Arko
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Arko's Discussions

Sensitive throttle - No low throttle

Started this discussion. Last reply by Stephen R Mann Jan 16, 2013. 14 Replies

Hi,So my quad had been sitting around for a few months and I decided to upgrade the software and try to fly it. It's a stock 3DRobotics kit. I downloaded the latest version of Mission Planner 1.2.29…Continue

Defective L3D4200D?

Started this discussion. Last reply by Arko Jan 6, 2012. 1 Reply

I need some help identifying an issuing I'm having with the L3D4200D 3-axis gyro. Attached is a screenshot of a data capture I took. Now this is just the sensor being tilted forward then backward.…Continue

Tags: noise, defective, L3D4200D

Kalman Filter Tuning Issues

Started this discussion. Last reply by Sufana Dan Dec 18, 2013. 1 Reply

So over the past few weeks I've been stuck on what seems to be a very difficult problem. I have a quadrotor I'm working on and I have implemented a Kalman Filter on it. Now, the Kalman Filter is…Continue

Arm Cortex-M3 based Quadrotor Board

Started this discussion. Last reply by John Leichty Aug 24, 2011. 32 Replies

So for the past two months I've been working on a quadrotor project, and I've designed an ARM based board just for it. Contains a TI LM3S9B96 ARM Cortex-M3 (not out yet, some how convinced TI to send…Continue

Tags: quadrotor, uav, rotor, quad, drone

 

Arko's Page

Latest Activity

Sufana Dan replied to Arko's discussion Kalman Filter Tuning Issues
"Hello. I've been having the same problem and i've been trying to fix it for one week now. Can you please tell me what you did to solve this issue? Thanks"
Dec 18, 2013
Stephen R Mann replied to Arko's discussion Sensitive throttle - No low throttle
"That's clearly a defective part. In my case I don't trust a single Velcro strap.  In the photo below (which was of my bent landing gear, not the batteries)  You can see that I have two Velcro straps, and (you…"
Jan 16, 2013
Arko replied to Arko's discussion Sensitive throttle - No low throttle
"Ok, so an update in case someone in the future has this same problem. I ended up adding an ultrasonic sensor to help the altitude state estimation. I just trusted the code, slowly brought up the throttle and it took off and hovered! I did two or…"
Jan 15, 2013

T3
Richard Boyhan replied to Arko's discussion Sensitive throttle - No low throttle
"Stabilize just allows for much more stable flight. You still have control over throttle. Even in ALT HOLD and LOITER modes allow you control throttle and change altitude. Just remember when in these flight modes you will need to move the throttle…"
Jan 11, 2013
Arko replied to Arko's discussion Sensitive throttle - No low throttle
"Thanks for the suggestions, I'll need to make some time to run out at test it at a park.  My question is this, does STABLIZE have a pid loop on altitude?  I really would like manual throttle control to get it in the air, so that I…"
Jan 11, 2013
Stephen R Mann replied to Arko's discussion Sensitive throttle - No low throttle
"Looks pretty normal to me.  But, like Richard said, get it off the ground.  You should be able to hover with 40-50% throttle.  I would get some colored tape or something to make sure you know which way is forward.  I put whiffle…"
Jan 9, 2013

T3
Richard Boyhan replied to Arko's discussion Sensitive throttle - No low throttle
"I checked out your video, boy does that bring back memory's. and to think its only been 6 months and $1000 with of parts. LOL. Your copter looks fine, give it a bit more throttle and get it up about 6 to 10 feet and try to hold altitude. Be…"
Jan 9, 2013

T3
Richard Boyhan replied to Arko's discussion Sensitive throttle - No low throttle
"Grass is your friend. You got to find a grasses field to test from. Especially if you are not 100% sure of the flight. I'm always on the look out for grass fields to fly from, plus always checking the weather and wind. I sometimes think its…"
Jan 9, 2013
Arko replied to Arko's discussion Sensitive throttle - No low throttle
Jan 9, 2013
Arko replied to Arko's discussion Sensitive throttle - No low throttle
"Hmmm, does it take off and stabilize fairly quickly? It just seems like if I were to let it free it would just fly up very quickly. I remember it having much finer controls, I could spin the motors up and leave them at a low idle on the ground.. My…"
Jan 9, 2013

T3
Richard Boyhan replied to Arko's discussion Sensitive throttle - No low throttle
"Do you know anyone that might have a receiver you could borrow and test with? I realized that when I fly, my copter the motors spin pretty fast and it takes at least 50% throttle to lift off. I can't tell the differnce in speed by looking at…"
Jan 9, 2013
Arko replied to Arko's discussion Sensitive throttle - No low throttle
"I do not. I noticed on the data telemetry that the controls look fine."
Jan 9, 2013

T3
Richard Boyhan replied to Arko's discussion Sensitive throttle - No low throttle
"Do you have another receiver you can use to test with? I had a bad receiver that gave me problems with my throttle twitching."
Jan 9, 2013
Arko replied to Arko's discussion Sensitive throttle - No low throttle
"I've calibrated the ESC's multiple times. All flight modes are set to stabilize with "simple mode" off. I have not setup any fail safe in mission planner. I have calibrated the transmitter. The throttle curve on the controller is…"
Jan 9, 2013

T3
Richard Boyhan replied to Arko's discussion Sensitive throttle - No low throttle
"Some things come to mind. Have you calibrate all your ESC? Do you have flight modes setup on your transmitter? Do you have fail safe setup in Mission Planner? Did you calibrate your transmitter in Mission Planner? Also, your transmitter can be…"
Jan 9, 2013
Arko posted a discussion

Sensitive throttle - No low throttle

Hi,So my quad had been sitting around for a few months and I decided to upgrade the software and try to fly it. It's a stock 3DRobotics kit. I downloaded the latest version of Mission Planner 1.2.29 and uploaded the quadrotor firmware it came with.I went through the wiki and followed all the instructions including the ESC calibration. After that I decided to do a throttle ramp up to see how sensitive the throttle is (test was done without blades). I barely touched the throttle (~2%) and the…See More
Jan 9, 2013

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About Me:
Electrical Engineer
Please tell us a bit about your UAV interest
Quadrotors
Hometown:
Los Angeles

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