"Gregory -
A slight alternative to option 1 would be using a motor controller that can parse the signal to differential. The Sabertooth series do this (check out the datasheet) - although the biggest they have is 60 amps I…"
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Anthony White
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Anthony White left a comment for Michael Weinberg"Differential thrust is not currently possible with the ardurover code directly, but can be accomplished with your motor controller or an additional microcontroller between the ardupilot and your motor controllers.
As for your other requests, I…"
Anthony White commented on Thomas J Coyle III's group ArduRover User Group"I second Doug's sentiment!"
Anthony White commented on Thomas J Coyle III's group ArduRover User Group"DGPS is beginning to be used in smaller vessels, especially in survey work environments.
Would the offsets calculated from running a predetermined course vary with atmospheric or timing conditions? I had discounted that as practical only when…"
Anthony White commented on Thomas J Coyle III's group ArduRover User Group"Differential GPS (D-GPS) is an interesting option from the hobbyist level - while certainly theoretically possible, a lot interdisciplinary problems would need to be solved - primarily coding some fancy math that fits your hardware setup…"
Anthony White commented on Eli Cohen's blog post 3D printed base for 3DR radio"solidworks is ideal! I wish more people posted the accompanying non-stl file on thingiverse...I'll message you my email - Thanks!"
Anthony White commented on Eli Cohen's blog post 3D printed base for 3DR radio"What software did you design this in? I'd like to modify your center piece to accommodate a 3DR radio with a molex connector instead of male USB - and while I could do this from scratch, it'd be nice to save some time with an…"
AdminThomas J Coyle III replied to Anthony White's discussion Ardu-Boat first trial run... in the group ArduRover User Group
"@Anthony,
My two rovers go virtually in a straight line between waypoints without any PID tuning. Having the correct steering direction command in the Autonomus mode is very important as it can be different from the Manul mode.
Regards,
TCIII"
Anthony White replied to Anthony White's discussion Ardu-Boat first trial run... in the group ArduRover User Group"Vincent - you were right / confirmed my suspicion! Flawless performance this morning... no need to tune PID or anything! I will be developing my platform to have considerably more power and endurance, but to have it work so well after only a…"
Vincent van Schijndel replied to Anthony White's discussion Ardu-Boat first trial run... in the group ArduRover User Group"try reversing the roll in mission planner;)"
Kevin Gidley replied to Anthony White's discussion Ardu-Boat first trial run... in the group ArduRover User Group"2 problems I had when first testing a rover.
1) I had the APM mounted right next to the motor, which messed up the compass readings.
2)"Wiggly" behavior. I solved this by turning up the D parameter of the PID…"
james sowell replied to Anthony White's discussion Ardu-Boat first trial run... in the group ArduRover User Group"http://diydrones.com/group/sailing-drone ; you might have better luck here"
Anthony White replied to Anthony White's discussion Ardu-Boat first trial run... in the group ArduRover User Group"Pulled from log:"
Anthony White added a discussion to the group ArduRover User Group
Ardu-Boat first trial run...
Hello everyone!Just got back from the maiden voyage of my Ardu-Boat platofrm (APM 2.5) - and while the eventual end of the trial stemmed from a mechanical problem (gearbox wasn't great) - what I could test of the autopilot had miserable behavior.I think this might stem from the rudder driven steering (rather than front left right wheels as on a car). When switched to auto mode after establishing "safe" waypoints, the boat would turn away from all the waypoints and head towards shore, driving an…See More
Flavio Taborelli replied to Anthony White's discussion Ardu-boat taking to the water! in the group ArduRover User Group"HI,
My boat runs with PID settings
P = 0.9
D = 0.07
I = 0.01
but it is controlled by one motor and one rudder so probably settings will be different. Also my goal speed is around 2 knots, if you plan to go fast reduce P value to prevent flips…"
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- About Me:
- I graduated from Georgia Tech in May of 2012 with a Mechanical engineering degree, and enjoy working on autonomous vehicle projects in my spare time.
- Tell us a bit about your UAV interest
- Boats! Autonomous Boats!
- Hometown:
- Lafayette, LA
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Season Two of the Trust Time Trial (T3) Contest has now begun. The fourth round is an accuracy round for multicopters, which requires contestants to fly a cube. The deadline is April 14th.A list of all T3 contests is here.
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