Date: Tue, 23 May 2000 18:34:30 -0400 From: "bcotton" <[EMAIL PROTECTED]> Subject: GPS, Libretto and moving map on a bicycle I got dropped from the list but I am back; I have endured not having a GPS with a background map for the length of time that they were available. I use a Garmin II+ and a Libretto computer for "moving map on a bicycle". However, I leaving the computer home for day trips because of the extra weight on it and the 4 pounds of battery I carry to get 8 hours of uses. Also the screen is hard to see in bright sun light and the least bit of rain I at least turn it off. I did get a eMap and will use it with the Libretto until I convince my self to buy the Garmin maps and memory module. I did make a data jack for the eMap, a picture is this web page. I will post a drawing if anyone ask. http://ourworld.compuserve.com/homepages/bcotton/tripmate.htm eMap data/power cable I made using my machine shop to machine the plastic sliding jack. I used a Radio Shack's 12 volts reducer/regulator that has 6 voltages output with the last being 3 volts. I ran the ground, input and output wires to a din plug, same as I use for quick change with my GPS II+. I routed the cable through the regulator to a sliding jack the uses "escutcheon pins" for contacts. The pins have a body diameter of 1.2 mm, head diameter of 4.6 mm, head height of .9 mm and overall height of 2 mm. I machined the plastic body to the slot size in the eMap. I milled a pocket so that the head protrudes about. 1mm. I found that to use the cable for data only, I should not insert the power pin. Apparently the presence of the pin making contact cause a "External power loss, GPS will shut down unless any key is pressed" alarm. The unit puts out 4 volts and caused the eMap screen to blueout. I have to get a regulator that holds the voltage to the +- .5 voltage that Joe Mehaffey quoted. I remove the power pin and will use my device for date for now. I have NiMh in the eMap that are rechargeable >//---------------------------------------------------------------- >// Bill Cotton: Lat/Lon N40� 02.867', W75� 09.105' >// [EMAIL PROTECTED] [EMAIL PROTECTED] >// [EMAIL PROTECTED] >// http://billcotton.homestead.com >// http://membersdelphi.com/billcotton >// http://ourworld.Compuserve.com/homepages/bcotton/homepage.htm ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://libretto.basiclink.com/archive - Archives http://www.picante.com/~gtaylor/portable/faq.html - FAQ -------UNSUBSCRIBE------- mailto:[EMAIL PROTECTED]?subject=cmd:unsubscribe --------UNSUBSCRIBE DIGEST------ Use above but add DIGEST to the subject line... **************************************************************
