About

Gender

Male


About Me:

UAV, RC, Aerospace Enthusiast


Please tell us a bit about your UAV interest

Aerospace Engineering degree from UCSD. Currently work at on small UAS vehicles. At home: aerial photography/videography and the systems involved in that work


Hometown:

San Diego


Activity Feed

Jonathan M commented on Scott Edwards's blog post Organizing Against Anti-Maker Legislation in Oregon
"A good post I read recently:
"All of this pending legislation is a knee jerk response by legislators responding to "concerns" posed by their constituents. The bottom line is none of the legislation is valid or enforceable, airspace in the USA is con…"
Feb 20, 2013
Jonathan M replied to Randy's discussion AC 2.9.1 vs 2.8.1 GPS accuracy
"Personally, I think Loiter has improved, but I am getting random cut outs.  In other words, I will be in loiter behaving fine, then it will start to drift (lose GPS).  It didn't seem to do this with V2.8.1+ older GPS FW (whatever came on it last yea…"
Feb 18, 2013
Jonathan M posted a blog post
This may or may not be old news, but I thought it worthy of a post since many of us reside in this lovely state (including 3DR):http://sd20.senate.ca.gov/news/2012-12-03-senator-padilla-introduce...;
Feb 11, 2013
Jonathan M replied to Randy's discussion ArduCopter 2.9 / 2.9.1 released
"Hey guys,
Just wanted to give a report.  I have been flying v2.9 for probably 20 or so flights - generally long 10-12 min once.  Mostly in stabilize, and it flies beautifully.
My setup:  TBS discovery, 880kv motors, 9x5 graups, 4s, RTF ~1.65kg,  APM…"
Feb 6, 2013
Jonathan M commented on Duran - ALTI's blog post Video - SteadiDrone QU4D
"It's counter-intuitive to me as well, but there is plenty of evidence suggesting that ND filters help with jello.  I myself have seen it as well.  Heck, just fly at noon and then at dusk with a Gopro and you will see the difference"
Jan 31, 2013
Jonathan M commented on Duran - ALTI's blog post Video - SteadiDrone QU4D
"Also, have you had similiar result (no jello) in full daylight?  At least with the gopro, lower light situations can give footage with no jello a lot of times where full sunlight gives jello.  This has been tested true quite a few times on the gopro…"
Jan 29, 2013
Jonathan M commented on Duran - ALTI's blog post Video - SteadiDrone QU4D
"Thanks Robert.  Could you post some pictures?"
Jan 29, 2013
Jonathan M commented on Duran - ALTI's blog post Video - SteadiDrone QU4D
"Care to share your method, R?  Maybe you mentioned it in the Rusty/Seismic gimbal thread on the other forum.."
Jan 29, 2013
Jonathan M commented on Duran - ALTI's blog post Video - SteadiDrone QU4D
"Duran,
I recommend looking into isolating the motors as a second layer of isolation.  Myself and many others have had good success with this riding the last bit of vibes that cause jello.  I didn't mean to sound harsh in my previous post - your jell…"
Jan 29, 2013
Jonathan M commented on Duran - ALTI's blog post Video - SteadiDrone QU4D
"Really really awesome video.  I like that quad a lot, but I think a bit more can be done on the vibration isolation.  Jello bugs me to no end. If that video had no jello, I probably would be buying one today"
Jan 28, 2013
Jonathan M replied to Gary McCray's discussion Vibration Isolation and Dampening of APM / PX4 for version 2.9
"Really good read.  I would like to point out that many people (myself included) have had success using motor isolators in conjunction with a second layer of isolation - when it comes to dealing with rolling shutter or "jello" for cameras like the go…"
Jan 27, 2013
Jonathan M replied to Randy's discussion ArduCopter 2.8 / 2.8.1 released
"Randy,

Just a question:  Is inertial aided alt hold automatic with v2.9+? I noticed the parameter AHRS_BARO_USE, which is disabled currently on mine.  My guess is that is for something else."
Jan 11, 2013
Jonathan M commented on Duran - ALTI's blog post New SteadiDrone 2013 QU4D - With APM2.5 as always
"Will you be offering just the frame?"
Jan 10, 2013
Jonathan M replied to Randy's discussion ArduCopter 2.8 / 2.8.1 released
"Does anyone have a log screenshot of RAW accel data that shows what vibration levels SHOULD look like?  The reason I ask is because I am not sure I know what "acceptable" level of vibes on this system actually is.  I have a TBS Discovery, which is a…"
Jan 9, 2013
Jonathan M replied to Randy's discussion ArduCopter 2.8 / 2.8.1 released
"Just flew v2.9.1 on my disco and it's really good.  Love the new alt hold. 
Auto-trim did not work for me. I was completely sideways.  So i just manually tweaked the AHRS parameters to make it level. Seemed to work"
Dec 30, 2012
Jonathan M replied to Jonathan M's discussion Gimbal Code Questions
"Sorry.. this is what I am trying to build: http://www.rcgroups.com/forums/showthread.php?t=1793759
And I want to use my APM2 to control it"
Dec 30, 2012
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