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Chris Anderson's Discussions

Feedback on new manuals

Started this discussion. Last reply by Gustav Kuhn Apr 14, 2013. 130 Replies

Submit your ArduCopter configuration files here

Started this discussion. Last reply by Finnius Mar 29, 2014. 41 Replies

ArduCopter 2.3 released

Started this discussion. Last reply by JeffBetts_KK4MTC May 21, 2012. 1073 Replies

 

Chris Anderson's Page

Profile Information

About Me:
I'm CEO of 3D Robotics and founder of DIY Drones. I'm the former Editor in Chief of Wired Magazine, author of The Long Tail (Hyperion, 2006), FREE (Hyperion, 2009) and Makers (Crown, 2012) and founder of GeekDad.com

You can find more about me at my About.me page here: http://about.me/andersonchris
Please tell us a bit about your UAV interest
Fixed wing and quads. Mostly for fun and development. With kids as often as they allow!
Hometown:
Berkeley, California

Latest Activity

Tom Jakel commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"@Thomas no problem I love these types of discussions. It just so happens that I do what would be a hobby for me as a job. The value in the HG4930 is the sensors AND the calibration. On the HG1120 the value is in the calibration. As far as the value…"
16 hours ago
Thomas Butler commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"@Tom, I think I can speak for everyone listening in and commenting on this thread that your participation is excellent. It is rare that a person working at a component manufacturer ever gets involved in this sort of dialog. Thanks for being in the…"
17 hours ago
Tom Jakel commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"@Thomas Butler it is no secret that the Honeywell HG4930 uses Honeywell's own bulk micromachined MEMS Inertial Sensors. The HG4930 has noise performance that is 5x better than the ICM20602. The HG4930 also has an RMS gyro bias over temperature…"
20 hours ago
Thomas Butler commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"@Chris, while I have your attention, how about upgrading this arcane forum software used by DIYDrones. At least, add the ability to print ALL of the posts for a thread (very common on the majority of forums today) so we don;t have to wade through…"
yesterday
Thomas Butler commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"@Tom HW specifies at room temperature too as do most vendors, and most vendors (Invensense,et al) have a "percent sensitivity change vs temperature" error correction; same difference as HW's stated value at operating…"
yesterday
Curt Olson commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"Assuming apm/px4 is running their ekf with a 10hz gps, those systems only have to coast on IMU for about 1/10 of a second between corrections.  I know vibration can cause weird things to happen, but outside of that, the big driver of attitude…"
yesterday
Tom Jakel commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"@Rafael Mendy there are quoted values on the HG1120 for full temperature parameters. What we have found is that users confuse them for room temp specs and then discount the IMU based on that. I will say that most of our customers are users who tried…"
yesterday

100KM
DavidJames commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"@ Tom B. ""one of the reasons that the Pixhawk autopilot has been so successful has been the remarkably low noise level of the MPU6000s." ...  Well probably actually because the software/hardware is adequate to do the job and is…"
yesterday
Rafael Mendy commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"@ Tom Jakel, Anyway, the price for such room temperature performance ( second table of datasheet ) is very high. I think the datasheet must show the advantages. Maybe if other manufacturers indicate their performance in full temperature range,…"
Saturday
Rafael Mendy commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"@ Tom Jakel, Thanks. I mean something like these explanations that clarify their advantage over much cheaper alternatives. I think it's nonsensical that a datasheet couldn't explain the advantage of a product. If specs can't show the…"
Saturday
Rafael Mendy commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"@ Tom Jakel, Thanks. I mean something like these explanations that clarify their advantage over much cheaper alternatives. I think it's nonsensical that a datasheet couldn't explain the advantage of a product. If specs can't show the…"
Saturday
Tom Jakel commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"The specifications of so many IMUs that you are quoting are at room temperature only, the Honeywell devices specs are over the full temperature range from -40 to 70 C. There are so many parameters that are calibrated for in the Honeywell…"
Saturday
Rafael Mendy commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"@Thomas, I think HG1120 is not an AHRS but an IMU unit. it means that it's output is not Attitude data but raw or processed data of angular rates and accelerations ( most processed outputs are delta angular rates and accelerations ) As i…"
Saturday

