Android Multiwii remote Bluetooth/Wifi

Theelectronicguy · Post by **Theelectronicguy** » Tue Jan 28, 2014 3:23 am

Hi guys,

I developed this app to control a multiwii copter via an android phone. I use it every time I fly since I don't have an RC remote so I know it works well. Features, screenshots and instructions below.

Download Link: http://www.mediafire.com/download/5tog4 ... Remote.apk

[EDIT] The project is now open source: https://github.com/problemo55/Multiwii- ... ree/master

***Features***
Works for multiwii 2.2 (enable #RCSERIAL) and multiwii 2.3
In-app roll/pitch trim
Aux1-Aux4 channels used
Can use bluetooth or wifi to control multiwii
Roll and pitch can be controled via the accelerometer if supported
Customization options
Robust - I don't have an rc remote so I use this app all the time so it is well tested.
Its awesome

***How to use***
Controls:
Click on menu, toggle accelerometer to enable the accel(it is easier to fly)
Volume buttons control the throttle
Click on "Mode" to change from throttle to yaw an back again (under 1100 throttle, you can also trim the pitch and roll)

Bluetooth:
Click on menu, connect
Select your device from the list
Make sure you have the right baud rate selected in settings(default is 115200)

Wifi:
Outside the app, go to wifi settings and connect to the network
Go to settings and change mode to wifi
Default ip is 192.168.1.1 and port 8082, you can change these in settings

Other:
You can rename the aux channels in settings
AuxOn = 2000, AuxOff = 1000

***Permissions***
Only the minimum permissions are required
- Storage -> Used for logging
- Network communication -> Used to create bluetooth and wifi connections
- Bluetooth administration, change wifi state -> Self-explanatory

If enough people are interested in it, I will upload a new version to the market. Let me know what you think.

Theelectronicguy · Post by **Theelectronicguy** » Thu Jan 30, 2014 2:34 am

Any feedback?

-ralf- · Post by **-ralf-** » Thu Jan 30, 2014 10:41 pm

You know "EZ-GUI" ???

Theelectronicguy · Post by **Theelectronicguy** » Fri Jan 31, 2014 12:34 am

Yes, but I cannot use it for two reasons. It only runs on bluetooth and my setup is with wifi + the controls on ezgui are not really adequate for real life flying(try it with a simulator). I released this app since there are probably other people in my situation who would be interested. Thanks

copterrichie · Post by **copterrichie** » Fri Jan 31, 2014 2:06 am

Theelectronicguy wrote:Yes, but I cannot use it for two reasons. It only runs on bluetooth and my setup is with wifi + the controls on ezgui are not really adequate for real life flying(try it with a simulator). I released this app since there are probably other people in my situation who would be interested. Thanks

I also had the same issue, my Tablet does not support Bluetooth so I wrote my own wifi application also. I will give your application a test and report back.

Thanks.

copterrichie · Post by **copterrichie** » Fri Jan 31, 2014 7:23 pm

I downloaded and installed the MultiwiiRemote.apk however, upon executing the program, I received a message of "Bluetooth unavailable on your device". I don't see or can I figure out how to enter a configuration mode if one is available. The graphical screen looks good and the RC Values are being updated on the left-hand side of the screen when the control grid is moved about.

Theelectronicguy · Post by **Theelectronicguy** » Sat Feb 01, 2014 6:52 pm

copterrichie wrote:I downloaded and installed the MultiwiiRemote.apk however, upon executing the program, I received a message of "Bluetooth unavailable on your device". I don't see or can I figure out how to enter a configuration mode if one is available. The graphical screen looks good and the RC Values are being updated on the left-hand side of the screen when the control grid is moved about.

