Dinesh, Looked at your controller. Looks pretty good. However, did not see any CW ID or audio processing, a must for a ham repeater. Adding these is a simple thing. CW ID is mostly software. With small PIC memory maybe not enough room.
>From your schematic it appears there are two boards, the controller and a relay board, but the picture think shows all on one board. I am sure the relays are a big expense which would have little use in most repeaters. There are needs some times for these, but usually not in a low cost control. One suggestion. On the 7805 reg noticed 100 uf and 10 uf caps on input & output. Suggest removing the 100 uf on output for it would require respectable large surge current on power up and add 0.1 uf on both input and output. The 7805 has lots of gain and will oscillate easily. 10 uf caps would resonate at low freq providing little high freq response where the 7805 might like to oscillate. >From the relays you used seems overkill for a simple controller. However, it does allow you to use as a remote controller for turning on/off some large items. As with most CPU/software based products one can make for a number of applications with only software changes. Maybe you have already done this. Might be reason for large relays and understand this. Playing with these MPUs for embedded applications can be lots of fun. Howver, don't rely on becoming only a software puke, hi. 73, ron, n9ee/r --- In [email protected], "Dinesh Gajjar" <[EMAIL PROTECTED]> wrote: > > I have made a simple PIC controller with 8 relays. Operates on 12VDC & > has 4 digit PW on PIC. Please check-out details at > http://www.products.foxdelta.com/repeater.htm > > 73s/Dinesh > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
