MultiWii

copterrichie

MT4j - Multitouch for Java™ - is an open source Java™ framework, created for rapid development of visually rich applications.
MT4j is designed to support different kinds of input devices with a special focus on multi-touch support.

http://www.mt4j.org/mediawiki/index.php/Main_Page

copterrichie

Considering I have resumed work on this project, I figured it was time to update this thread. I recently learned how to build a custom version of controlP5 removing the mousepressed allowing simultaneously point reads on an Android tablet touch screen. The following video is prior to the controlP5 M...

copterrichie

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

copterrichie

One of the greatest thing about this MultiWiiCopter project, NOT everyone have to march to the same drumbeat. The project is so versatile allowing everyone to use what ever hardware they may have or can afford and employ their personal programming/building skills to their own desires. Ok, that is al...

copterrichie

Thank you ezio and Theelectronicguy, version II with both virtual Joysticks active simultaneously coming soon.

copterrichie

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!!!

copterrichie

Testing the Tablet Wifi Connection to the WiiPiCopter, there are no advanced features at this stage with only channel 1-4 enabled. Will be adding trim tabs and control buttons later, in its present stage, it will allow me to continue working on the copter itself.

copterrichie

It is not any of the favors of Java but the fonts themselves. Windows, Mac nor Linux share the same font libraries. Because I use Processing, I just change the font to something I like.You can get a list of the available fonts by doing what is listed on this page: http://processing.org/reference/PFont_list_.html

copterrichie

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

Rats, there is always something.

copterrichie

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

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 e...

copterrichie

With my project, I had the idea that I'd eventually start stripping out a bunch of extra stuff that wouldn't be needed for RTH...It would only support either Rx pass-thru or RTH and nothing more... If motor pins are not required, that would free up the SPI port. With that free, and External eeprom ...

copterrichie

Memory is the issue with the 328 and always have been. IMO, that is why there are so many #define statements.

copterrichie

It takes time, not everyone is bright nor do they have the resources to just drop old hardware. I was just telling a good friend that I wish I did not invested so much in to the hardware I own and married to MWC because of that, I can't just dump it all for APM or anything else at this time.

copterrichie

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

copterrichie

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!!!

copterrichie

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

copterrichie

And here is the AndroidManifest [/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"> <...

copterrichie

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

copterrichie

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

copterrichie

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 com...

copterrichie

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

copterrichie

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

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 ...

copterrichie

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 ar...

copterrichie

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 al...

copterrichie

Just a small update and a huge step towards HD FVP.

In this test, I have the video resolution set to 1280 x 720p to see how much latency there is when compared to an analog video transmission.

copterrichie

waltr wrote:A Con is if you blow out one ESC the whole unit is bad.

I think the uniqueness of this one is, each esc can be replaced. Getting a replacement is a totally different issue.

copterrichie

EMAX QUATTRO 25A x4 in 1 Brushless Speed Controller UBEC 3A Quadcopter KK

Anyone have any Pros or Cons on this 4 in one ESC?

copterrichie

Oh and Oracle Java is about 50% faster. so, use what is best for your application, mines requires the speed and bug free operation.

copterrichie

treym wrote:
there is no requirement for any oracle jvm , what do you get that requirement from ?

You are entitled to your views but in my opinion, Oracle Java runs better and there are less problems especially with development.. Enjoy.

copterrichie

Rather than a static sym link, you can just add a udev rule to do the work for you. There are plenty of examples on the internet. e.g. I have /etc/udev/rules.d/20-arduino.rules containg the following. It creates /dev/ttyUSB9* which is recognised by MWC and is unlikely to clash with any real TTYUSB ...

copterrichie

What is required in my opinion, is a means or technique to identify the CG and to adjust it accordingly. Not a firmware modification. This is an old argument and I digress.

copterrichie

Without having the modify the MultiWiiConf.pde, the easiest thing to do is to create a link from the device name to a name the config understand. To modify the .pde, that will required installing Oracle Java: http://www.multiwii.com/forum/viewtopic.php?f=14&t=3476&start=40#p45363 or use a Wi...

