"One of the individuals working on the Raspberry Pi has been working on a side project, an IO expansion board for the Raspberry Pi. Awesome!
http://www.raspberrypi.org/archives/411"
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Luke Olson commented on Pekka Ahola's blog post Raspberry Pi - A dirt cheap new embedded platform for £15
Squalish commented on Pekka Ahola's blog post Raspberry Pi - A dirt cheap new embedded platform for £15"The word is,it plays Quake 3 on 1 watt of power.
They are still shooting for a $25 USD pricepoint, with an ethernet jack for $35. Are there any UAV tasks that warrant this kind of horsepower?
"
Hamish commented on Pekka Ahola's blog post Raspberry Pi - A dirt cheap new embedded platform for £15"Well this is awesome! hope it works (commercially). Want one.
oh yeah DSL! I use it to check scrapheap computers :D"
Jared Cormier commented on Pekka Ahola's blog post Raspberry Pi - A dirt cheap new embedded platform for £15"Wow, this would be ten kinds of awesome; bookmarked.
16 GB SD card can hold a full blown Linux distro; DSL comes to mind, seems almost made for this, actually."
Jon Keller commented on Pekka Ahola's blog post 10Hz Venus GPS Module + antenna ~ $62"Hi, Rick Steele,
Would you be able to post that firmware update?"
Pekka Ahola commented on Leon's blog post Quadrotor with Wii MotionPlus"Nice work,
I'm actually planning on using wii motion plus and a cheap (< $20 from ebay) 3-axis accelerometer for my quadrocopter stabilisation. I'm using for the arduino though.
ps. Your setup seems to of the same size as mine, any…"
Heiner Leicht commented on Pekka Ahola's blog post 10Hz Venus GPS Module + antenna ~ $62"I use the same chipset in an other (much cheaper; 25 USD) GPS receiver with antenna. See here: http://www.mr-lee-catcam.de/pe_cc_o2_en.htm
Update rate can be scaled from 1 to 10 Hz, lock quiet fast and the current draw is really pretty low."
Mike commented on Pekka Ahola's blog post 10Hz Venus GPS Module + antenna ~ $62"Tom.
GPS altitude accuracy is very different to the horizonatal accuracy - it's the nature of the beast. A barometric altitude, whilst not having great absolute accuracy does not have as wide an envelope of error as GPS - in my experience at…"
Tom Kent commented on Pekka Ahola's blog post 10Hz Venus GPS Module + antenna ~ $62"Pekka: You mentioned something about more accurate altitude, do you often see altitudes that are less accurate? I always though that GPS math was completely 3D, and I guess I wouldn't expect one of the dimensions to be different from the…"
Rick Steele commented on Pekka Ahola's blog post 10Hz Venus GPS Module + antenna ~ $62"Oops, I left out the antenna link here it is."
Rick Steele commented on Pekka Ahola's blog post 10Hz Venus GPS Module + antenna ~ $62"We have tried the Venus GPS Modules from Sparkfun and initially had a bad experience with cold start issues. It was taking anywhere from 5 to 15 minutes to coldstart maybe even longer in some instances. The problem is the sparkfun board ties the vcc…"
Pekka Ahola commented on Pekka Ahola's blog post 10Hz Venus GPS Module + antenna ~ $62"Thanks for the detailed explanation. Though I'm planning on using an old extremely slow motorized glider as a test platform - I think I'll manage for now with my old 1Hz GPS that I have lying around.
Ps. Are there any new reasonably…"
Sami Finnila commented on Pekka Ahola's blog post 10Hz Venus GPS Module + antenna ~ $62"@Pekka: With uBlox you can change the receiver's Kalman filter parameters to "expect" greater accelerations and thus you ought to get better performance. With normal GPS units the problem is that they are not set to expect sudden…"
Pekka Ahola commented on Pekka Ahola's blog post 10Hz Venus GPS Module + antenna ~ $62"Ok, good to know. Does "optimized for air use" mean, that uBox has better and more accurate altitude positioning than other gps-units? Something to do with the location approximation calculations inside the unit?"
3D RoboticsChris Anderson commented on Pekka Ahola's blog post 10Hz Venus GPS Module + antenna ~ $62
"They've had it since April, but I haven't tried one. uBlox is optimized for air use and 5Hz is plenty for us, so we haven't been drawn to this. The comments suggest that long cold-starts are a problem, too."
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Pekka Ahola's Blog
Raspberry Pi - A dirt cheap new embedded platform for £15
Posted on May 6, 2011 at 4:30pm 4 Comments 2 Likes
10Hz Venus GPS Module + antenna ~ $62
Posted on October 17, 2009 at 3:11am 10 Comments 0 Likes
Just came across a "new" module from Sparkfun, that promises 10Hz update rate and has a binary protocol. Does anyone in the community have any experiences working with one of these?
Venus GPS Module
SMA… Continue
Venus GPS Module
SMA… Continue
How to make a more stable UAV plane platform.
Posted on March 14, 2009 at 4:57pm 6 Comments 0 Likes
Ever heard of "Moment of Inertia"? Neither had I, but it's quite simple really.
Object with the most of it's weight at the center of it's gravity is easier to rotate than one with the weight on the outer edges. So why put all the electronics and batteries in the center under the wing. By distributing the weight to the wings, should create a platform that has steadier flight characteristics.
More on this and a few pictures in my… Continue
Object with the most of it's weight at the center of it's gravity is easier to rotate than one with the weight on the outer edges. So why put all the electronics and batteries in the center under the wing. By distributing the weight to the wings, should create a platform that has steadier flight characteristics.
More on this and a few pictures in my… Continue
OpenWrt UAV platform
Posted on March 9, 2009 at 8:48pm 7 Comments 0 Likes
My idea is to use OpenWrt + Arduino for a futureproof/scalable UAV patform. I'm planning to do some testing in the spring with the basic Fonera router flashed with OpenWrt Kamikaze 8.09.
This setup however doesn't have USB-ports that would enable live streaming webcam, 3G modems and in-flight high quality images through gphoto2 and a digital camera. I'm waiting to see how much the just finalized Fonera 2.0 with USB costs, but I'll still probably go with the… Continue
This setup however doesn't have USB-ports that would enable live streaming webcam, 3G modems and in-flight high quality images through gphoto2 and a digital camera. I'm waiting to see how much the just finalized Fonera 2.0 with USB costs, but I'll still probably go with the… Continue
Comment Wall (1 comment)
- At 4:47am on May 12, 2009,
Akram Habib said… - Hi Pekka,
You mentioned that you used an Accelerometer on your previous message. Which Accelerometer were you using? I am looking for a two-Axis if you know of any with simple installation process. I am tying to test the accuracy of the result I have obtained for the tilt compensation.
Thanks
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