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Charlie's Discussions

3DR Pixhawk IMU2 Accelerometer provides noisy data, worse than IMU1

Started this discussion. Last reply by Charlie Mar 27, 2016. 2 Replies

I posted this in the copter 3.3.x forum, perhaps it was the wrong place? Reposting in the hope of getting some insight, google has let me down and I can't seem to find anyone else with this issue…Continue

Tags: Accelerometer, IMU2

3DR Pixhawk IMU2 Accelerometer noise

Started Mar 16, 2016 0 Replies

I have recently been carrying out mapping flights in somewhat more turbulent and windy conditions and it has brought to light a possible issue with noise in the accelerometer data from IMU 2.…Continue

Tags: Z, axis, INS_USE2, noise, SNR

CHDK, KAP Script and accurate timestamping

Started this discussion. Last reply by David Tipping Apr 9, 2016. 13 Replies

I've been trying to improve the accuracy of the geotagging of images produced using a Canon S100 running CHDK and the KAP lua script, shutter triggered by Pixhawk via a CamRemote device.I've been…Continue

 

Charlie's Page

Latest Activity

Rafael commented on Charlie's blog post Precision geotagging images using Emlid Reach, Canon S100, CHDK, KAP script and RTKlib – Proof of concept
"Hi, I´m running some test with CHDK, and tuffwing precise geotag cable. The precise geotag cable is able to record CAM events when using it with pixhawk, so I can get the exact moment when the obturer of the camera moved to take the…"
Aug 22
Charlie commented on Kristaps Brass's blog post UgCS 2.9 Is Now Live
"Is there a possibility of a trial licence? The most interesting feature is the ability to import a DEM but $2000 is a lot to test it."
Jun 21, 2016
Eladio L. García de la Morena commented on Charlie's blog post Precision geotagging images using Emlid Reach, Canon S100, CHDK, KAP script and RTKlib – Proof of concept
"I'm not an electronics expert but it looks like a LED working as a light sensor, I guess that with a small amplifier to achieve sufficient voltage to trigger tagging (I do not know what is the minimum for pixhawk but it must be lower than 5V).…"
Jun 5, 2016
Charlie commented on Charlie's blog post Precision geotagging images using Emlid Reach, Canon S100, CHDK, KAP script and RTKlib – Proof of concept
"that does look a good solution - will be interested in the result of your investigations..."
Jun 5, 2016
Eladio L. García de la Morena commented on Charlie's blog post Precision geotagging images using Emlid Reach, Canon S100, CHDK, KAP script and RTKlib – Proof of concept
"Hi,S100-s110 cameras have no option for hotshoe but I have found this very interesting alternative to precise geotagging: http://tuffwing.com/support/Install_a_canon_precision_geotag_cable.htmlI am going to investigate about it...Regards"
Jun 4, 2016
Charlie replied to Forrest Frantz's discussion Vibration--Finally Solved ... The Frantz Strut
May 26, 2016
Charlie replied to Forrest Frantz's discussion Vibration--Finally Solved ... The Frantz Strut
"set the ins_use2 parameter to 0 I'll reenable imu2 and get some logs - thanks very much!"
May 26, 2016
Charlie replied to Forrest Frantz's discussion Vibration--Finally Solved ... The Frantz Strut
"Brilliant tool, thanks very much. Although my vibration damping method is primitive (blocks of hobbyking orange latex top and bottom of the pixhawk, holding it in slight tension between top and bottom plates) compared to yours pleased to get good…"
May 23, 2016
Eladio L. García de la Morena commented on Charlie's blog post Precision geotagging images using Emlid Reach, Canon S100, CHDK, KAP script and RTKlib – Proof of concept
"Thank you very much for your post."
May 8, 2016
Darrel Maddy commented on Charlie's blog post Precision geotagging images using Emlid Reach, Canon S100, CHDK, KAP script and RTKlib – Proof of concept
"Thanks Charlie. I did wonder whether using radio RTK would be just another thing to go wrong. I am happy post-processing so I will wait and see. I don't closely monitor the emlid forum but your point about antennae is interesting - I have a…"
May 5, 2016
Charlie commented on Charlie's blog post Precision geotagging images using Emlid Reach, Canon S100, CHDK, KAP script and RTKlib – Proof of concept
"Hi Darrel, will be very interested in how Smart RTK and Reach compare! London is pretty well supplied with base stations. I did try surveying a Reach base station point and then using that to provide the reference for post processing the rover, but…"
May 5, 2016
Darrel Maddy commented on Charlie's blog post Precision geotagging images using Emlid Reach, Canon S100, CHDK, KAP script and RTKlib – Proof of concept
"Charlie, Thanks for sharing, I am about to deploy both  reach and smart rtk to see which works best with arduplane and copter. Are you planning to do real time correction via mavlink  or always post-process?  You are lucky to have…"
May 5, 2016
Charlie commented on Charlie's blog post Precision geotagging images using Emlid Reach, Canon S100, CHDK, KAP script and RTKlib – Proof of concept
"Thanks very much - this was the first result after an initial trial which produced surprisingly good results, so hopefully can improve things with a bit more work."
May 5, 2016

Moderator
MarioSpeedwagon commented on Charlie's blog post Precision geotagging images using Emlid Reach, Canon S100, CHDK, KAP script and RTKlib – Proof of concept
"I was glad to see that your quality report shows that you verified accuracy internally per Pix4D's instructions. I spent 2 weeks banging my head against a wall trying to get an RTK eBee distributor to process a data set that way.  Results…"
May 5, 2016
Charlie commented on Charlie's blog post Precision geotagging images using Emlid Reach, Canon S100, CHDK, KAP script and RTKlib – Proof of concept
"It was using the Reach 3.3 release, I haven't yet tried 3.4. Unfortunately the less than ideal positioning of the ground plane for the Reach antenna relative to the M8N unit causes significant degradation of the M8N performance - not to the…"
May 5, 2016

3D Robotics
Chris Anderson commented on Charlie's blog post Precision geotagging images using Emlid Reach, Canon S100, CHDK, KAP script and RTKlib – Proof of concept
"Great work. Was this using the beta Copter 3.4 code with native Reach integration? And did you have a chance to compare the Reach RTK data with the M8N?"
May 5, 2016

Profile Information

Please tell us a bit about your UAV interest
Mapping, mainly
Hometown:
London

Charlie's Blog

Precision geotagging images using Emlid Reach, Canon S100, CHDK, KAP script and RTKlib – Proof of concept

Posted on May 5, 2016 at 4:30am 12 Comments



We have been using a Canon S100 running CHDK and KAP script for mapping and modelling using Pix4d for a while, and thought it might be useful to share the results of some testing of the possibility of…

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