I am new to Raspberry and VOIP. I am interested to make a door intercom system using raspberry, as I read most of the post here and those are really helpful,one of the raspberry is acting as server (Asterisk and PBX). I was able to call using sflphonebut that was only for desktop mode and I am interested to call using CLI and for that I installed "PJSIP" as reffered by most of users, but don't have any idea what to do next (I mean how should i start). As it is written after installation I am supposed to try for "pjsua" and "pjsystest" in pjsip-apps/bin, but it doesn't ring any bell for me.
Sorry for my level as beginner but if you don't begin how are you supposed to masters it.
I shall be very thankful.
so i can't explain all of the stuff you need to know, but with this Site you should be able to register to you PBX. It's an documentation to the high level API of PJSUA. If you go further on that site they will lead you through the things you have to do to establish a call.
Although this can be very frustrating because there are many error that can appear. There are some python test application under pjproject/pjsip-apps/src/python/samples, here you should firstly try to establish a call between two clients to be sure you server is well configured.
Just for info, the dest_uri you have to give in the call.py is like so sip:ip:port and you have to change the values in the register.py to your client infos. Then run the register.py in one shell and the call.py in an other shell.
Hopefully i could help you over some barriers, feel free to ask if something was unclear.
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I want to develop an action to google assistant. So i red the documentation here https://developers.google.com/assistant/conversational/overview and i followed this tutorial https://www.youtube.com/watch?v=Z1hxvniJ18s
It s worked and i was allow to develop and test my app in the simulator. The problem is that when it's come to webhook i don't totaly understand how it's work. On the webhook icon i got this
The seconde one allow me to use Google cloud function and firebase but i had to add my billing account to make it available. I also get a console where i can code my fonctions and my responses.
And if i am correct, the first one allow me to connect to my own Api. But i can only enter one field that is the URL adresse and nothing else so how do i code it? Also i see everywhere people using node.js and i would like to use php is it possible?
To sum up my problem, i would like to know how i could connect my action builder to an other service(Api) than google ones? If it's possible to run my server in php and how do i interact with my google action?(I think it's by sending json back and forth but i'am not sure how to do it?) Finally i would like to know if it's possible to test it in local server with mamp and phpmyadmin for exemple to test the answer of the server?
I would be very grateful if someone could help me, show me how to set up all this.
But i can only enter one field that is the URL adresse and nothing else so how do i code it?
When you develop your webhook, you will need to have a single publicly accessible endpoint to connect with. This endpoint will receive an HTTP POST request and you will need to respond with an appropriate response.
Also i see everywhere people using node.js and i would like to use php is it possible?
Any language that can run on a web server can work. Node.js is one that is used a lot, but PHP can work just as well. You can create an actions.php file and then enter an endpoint address https://example.com/actions.php that will be called. You may need to refer to the Request and Response reference for the expected format.
if it's possible to test it in local server with mamp and phpmyadmin for exemple to test the answer of the server?
It's somewhat possible. You'll need to have some method of sending mock requests to your local server, which might be as easy as using cURL or other tools like Postman.
Unfortunately my personal experience with PHP tools is limited, so I can't necessarily walk-through the specifics. But it does seem like you know these tools a bit more and should be familiar enough to be able to get started.
So the title sounds stupid. I'm not really sure how to really word it, but I want someone to help guide me on what to look for. Little back story first so I'm working on a Raspberry Pi project that involves using an LTE service currently I have a dashboard running on a AWS EC2 web server with a simple user working user login.
I have a raspberry pi that is directly pointed to the dashboard/account via an IP address. I want to know how to do something like giving a device an ID and having it connect to an account. So for example with Nest products you have the QR code on the camera you take a photo and that devices get applied to your account.
Is this even possible with Raspberry Pi(I'm sure anything possible, but is it feasible? If so what should I look into or learn how to do such thing. I know its not something that can be answered in a short paragraph just looking for some guidance.
Right, thanks. Well, I think you need to program this into the pi server app. So currently your Pi is reading a sensor and sending this data to the web server, right? I suppose you have a daemon running, taking readings, and doing an API REST call to the server backend, correct? So what you want is to have a unique code for each pi, sent with the API call, and then on your DB server side,you store all readings related to their unique code.
