atmel AT90S2313. |
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It is a bit cheaper to build than the ButtonBox2. |
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Unfortunately it has less program space. |
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It has also less EEPROM space. |
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It has less RAM. |
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It can only connect up to 32 buttons (in an 8x4 matrix). |
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No support for Caps-Lock, Num-Lock and Scroll-Lock LED indicators. |
Here is a list of the MiniBox features:
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Can only be used in Matrix mode. |
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Up to 32 buttons can be connected (8x4 matrix). |
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No "ghosting/masking key" problems. |
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Which button that sends which keystroke is configurable from the PC using a configuration program. |
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No external power needed, it uses power from the keyboard interface. |
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The software in the MiniBox can be upgraded via the PC's parallel port (a special cable is needed). |
As with the ButtonBox2, you have to build the MiniBox yourself. I have no plans to start to manufacture and sell these devices. Hopefully the description on these pages contains enough information to build a MiniBox from scratch.
But if you decide to build one, you can download all software I have written for the device for free from the software page. I cannot guarantee that it works flawlessly on your system, but if you get any problems with it I will try to help you to solve them.