Mark Harrison's Discussions (25)
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Odd rise/descend behavior in loiter, alt hold modes
The first time I fly, position holding is perfect in all axes.
Subsequently (after I put it to another mode and return it to loiter [?]), the altitude does not hold. When the stick is centered, it either slowly rises (if it was climbing previously) o
Read more…Preparing some feedback on the Texas Drone Proposal, feedback solicited!
I've started an analysis and write-up of the legislation here:
http://eastbay-rc.blogspot.com/2013/02/notes-on-proposed-drone-legislation.html
My goal is to present a clear set of hobbyist use cases and suggested amendments to protect hobbyist and "lig
Read more…APM2: Rx bus not working?
I'm moving my APM2 from fixed wing to quad. Downloaded and configured new firmware, everything seems good. Planner can connect, artificial horizon works, etc.
Plugged in Rx, and had this problem:
- no power to the Rx, the Rx power light is off
Moved +
Read more…"make upload" avrdude error
I'm getting the following error from "make upload".
mh@maru ~/apm/ArduPlane-2.34/ArduPlane --> make upload
/Applications/Arduino.app/Contents/Resources/Java/hardware/tools/avr/bin/avrdude -c stk500v2 -p atmega2560 -P /dev/ttyUSB0 -b115200 -U flash:w:/v
Howto: compiling on mac
I've put my notes here... let me know if they're useful at all!
http://eastbay-rc.blogspot.com/2012/05/building-ardupilot-mega-on-mac.html
Read more…Alternate sources for attopilot voltage/current sensor?
Are there any alternate sources for this item?
3DR, do you plan to carry this item or equivalent?
AttoPilot Voltage and Current Sense Breakout - 90A
http://www.sparkfun.com/products/9028
Read more…attopilot current sense + XT60 connectors?
Is it feasible to directly attach XT60's to this unit, similar to how they attach Deans connectors?
If so, how does the curved surface of the XT60 mate?
AttoPilot Voltage and Current Sense Breakout - 90A
http://www.sparkfun.com/products/9028
Read more…alternate antennas for air units?
One thing that I liked about the xbee air unit was its tiny wire antenna.
Are there other options for the air unit besides the right angle antenna?
Read more…Maximum wiring distance between air unit and APM2?
If I wanted to move the radio away from the APM2 (mounted onto a wing, for example), are there any limitations on the wiring distance between the radio and APM2?
Read more…allow more comments/page on blog entries?
The "Welcome to APM 2.0" blog post has a ton of comments.
Is there a way for the system to show more comments per page?
And while we're at it , a forum topic for the forum! :-)
Read more…Single wire connections between receiver and APM?
For the roll, pitch, and yaw connections can I use a single-wire connection? i.e. just the signal wire and not ground and power?
I'm a bit squeezed for space and would like to reduce the size of the wire bundle between the two units.
Read more…xbee causing odd servo jitter in apm?
Here's an odd thing that happens in my office. I haven't noticed it happening in the field.
- when powered up, the servos constantly jitter
- jittering seems to be going through the APM... note the period of time when APM is booting and jittering stops
- jit
Reducing memory footprint for atmega1280?
APM 2.24 seems a bit big for atmega1280.
When compiling for arduino mega 2560, It gives this memory report:
Binary sketch size: 131036 bytes (of a 258048 byte maximum)
Any pointers to reducing the code size so it will compile for atmega1280?
Read more…xtremebee usb thinks it's a mouse?
Had a very odd thing happen...
- windows 7
- plugged in xtremebee usb.
- kept getting behavior as if the right mouse button was being pressed
- apm could not connect over xbee link
I opened the "Devices and Printers" window on the control panel, and it
Read more…KML export adds spurious points?
version: APM Mission Planner 1.0.69
KML export seems to add some spurious locations pointing to an incorrect location.
If you look at the attached google earth screenshot, you can see there appears to be some spurious points in the data path. The poin
some mission planner n00b questions
Very happy, got the APM up in the air first time flying missions and downlinking telemetry.
Michael Oborne, splendid job on the ground station!
So, now some noob questions:
- what are the red, black, orange and green straight lines?
- Under where it
Read more…How much time do I have to stabilize the gyros?
I've installed APM into a hawksky. The APM is in the hatch above the battery. My power up procedure is:
1. remove the APM board
2. attach power to the battery
3. attach the APM board, making sure it and the plane are level
How much time do I have bet
Read more…