Sorry about that. I was targeting the new sdk and it seems android does not show a menu button if sdk > 10. Just in case, I added a menu button to the app, let me know if it is needed. Updated first post with the new link.

howardhb · Post by **howardhb** » Sat Feb 01, 2014 7:25 pm

What WiFi hardware do you use on the copter?

copterrichie · Post by **copterrichie** » Sat Feb 01, 2014 7:47 pm

Ok, I installed the updated version and was able to access the menu and sub-menus. I set the IP Address and port for my copters and upon pressing the connect, I received: "Unfortunately, Multiwii Remote has Stopped". I have a newer Tablet, going to test it there and see if I receive the same response.

Thank you and I am LOVING This.

Richard

copterrichie · Post by **copterrichie** » Sat Feb 01, 2014 7:53 pm

On the second tablet, I received the following: "failed to connect to /192.168.1.20 (port 8899) after 90000ms: isConnected failed: ECONNREFUSED (Connection refused)

copterrichie · Post by **copterrichie** » Sat Feb 01, 2014 8:52 pm

howardhb wrote:What WiFi hardware do you use on the copter?

Howard, I believe any Wifi to Serial device will work such as this one.

http://www.ebay.com/itm/281205805036?ss ... 1423.l2649

howardhb · Post by **howardhb** » Sat Feb 01, 2014 9:02 pm

Howard, I believe any Wifi to Serial device will work such as this one.
http://www.ebay.com/itm/281205805036?ss ... 1423.l2649

Thanks, I will acquire one and give this a try.

Theelectronicguy · Post by **Theelectronicguy** » Sat Feb 01, 2014 9:29 pm

howardhb wrote:What WiFi hardware do you use on the copter?

I'm using a wr703n router with ser2net installed. Costs ~20$

howardhb wrote:Howard, I believe any Wifi to Serial device will work such as this one.

Cool, I did not know about them. I would still recommend the wr703n since you can add stuff later like a camera and it is 5$ cheaper.

copterrichie wrote:Ok, I installed the updated version and was able to access the menu and sub-menus. I set the IP Address and port for my copters and upon pressing the connect, I received: "Unfortunately, Multiwii Remote has Stopped". I have a newer Tablet, going to test it there and see if I receive the same response.

Thank you and I am LOVING This.

Richard

What android version are you running and what tablet?

copterrichie wrote:On the second tablet, I received the following: "failed to connect to /192.168.1.20 (port 8899) after 90000ms: isConnected failed: ECONNREFUSED (Connection refused)

Hmm, that means there is a problem with the wifi link, nothing I can do from this end. Did you connect to your copter wifi network before connecting with the app? If you are using an openwrt router, I had the same issue and reset it with the command "fastboot", installed ser2net and disabled the console.

I have to go now, I'll be back in about an hour.

copterrichie · Post by **copterrichie** » Sat Feb 01, 2014 9:48 pm

Theelectronicguy wrote:
What android version are you running and what tablet?

Hmm, that means there is a problem with the wifi link, nothing I can do from this end. Did you connect to your copter wifi network before connecting with the app? If you are using an openwrt router, I had the same issue and reset it with the command "fastboot", installed ser2net and disabled the console.

I have to go now, I'll be back in about an hour.

I think it may be a permission issue, I had this problem in the very early stage with my MultiWii Port to Android, both of my tablets are not rooted.

Tablet #1: Version 4.0.4
Tablet #2: Version 4.2.2

My MultiWii Port connects and is very stable however, I like your graphical interface and touch control. Really would make life much easier not having to use a joystick.

Theelectronicguy · Post by **Theelectronicguy** » Sat Feb 01, 2014 11:39 pm

Hi,

What permission issues? It's kind of hard to debug since the AVD does not support wifi

. Could you please get "Log collector" from the market and send the log to "allaboutblender@gmail.com" when you try the app. I can't think of anything that could cause it to fail...

