This is a forwarded message From: niNjaTaz To: eBookMan@yahoogroups.com Date: Saturday, March 22, 2003, 10:34:08 PM Subject: keyboard interface success!! ===8<==============Original message text=============== With some help from WhitWareInc, I was successful in getting the external keyboard interface to work. He suggested that I give a little info on how I got it to work, in case anyone else would like to build their own. I have uploaded several pictures of mine to show you what I did. (MicroFoldaway.ZIP) A while back Wal-Mart had several keyboards on clearance for the Compaq iPaq 3100, 3600, 3700 and 3800 series. The model of this keyboard is the MicroFoldaway TKB430CQ, manufactured by Micro Innovations. The communications protocol was the same. All that had to be worked out was the keycode matrix (is that right?) and the hardware pinouts. WhitWareInc took care of the software modifications. As for the pinouts, I got lucky! After opening the case, I found that the connector was labeled on the board as to what each pin went to. IMG009730.JPG shows the pin assignments on the board. Using the schematic on WhitWareInc's site, you just connect the pins to the matching labeled pad on the board. I built my interface using SMT (surface mount components) so that I could place the circuit inside the keyboard case. I replaced the stock connector with a four pin connector. All in all, the circuit is pretty straight forward, and the software works great. I hope someone else has built, or will build, this fantastic little addition to a great little PDA. Thanks, again, WhitWareInc... --- Derek Tombrello Shelby TV Service mrmagnet@bellsouth.net ===8<===========End of original message text=========== This is a forwarded message From: niNjaTaz To: eBookMan@yahoogroups.com Date: Sunday, March 23, 2003, 11:50:29 AM Subject: keyboard interface clarification ===8<==============Original message text=============== In my original post, I neglected to say that you also have to build the eBm2eBm circuit, in addition to the keyboard interface. That is the circuit that both provides power to the keyboard/interface and provides the data paths to and from the eBm. I'm sorry for any confusion. --- Derek Tombrello Shelby TV Service mrmagnet@bellsouth.net ===8<===========End of original message text===========