3D Robotics
Chris Anderson commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"Thomas, you're mistaken on the development costs. Both the hardware and the software teams that brought Pixhawk and its software to market were 3DR employees or contractors at the time. Total development costs were in the millions of dollars.…"
Friday
Thomas Butler commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"@Rafael, The difference is one is an AHRS IMU and the other are discrete sensors.. Regarding Pixhawk vs HGxxxx the difference is one is a purpose built AHRS IMU device; the Honeywell IMU, The other (Pixhawk,et al) is a controller that does its own…"
Friday
Rafael Mendy commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"So I'm confused after seeing the specification of Honeywell HG1120. The question is that what is the real advantage of this expensive imu with respect to many other much cheaper alternatives? nether ARW nor in-run bias stability are comparable…"
Friday
Thomas Butler commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
""one of the reasons that the Pixhawk autopilot has been so successful has been the remarkably low noise level of the MPU6000s." ...  Well probably actually because the software/hardware is adequate to do the job and is CHEAP at <…"
Thursday
Tom Jakel commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"David, ARW is not the end all be all of parameters that matter in an inertial navigation system. It certainly is important but there are many other IMU specs to consider. As always which of the specifications are most important depends on what you…"
Thursday

100KM
DavidJames commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"Tom,   One of the key parameters for an inertial navigation measurement unit for a navigation system like the Pixhawk, that is assisted with a GPS, is the angle random walk level of the gyros.    The HG1120s are not that…"
Wednesday
Thomas Butler commented on Chris Anderson's blog post How do modern open source autopilots compare to aerospace-grade IMUs?
"Like Windows Vista the MPU9250 is obsolete as is the Pixhawk. Try using a mainstream Pixhawk clone and/or controller with a sensor of today such as the ICM-20602; The best made at this time by Invensense (even though they have "newer"…"
Wednesday

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Chris Anderson's Blog

Is it a rocket? A ducted fan-copter? Both?

Posted on January 25, 2019 at 8:17pm 0 Comments

I dunno which it is, but it's really DIY and interesting, and that's all that counts. From Hackaday:

Quadcopters are familiar, and remote control planes are old hat at this point. However, compact lightweight power…

Continue

Ion drive drone -- NO moving parts!

Posted on November 21, 2018 at 3:30pm 7 Comments

From Ars Technica. I played with ion drives a long time ago, but never got anything this large to lift. Great work!

The Johnson Indoor Track at MIT probably won't go down in history in the same way as…

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Just a glimpse of the daily Dronecode flight testing

Posted on October 25, 2018 at 7:30pm 0 Comments

Just another day at the Dronecode flight testing line. Want to see the logs? They're all here, including 3D replay…

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What we're doing at our sister site, DIY Robocars (crazy fast autonomous car racing)

Posted on October 21, 2018 at 2:30pm 8 Comments

Ten years ago, when I started this site, we were solving some hard technical problems in aerial robotics (such as getting drones to actually fly without crashing!). Now those problems are largely solved (and many of us went on to found companies that today use drone data, rather than making drones themselves), my inner geek took me to the next set… Continue

Comment Wall (119 comments)

At 5:58pm on July 11, 2007, Jeffrey Johnson said…
Great talking to you today. We are on it with using your designs here, and look forward to dovetailing our efforts. Power to the PictEarth People!
At 10:13pm on January 2, 2008, Dhrumil said…
Thanks for setting this up.
At 12:12am on February 8, 2008, Mark L said…
Hey Chris,

I just read your post on UAVs and I'm wondering if there's anywhere that one could purchase a pre-made UAV...couldn't find one on ebay.
I run a network of websites, www.ballerhouse.com, and am considering featuring a UAV article. Can you point me in the direction of where someone could purchase one? If so, what other info should my readers know?
Thanks!
Mark L
markl@ballerhouse.com
At 12:17am on February 8, 2008,
3D Robotics
Chris Anderson
said…
The cheapest commercial one is around $7,000 (cropcam.com). The cheapest *good* one is around $10,000 (http://www.procerusuav.com/). That's why we started this site, to bring the price down below $1,000.

