David Pulvermacher
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  • Western Cape
  • South Africa
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David Pulvermacher's Discussions

Landing gear activation

Started this discussion. Last reply by Stephen Zidek Jun 23, 2016. 1 Reply

Does anybody know whether it's possible to activate retractable landing gear using the barometer/GPS with Pixhawk?I'd like to have my gear automatically switched into the down postion at say 5 metres…Continue

Esc calibration with CPPM and APM 2.6

Started Feb 14, 2016 0 Replies

I've had to go back to my APM 2.6 as my Pixhawk is faulty.I tried doing an all in one ESC calibration bit the APM will no go into calibration mode.Could this be due to the Rx/ APM being in CPPM mode?Continue

RSSI config on APM 2.6 and MinimOSD

Started May 15, 2015 0 Replies

I have set up my RSSI output pin to 1 in Mission Planner and set the Minim to raw RSSI signal.There is a reading but it isn't constant. It 'scrolls' from a maximum of about 135 through to a minimum…Continue

MinimOSD battery voltage error

Started this discussion. Last reply by Stuart Brookes Mar 15, 2015. 3 Replies

Is there a parameter setting in APM 3.2 that alters how the battery voltage is displayed in telemetry?Mine's out by at least a volt. Perhaps some sort of calibration necessary? I'm using APM 2.6 and…Continue

 

David Pulvermacher's Page

Latest Activity

Michael Parrett left a comment for David Pulvermacher
"Thank's Dave for the URL. I am haveing multiple problems with this build so I am going to start all over and see if my problems go away. Thank's again for your input."
Jun 22
Michael Parrett left a comment for David Pulvermacher
"Thanks Dave for all of your input. I have tried raising the quad in the air to let it think it was flying and that didn't help. I moved it 30 feet away and that did not help. I am afraid to try and fly this until I can get this…"
Jun 16
David Pulvermacher left a comment for Michael Parrett
Jun 16
David Pulvermacher left a comment for Michael Parrett
"Michael, I seem to remember that there is a section in the ardupilot wiki that describes how to test your failsafe in a few different ways. I'll see if I can find it over the week end. However I think your FC is behaving as it should. Best DP"
Jun 16
David Pulvermacher left a comment for Michael Parrett
"You need to raise the lower end point of your throttle so that the failsafe value is at least 10 below your minimum throttle position. ie as your pwm value is 999 when the TX is switched off, your failsafe value should be 1100, so your low throttle…"
Jun 15
David Pulvermacher replied to Hugh's discussion APM 2.8 and GPS / Compass
"Found this: If you have a 2.8 with external compass do not use the 12c, plug it into the plug under the GPS plug and you have to remove the jumper to the right of the GPS. See:…"
Jun 5
David Pulvermacher left a comment for alexandre bhar
""got my mistake... the tlemetry mode at my T X was set to D-cable... has to be Frsky sbus...." Hi Alexandre......Where is that setting? On the telemetry screen or on the radio setup page? Thanks DP"
Oct 9, 2016
David Pulvermacher commented on Jared Reabow's blog post How to Get APM/Pixhawk telemetry on your taranis!
"Hi All... I've just wired up a Teensy LC (having flashed it using arduino as above) to Rx line on my Minim which is working perfectly, and the Smart port on the X8R.The teensy flashes slowly during boot, but then flashes rapidly thereafter,…"
Jul 13, 2016

MR60
Forrest Frantz replied to David Pulvermacher's discussion Coax 8X quad in the group ArduCopter User Group
"Correct, but actually because one rotor is upside down and spinning the opposite ship-wise direction, both are actually spinning the same direction relative to the motor."
Jun 27, 2016

MR60
Forrest Frantz replied to David Pulvermacher's discussion Coax 8X quad in the group ArduCopter User Group
"Impossible (see following note). But, can you split a control wire to control two ESCs (each controls it's own motor) so the Pixhawk could control 16 rotors (eight sets of 2 pairs) or 8 rotors (4 sets of pairs) only using a quad setup? Note:…"
Jun 27, 2016
OwlPic replied to David Pulvermacher's discussion Coax 8X quad in the group ArduCopter User Group
"Craigs, comments don't match our and many others documented experience. But agree that just slapping together components will yield different results. The devil is in the details. Google to get other experences."
Jun 27, 2016
Craig replied to David Pulvermacher's discussion Coax 8X quad in the group ArduCopter User Group
"besides sync issues and twice the chance of burning out an esc running two motors in opposite directions and not gaining any real benefit of lift because of diminishing returns and eating up your lipos twice as fast I'd say no. That and LOTS of…"
Jun 27, 2016
David Pulvermacher added a discussion to the group ArduCopter User Group
Thumbnail

Coax 8X quad

Is there any reason why one cannot add four pushers to a quad using just four escs to control all the motors?I know that there would be no redundancy with that configuration, but there is an advantage related to lifting capacity...Anybody any experience with this?Best DP.See More
Jun 27, 2016

T3
Stephen Zidek replied to David Pulvermacher's discussion Landing gear activation
"No built in functionality for altitude based deployment right now.  If you check the wiki page there are some options for mode based deployment.  I assume you are working with 'copter, anyway. It is also possible to DIY it, if…"
Jun 23, 2016
David Pulvermacher posted a discussion

Landing gear activation

Does anybody know whether it's possible to activate retractable landing gear using the barometer/GPS with Pixhawk?I'd like to have my gear automatically switched into the down postion at say 5 metres above the ground when landing....Thanks. DPSee More
Jun 23, 2016
David Pulvermacher replied to Marco C's discussion CAN NOT INVOKE AUTOTUNE FLIGHT MODE in the group ArduCopter User Group
"Why dont you just allocate a switch on your Tx to channel 7, and set that channel in MP to Autotune? You just need to set your end points to that channel so the when the switch is activated, the PWM is over 1700... Then fly your craft in Althold and…"
Jun 12, 2016

Profile Information

Please tell us a bit about your UAV interest
550 Quad with APM 2.6, Fatshark Predator FPV, 600Mw Tx, Go Pro 3+ on Tarot 2D gimble. TG9X Tx with Open9X, DJT module and FrSky D8R II plus Rx flashed for CPPM, MinimOSD, 3DR radio telemetry with Bluetooth bridge at ground station.
Hometown:
Cape Town

Comment Wall (2 comments)

At 8:54am on June 16, 2017, Michael Parrett said…

Thanks Dave for all of your input. I have tried raising the quad in the air to let it think it was flying and that didn't help. I moved it 30 feet away and that did not help. I am afraid to try and fly this until I can get this resolved. I have seen some videos how to test this function but it doesn't work with my set up. Like I said it shows going into failsafe but it just disarms and never shows RTL is activated. Thanks again Dave for all of your help. 

At 12:25pm on June 22, 2017, Michael Parrett said…

Thank's Dave for the URL. I am haveing multiple problems with this build so I am going to start all over and see if my problems go away. Thank's again for your input.

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