This is the wifi class, if you have any idea of what is different from yours, pray tell:

Code: Select all

public class Wifi extends Communication {
   private Activity myActivity;
   private CommunicationInterface wifiInterface;
   private Socket mySocket;
   private BufferedInputStream input;
   private OutputStream out;
   private WifiManager wifiManager;
   
   public Wifi(Activity myActivity) {
      super(myActivity.getApplicationContext());
      this.myActivity = myActivity;
      wifiInterface = (CommunicationInterface) this.myActivity;
   }

   public boolean Write(byte[] data) {
      super.Write(data);
      try {
         out.write(data);
      } catch (IOException e) {
         e.printStackTrace();
         Connected = false;
      }
      return Connected;
   }
   
   Handler handler = new Handler();
   Runnable inputRunnable = new Runnable() {
      @Override
      public void run() {   
         if(input != null)
            try {
         while(input.available() > 0)
            wifiInterface.onReceive((byte) (input.read() & 0xFF));
            }
         catch(IOException e) {
            e.printStackTrace();
         }
         if(Connected)
         handler.postDelayed(this, 10);
      }
   };   
   
   public boolean flush() {
      try {
         out.flush();
         return true;
      } catch (IOException e) {
         e.printStackTrace();
         return false;
      }
   }
   
   @Override
   public boolean Connect(String ip, int port) {
      address = ip + ":" + port;
      setState(STATE_CONNECTING);
      try {
          mySocket = new Socket(ip, port);
          input = new BufferedInputStream(mySocket.getInputStream());
            out = mySocket.getOutputStream();
            handler.post(inputRunnable);
            setState(STATE_CONNECTED);
            Connected = true;
         }
         catch(Exception e) {
            e.printStackTrace();
            setState(STATE_NONE);
            setState(e.getMessage());
            Connected = false;
         }
      return Connected;
   }

   @Override
   public boolean dataAvailable() {
      try {
         if(input == null)
            return false;
         return input.available() != 0;
      } catch (IOException e) {
         e.printStackTrace();
         return false;
      }
   }

   @Override
   public void Close() {
      Connected = false;
      if(mySocket != null && mySocket.isConnected())
         try {
            mySocket.close();
         } catch (IOException e) {
            e.printStackTrace();
         }
   }

   @Override
   public int getStrength() {
      return 100 + wifiManager.getConnectionInfo().getRssi();
   }
}

And the permissions:

Code: Select all

    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
    <uses-permission android:name="android.permission.INTERNET"/>

copterrichie · Post by **copterrichie** » Sat Feb 01, 2014 11:42 pm

Hmmm, let me go though my code and compare. Back with you shortly.

copterrichie · Post by **copterrichie** » Sat Feb 01, 2014 11:54 pm

The following is how I am doing it for myself, exclude the ControlP5 Stuff.

Code: Select all

import android.net.wifi.WifiManager; 
import android.net.wifi.WifiInfo; 

private WifiManager wifiManager;          // instance of the WifiManager for getting network details
private String wifiState;                 // state of the wifi connection
private String IpAddress;
//private String Network;

Socket socket;
ObjectOutputStream out;
DataInputStream in;

private String HostAddress = "192.168.1.77";
private int port = 8899;
private boolean NetworkFlag = false;

Code: Select all

wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
  
  int wifiStateCode = wifiManager.getWifiState();

  switch (wifiStateCode) {
  case 1: 
    wifiState = "Wifi disabled"; 
    break;
  case 3: 
    wifiState = "Wifi enabled"; 

WifiInfo wifiInfo = wifiManager.getConnectionInfo();
    IpAddress = ReadIpAddress(wifiInfo.getIpAddress());
    controlP5.addTextlabel("IpAddress",IpAddress,1,90).setFont(font15); 
    
    //init_com=true;
    //graph_on=true;
      try {
 
    Socket socket=new Socket(HostAddress,port);
    socket.setKeepAlive(true);
    NetworkFlag = socket.isConnected();
   out=new ObjectOutputStream(socket.getOutputStream());
    in=new DataInputStream(socket.getInputStream());
   controlP5.addTextlabel("HostIP",HostAddress,1,120).setFont(font15); 
 } catch (IOException e) {}
    
    break;
  case 4: 
    wifiState = "Wifi state unknown"; 
    break;
  default: 
    wifiState = "Other wifi state detected: " + wifiState;
  }
  controlP5.addTextlabel("WiFiStatus",wifiState,1,75).setFont(font15); 
  if(NetworkFlag==true){
    buttonSTART.setColorBackground(green_);buttonSTOP.setColorBackground(green_);buttonREAD.setColorBackground(green_);
    buttonRESET.setColorBackground(green_);
    buttonCALIBRATE_ACC.setColorBackground(green_); buttonCALIBRATE_MAG.setColorBackground(green_);
}
    
