Thomas Butler
  • Rockford, IL
  • United States
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Thomas Butler commented on Dr Stephen Prior's blog post New book release: Optimizing Small Multi-Rotor Unmanned Aircraft: A Practical Design Guide
"Additionally, the nice thing about a book, unlike other products, is that it cannot be copied and sold in the US. Thank the USA for copyright law. Ha ha! I might write a book!"
Oct 14
Thomas Butler commented on Dr Stephen Prior's blog post New book release: Optimizing Small Multi-Rotor Unmanned Aircraft: A Practical Design Guide
"I'm waiting for a win on MegaMillions...$658mil today! Seriously, I'd rather see posts by people who have reviewed the book; announcements are fine. PLEASE don't post that you are waiting for shipment; ha!...However, please do post a…"
Oct 14
Thomas Butler commented on Joao correia's blog post GoPro 7 with HyperSmooth, now is the time to remove the gimbal from the drone?!
"Yawn...GoPro 6 had EIS. More hype. Loss of 5% of the image area! A gimbal maintains a parallel relationship with the subject, which this does not; inherent distorting the perspective. I'll wait for GoPro 10 when it really really really works!…"
Oct 2
Thomas Butler commented on Chris Anderson's blog post ETH open sources aggressive quadcopter code
"Could you could add some info on what hardware the software runs on! thanks"
May 9
Thomas Butler commented on Chris Anderson's blog post Hands on review of new LIDARs, from $1,000 solid-state 3D to $5 1D range finder
"That's the latest and greatest 70Ghz technology. 24Ghz has been out for a while. 24Ghz RADAR from Infineon 24Ghz chip is about $7 in single quantity.  The $125 part from TI will no doubt come down to less than $10 each once it is in…"
Apr 21
Thomas Butler commented on Chris Anderson's blog post Hands on review of new LIDARs, from $1,000 solid-state 3D to $5 1D range finder
"Another option and perhaps better solution will be the new RADAR chips from TI. Originally intended for automotive use they are releasing an industrial version too.  None of the problems associated with LASER ranging. These are uses to detect…"
Apr 17
Thomas Butler commented on Kristaps Brass's blog post Using Intel Aero with UgCS
"Nice hardware, but appears to be LOTS of issues with the Intel Aero...IBM-PC and MS Windows deja vu...I ll wait for version 10.0..."
Feb 23
Thomas Butler replied to Prashanth Rajagopalan's discussion Can the GPS be placed inside the drone?
"GPS uses a radio receiver which operates at about 1.5ghz. As long as no RF blocking material blocks the signal (coming from satellites overhead), the GPS will receive data. RF blocking material; metal or carbon fiber (i.e., electrically conductive…"
Nov 11, 2017
Thomas Butler replied to Paul Atkin's discussion How to create an _immediate_ kill switch on PX4/APM?
"@Patrick, Yeah! That's what I was talking about. They use three 24A/190A burst MOSFETS in parallel with a couple of flip-flops set by PWM. Although it is only for 3S, some beefier MOSFETs would fix that. Additionally, probably some…"
Oct 17, 2017

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engineer
Hometown:
Rockford, Illinois

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