You don't need to pre-validate this code, there are GUID generators that will create a number for you, guaranteed to be unique for all eternity, so on the PI, you set it up once, to create the PI's code, and use it from then on. Now, server side, then associating a device with a user is a matter of choosing the data associated with a given gui. And I think that covers it.
You can improve on this basic idea by giving it more thought, but I think it's a good starting point! Do let me know if I can help you with anything else!
I am wanting to give back to a small gaming community. The idea is to make an app that acts like a chat client to connect to the game servers. I am trying to grasp the concepts on how connections work through examples I've found on the web, since I am self taught by seeing examples.
So far the examples I found are for connections on the same network. What I need is some kind of example that will allow me to connect from different networks or at least an explanation on what I need to do. Also I need to be able to get around a router without with setting port forwarding on the router.
In the end the app will be connecting to the game developer's server but I need a working app before I get his permission to connect to his servers.
Any help will be most appreciated. If any additional information is needed to help just ask and I'll do my best to fill in the gaps.
That is a very broad question, but I try to give you as much information as possible from by point of view. As I'm not yet sure if you want to have a P2P Connection (game-application to game-application) or a standard server model, I will just mentioned different approaches to this problem.
Adobe has support for P2P since a long time. Read some FAQ, esspecially "How does RTMFP differ from RTMP?" (I try to choose Sources with infographics, as that helped me to understand it).
What you really should start playing with and making first steps in, should be NetConnection. This is the very basic Function that will allow you to communicate to a Server running e.g. PHP or connecting to a Flash Media Server (FMS). FMS is inpartcular interresting for you, as it really boosts the ideas what you game could do, but setting up a FMS is not that easy,to host a own instance is even more complex. So if you come to the conclusion that you want to travel the road of using a FMS, I can suggest you Onyx Server. They mainly marketing theirself as a Streaming service, but in reality you will get access to a FMS for a ok'ish price (FMS instances on Amazon were way worst the last time I checked).
The FMS basicly only a Flash AS2 File with some extra Commands. Your FMS can handle real-time (!) persistent connections (!) with any client that connects to it. Everyone is able to connect to the server at first, and you can then choose in your FMS Script what a client have to bring to the table to stay on the server or is rejected. After that, you have a very string tool for a Game. For example, you could have a game instance connect to it, tell the server that an enemy was hit and the server near-instantly (the speed is really amazing, there is no feeled delay, it really is instant. Its called SharedObjects) pass this information down to the enemy game instance. I used FMS only for one project and it was a very long ride to understand it and work with it, but it was a really nice experience, as you code the Server in the "same" language like the game itself (AS2, AS3 = ECMA).
If you dont want to spend money at this stage, you can use the Adobe RTMFP Instance at p2p.rtmfp.net. It is, as far as I know, only for testing and you will be rejected if you misuse the service for a real project, but for starting and testing it will do. If you use the Cirrus Engine, you can even follow this Tutorial. You will find sample code in there:
// Cirrus connect info
private const SERVER:String = "rtmfp://p2p.rtmfp.net/";
private const DEVKEY:String = "{YOUR_DEVELOPER_KEY}";
// Used to connect to the Cirrus service
private var _netConnection:NetConnection;
_netConnection = new NetConnection();
// Listen for status info
_netConnection.addEventListener( NetStatusEvent.NET_STATUS, onNetStatus );
// Connect to Cirrus using our unique URI
_netConnection.connect( SERVER + DEVKEY );
My adive for you would be: Try getting comfortable with NetConnection. It is really straight forward. When I first started using it, I had a couple of days struggeling and reading a lot on the web, but I learned a lot doing so. You should too. Use NetConnection and try to create two simple AS3/FLA instances of your code that both connect to the same domain (use the adobe rtmfp domain for now) and try to exchange some simple String-Data between these instances.
