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Keyboard Emulator
Tiger-Heli:
--- Quote from: Grasshopper on March 20, 2003, 04:03:51 pm ---Also Tiger-Heli, can you give me digi-key's web address please.
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www.digikey.com
slinger:
Let me see if I can show you why this design will not be susceptable to ghosting.
1--C-|--A
2--|--|--|
3--B--|--|
4 5 6
If button A and B are pushed at the same time then button C would llook like it was also pressed because current wouls flow along line 1 down line 4 and out line 3 if a typical matrix was used i.e. 1-3 low and 4-6 high
how I did it was this line 1 is high 2-3 are low as well as 4-6 so there is only one path for current to go and that would be along line 1 untill it goes low and line 2 goes high then the only path would be along line 2 and so on...
in a common matrix 1-3 are low and 4-6 are high all the time and the values are just read in.
Like I said before key in is set up in hardware but not in software yet, but that can be fixed later on easily.
I thought about using a bootloader but I don't think there will be enough software updates to warrant that so I'm sticking to using a programmer to burn the chip.
If you guys can think of any features that I think will be nice to have I'll make the changes and post them, otherwise you're on youur own, I'll be gald to nudge you in the right direction though but don't expect me to do all the work for you.
OSCAR:
--- Quote from: Tiger-Heli on March 20, 2003, 07:21:42 am ---The only Buy/Sell/Trade post I could find was this one http://www.arcadecontrols.org/yabbse/index.php?board=2;action=display;threadid=1891;start=0
The "negative feedback" came b/c the guy was selling a buttonbox with Jamma connector for 100 Euro's without the designer's permission (for about $30 in electronic components.)
Not that I'm a huge buttonbox fan, but I wanted to point out that the bad press concerned the seller and his methods, and not the operation and function of the buttonbox itself.
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Yes, you are 100% correct and you followed my logic perfectly. The reason I mentioned it was because Slinger was offering up the plans for a keyboard encoder for free, and some people (not necessarily the regulars on this board) may see this as an avenue for making some $$ from his work. It has happened before, so I just wanted to point out what happened to the last fellow that tried it. :)
slinger:
If I see anyone do that I'll take action, this is free and should not be sold or commercially produced.
SirPoonga:
--- Quote from: slinger on March 20, 2003, 06:34:18 pm ---If I see anyone do that I'll take action, this is free and should not be sold or commercially produced.
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How would you do that? Is your plans copywrited?