tag:blogger.com,1999:blog-326348362011-04-21T19:07:39.277-07:00lezhttp://www.blogger.com/profile/12395182845586432147noreply@blogger.comBlogger31100tag:blogger.com,1999:blog-32634836.post-1155569004521696242006-08-14T08:19:00.000-07:002006-08-14T08:23:24.523-07:00Well up above is the topside of the pcb I just drew up, only took about 5 hours, or was it 6..........<br /><br />Its designed to work as a test/proto board, but I also added connectors and a few transistors so it can go out into the real world and be connected up to real equipment for onsite tests, most proto boards dont.<br /><br />Simply the f2550, loads of led's to see whats going on, few transistors to switch relays, a usb socket, and a 4 pin header to take off to a serial port, notice no max232, I'll just go the cheap 2 resistor method, tried that before a f88 worked fine, that and I also want to use 5v serial for the phone anyway so no need to level shift.<br /><br />Now I have to etch it (Toner Transfer) and then drill all the damn holes.........<div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/32634836-115556900452169624?l=the-usb-pic-gsm-car-alarm.blogspot.com' alt='' /></div>lezhttp://www.blogger.com/profile/12395182845586432147noreply@blogger.com0tag:blogger.com,1999:blog-32634836.post-1155568704592290072006-08-14T08:17:00.000-07:002006-08-14T08:18:24.606-07:00<a onblur="try {parent.deselectBloggerImageGracefully();} catch(e) {}" href="http://photos1.blogger.com/blogger/859/3570/1600/gsmtop.jpg"><img style="margin: 0pt 10px 10px 0pt; float: left; cursor: pointer;" src="http://photos1.blogger.com/blogger/859/3570/320/gsmtop.jpg" alt="" border="0" /></a><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/32634836-115556870459229007?l=the-usb-pic-gsm-car-alarm.blogspot.com' alt='' /></div>lezhttp://www.blogger.com/profile/12395182845586432147noreply@blogger.com0tag:blogger.com,1999:blog-32634836.post-1155422394514418032006-08-12T15:37:00.000-07:002006-08-12T15:41:13.716-07:00This blog is to keep a record of my work in progress, a pic based gsm car alarm with ability to update via usb.<br /><br />Besides being an alarm it will also offer remote control of basic car functions, like door locking etc.<br /><br />Hardware will be based originally on a pic 18f2550, and a t68i, although I hope to change that to a nokia 7110, because I have a few old ones!<div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/32634836-115542239451441803?l=the-usb-pic-gsm-car-alarm.blogspot.com' alt='' /></div>lezhttp://www.blogger.com/profile/12395182845586432147noreply@blogger.com0