We're *DIY* Drones--buying one premade isn't the point ;-)
At 6:41pm on February 28, 2008,
T3
William Premerlani
said…
Chris,
If you want to do a Q&A with me, that would be fine.

The reason for the board is that my son and I thought it would be fun to build our own board, develop theory, and write firmware. We were inspired by Maynard Hill, who came to town and gave a talk.
We got our feet wet with a rapid-prototyping board mounted on an RC truck, and then build our own board for a sailplane. We bought our parts from SparkFun. Nathan Seidle, the ownder of Sparkfun, asked me what we were doing, I told him, he offered to build a surface mount board for me.
My son and I spent a few delightful summers getting the firmware working. At the time, our goal was to play, to just do some interesting things with it, without any goal in mind. When we were done, we had something that worked to our satisfaction, Nathan asked if he could sell it, we gave him permission.
We recognized that what we had was not a full-fletched autopilot, but that it might be interesting to anyone wanting to tinker with the controller. They could build on our firmware, if they wanted, or start from stratch, if they were ambitious.
By the way, the main reason we used assembly language was that my son had never written any, and he wanted to learn. He had used lots of other languages, but not assembly.
As far as what people are doing with my board, you probably have more information than I have!! The only person I've talked to so far is a member of diydrones. All I know is that the board is selling well at SparkFun, with no complaints.
By the way, the reason the board has been backordered for so long is that the vendor of the GPS replaced their ET301 with an ET312 at the same time that SparkFun was automating their board production, resulting in some defective boards. Even after we worked out the hardware problems, there was a subtle change in the ET312 that caused some problems. Every board that SparkFun builds is tested with the full firmware running, and the boards were not passing. We finally figured out what was wrong, production is resumed, I guess they are catching up on backorders.
All of the work my son and I was deliberately done in a vacuum...we didn't do any research on what other people were doing. We made some mistakes (that was the point) and had some fun.
My background is an electrical engineer with strengths in control theory, mathematics, and theory of flight.
I work at GE's research labs, I've been there for 33 years.
You might want to do a Google on "William Premerlani" to see what I have been up to. Much of it has to do with software development...you gave me a good chuckle when you said in your review that you wondered why we hadn't used C...the answer is, it would have been too easy!!!
Bill
At 10:52pm on March 22, 2008, Elisa said…
any time if u like to have a wet dip & country village food, come over try our our boats,(planty of spcae for plane flys
elisa
At 6:02pm on March 26, 2008, T-Rex said…
I heard you on Talk of the Nation today...great job! I did not get to hear the whole show, but definately heard the part about your "robotics" site and 3-axis accelerometers. You, my friend, rock!

By the way, thanks for the advice about starting out in R/C with a foamie...else I would not have made it past my first flight attempts.
At 6:27pm on March 26, 2008,
3D Robotics
Chris Anderson
said…
Thanks! I wanted to say "3-axis MEMS accelerometer" but I held back for the sake of the NPR audience ;-)
At 10:44pm on April 4, 2008, Simon Pan said…
Hey Chris,

I won honorable mention, best in category, best in engineering, 550$, and an internship offer, at the state science & engineering fair. (The winners were a guy who did computer simulations of bird flu epidemics to determine the best method to distribute a limited supply of antivirals, a girl who developed an advanced, complex robotic vision algorithm which could detect blobs in foggy areas and high altitude ranges, and a guy who figured out a method to stem the growth of certain forms of cancer, so it was a humbling experience).

I just wanted to thank you for making this website and for your great documention and projects, because without them I'd probably still be trying to figure out how to connect the GPS receiver to the Stamp.

Thanks!

- Simon
At 8:26am on May 10, 2008, Huckleberry said…
Thanks Chris,

Been following along for some time (geekdad) and just bought a Blubberbot for something to do over the summer holidays... thinking about the project possibilities for my kids in electronics 11/12 ... hmmm blimp racing? Anyway, great to be here.

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