Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would
be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate
that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views.
It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if
you would like to post something on RF Cafe's
page, please do.
Below are all of the forum threads, including all
the responses to the original posts.
Post subject: Help for a newbie Posted: Fri Oct 14, 2005
Joined: Fri Oct 14, 2005 10:05 am
Let me start by saying I have minimal experience with electronics,
I have a Electronics degree from ITT (please.. no laughing) of which
I haven't used any of the knowledge in 7 years. If you find this isn't
the appropriate place for this question or isn't the appropriate site
please point me in the correct direction (before or after you flame
me.. your choice ).
I have the need for a transmitter that is triggered
on a small input voltage (< .5V) the transmitter will need to transmit <
20 feet (usually no more than 5 feet) and trigger a reciever that will
send an output of .5V. What is transmitted doesn't matter (to me anyway).
I will have multiple transmitter/receiver combos in the same location
so I will need mutlple frequencies. I don't know if this is to much
to do for a novice or if this is something simple and I am just skipping
past the solution. If this is something to simple for a novice is there
somewhere I can go to try and find designers?
Posted: Fri Oct 14, 2005 11:43 am
Mon Jul 18, 2005 4:31 pm
Location: Baltimore, MD
Hard to offer you a good solution since you haven't mentioned the application,
but I suggest you look into circuits and ICs made for handling car Remote
Keyless Entry systems (RKE) or garage door opener transmitters. Either
of those will be great for your application... probably even more than
Post subject: Posted: Fri
Oct 14, 2005 12:03 pm
Is there a common place to go to to look for
people who do circuit design for profit? I see a lot of big companies
that say they do it and spread the cost out during the ordering of the
circuit.. but we are kind of in a proof of concept phase and don't really
want to incur a lot of cost for something that isn't going to work the
way we want anyway.
Post subject: Posted: Thu Oct 20, 2005 2:38 am
Joined: Mon Sep 26, 2005 7:29 pm
Kanlings suggestion was a pretty good one. With the concept of garage
door openers, you could have multi RX/TX units, with each having a seperate
code. The coding would allow you to do what ever it is you need multi
RX/TX units for.
As far as designing from scratch, I think you would
be in over your head, and a design person would cost you some serious
money. If you are serious about hiring someone, perhaps you could call
one of the garage opener companies, and ask them if they could take
an existing product and just add the changes which would fit your application.