"Yep, haven't hand launched it now for some time... rail on catapult is 3 meters. acceleration trigger for auto start is 5ms and 0.5 sec delay which means I am getting full throttle just as it comes of the launcher. Catapult rail is inclined up…"
"Hi Trent. I like your enthusiasm ! A couple of questions: 1- Are you using autotake off ? 2- What was wind conditions ? I am not comfortable with my X8 wing and your Raptor 140 is getting my attention, when will be in stock again? "
"Yes, that is what we use, THR_SUPP_MAN = 0. This requires a little history to explain. At first, APM autotakeoff did not suppress the throttle and the prop would spin as soon as you went to AUTO mode. This is considered by many to…"
Very interesting results. I had same experience in the past (never understood why), so decided to go to
THR_MAX = 100%
TKOFF_THR_MINSPD = 0 TKOFF_THR_MINACC = 10 TKOFF_THR_DELAY = 1
Minimum pitch ( for auto-takeoff ) =…"
I guess I was not clear enough. AutoTakeoff worked as expected only when the RC transmitter throttle was advanced. The APM detected acceleration, unsuppressed the channel and set the channel output to the configured maximum, which…"
We made several tests this morning with our EZ Star "testbed" plane. This uses the same (APM 2.75) firmware but does not have the size risk of the X-8.
Prior to starting, I ensured that we were using the same parameters you…"
"I am getting from 3DR PM very acceptable voltage readings but current reading is complete wrong. There is in average 20% of error in the reported vs real drained current from the batteries. Knowing that, I decided to set in PM my battery…"
Yes, your understanding is correct !. I like to have motor spinning on the catapult before launching just to 1) be sure that motor is running and 2) reduce the transition to full power spinning.
Today I did some static tests at home…"