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Sunnyvale, CA


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Activity Feed

Ari Krupnik replied to Ari Krupnik's discussion First-time setup: FBWA pitch extremes
"It appears that I had the elevator direction reversed."
Aug 3
Ari Krupnik replied to Ari Krupnik's discussion First-time setup: FBWA pitch extremes
"It appears that I had elevator servo output reversed. I corrected this, and now the plane flies beautifully in manual and auto modes."
Jul 27
Ari Krupnik posted a discussion
I played with APM way back when, but none of that experience seems relevant now. I'm a first time builder for practical purposes.My setup should be pretty straightforward:Bixler 2Holybro Pix Hawk MiniArduPilotMission PlannerFrSky Taranis / XM+The…
Jul 27
Ari Krupnik replied to Ari Krupnik's discussion RC_CHANNELS_OVERRIDE and flying with joystick
"ComponentID=190 seems to match MAV_COMP_ID_MISSIONPLANNER member of the MAV_COMPONENT enumeration in XML.
Ari."
Feb 10, 2013
Ari Krupnik replied to Ari Krupnik's discussion RC_CHANNELS_OVERRIDE and flying with joystick
"My parsing code was inconsistent with MAVLink encoding. I was reading fields in the order that they appear in the XML, while in reality, MAVLink reorders them based on field width. So I was parsing the high and low bytes of chan1_raw into the target…"
Feb 9, 2013
Ari Krupnik posted a discussion
I'm trying to control an APM using Mavlink and a joystick.I understand that the Mavlink message I need to send for this is RC_CHANNELS_OVERRIDE. Some of the fields in this message are obscure to me.I notice that Mission Planner sets SystemID=255 and…
Feb 4, 2013
Ari Krupnik replied to Ari Krupnik's discussion MAVLINK endianness confusion
"I'm running the git version of Ardupilot; I'm writing my own ground station RX. I'm traveling now and so am away from my hardware. I can post the raw binary when I return next week.

Ari."
Jan 30, 2013
Ari Krupnik posted a discussion
I'm parsing MAVLINK 1.0 for my ground station.From MAVLINK documentation, I understand that the protocol uses little-endian encoding on the wire. This assumption produces meaningful data for a lot of packets. However some packets make no sense in LE…
Jan 27, 2013
Ari Krupnik replied to Ari Krupnik's discussion Minimal Ground Station software--MAVLINK 1.0
"So now I'm reading MALINK from APM, and I'm parsing out the telemetry, and the CRCs I calculate match what's coming though the serial (wow the extra CRC nonsense). Thank you for your pointers guys!

Now I want to drive my UAV from the ground…"
Jan 27, 2013
Ari Krupnik posted a discussion
I'm putting this here since I'm unclear where this question would belong.I want to build a ground station around a Raspberry Pi that can display basic telemetry.Initially at least, I want to read only a minimal set of attributes, essentially what…
Jan 21, 2013
Ari Krupnik replied to Heino R. Pull's discussion Ardustation 2.0.16 Release - Updates for ACM 2.7.3 and APM 2.6.0 with Variable Speed Servo Slewing
"I'm trying to compile 2.0.16 with Arduino 1.0.3 and I must be missing something really basic. I get many compilation errors. Perhaps you can point me in the right direction to resolve these.

Ari.
ArduStation2:136: error: variable or field…"
Jan 21, 2013
Ari Krupnik commented on Chris Anderson's blog post iPhone transforms into a drone ;-)
"Chris, and to think that you and came this close to shipping this product way back in 2010...  :=)
Ari."
Nov 8, 2012
Ari Krupnik posted a discussion
I'm trying to program my APM to fly to waypoint A, fly to waypoint B, return to A, return to B, etc., indefinitely. The simple approaches I've tried with a single jump command don't work: the plane ignores my jump instruction and returns home after…
Aug 2, 2012
Ari Krupnik posted a discussion
I'm looking at the Servo Switch in the DIY Drones store (https://store.diydrones.com/ServoSwitch_V10_p/br-0007-01.htm ) and I notice that "firmware" ZIP contains only one C file, Fail_Safe.c. The source seems to mention MUXs and controlling Megas…
Jun 15, 2012
Ari Krupnik commented on Ari Krupnik's blog post Rocket-power SkyFun
"The motor stays put. I have another, smaller rocket glider that does eject the motor, but there I mount the motor in the nose. Generally, you want a very forward CG on the boost, and move it back for glide. If you mount the motor in front, you can…"
Apr 10, 2012
Ari Krupnik commented on Ari Krupnik's blog post Rocket-power SkyFun
"The motor stays put. Here are some closeups of the motor mount. The original electric motor mount and the new rocket tube are interchangeable. I can swap them in and out in the field."
Apr 10, 2012
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