My dad has one of those..... there good.... there is an ascii code for windows key btw(me thinks) but its probably like Meta-Something andy ----- Original Message ----- From: Robert E. Griffith To: Sent: Tuesday, July 17, 2001 10:35 AM Subject: Re: [PIC]: Idea for wireless keyboard > I use the Logitec RF keyboard and mouse (great BTW). They do not provide > the usual caps lock and num lock indicator lights on the keyboard because > they use only a one way link. > > --BobG > > -----Original Message----- > From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]On > Behalf Of Randy Glenn > Sent: Tuesday, July 17, 2001 10:29 AM > To: PICLIST@MITVMA.MIT.EDU > Subject: Re: [PIC]: Idea for wireless keyboard > > You wouldn't have to do any ASCII conversion at all - it would, in fact, be > better not to (what's the ASCII code for the Windows key? For the arrow > keys? NumLock? See my point?). All you have to do is send the raw keycode. > > I don't know if you would have to do a bidirectional link or not - I know > that the PC polls the keyboard to see if it's there, and the PC also > instructs the keyboard as to whether or not Capslock or Numlock or Scroll > lock should be activated. I dont recall if the actual keycodes change when > any of these "locks" are on - if not, then just pretend that the PC said to > turn on the "lock", and light the LED without a reply (this eliminates the > need for a two-way link). If the keycodes are different, however, you'll > need a two-way link - assuming that the change went through could confuse > the PC. > > That's just my $0.02CAD (What is that these days, $-(1E20)USD?). Good luck, > > -Randy Glenn > > Sure, Windows is stable. As stable as the install CD, > balanced on the edge of a ruler. In high winds. > ================================================= > PICxpert@home.com - PICxpert@yahoo.com > PICxpert.com going away - use picxpert.dyndns.org > Not that the site works yet, of course... > ================================================= > > -----Original Message----- > From: pic microcontroller discussion list > [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Andy N1YEW > Sent: Tuesday, July 17, 2001 10:18 AM > To: PICLIST@MITVMA.MIT.EDU > Subject: [PICLIST] [PIC]: Idea for wireless keyboard > > > Here's my idea, but i have no knowledge of IR comms.. > > Take a pic make it emulate the pc and attach it inside the keyboard(powered > from batteries). Take another and make it emulate the keyboard. I think > there were comm routines for the keyboard, so that part should be easy. > transmission from the keyboard to the pc is the trick. using an ir dectetor > from radio shack should work, and it say the bandpass center frequency is 40 > KHz. It output the precense of a 40khz signal as almost logic level > voltages(.5 low and 4.2 high). but it also does not say the pickup dection > rate :(...... to transmit you just modulate the high bits and not low. > > would i have to translate the bits from keyb code to ascii before > transmission? > > how long would the translation take at 4Mhz approximately?? > > and if i did it ascii way how fast would i have to transmit the bytes? > > i was thinking like around 2400 bps....(then my palmtop could control it too > :) > > thanks for any ideas/suggestion/criticizm/complaints.... > > send flames to: /dev/null > > andy n1yew > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics > > -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics