About

Gender

Male


Location

Atlanta, GA


About Me:

>Founder of IR-LOCK http://precisionlanding.irlock.com >Developer of IR tracking technology for Drones and DIY Robotics. >Researcher at the Georgia Institute of Technology in Atlanta, Ga.


Please tell us a bit about your UAV interest

>UAV reliability research, especially, non-destructive testing (NDT) for complex-shaped, 3D printed parts. >Tracking tools for UAV automation.


Hometown:

Atlanta


Activity Feed

Thomas Stone replied to Robert Baumgartner's discussion Pixhawk 2 - board damaged (maybe) from factory in Pixhawk 2 User Group
"Hi Robert, 
The glue on the GPS1 connector is normal. It strengthens the GPS1 connector. 
However, the "No GPS" message is not normal. You should contact your distributor/vendor to see if the unit is defective. They will be able to run through some…"
Apr 12, 2018
Thomas Stone commented on Laser Developer's blog post DIY LiDAR scanner using the LW20 and a digital servo
"Nice! Simpler mechanics is always better. "
Feb 21, 2017
Thomas Stone commented on Thomas Stone's blog post Infrared-tracking Gimbal
"@il lak
The sensor can control servos. You may need to have an intermediate MCU (i.e., Arduino) to send the appropriate commands to a BaseCam controller. 
Best,
Thomas"
Jan 7, 2017
Thomas Stone replied to Anthony's discussion image processing for precision landing
"Hi Anthony, 
I think I also saw your post in the Ardupilot.org forum, but I will reply here as well. 
Yes, it seems like 3.4-RC6 requires lidar/sonar for precision landing. 
However, you can test the precision landing feature w/out lidar/sonar by us…"
Oct 24, 2016
Thomas Stone commented on Laser Developer's blog post LW20 LiDAR - half the size, twice the performance, infinitely better.
"Great news! Can't wait to test it out. "
Oct 4, 2016
Thomas Stone commented on Laser Developer's blog post Making connections between ArduPilot and laser altimeters easier
"Very nice! "
Sep 3, 2016
Thomas Stone replied to Anthony's discussion image processing for precision landing
"@Anthony E
Great questions. I can only answer them from the IR-LOCK perspective. They may or may not be applicable to other sensor systems. ... (I will probably add more content later. I have been super-busy lately)

John A.B. is correct when he say…"
Aug 30, 2016
Thomas Stone commented on Thomas Stone's blog post GPS-denied Position-hold w/ 3DR Solo
"@Ian
Sorry for the late reply. I have been quite busy lately.
We (IR-LOCK) have investigated position hold solutions for ~30 meters. I think we could handle 30 meter position hold with minimal modifications to the sensor/beacon hardware. 
However, 5…"
Aug 27, 2016
Thomas Stone replied to Anthony's discussion image processing for precision landing
"Sorry I am late to this interesting conversation. :)  
The reason we (IR-LOCK) have stuck with the beacon system is because we can get very reliable target detection with this technique, at distances of 0 to 15 meters. Here are some detection demos…"
Aug 27, 2016
Thomas Stone commented on Thomas Stone's blog post Solo Smart Drone Lands Smartly: PART 2
"I just 'un-bricked' a Solo, and honestly couldn't explain exactly what I did. I performed at least one factory reset, and I also uploaded a default firmware to the Solo computer.... among other things. 

John is correct that the solid green lights m…"
Jul 7, 2016
Thomas Stone commented on Thomas Stone's blog post Solo Smart Drone Lands Smartly: PART 2
"@Savannah
Which firmware (Pixhawk2) do you have uploaded currently? Also, do you have an IR-LOCK Sensor connected on the I2C bus#1 (w/ magnetometer)?"
Jul 6, 2016
Thomas Stone commented on Thomas Stone's blog post Solo Smart Drone Lands Smartly: PART 2
"@Savannah
This is Thomas from IR-LOCK. 
Here is our preferred setup/hardware/code for precision landing with Solo: link. It is fairly easy for us to setup a Solo/IR-LOCK (now). But when we got started with Solo, debugging was a pain. 

Also, we will…"
Jul 5, 2016
Thomas Stone commented on Randy's blog post Copter-3.4 beta testing starts
"Yay! We will test the Precision Landing feature to ensure everything is still A-ok. "
May 31, 2016
Thomas Stone commented on Laser Developer's blog post The SF11/C laser altimeter - awesome performance for $249
"@Laser Developer
Very helpful. Thanks again!
In the ArduCopter documentation, it suggests that RNGFND_MIN_CM should be set to 5cm for the SF10 (link). So I assumed that it might have a better short-range performance. "
May 22, 2016
Thomas Stone commented on Laser Developer's blog post The SF11/C laser altimeter - awesome performance for $249
"@Laser Developer
Many thanks for the helpful information. We have recommended the SF10/11 rangefinders for many commercial precision landing projects. (btw, I saw the 'discontinued' notice by this distributor: link)
One more performance question: Wh…"
May 21, 2016
Thomas Stone commented on Laser Developer's blog post The SF11/C laser altimeter - awesome performance for $249
"@Laser Developer
I am interested in your comments regarding short-range performance. Are you recommending the SF10/A for short-range applications? I thought this series of units was discontinued. "
May 20, 2016
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