To take some of the pain of your shoulders, add the minimum amount of listeners to your NetConnection like so:
//Main NetConnector
nc = new NetConnection();
//Troubleshooting Listener
nc.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler);
nc.addEventListener(NetStatusEvent.NET_STATUS, status_handler);
//nc.objectEncoding = ObjectEncoding.AMF0; //Default
nc.client = this;
nc.connect("https://some-domain");
////////////////////////////////////////////////////////////////////////////////
/// CALL ERROR LISTENER
////////////////////////////////////////////////////////////////////////////////
private function status_handler(e:NetStatusEvent):void {
//trace("NetStatusEvent");
dispatchEvent(new CallEvent(CallEvent.CALL_NATIVE_NET_STATUS, e, true ));
}
private function securityErrorHandler(e:SecurityErrorEvent):void {
//trace("SecurityErrorEvent");
dispatchEvent(new CallEvent(CallEvent.CALL_NATIVE_SECURITY_ERROR, e, true ));
}
You will get alot of errors and netStatus and NetSecuriy Events. Flash will often run into Sandbox-Violation errors when you now know what you are doing. That can be frustrating but if you keep it up, google every error and compare you implementations with the implementation of others, you will wrap your head around this and can do really neat stuff with it.
I recommend you google sources and tutorials for NetConnection and stick to one that is on your level of knowledge.
Good Luck.
I am trying to make my DH-11 sensor work on my raspberry pi but I have not succeeded after several attempts. I followed the following tutorial from Adafruit:
https://learn.adafruit.com/dht-humidity-sensing-on-raspberry-pi-with-gdocs-logging
My attempts were unsuccessful. I just do not get any feedback whatsoever from the sensor. I know that both my DH11/DH22 sensors do work because I do read data from them if I do the same circuit using my arduinos and run a script. I also don't think my raspberry's GPIOs are damaged in any way since I tried with like 5 and I didn't get any data.
I am not trying to log stuff to a google doc like the tutorial does, I am just trying to read data from the sensor using the raspberry.. I have plans to log the data in a server an access it remotely... But for that I have to get readings from the sensor first.
Now, has anyone achieved this? Reading data from a DH11/DH22 in the raspberry pi? If so, could you tell me which tutorial you followed? I've been looking for some out there but it seems that Adafruit's is by far the most popular one.
Thanks for your help!
Cheers!
We just found a solution by using the following:
commenting out the blacklist as discussed here
and, doing the following as directed here:
better choice: sudo raspi-config
elect “Advanced Options”
then either “SPI” or “i2C” and enable the interfaces there
“YES” to load driver modules automatically
I found the details for setting up the DHT22 quite simple. I followed thispi.com instructions. I have had issues with the sensor itself and that may be your problem. My first one was a dud, but the second one I connected worked great.
So I have been modifying the chat program found here: http://www.dreamincode.net/forums/topic/259777-a-simple-chat-program-with-clientserver-gui-optional/ and I am at the point where I am ready to use it between twp pc's.
The problem is, I do not know enough about server-client relationships to set it up. Is there anything missing in the code for this to work? I just want to link two laptops to chat with one another. Is there any server softare I need to run or something?
I tried openfire but couldn't figure out how to link it, every port number I tried (listed in the admin page) didn't work. This is my first attempt at anything like this and probably beyond my current level of understanding which is why I would greatly appreciate a straightforward solution.
I chose this becaue I needed to do a lot of customization to the code so please use the ones on the page above as a reference. I would post the code here but there are 5 classes and they are neatly displayed on that page already with a explanation of each.
Thanks in advance!
Before you start trying to incorporate external libraries or functions, understand the code. Play around with it a little. See what does what and if you change this setting or that what will happen. Bare in mind that the code is separated into 2 applications:
Client - [ClientUI + Client + ChatMessage]
Server - [ServerUI + Server + ChatMessage]
Check that the application works on a single machine. So keep the server class the same and simply edit the client class so that it points to the current machine.
Run both the server and the client (from the example) on the same machine and when the client asks for the server location input 127.0.0.1 then put the port number you gave for the ServerSocket in Server. This should point to your machine and if this works but not when using 2 separate machines check your firewall settings.