    WifiInfo wifiInfo = wifiManager.getConnectionInfo();

copterrichie · Post by **copterrichie** » Sat Feb 01, 2014 11:59 pm

And here is the AndroidManifest

Code: Select all

[/code<?xml version="1.0" encoding="UTF-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0" package="processing.test.multiwiiconfusb">
  <uses-sdk android:minSdkVersion="14"/>
  <application android:debuggable="true" android:icon="@drawable/icon" android:label="MultiWiiConfUSB">
    <activity android:name=".MultiWiiConfWifi">
      <intent-filter >
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
      </activity>
  </application>
  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
  <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
  <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"/>
  <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
</manifest>

Theelectronicguy · Post by **Theelectronicguy** » Sun Feb 02, 2014 2:45 am

Ok, Fixed all warnings and added the one permission missing. Give it a try: http://www.filedropper.com/multiwiiremote_3

If It still doesn't work, either send me the log as described in the previous post or plug your phone into the computer and filter the logcat in eclipse by application name "com.multiwii.multiwiiremote".

Thanks

copterrichie · Post by **copterrichie** » Sun Feb 02, 2014 3:12 am

Murphy's Law, the .apk is corrupt. Tried numerous times on both tablets including re-downloading it. :cry:

copterrichie · Post by **copterrichie** » Sun Feb 02, 2014 3:54 am

Ok, I kept trying to redownload a good copy and Eureka!! Success, it works!! I will give it a complete test in the morning.

Thank you!!!

Theelectronicguy · Post by **Theelectronicguy** » Sun Feb 02, 2014 4:52 am

Glad to know it finally worked! Enjoy!

copterrichie · Post by **copterrichie** » Mon Feb 03, 2014 6:46 pm

Thank you for the INSPIRATION, will keep you posted on the testing.

Harnas · Post by **Harnas** » Mon Feb 03, 2014 9:52 pm

I developed similar app for Windows Phone. Now works on my Nokia Lumia 820, and connected with multiwii board via bluetooth. I think in next 2-3 weeks app will be published on windows phone store.

Theelectronicguy · Post by **Theelectronicguy** » Tue Feb 04, 2014 6:15 pm

copterrichie wrote:Thank you for the INSPIRATION, will keep you posted on the testing.

Looks good. How does it fly?

Harnas wrote:I developed similar app for Windows Phone. Now works on my Nokia Lumia 820, and connected with multiwii board via bluetooth. I think in next 2-3 weeks app will be published on windows phone store, and source code will be published.

Nice. I think it would look better if you remove aux1 = 1000 and "illuminate" the 1000/1500/2000 values when they are selected. I never programed for the windows phone. How hard is it and what do you use?

copterrichie · Post by **copterrichie** » Tue Feb 04, 2014 8:00 pm

Theelectronicguy wrote:Looks good. How does it fly?

One of the issues that I have at present with two joysticks, both can not have the focus at the same time. So I will have to write some code (in the process) to pole each joystick separately, the update then MSP_SET before sending that date set to the copter. I am not expecting to get this project into the air just yet, still need to finish up other elements of the copter first.

Thanks for asking.

copterrichie · Post by **copterrichie** » Tue Feb 04, 2014 8:52 pm

Just discovered there is an inherited problem with the touch screens on Tablets and maybe cell phones as well. The touch screen is unable to receive two simultaneous inputs. So, the built in Accelerometer may have to be used in place of one of the sticks.

copterrichie · Post by **copterrichie** » Tue Feb 04, 2014 9:29 pm

So what I need is a multiple touch screen sensitive zones tablet: http://en.wikipedia.org/wiki/Multi-touch

Rats, there is always something.

