Antonio Alfaro
  • Male
  • Alajuela
  • Costa Rica
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  • X8

    X8

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Latest Activity

zheng jishi replied to Antonio Alfaro's discussion X8 take-off using catapult in the group X8
"Hi,Steve,      Can you upload your configuration file or tlog file?Thanks."
May 4, 2014
Steve Keep replied to Antonio Alfaro's discussion X8 take-off using catapult in the group X8
"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…"
Dec 20, 2013
Antonio Alfaro commented on Trent at MyGeekShow's blog post MyGeekShow's Bungee Launching Drone
"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?  "
Dec 15, 2013
Antonio Alfaro replied to Antonio Alfaro's discussion Pitch setting. Help ! in the group ArduPlane User Group
"Hi Hans, My X8 HK wing http://www.hobbyking.com/hobbyking/store/__27132__Skywalker_X_8_FPV_UAV_Flying_Wing_2120mm.html Setup: Motor: NTM4238, 750 Kv , 780 W max. ESBC: Turnigy 80 Amp Folding propeller: 14x7 Battery : 4S 5000mAh Regards Antonio"
Nov 21, 2013
Hans Miller replied to Antonio Alfaro's discussion Pitch setting. Help ! in the group ArduPlane User Group
"Hi Antonio, A bit more information about your aircraft would be helpful please. Thanks, Hans"
Nov 20, 2013
Antonio Alfaro added a discussion to the group ArduPlane User Group
Thumbnail

Pitch setting. Help !

Hi Folks,I am really having troubles to get my X8 wing's pitch tuned. Attached are tlog file and a pitch graph picture. I will appreciate your suggestions to solve it.See More
Nov 20, 2013
Antonio Alfaro replied to Marek's discussion Yet another alternative for ...
"Hi Marek, What is the development status of your modules? Is Phase 1 already tested and commercially delivered ?"
Nov 8, 2013
Andy Demartini replied to Antonio Alfaro's discussion X8 take-off using catapult in the group ArduPlane User Group
"OK, here's the file."
Nov 8, 2013
Andy Demartini replied to Antonio Alfaro's discussion X8 take-off using catapult in the group ArduPlane User Group
"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…"
Nov 7, 2013
Antonio Alfaro replied to Antonio Alfaro's discussion X8 take-off using catapult in the group ArduPlane User Group
"Andy, Very interesting results. I had same experience in the past (never understood  why), so decided to go to THR_MAX = 100% THR_SUPP_MAN =1 TKOFF_THR_MINSPD = 0 TKOFF_THR_MINACC = 10 TKOFF_THR_DELAY = 1 Minimum pitch ( for auto-takeoff ) =…"
Nov 7, 2013
Andy Demartini replied to Antonio Alfaro's discussion X8 take-off using catapult in the group ArduPlane User Group
"Paul, 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…"
Nov 7, 2013
Andy Demartini replied to Antonio Alfaro's discussion X8 take-off using catapult in the group ArduPlane User Group
"Antonio, 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…"
Nov 7, 2013
Antonio Alfaro replied to Mihai's discussion Battery voltage and current measurement - unusable?
"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…"
Nov 7, 2013
james sowell replied to Antonio Alfaro's discussion X8 take-off using catapult in the group X8
Nov 6, 2013
Antonio Alfaro replied to Antonio Alfaro's discussion X8 take-off using catapult in the group ArduPlane User Group
"Hi Andy, 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…"
Nov 6, 2013

Profile Information

About Me:
retired electronic engineer
Please tell us a bit about your UAV interest
FPV with X8 wing for relaxing
Hometown:
Alajuela

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