John Gantner 39: Like

0 members like this; Share Twitter

Blog Posts (2)
Discussions (7)
Groups
Photos
Photo Albums
Videos

John Gantner's Discussions

Ground Station UI Designs

Started Jul 2, 2009 0 Replies 0 Likes

Bluetooth and 2.4GHz RC Systems

Started Jun 4, 2009 0 Replies 0 Likes

New OEM Cellular modules on Ebay - $10! (#170335219418)

Started May 30, 2009 0 Replies 0 Likes

View All

John Gantner's Page

Latest Activity

Michael Zietlow commented on John Gantner's blog post 'Google Earth Live FPV & Cellular Telemetry'

The concept sounds great. I have many recorded UAV flights that I would love to see from google earths perspective as though I was flying again. To do it real time via cellular uplink would be even better.

Sep 15, 2009

John Gantner commented on Maik's blog post 'Using the G1 as GPS provider & telemetry for logging or transmitting to ground station'

Good luck with your project. Phones can certainly handle it, but the problem lies with the providers - many block anything other than HTTP (especially WAP APNs). I'm uncertain whether this limitation exists on the "Internet" APNs that…

Jul 9, 2009

John Gantner commented on Maik's blog post 'Using the G1 as GPS provider & telemetry for logging or transmitting to ground station'

I'll be watching your efforts intently - I am very interested in hooking stock cellphones up to MCU boards. I use bluetooth to connect between the phone and the board, then GPRS to connect to the remote server. One obstacle I ran into was that…

Jul 8, 2009

Ground Station UI Designs

I've been occupying my time by writing some ground station software. I felt there was a need for a cross-platform solution, as not everyone can run the Labview GCS. I liked this but I decided to DIY it as a learning exercise. Like that program I am also integrating with Google Earth. The Java Swing compact design Some C GTK widgetsQuestions:I am developing this for personal use, but would anyone else…See More

Discussion posted by John Gantner Jul 2, 2009

0 Comments 0 Likes

John Gantner commented on John Gantner's blog post 'Bluetooth + GPRS Cellular Telemetry, Part II'

I wish. I bought a c168i off ebay but I found it didn't support AT command GPRS data over serial, and SMS is too expensive, too small, and too slow. In any case, I wanted to develop a relatively phone-agnostic solution so this was the only way.…

Jun 23, 2009

Chris Anderson commented on John Gantner's blog post 'Bluetooth + GPRS Cellular Telemetry, Part II'

Any chance of a hard-wired serial link from the autopilot the cellphone? One generally tries to avoid adding more RF sources than necessary onboard.

Jun 23, 2009

John Gantner commented on John Gantner's blog post 'Bluetooth + GPRS Cellular Telemetry, Part II'

The cellular link will eventually be able to issue commands but for now it is just telemetry. I'd appreciate suggestions on a command set for the base station. See my previous blog post for more details on the Google Earth live FPV simulator I…

Jun 23, 2009

Chris Anderson commented on John Gantner's blog post 'Bluetooth + GPRS Cellular Telemetry, Part II'

What kind of UAV applications can you envision for this?

Jun 23, 2009

Bluetooth + GPRS Cellular Telemetry, Part II

The emulator running some demo data, and showing the result.The Bluetooth/GPRS application I've been working on is now functional enough that it might be of use to someone. Feedback and suggestions are appreciated. Currently, the application has been left as a dumb bent pipe, so the mcu has complete control over the data stream (though it must conform to the var1=xxx&var2=yyy......\n format for parsing to work, see code and documentation).…See More

Blog post by John Gantner Jun 23, 2009

4 Comments 0 Likes

Google Earth Live FPV & Cellular Telemetry

This post is about a live (simulated) FPV system using Google Earth, relaying data over a cellular GPRS/3G network. A while ago I saw a commercial OSD setup that used Google Earth to simulate an FPV display. Needless to say, I was immediately smitten. However, video TX gear is expensive and a hassle, so Google Earth here serves as a simulated FPV. Hopefully this will eventually mature into a Google Earth HUD (like the Flight Sim easter egg already in it, but real-life!)…See More

Blog post by John Gantner Jun 11, 2009

1 Comment 0 Likes

John Gantner replied to Bill's discussion 'Anyone want to combine forces in San Diego?'

I think they use a separate channel for the prop pitch. They call it "4D Flying" - it combines helicopter-like hovering and fixed-wing speed. The videos are pretty unreal - they can fly an inverted vertical climb! Take that, hummingbirds.…

Jun 9, 2009

John Gantner replied to Bill's discussion 'Anyone want to combine forces in San Diego?'

I'm not an aerospace engineer, but didn't the SR-71 intakes increase compression because they reflected the supersonic shockwave? I used to use a consumer GPS handheld on some of my projects and the user manual said if either of the two…

Jun 9, 2009

John Gantner replied to Bill's discussion 'Anyone want to combine forces in San Diego?'

Good point on HELIOS - I didn't know it went so high (but of course, $$$). I remember that one disintegrating in midair too though... It's true that there is less air resistance up there, but there is also less thrust available for the…

Jun 8, 2009

John Gantner replied to Bill's discussion 'Anyone want to combine forces in San Diego?'

Sounds like a neat project, though I think your goals may be set a tad high unless your budget has 7 digits. I'd love to collaborate on UAV stuff, I'm in the general area. I'm just starting with UAVs but I have robotics experience. I…

Jun 7, 2009

Bluetooth and 2.4GHz RC Systems

Does anyone know if Bluetooth would interfere with the standard Spektrum-type 2.4GHz systems? I'm writing a JSR-82 app for telemetry transmission, since no phones with GPRS have serial ports anymore. I am worried about interference, however. If necessary, how could I shield the RX or phone without affecting range?

Discussion posted by John Gantner Jun 4, 2009

0 Comments 0 Likes

New OEM Cellular modules on Ebay - $10! (#170335219418)

I'm a lurker but thought I'd share what I found today - hopefully it helps some people build better UAV's. I'm using cellular data too, but I am going the SSoftware2Mobile route. You can probably tell I kinda want to buy them anyways...Someone on Ebay is selling 10 new Nokia GSM modules - the kind you can get direct AT and GPRS access to easily. For $10 each buy-it-now! Obviously they don't know what they have since it seems the store normally sells household items. They're 850/1900 which I…See More

Discussion posted by John Gantner May 30, 2009

0 Comments 0 Likes

John Gantner's Blog

Bluetooth + GPRS Cellular Telemetry, Part II

Posted on June 22, 2009 at 7:14pm 4 Comments 0 Likes

The emulator running some demo data, and showing the result.

The Bluetooth/GPRS application I've been working on is now functional enough that it might be of use to someone. Feedback and suggestions are appreciated. Currently, the application has been left as a dumb bent pipe, so the mcu has complete control over the data stream (though it must conform to the var1=xxx&var2=yyy......\n format for parsing to work, see code and… Continue