Harnas · Post by **Harnas** » Tue Feb 04, 2014 11:51 pm

Nice. I think it would look better if you remove aux1 = 1000 and "illuminate" the 1000/1500/2000 values when they are selected. I never programed for the windows phone. How hard is it and what do you use?

Great idea

It should be easy. I use Visual Studio Express 2012 for Windows Phone, and write code in C#.

ezio · Post by **ezio** » Thu Feb 06, 2014 7:49 am

copterrichie wrote:Just discovered there is an inherited problem with the touch screens on Tablets and maybe cell phones as well. The touch screen is unable to receive two simultaneous inputs. So, the built in Accelerometer may have to be used in place of one of the sticks.

Well I think it is the problem of the implementation. Each android device should support multi touch. With new devices it is up to 10 fingers.
http://developer.android.com/training/g ... multi.html

copterrichie · Post by **copterrichie** » Thu Feb 06, 2014 1:00 pm

ezio wrote:Well I think it is the problem of the implementation. Each android device should support multi touch. With new devices it is up to 10 fingers.
http://developer.android.com/training/g ... multi.html

AWE!!! Thank you!!!

Theelectronicguy · Post by **Theelectronicguy** » Thu Feb 06, 2014 7:43 pm

ezio wrote:
copterrichie wrote:Just discovered there is an inherited problem with the touch screens on Tablets and maybe cell phones as well. The touch screen is unable to receive two simultaneous inputs. So, the built in Accelerometer may have to be used in place of one of the sticks.

Well I think it is the problem of the implementation. Each android device should support multi touch. With new devices it is up to 10 fingers.
http://developer.android.com/training/g ... multi.html

Hey ezio,

Do you think you could add support for wifi in the next version of your app? I would love to use it, but as mentioned, I don't have bluetooth.

copterrichie · Post by **copterrichie** » Fri Feb 07, 2014 2:31 am

Java's mousePressed was the source of the problem I was having with reading multiple inputs. Moving forward.

ezio · Post by **ezio** » Fri Feb 07, 2014 8:32 am

Theelectronicguy wrote:
ezio wrote:
copterrichie wrote:Just discovered there is an inherited problem with the touch screens on Tablets and maybe cell phones as well. The touch screen is unable to receive two simultaneous inputs. So, the built in Accelerometer may have to be used in place of one of the sticks.

Well I think it is the problem of the implementation. Each android device should support multi touch. With new devices it is up to 10 fingers.
http://developer.android.com/training/g ... multi.html

Hey ezio,

Do you think you could add support for wifi in the next version of your app? I would love to use it, but as mentioned, I don't have bluetooth.

If you can give me an example code and some description I can try. I don't have the hardware so you will be a tester

Theelectronicguy · Post by **Theelectronicguy** » Fri Feb 07, 2014 7:01 pm

Gladly:

Code: Select all

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.Socket;
import java.util.List;

import android.app.Activity;
import android.content.Context;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.os.Handler;

public class Wifi extends Communication {
   private Activity myActivity;
   private CommunicationInterface wifiInterface;
   private Socket mySocket;
   private BufferedInputStream input;
   private OutputStream out;
   private WifiManager wifiManager;
   
   public Wifi(Activity myActivity) {
      super(myActivity.getApplicationContext());
      this.myActivity = myActivity;
      wifiInterface = (CommunicationInterface) this.myActivity;
      wifiManager = (WifiManager) myActivity.getSystemService(Context.WIFI_SERVICE);
      Enable();
   }
   
