Gender
Male
About
Location
Madison, AL
About Me:
RC heli and fixed-wing pilot. Software developer for mapping industry.
Please tell us a bit about your UAV interest
UAVs for survey and mapping
Hometown:
Madison, AL
Activity Feed
We have several DJI S900's using Pixhawks, and in the past couple of months, we've noticed the copter "pausing", or at least wide swings in speed from the planned speed. This seems coupled with the inability to hold the planned altitude very well.…
"Thanks, Anthony, for the response.
The copter is well below it's max weight, has been through the auto-tune process, and flies with very good stability and precision. And yes, the small perturbations in roll you identified are waypoints. The lines…"
The copter is well below it's max weight, has been through the auto-tune process, and flies with very good stability and precision. And yes, the small perturbations in roll you identified are waypoints. The lines…"
Can someone explain "Desired Roll" vs. "Roll"?I have an unexplained crash that occurred at the end of a long autonomous flight. Suggestion in the manual on log file analysis indicates differences between desired and actual values might point to a…
"After installing 3.3.1, I noticed a couple of PID values changed: RATE_RLL_IMAX & RATE_PIT_IMAX to 2000 from the earlier 1000 setting. Did the PID loops change such that what was 1000 on 3.2.1 needs to be 2000 to behave the same on 3.3.1?"
Attempts to fly my s900 with pixhawk have resulted in tip-overs multiple times now. This is happening after an upgrade to 3.3.1. After fixing damage from yesterday, I tried a simple test today. In stabilize, I got the copter a little light on the…
"@David - I just ran the numbers thru Mission Planner: With the 20mm lens at 50m, for 80% forward-lap, you need a photo every 12m. My Skywalker 2014 is on the slow end of it's range at 10m/s, so that's every 1.2 seconds. That would yield 0.5"…"
"@David -- At what rate can you trigger the NEX-5? My S100 is less than 1 frame/2 sec. Is the NEX-5 significantly faster? Thx."
"Does anyone know if 1) Canon EOS M can be fired with USB/CHDK script? 2) If so, can it capture at 1 fps when triggered by the autopilot?"
"@Rami -- I'm using CHDK with the script below and the USB port. I use a light controller to change the PWM signal into a simple on/off pulse. Do you think there are CHDK settings that might be affecting the rate?
@title Remote switch AP
:loopif…"
@title Remote switch AP
:loopif…"
"Thanks, Tridge. That's great news. I understand that was added in 3.1 plane, right? I'll upgrade if so.
If it's not too hard to explain, why the 'odd' limits? Will the number eventually grow significantly greater for big mapping missions, or have…"
If it's not too hard to explain, why the 'odd' limits? Will the number eventually grow significantly greater for big mapping missions, or have…"
"Thanks -- looks like it's time for a new camera, but... It seems manufacturers publish a continuous shooting rate, but it's hard to know the rate you can get from the autopilot trigger without testing yourself or finding out from someone who has. …"
"Anything changed here? I still can't seem to write more than about 150 waypoints... I'm using the Pixhawk -- plenty of memory, right?"
I can't seem to get my S100 to take pictures much faster than an expourse every two seconds or so. I'm using the "trigger by distance" method to trigger from the autopilot. I think I've disabled all the camera features that might slow down the…
"Servo Yaw Integral was 1.0 when I was testing with side-slip controller enabled-- reset back to 0.0."
"Yes. I enabled it, but saw no effect. Maybe it's poor tuning, but I expect tuning is mostly about how quickly the plane responds and stabilizes -- I would think on a long flight line, it would eventually show an effect if it's going to work, even…"
"Paul,
I've beat the trim issue to death. The log from 17 Jun is about it good as I can get. The plane is still flying side-slipped, even with left rudder trim and lots of right aileron trim. Any idea (besides trim) as to why? An experiment I could…"
I've beat the trim issue to death. The log from 17 Jun is about it good as I can get. The plane is still flying side-slipped, even with left rudder trim and lots of right aileron trim. Any idea (besides trim) as to why? An experiment I could…"
