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Super bright LED driver board for I-PAC

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OSCAR:

--- Quote from: SirPoonga on March 30, 2003, 09:31:44 pm ---Hey kelsey.
qbert knocker, would take some money to get the development kit, but after that it'd be cheap :)

BTW, once I incorparate a commandline option (in file too then) to enable the qbert knocker Robin (urebelscum) is willing to put the code into analog+ mame.

--- End quote ---


That is pretty interesting.  To drive a solenoid would still require some extra electronics because according to the docs it looks like they only recommend about 25mA and a solenoid would draw quite a bit more than that I'd think.  But it's still something to consider...

Carsten Carlos:

--- Quote ---To drive a solenoid would still require some extra electronics because according to the docs it looks like they only recommend about 25mA and a solenoid would draw quite a bit more than that I'd think.  But it's still something to consider...


--- End quote ---

Well, we already have the circuit for this, haven't we?  ;)

On my USB-interface I drive one relais, and also have two power transistors so I can draw 1A current each.

OSCAR:

--- Quote from: Carsten Carlos on March 31, 2003, 02:04:49 am ---Well, we already have the circuit for this, haven't we?  ;)

On my USB-interface I drive one relais, and also have two power transistors so I can draw 1A current each.

--- End quote ---

Yes, this is correct.  My point was that this USB device wouldn't be a totally out of the box solution for relays, extra components would need to be added.  It's not something that's hard to do, just something to be aware of.

SirPoonga:

--- Quote from: OSCAR on March 31, 2003, 06:51:03 am ---
--- Quote from: Carsten Carlos on March 31, 2003, 02:04:49 am ---Well, we already have the circuit for this, haven't we?  ;)

On my USB-interface I drive one relais, and also have two power transistors so I can draw 1A current each.

--- End quote ---

Yes, this is correct.  My point was that this USB device wouldn't be a totally out of the box solution for relays, extra components would need to be added.  It's not something that's hard to do, just something to be aware of.

--- End quote ---

well, I'm looking through the source and examples.  Might be possible to implement in mame.  really no good way to try other than having the hardware unfortunately.

BTW, hmmm, I have the complete infrastructure for adding the q*bert knocker.  Just need hardware and testing:)


Hey, goto the website, download the dos example (yeah, an oxymoron).  Read the txt file, WTF are the arguments?

I'm not sure how easy it would be to add something like that into mame.  It uses some ini files that I am not sure come with mingw.  I probably could work by kludging in the library and .h file.

Howard_Casto:
I looked at the details of the "driver" and although it looks promising it's not exactly "usb friendly." What I mean is they didn't program the device in such a way that it was a joystick or a human interface device rather a generic i/o device (like a printer or scanner.)  What this means is every single app would have to be coded specifically for it.  While this would be ok if you just wanted to use it for mame, it's not a practical for other applications (like a generic force feedback board, which was what i was looking into it for)

Even though it claims to be geard towards people who don't want to have to write drivers, I think the driver they give you is too generic to be useful.  

If the chip was given a device designation (like printer, game device, human interface device) then you could easily enumerate it by figuring out which one it is on the list or allowing the user to select it.  As it doesn't do this you have to enumerate via wading through the registry, which is awful imho.  And I agree with sirp.... it's got hella scary dos calls.  


I'm not discouraging anyone from trying... I just wanted to point out that on the software end of things it's no walk in the park either.  In fact, it's brutal compared to connecting to most usb devices imho.  

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