   //TODO connectToNetwork not working
   public boolean connectToNetwork(String ssid, String key) {
      WifiConfiguration wifiConfig = new WifiConfiguration();
      wifiConfig.SSID = String.format("\"%s\"", ssid);
      wifiConfig.preSharedKey = String.format("\"%s\"", key);
      wifiConfig.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
      
      int netId;
      WifiConfiguration currentConf = getConfiguredNetwork(wifiManager, ssid);
      if(currentConf == null)
         netId = wifiManager.addNetwork(wifiConfig);
      else
         netId = currentConf.networkId;
      
      if(wifiManager.getConnectionInfo().getSSID().equalsIgnoreCase(ssid))
         return true;
      
      wifiManager.disconnect();
      wifiManager.enableNetwork(netId, true);
      return wifiManager.reconnect();
   }
   private WifiConfiguration getConfiguredNetwork(WifiManager wifiManager, String ssid) {
      List<WifiConfiguration> myList = wifiManager.getConfiguredNetworks();
      for(WifiConfiguration current: myList) {
         if(current.SSID.equalsIgnoreCase(ssid))
            return current;
      }
      return null;
   }
   
   public void setState(String state) {
      this.state = state;
   }
   public String getConnectionState() {
      return state;
   }
   
   public boolean Write(byte[] data) {
      super.Write(data);
      try {
         out.write(data);
         Connected = true;
      } catch (IOException e) {
         e.printStackTrace();
         Connected = false;
      }
      return Connected;
   }
   
   Handler handler = new Handler();
   Runnable inputRunnable = new Runnable() {
      @Override
      public void run() {   
         if(input != null)
            try {
         while(input.available() > 0)
            wifiInterface.onReceive((byte) (input.read() & 0xFF));
            }
         catch(IOException e) {
            e.printStackTrace();
         }
         if(Connected)
         handler.postDelayed(this, 10);
      }
   };   
   
   public boolean flush() {
      try {
         out.flush();
         return true;
      } catch (IOException e) {
         e.printStackTrace();
         return false;
      }
   }
   
   @Override
   public void Enable() {
   if(!wifiManager.isWifiEnabled())
   wifiManager.setWifiEnabled(true);
   }

   @Override
   public boolean Connect(String ip, int port) {
      address = ip + ":" + port;
      setState(STATE_CONNECTING);
      try {
          mySocket = new Socket(ip, port);
          mySocket.setKeepAlive(true);
          input = new BufferedInputStream(mySocket.getInputStream());
            out = mySocket.getOutputStream();
            handler.post(inputRunnable);
            setState(STATE_CONNECTED);
            Connected = true;
         }
         catch(Exception e) {
            e.printStackTrace();
            setState(STATE_NONE);
            setState(e.getMessage());
            Connected = false;
         }
      return Connected;
   }

   @Override
   public boolean dataAvailable() {
      try {
         if(input == null)
            return false;
         return input.available() != 0;
      } catch (IOException e) {
         e.printStackTrace();
         return false;
      }
   }

   @Override
   public byte Read() {
      return 0;
   }

   @Override
   public void Close() {
      Connected = false;
      if(mySocket != null && mySocket.isConnected())
         try {
            mySocket.close();
         } catch (IOException e) {
            e.printStackTrace();
         }
   }

   @Override
   public void Disable() {
   if(wifiManager.isWifiEnabled())      
   wifiManager.setWifiEnabled(false);
   }

   @Override
   public int getStrength() {
      return 100 + wifiManager.getConnectionInfo().getRssi();
   }
}

I actually tried to add it on the source you published on github, but couldn't get it to run >.<. Thanks for adding it

copterrichie · Post by **copterrichie** » Sat Feb 08, 2014 3:50 am

There is no reason I can see to not have one at $49 dollars.

Ematic 7" Pro Series Google Android 4.0

http://www.ebay.com/itm/Ematic-7-Pro-Se ... 0990768817

copterrichie · Post by **copterrichie** » Sat Feb 08, 2014 4:05 am

Here is a much better version for $49 bucks:

HyperTAB 7" Google Android 4.2 Tablet 4GB Dual Core A23 Jelly Bean PC

http://www.ebay.com/itm/HyperTAB-7-Goog ... 1088431544

ezio · Post by **ezio** » Tue Feb 11, 2014 5:45 am

Theelectronicguy wrote:I actually tried to add it on the source you published on github, but couldn't get it to run >.<. Thanks for adding it

