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Will we get a USB VFD2041
Posted: Sun Mar 30, 2003 9:10 am
by ManSoNN
From what I can tell, there are no USB VFDs. Any on the way soon? Serial is getting pretty tired in my book...
Will we get a USB VFD2041
Posted: Mon Mar 31, 2003 8:35 am
by jar
I think maybe the VFD USB version will never come.
VFD use much more power than LCD, a 20x2 VFD will draw about 200-300 mA. 20x4 VFD will consume more than 400 mA i guess. The usb standard only allow 500mA per device in bus power mode. So, a 20x4 vfd with some GPO should over the limitation. And the device may kill your USB interface.
Re: Will we get a USB VFD2041
Posted: Mon Mar 31, 2003 10:56 am
by WildRice
ManSoNN wrote:From what I can tell, there are no USB VFDs. Any on the way soon? Serial is getting pretty tired in my book...
Just use a keyspan serial to USB adapter.
http://www.keyspan.com/products/usb/pdaadapter/
Should plug and go. -Chuck-
Posted: Mon Mar 31, 2003 10:16 pm
by ManSoNN
Thanks for the replys folks...
Anyone official care to comment on this?
Posted: Tue Apr 01, 2003 5:48 pm
by Pheonix
I think there will be, but not for a while.
VFDs are mostly used in industrial style situations, where high visibility and high tolerance of abnormal operating conditions are required. This market doesn't really need USB displays.
Posted: Wed Apr 02, 2003 3:27 am
by Cheese
As jar says the main issue is power, I thinkt he 20x4 might even use more than the 500mA USB max
So MO will probably have to make drawing power from a separate power connector mandatory for the vk204 USB controller... though I'm sure they'll make one (eventually).
Rob.
Posted: Wed Apr 02, 2003 9:48 am
by Henry
I doubt we will make a VFD2041-USB... but we do have "prototypes" of the VK204-25-USB....
Posted: Wed Apr 02, 2003 9:55 am
by Pheonix
Now your just being pedantic
Posted: Wed Apr 02, 2003 10:01 pm
by JeffPh
hhows the prototype doing henry? any news when is it coming out?
Nothing
Posted: Fri Apr 04, 2003 9:44 am
by jar
Henry wrote:I doubt we will make a VFD2041-USB... but we do have "prototypes" of the VK204-25-USB....
Sound great. Can't waiting to see how your guys to solve the power issue.
(No need external power source)