About

Location

Oak Ridge, TN


About Me:

retired mech. engineer


Please tell us a bit about your UAV interest

Have flown fixed wing RC for 25 years, looking for something more technical


Hometown:

oak ridge, tn


Activity Feed

emile 'butch' alline replied to Philip Price's discussion invoke auto tune
"Philip:  I have finally achieved auto tune.  As James says below, you must NOT be moving the sticks when you enter auto tune.  In my case, my trims were not correct.  After I ran auto trim, I could then do auto tune.  As far as I know, there is no…"
Aug 15, 2014
emile 'butch' alline replied to Philip Price's discussion invoke auto tune
"Wind was up even before daybreak, so no tests yet.
James: You said " Check  RCX_TRIM parameters and compare them to exactly what the APM is seeing (I graphed the live values in MP). Either trim your Tx or adjust the parameters".  
How exactly did…"
Aug 13, 2014
emile 'butch' alline replied to Philip Price's discussion invoke auto tune
"I have same problem.  Will try James's solution tomorrow and see if it works...
Stay tuned..."
Aug 12, 2014
emile 'butch' alline replied to emile 'butch' alline's discussion Throttle use in Auto mode in ArduRover User Group
"Thanks, MikeRover.
1. My rover is based on a rock crawler with 4WS and FWD (I removed the RWD motor).  Max speed is ~ 1.8 M/s on grass and 2.2 on hard surface.  This is OK for me.  I am more interested in pursuing smoothness and precision rather…"
Aug 2, 2014
emile 'butch' alline replied to emile 'butch' alline's discussion Throttle use in Auto mode in ArduRover User Group
"Thanks, TCIII, that seems to work.  Any value below 13 does not work on the test stand. This probably depends on ESC used.
I suggest the default be set to 30 to keep other newbies from suffering the same mistake.
Now I can do some tuning!
Thanks…"
Jul 31, 2014
emile 'butch' alline replied to emile 'butch' alline's discussion Throttle use in Auto mode in ArduRover User Group
"Follow up:  Went to larger field and got same results as smaller field.  I still have to use throttle in Auto mode.
I did confirm that RTL works as expected but once again had to use manual throttle in RTL."
Jul 31, 2014
emile 'butch' alline replied to emile 'butch' alline's discussion Throttle use in Auto mode in ArduRover User Group
"Thank you MikeRover for your help.  
Note that I am not deliberately trying to Kickstart and my current Kickstart param = zero, therefore I am looking for normal throttle response to auto mode.
1. Current values: Cruise speed = 0.4, Cruise throttle…"
Jul 31, 2014
emile 'butch' alline posted a discussion in ArduRover User Group
What should the rover do when I switch to Auto mode?  Should the motor start immediately?  In my case, I have to manually move the throttle stick to control speed all the way to the first WP.The only param that seems applicable is AUTO_KICKSTART…
Jul 29, 2014
emile 'butch' alline replied to emile 'butch' alline's discussion SOLVED Erratic speed and no steering in auto mode in ArduRover User Group
"DUH! pilot error again.  
APM output pins reversed, probably related to previous brain fart.

Will try your suggestions. Thanks for your help."
Jul 14, 2014
emile 'butch' alline replied to emile 'butch' alline's discussion SOLVED Erratic speed and no steering in auto mode in ArduRover User Group
"Thanks TCIII,
param file attached as debug.param
distance from home & rover to WP 1 is 288M 
telem enabled, hdop 4, sats 7-8

compass current heading red line is accurate, gold line is accurate, black line jumps all over, green line bisects red and…"
Jul 13, 2014
emile 'butch' alline commented on Jack Crossfire's blog post Brushless direct drive rover
"Brilliant!  Wish more of us would share their experiences."
Jul 12, 2014
emile 'butch' alline posted a discussion in ArduRover User Group
All LEDs solid, all voltages nominal.   Manual and learning modes work fine.  With hundreds of meters to WP, rover goes fwd and rev erratically with no steering in auto mode.Please have a look at my 52 sec. video showing MP…
Jul 12, 2014
emile 'butch' alline replied to emile 'butch' alline's discussion Mapping APM 2.5/6 output pins to arduino mega 2560 pins in ArduRover User Group
"My code is crude but effective but I do not want to put it into public distribution.  However, if you want to play with it, PM me with your email address and I will send it to you "as is, without warranty, etc," ;-)"
Jul 9, 2014
emile 'butch' alline replied to emile 'butch' alline's discussion Mapping APM 2.5/6 output pins to arduino mega 2560 pins in ArduRover User Group
"Unfortunately NO.  As far as I know, the pinouts are different between various flavors of Arduino.
If you are thinking of implementing APM code on a UNO, I do not think it will work due to memory limitations.
I am no Arduino expert though, so feel…"
Jul 9, 2014
emile 'butch' alline posted a discussion in ArduRover User Group
I suspected a bad output on one of my APM 2.5 boards and wrote an arduino sketch to check out the ports.  They were all working OK.  Here is the correlation between APM pin numbers and Arduino pin numbers:APM output pin number          Arduino 2560…
Jul 7, 2014
emile 'butch' alline replied to Forrest Frantz's discussion Mission Planner Mavlink Won't Connect (No Heatbeat Packets Received)
"Thanks GregM.  Problem went away in a weird way.  Shut down computer last night with nothing working, started computer in morning and USB works.  I did absolutely nothing to change the situation.  "
May 24, 2014
More…