About

Gender

Male


Location

Glen Cove, NY


About Me:

I am an architect interested in photography of houses, commercial buildings, and property. Flying under the radar so to speak. Recreational purposes only!!


Please tell us a bit about your UAV interest

I am building a hexacopter specifically for photography.


Hometown:

Glen Cove


Activity Feed

Harry Courter replied to Kane's discussion What happens if use Li-Po battery at max c-rating???
"Diven is correct, but more important is the following,
As amperage increases under load the voltage drops.  Called voltage lag.  This drop in voltage increases as your actual amperage approaches the C rating for your battery.  When the voltage lag c…"
Nov 27, 2017
Harry Courter replied to Sudharsan R's discussion ESC,Battery,Motor selection for quadcoter
"You have a large number of variables to consider, and each choice you make will effect the other issues, and your final results.  You cant make an useful decision on any of these issues with a table provided with a motor, and understand the effect o…"
Oct 14, 2017
Harry Courter replied to jbabio's discussion Current sensing (safely) for Heavy Octo?
"jbabio, I  have a heavy Y6 built a few years ago and still in the air.  In my case I have three parallel 5s, 5000mah batteries.  It works for me and my Y6, but I would not recommend three parallel batteries as this creates battery issues you can not…"
Oct 12, 2017
Harry Courter replied to Tim's discussion Batteries
"When choosing components for your project you must first use a program like ecalc.ch to estimate the performance of the system and provide predictions of the flight time, current, throttle at hover, and much more.  It sounds like you currently just…"
Mar 29, 2017
Harry Courter left a comment on PIXHAWK
"Grant:
I use this site for regular electronic components.  Not for the strictly RC stuff.
https://www.sparkfun.com/categories"
Mar 24, 2017
Harry Courter replied to Evan Palmer's discussion Turnigy Trust 70A Issues in PIXHAWK
"Im happy to help.  Lots of good advice and support on this site and the others.  I have learned everything from the wikis and the blogs.  
Good luck moving forward!"
Mar 23, 2017
Harry Courter replied to Sriram's discussion Pixhawk Stability in PIXHAWK
"Your first flight was totally in "position hold" mode?  You need to start with stabilize mode, then move to alt hold mode, then to loiter.  Only in this order can you really judge performance.
Until you succeed with completing the autotune routine n…"
Mar 20, 2017
Harry Courter replied to Rado Ino's discussion Voltage of battery going up and down all the time
"See my comments on this post , previous page.
Voltage Lag is a potential cause of your problem.  A good review of your logs can confirm or deny this.  Compare the battery voltage and current over time.  As current go's up voltage go's down.  When yo…"
Mar 13, 2017
Harry Courter replied to Peter Arnold's discussion Pixhawk Hex Take Off Stability problems in PIXHAWK
"Hard to tell if the values are to high (creating oscillation) or to low (inadequate reaction from the controller).
When I was getting off the ground I adjusted stabilized roll and pitch no more than 1.0 for each attempt.  Try upping the values to 8…"
Mar 2, 2017
Harry Courter replied to Peter Arnold's discussion Pixhawk Hex Take Off Stability problems in PIXHAWK
"I have a heavy Y6, 7.5KG.  I had major problems taking off for my first flight.  The tendency to flip or do some other unwanted action was potentially very dangerous.  I needed to raise stabilize P just to get off the ground.  Once I completed Autot…"
Mar 2, 2017
Harry Courter replied to Peter Arnold's discussion Pixhawk Hex Take Off Stability problems in PIXHAWK
"Have you managed to complete Autotune?  This is a common problem with the first flight.

If you are unable to achieve stable flight in Althold, required for Autotune, then try increasing the "stabilize P"  value by a small bit, or better configure t…"
Mar 2, 2017
Harry Courter replied to Evan Palmer's discussion Turnigy Trust 70A Issues in PIXHAWK
"Even, I just came upon a video in the wiki that may help address your issue.  In the wiki, search for " ESC sync issues"  If this is actually your issue, this will confirm it."
Feb 26, 2017
Harry Courter replied to Evan Palmer's discussion Turnigy Trust 70A Issues in PIXHAWK
"A few items.  from your diagram it looks like you have two batteries, not in parallel, but independently supplying power to two motor / ESC 's each.  This could be causing trouble as the batteries are not equal.  I have a parallel battery arrangemen…"
Feb 23, 2017
Harry Courter replied to Rado Ino's discussion Voltage of battery going up and down all the time
"Well a bad power module is better than voltage lag creating your problem.
Have you measured your current during a flight from an independent source?
Why are you using 70A esc's when you hover at 10A?"
Feb 23, 2017
Harry Courter replied to Rado Ino's discussion Voltage of battery going up and down all the time
"This is normal.
The minimum voltage is under load.  As you raise your throttle the current or Amperage increases, this causes the voltage to lag, or go lower.  How much lower?  That's individual.  I'm accustomed to seeing .5v to 1.5v lower when draw…"
Feb 22, 2017
Harry Courter replied to Evan Palmer's discussion Turnigy Trust 70A Issues in PIXHAWK
"Martin, the "jump start" seems to work for most, however, I have found that with a heavy lift beast anything fast during the maiden flight is terrifying.  some manual tuning is needed prior to being airborne.
Evan, has 70A esc's so I figure he has a…"
Feb 22, 2017
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