I have sent you a message.

copterrichie · Post by **copterrichie** » Wed Feb 12, 2014 12:09 am

copterrichie wrote:Here is a much better version for $49 bucks:

HyperTAB 7" Google Android 4.2 Tablet 4GB Dual Core A23 Jelly Bean PC

http://www.ebay.com/itm/HyperTAB-7-Goog ... 1088431544

I purchased this one for testing and tried it with the EZ-GUI, works perfectly with the exception, No wifi support and some screen formatting.

copterrichie · Post by **copterrichie** » Wed Feb 12, 2014 2:13 am

Just a little heads up on the HyperTAB 7" Google Android, the one that I received, the battery seems to be small. Meaning the battery life is short about an hour to hour 1/2 with wifi enabled. There is a reason why they are only 50 bucks.

ezio · Post by **ezio** » Thu Feb 13, 2014 3:24 am

WiFi support has been added to EZ-GUI and it has been released as Beta version.
To try it go here:
https://plus.google.com/communities/117 ... 6739210133

copterrichie · Post by **copterrichie** » Thu Feb 13, 2014 12:29 pm

I have not personally used this one but reading over the specs, makes it a better candidate to use with MWC because it is 5 volts verse 3.3 volts as the previous one posted.

Serial to Embedded WiFi module,TTL UART, support TCP/UDP protocol + Antenna

http://www.ebay.com/itm/Serial-to-Embed ... 1322563574

ezio · Post by **ezio** » Fri Feb 21, 2014 2:05 am

Theelectronicguy wrote:Gladly:

Code: Select all

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.Socket;
import java.util.List;

import android.app.Activity;
import android.content.Context;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.os.Handler;

public class Wifi extends Communication {
   private Activity myActivity;
   private CommunicationInterface wifiInterface;
   private Socket mySocket;
   private BufferedInputStream input;
   private OutputStream out;
   private WifiManager wifiManager;
   
   public Wifi(Activity myActivity) {
      super(myActivity.getApplicationContext());
      this.myActivity = myActivity;
      wifiInterface = (CommunicationInterface) this.myActivity;
      wifiManager = (WifiManager) myActivity.getSystemService(Context.WIFI_SERVICE);
      Enable();
   }
   
   //TODO connectToNetwork not working
   public boolean connectToNetwork(String ssid, String key) {
      WifiConfiguration wifiConfig = new WifiConfiguration();
      wifiConfig.SSID = String.format("\"%s\"", ssid);
      wifiConfig.preSharedKey = String.format("\"%s\"", key);
      wifiConfig.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
      
      int netId;
      WifiConfiguration currentConf = getConfiguredNetwork(wifiManager, ssid);
      if(currentConf == null)
         netId = wifiManager.addNetwork(wifiConfig);
      else
         netId = currentConf.networkId;
      
      if(wifiManager.getConnectionInfo().getSSID().equalsIgnoreCase(ssid))
         return true;
      
      wifiManager.disconnect();
      wifiManager.enableNetwork(netId, true);
      return wifiManager.reconnect();
   }
   private WifiConfiguration getConfiguredNetwork(WifiManager wifiManager, String ssid) {
      List<WifiConfiguration> myList = wifiManager.getConfiguredNetworks();
      for(WifiConfiguration current: myList) {
         if(current.SSID.equalsIgnoreCase(ssid))
            return current;
      }
      return null;
   }
   
   public void setState(String state) {
      this.state = state;
   }
   public String getConnectionState() {
      return state;
   }
   
   public boolean Write(byte[] data) {
      super.Write(data);
      try {
         out.write(data);
         Connected = true;
      } catch (IOException e) {
         e.printStackTrace();
         Connected = false;
      }
      return Connected;
   }
   
