"Great post!"
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Francisco commented on Paul Gregory's blog post Building a UAV for photo mapping - Packing it all in
Paul Gregory replied to Tops's discussion Telemetry kit: XtreamBee Board 4V on the 3.3V line!!! Xbee PRO S1 2.4Ghz burned"I have now made the same modification, linking the CTS to 3.3v as in your photo. I now have 4.71V on the +5V pin and 3.30V on the +3.3V pin. The XBee module works in Mission planner.
It is clear that the bridge between the CTS and 5V,…"
Paul Gregory replied to Tops's discussion Telemetry kit: XtreamBee Board 4V on the 3.3V pin!!! Xbee PRO S1 2.4Ghz burned"Thanks for the information. I checked the data sheet you give as a link in your first post. Indeed the XBee Pro 802.15.4 (Series1) which was supplied in my kit is NOT 5V tolerant, while the more powerful XBee-PRO XSC is 5V tolerant on…"
Paul Gregory replied to Mark Harrison's discussion xbee LED docs?"I tried by 2.4GHz XBee system for the first time today. As far as I can see, the BLUE LED indicated power on. The two YELLOW LED's seem to be some sort of timing signal and the RED LED comes on the the modules are transmitting and…"
Paul Gregory replied to Tops's discussion Telemetry kit: XtreamBee Board 4V on the 3.3V pin!!! Xbee PRO S1 2.4Ghz burned"I have a 2.4GHz kit from buildyourowndrones in the UK which I have just got working today. With my initial set up, I measure 4.69V across the GND to + 5V pin (output from the AMP 2 board) and 3.67V across the GND to 3.3Vpin. The 5V input…"
Wilbur Harvey left a comment for Paul Gregory"Another method for flight stabilization is to use a couple of ionizing ration sources to get rid of static electricity, and then measure the electric potential between the wing tips and nose and tail. Free space air, has a voltage gradient of about…"
Paul Gregory commented on Paul Gregory's blog post Building a UAV for photo mapping - Camera Selection"Hi
I am afraid I got sidetracked into trying to build an autopilot - a great danger. The Cularis is neatly packed away ready for another period of spare time - which never seems to happen. Maybe next year.
Sorry I cannot be of any further help at…"
James Harwood commented on Paul Gregory's blog post Building a UAV for photo mapping - Camera Selection"what happened with this project? I am in the process of doing the same thing - still trying to decide on the platform to use. How did yours turn out? I have seen others with good video from the cularis, but I was just wondering why you discontinued…"
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- About Me:
- Retired ex software entrepreneur now growing grapes and making bad wine in Italy
- Hometown:
- Montefollonico, Italy
Paul Gregory's Blog
Building a UAV for photo mapping - Trial Balance
Posted on January 8, 2008 at 11:38am 0 Comments 0 Likes
I have now finished all the sub-assemblies of my Cularis, so before sticking the fuselage together, I decided to do a trial balance to check on the COG. Here it is, poised on the wing
dimples. The airframe, with installed servos, but not motor, battery
etc. weighs 1.1kg including the two steel balls…
Building a UAV for photo mapping - Kit Mods
Posted on December 26, 2007 at 2:24am 0 Comments 0 Likes
First I must thank Jeffrey Johnson who posted a set of images of the Cularis he is building for photo mapping. He has made a really neat modification by moving the rudder and elevator servos from the stock
position in the cockpit, to tail mounting…
Building a UAV for photo mapping - Autopilot
Posted on December 23, 2007 at 8:20am 8 Comments 1 Like
Ahh!! CRASH and BURN!!
I had planned to use the Pico-Pilot and Pico-GPS for the autopilot in my UAV, but I have now discovered that since Jan 2007, they have been classed as MILITARY technology and are controlled by US Export License regulations. Specifically the regulations cover,…
Continue Building a UAV for photo mapping - Packing it all in
Posted on December 22, 2007 at 11:30am 11 Comments 0 Likes
The first image shows the recommended distribution of components for the electric version of the Cularis. (Click for higher resolution). In this configuration, the plane balances at the CGO with 3 weights (supplied in the kit) fixed under the tail plane. The component weight…
Continue Building a UAV for photo mapping - Camera Selection
Posted on December 21, 2007 at 9:30am 7 Comments 0 Likes
I have bought a Pentax Optio A30 to use as my aerial camera. It is similar to a number of the latest generation of sub-compact 10Mpixel cameras and has good reviews, especially in terms of its image quality. It weighs about 160gm with battery and SD memory card and at 58mm, has one of the smallest widths I have found – important for fitting
into the Cularis…
Comment Wall (1 comment)
- At 9:21pm on January 14, 2010, Wilbur Harvey said…
- Another method for flight stabilization is to use a couple of ionizing ration sources to get rid of static electricity, and then measure the electric potential between the wing tips and nose and tail. Free space air, has a voltage gradient of about 120V/meter.
http://en.wikipedia.org/wiki/Sky_voltage
In the early 1970's people made model remote control airplanes using this sensing technique in a feedback loop to stabilize the flight of planes that were basically unstable and not possible to fly by hand. This would allow very cheap, highly controllable UAV's. (GPRS modem, camera + GPS)
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