copterrichie

There is a reason to why I use different size motors and props between the front and rear. That is to adjust the Line of Trust to the Center of Gravity. This is the mixing table that I use. Using four motors and props of the same size is not an issue as long as the CG is adjusted accordingly. motor[...

copterrichie

Houston, we have a mounting location. https://dl.dropboxusercontent.com/u/266727/Pictures/Builds/PiCopter/P1130886.JPG https://dl.dropboxusercontent.com/u/266727/Pictures/Builds/PiCopter/P1130887.JPG https://dl.dropboxusercontent.com/u/266727/Pictures/Builds/PiCopter/P1130892.JPG

copterrichie

The following is a very quick hack to automatically start the video stream upon connection from a client. It uses socat which can be added to the Raspiberry Pi with the command sudo apt-get install socat . #Spawn a getty on Raspberry Pi serial line #T0:23:respawn:/sbin/getty -L ttyAMA0 115200 vt100 ...

copterrichie

Ok, so now the Raspberry WiiCopter(given name as of today) is really for the next stage of development. I will install this assembly on to my ORIGINAL Sweptback/V-tail copter because she has been a very stable platform. The GUI is far from being in its final state shown in the video. During testing ...

copterrichie

I received the Clone Raspberry Pi cameras and now, I have to make a decision to which one to use for the onboard camera System. However, I will build a quick change board to allow for easy access for changing out the camera board as required. The Arduino is now talking to the Raspberry Pi via the se...

copterrichie

I THINK the auto-landing feature is here and not part of the Official release: viewtopic.php?f=8&t=2965&p=32370&hilit=auto+landing#p32529

copterrichie

From all of my observations and personal experiences with y4 and Vtails, the Yaw in that y4 configuration is not very good. It it totally depended upon torque differential. In my opinion, a simple vtail is best and will yield the great yaw performance.

copterrichie

How to upgrade Debian Linux64bit to Oracle Java required for a smooth running java application. 1. apt-get update 2. sudo apt-get disp-upgrade 3. Add the following to the /etc/apt/sources.list deb m wheezy main contrib (For Debian only) 4. sudo apt-get update 5. sudo apt-get install java-package 6. ...

copterrichie

I tried 2.1 , 2.2 and now i'm on 2.3 . Always is showing -1 ROLL -PITCH even if i calibrate . Well, just a gut feeling, it is not the ACC but the gyro Calibration. Try the stick combination to recalibrate the gyro and if that works, I suspect it is how you are powering the board. Question, do you g...

copterrichie

dezeubby wrote:The mpu6050 must be perfectly straight even if i'm doing a acc and gyro calibration ? Everytime in multiwii configuration application i get -1 ROLL -1 PITCH

I have not had that experience with any of my previous builds however, I have not used version 2.3 yet. What version are you using?

copterrichie

I was faced with a dilemma of mounting the MPU6050 inverted or on the backside of my breadboard which would not have been a problem however, I also wanted to make it non-permanent. The solution I derived is using an old HK501b case and mounting the sensor external to the board. This way, I can upgra...

copterrichie

Question please, it really should not matter if a MPU6050 is mounted right side up or inverted as long as the translation is done in the software correct? /* enforce your individual sensor orientation - even overrides board specific defaults */ //#define FORCE_ACC_ORIENTATION(X, Y, Z) {accADC[ROLL] ...

copterrichie

Well, I finally got around to building the shield for the Raspberry Pi. The Arduino ATmeg328/16 running a stripped down version MultiWii2.2/2.3 will handle Low level flight stabilization. Navigation, Camera, Ground Communication handled by the Raspberry PI. The GPS unit, Mag and Baro will be connect...

copterrichie

Without any type of obstacle avoidance mechanism, the safest in my opinion, go to a safe predetermined altitude then return to home. Anything else, it is just too much of risk.

copterrichie

Question, as long as Arduino ATMega328 Pin6 (PWM) is not being used else where, it is safe to assume Pin3 can be safely remapped to it?

Thanks.

copterrichie

Sadly, you will need to uninstall the OpenJDK and install the Official Java from Oracle.

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