   Handler handler = new Handler();
   Runnable inputRunnable = new Runnable() {
      @Override
      public void run() {   
         if(input != null)
            try {
         while(input.available() > 0)
            wifiInterface.onReceive((byte) (input.read() & 0xFF));
            }
         catch(IOException e) {
            e.printStackTrace();
         }
         if(Connected)
         handler.postDelayed(this, 10);
      }
   };   
   
   public boolean flush() {
      try {
         out.flush();
         return true;
      } catch (IOException e) {
         e.printStackTrace();
         return false;
      }
   }
   
   @Override
   public void Enable() {
   if(!wifiManager.isWifiEnabled())
   wifiManager.setWifiEnabled(true);
   }

   @Override
   public boolean Connect(String ip, int port) {
      address = ip + ":" + port;
      setState(STATE_CONNECTING);
      try {
          mySocket = new Socket(ip, port);
          mySocket.setKeepAlive(true);
          input = new BufferedInputStream(mySocket.getInputStream());
            out = mySocket.getOutputStream();
            handler.post(inputRunnable);
            setState(STATE_CONNECTED);
            Connected = true;
         }
         catch(Exception e) {
            e.printStackTrace();
            setState(STATE_NONE);
            setState(e.getMessage());
            Connected = false;
         }
      return Connected;
   }

   @Override
   public boolean dataAvailable() {
      try {
         if(input == null)
            return false;
         return input.available() != 0;
      } catch (IOException e) {
         e.printStackTrace();
         return false;
      }
   }

   @Override
   public byte Read() {
      return 0;
   }

   @Override
   public void Close() {
      Connected = false;
      if(mySocket != null && mySocket.isConnected())
         try {
            mySocket.close();
         } catch (IOException e) {
            e.printStackTrace();
         }
   }

   @Override
   public void Disable() {
   if(wifiManager.isWifiEnabled())      
   wifiManager.setWifiEnabled(false);
   }

   @Override
   public int getStrength() {
      return 100 + wifiManager.getConnectionInfo().getRssi();
   }
}

I actually tried to add it on the source you published on github, but couldn't get it to run >.<. Thanks for adding it

BTW
You should use this code to get signal strength in percent:

Code: Select all

public int getRSSI() {
      try {
         int rssi = wifi.getConnectionInfo().getRssi();
         int level = WifiManager.calculateSignalLevel(rssi, 10);
         int percentage = (int) ((level / 10.0) * 100);
         Log.d("aaa", "WiFI RSSI=" + String.valueOf(percentage));
         return percentage;

      } catch (Exception e) {
         return 0;
      }
   }

Theelectronicguy · Post by **Theelectronicguy** » Sat Feb 22, 2014 6:10 pm

Thanks for the heads up. Actually, I was trying to get serial data from the copter but I always get -22 returned (234 in int) in the Read() method. Do you have any idea why?

Theelectronicguy · Post by **Theelectronicguy** » Sun Feb 23, 2014 1:58 am

Nevermind, it seems I wasn't sending the request correctly. It's working now.

ezio · Post by **ezio** » Tue Feb 25, 2014 10:25 pm

What is the default IP and port number in wifi to serial modules?

mustafacey · Post by **mustafacey** » Mon Mar 24, 2014 12:48 pm

I can not download the apk file from server. Could you please send me or upload another location?

Theelectronicguy · Post by **Theelectronicguy** » Wed Jun 04, 2014 4:31 am

Updated link. Also added the github project page.

mearshen · Post by **mearshen** » Sun Sep 07, 2014 10:12 am

hello,i add a wifi module to the control board so that i can use wifi. But when i open the app and connect the control board,it displays connected,but the motors don't move when i touch the screen. Do you know what's wrong?

bajvulcho · Post by **bajvulcho** » Wed Feb 11, 2015 1:21 pm

Hello! I am building a quadcopter. I am using Arduino Mega ADK, MPU 9250(gyro + acc + mag), baro BMP180. I configured the MultWii config.h and uploaded it. I have a Bluetooth HC-06 with 115200 baud rate set on it. I am connecting to it with Multiwii Remote but the board does not receive any commands. BT Module is connected on pins 0,1. What am i doing wrong?