Tommy Larsen
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  • Svelvik
  • Norway
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Tommy Larsen's Discussions

Tarot homepage

Started this discussion. Last reply by Tommy Larsen Dec 26, 2013. 2 Replies

Hi allI'm about to order a Tarot T810. But i want to be sure that i buy a genuine Tarot.I have found both http://www.tarot-rc-heli.com and…Continue

Tags: original, genuine, T810, Tarot

Remove Geo-fence

Started this discussion. Last reply by SKYBORNE Jul 9, 2015. 6 Replies

Hi allI have succesfully made a geo-fence for the first time. Now i want to remove it.... But how do i delete the geo-fence uploaded to my APM2.5 ??Continue

Tags: geo-fence

APM2.5 and GPS problem

Started this discussion. Last reply by Tommy Larsen May 21, 2013. 2 Replies

Hi allI have a problem connecting to my brand new APM2.5. I connected the UBLOX gps and then connected the APM to my USB / computer. As the video shows, when the gps is connected, the leds are lit…Continue

Tags: apm2.5, boot, led

Flight Data - Servo tab

Started this discussion. Last reply by Tommy Larsen Feb 14, 2014. 3 Replies

Would be nice if we could name each channel/button like the red textboxes below, so we don't need to remember what function is on which channel/button on this new and nice feature in MP :-) BTW, is…Continue

 

Tommy Larsen's Page

Profile Information

About Me:
Have been flying model airplanes since 1992 and consider myself an experienced flyer. I work as a Software Engineer developing surveillance systems for Telecom industri. I have 16 years of experience in computer/server, communication and security systems(A few years as a commercial diver in between).
Please tell us a bit about your UAV interest
Loooong range flights! :-)
Hometown:
Svelvik

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Tommy Larsen's Blog

Full size Y6 Air-Scooter

Posted on August 29, 2013 at 10:37am 36 Comments

I sat down and made a sketch after i got the idea of making a full-size Y6 with an APM2.5 and Arducopter firmware :)…

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Skywalker X8 hand injury

Posted on June 8, 2013 at 12:38am 54 Comments

Everytime i launch my X8 it's never any problems. That was until i mounted a bigger propeller. I went from 13x6 to 14x9.5 and my plane "suddenly" went out of my hand much faster than before! The result is a painful hand and a lot of thinking :) Maybe some of you guys should think twice before you hand launch…

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Skywalker X8 - Video and Telemetry via 3g internet

Posted on May 5, 2013 at 12:36pm 67 Comments

Here is a short video presentation of my Skywalker X8 UAV using 3g broadband internet for video and telemetry.

 

Onboard my X8 i have this ZTE MF60 3g/Wifi router which handles the communication for the APM2.5 and the…

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Comment Wall (6 comments)

At 7:29am on October 16, 2012, OJørgen said…

Takk skal du ha :)

At 11:16am on January 2, 2014, Tyrell John said…

Hi Tommy Larsen.

I'm needing help on my project.

Maybe if you go some time you can show me how to get thing to working

http://mrt247.wix.com/project-arrow

At 11:17am on January 23, 2017, Charles Linquist said…

Tommy, I'm using webRTC for the video and ser2net to handle the telemetry. Ser2net is running tcp and webRTC is using UDP (of course).  I find webRTC to be faster and to have lower latency than GSTREAMER. It also seems to be more stable.  

The downside to running webRTC is that you have to use a webRTC server.  But my son works for a company that uses a lot of Amazon server 'cycles' so that the extra that I use is very, very small in comparison.  So that connection is free for me.  

Another upside to my technique is that I use a small uC (uChip PIC) that watches the serial data from both the Raspberry and a RFD900+ radio.  If the PIC detects a valid Mavlink packet on either line, it switches the appropriate source to the flight controller. So I can go back and forth between radio and 4G - at least in the air.  I'm working on two other items now - a change to Mission Planner that causes it to switch sources (COM vs. tcp) automatically WITHOUT reloading all parameters on connect.  The other thing is a "dongle" that takes PPM data from a receiver and converts that to USB so that I can use a regular joystick controller to feed into Mission Planner.  I don't like the Logitech game controller. The goal is to flip a switch on the Futaba (which changes the pulse width of an unused channel) and have that switch between the 2.4GHz link and the 4G one.

I live near some mountains where I like to fly (good pictures), and every once in awhile, there is no 4G.  Having it fail over quickly and seamlessly to radio is really handy (and vice versa).

At 11:50am on January 23, 2017, Tommy Larsen said…

Thank you Charles.

Do you have any Rpi code example to help me along the way?

I have my own server to install the system.

At 2:59pm on January 23, 2017, Charles Linquist said…

I am putting together a tutorial right now.  As you know, that takes a bit of time to get right. I should have it documented well enough to use in 4-5 days. 

In the meantime, it is easier to contact me at -

Charles@Linquist.net

It should be obvious that I have some Scandinavian relatives myself!

As a "heads up", to get you thinking - I'm using 

UV4L

webRTC

ser2net

autossh

wvdial

The appropriate drivers for the Novtel or Pantech dongles

A keyfile must be generated (copter SSH's into the server).

The server is doing a reverse SSH tunnel as well as hosting a webRTC service. Same network name, different ports.

I just finished building a gimbal for a modified (wide FOV) Raspberry pi 8MP camera.

At 3:02pm on January 23, 2017, Tommy Larsen said…

Yes you got this Swedish surname :) Snakker du svensk også kanskje?

Looking forward to your tutorial and I will send you an email also.

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