This sure ain't easy.
I take the point that underlining might be mistaken for a link.
It was the original "here" that threw me.
The hyperlink icon is pretty clear to see and I don't see why it should be a reason for blocking underlines.
I'm going to avoid any sort of formatting in the future. As I recall, there was a lot of hand smacking for anyone who didn't the code blocks and I never knew there was any other way of doing it. So now the code block is called pre-formatted text. Text? Code? Mary had a little lamb is text, but it's not code.
As for the points, I never had many Karma points, but what there were seem to have disappeared.
I had at least contributed enough to be called a Senior Member, but now I'm basic and apparently a hopper, WTF that is. Denis Hopper? Frog hopper? Space hopper? I find it insulting.
Looking at some of the contributors nametags, a number of the regulars aren't too pleased to have been demoted either
Suddenly having to deal with a totally different forum layout after years with the old one is a bit of a learning curve for me.
I'm all for improvements, but not facelifts.
Standard Life Aberdeen have just fallen foul of that. Apparently Standard Life Aberdeen wasn't good enough.
What are they now? Abrdn. Yes stripped all the vowels out, lost all their identity in one fell sweep.
Sorry it took so long to reply, family got in the way.
I have a ham radio license, the radios I am using can travel for about a mile, and all of that is working fine. What I am trying to do is to have a security system for my farm, with Arduino's using radios to communicate to able to activate different things. I have one Arduino that has sensors to detect motion and for those types of things and it works. What I need is for that Arduino to send a signal to other Arduino's (In different buildings) to activate lights and other stuff like that.
What I am trying to get done is the communication and I have a ham radio license, radios, and audio cables just sitting around. So I want to use these for the main Arduino to send signals to the other Arduino's, the only problem is I don't know anything about Arduino's reading audio from an audio jack inout. The after reading your post I think I may need more equipment, if my idea won't work, are there any other ways to have just one Arduino send signals to other Arduino's over half a mile wirelessly?
Digi XBees work well with Arduino boards, but can be a bit tricky to set up.
XBees are well supported by Digi International and have a powerful free configuration tool called XCTU.
To connect an XBee to the Arduino, you use the TX and RX pins.
Unos share these pins with the upload and serial monitor so use serial software to give you extra TX/RX pins. Boards like the Mega 2560 have extra TX/RX pins so don't need software serial.
You send data in packets which can be interpreted at the other end.
XBees can stand alone and have digital input and output pins that can be operated directly without a microcontroller.
Look up Virtual Wire for other ideas.
You could use a simple 433-MHz pair of radio modules that have good range in the open.
Most of these have inputs and outputs that would connect to Arduinos at either end.
Do a bit of digging around in this forum and I'm sure you will find plenty of examples that would fit your reqirements.
I've used 433-MHz modules as well as XBees to monitor gas, electricity and water meters sited remotely.
Edit
Have a look at this link
https://learn.sparkfun.com/tutorials/xbee-shield-hookup-guide/all
For modules, depending where you are, RF Solutions do a lot of modules and Hope do as well
Getting back to @computerman347's original question.
If I understand correctly, you just want to send different frequency tones from one Arduino to a walkie-talkie for transmission. At the receiving walkie-talkie, you want to decode what frequency was sent and then do something accordingly? Is that correct?
It sounds like you have the radio link sorted out, as well as the various sensors. True?
So, I would point you to the tone() function for the transmitter. This allows you to output square waves of different frequencies which you can then feed to your transmitter. For the receiver, you need something like this, which will measure the frequency of the received tone:
Is that enough information to get you going?
Check into LoRan, that should be familiar to you and may be able to do what you want.
Then you must know there are only a very few amateur frequencies that can be used for remote control and even then you must identify in either CW or voice with your call sign. Your common hand held devices do not normally operate on any of the remote control frequencies.
Paul
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