"Bruce Schneier on encrypted video streams: http://www.schneier.com/blog/archives/2009/12/intercepting_pr.html
If a takeover were attempted, I wouldn't bet on the attacker gaining full control. The receiver probably just goes into failsafe like…"
Gerard Toonstra's Discussions
additional SPI devices with ArduPilot Mega
Started this discussion. Last reply by Darren May 22, 2011. 5 Replies 0 Likes
Hello,I have a MAX7456 chip, which is a relatively simple OSD chip. It's fitted on a breakout board and you talk to it through an SPI.I tried to find out a way to easily connect the chip on the…Continue
EEPROM use and airstart
Started this discussion. Last reply by Doug Weibel Aug 31, 2010. 1 Reply 0 Likes
Hi there,I'm reviewing the code whilst finishing off on the last details on the APM (voltage monitor, xbee connection, etc.) . I noticed that the APM makes rather heavy use of the eeprom also in…Continue
Ardupilot Mega installation into easystar.
Started this discussion. Last reply by Ravi May 23, 2011. 29 Replies 0 Likes
Today I built in the Ardupilot Mega for the first time into a plane to verify the functioning of Stabilize and FBW_A modes. I just wanted to get some debug output and see the servo's functioning.…Continue
Tags: reset, first, installation, continuous, startup
FlightGear flying with Ardupilot Mega
Started this discussion. Last reply by Gerard Toonstra Aug 22, 2010. 2 Replies 0 Likes
Just a small note that I was able to use the Ardupilot Mega in an experimental setup with FlightGear. I ported the XPlane 0.43 software to Linux C (using autotools). The trouble was finding out that…Continue
Tags: xplane, flightgear
Gerard Toonstra's Page
Latest Activity
Gerard Toonstra commented on Simon's blog post 12 Rotor from SmartDrones"+1 on reminder about policy.
On a less serious note... Teargas is completely unnecessary here. the sight of this flying shopping cart is enough to make anyone cry.
I wouldn't get too excited about this particular "innovation".…"
Gerard Toonstra commented on Trent at MyGeekShow's blog post Flying Wing Testing - No Stabilizers and Expos"These winglets force the tip vortex entirely to the outside, allowing the entire wing span to produce lift. This therefore increases your aspect ratio a bit and this lowers stall speed a bit. Doubt that this impact is noticeable on model aircraft…"
Gerard Toonstra commented on Simon's blog post 12 Rotor from SmartDrones"This introduces 12 points of failure. The shopping cart wheels look terrible under it."
Rigel commented on Gerard Toonstra's blog post RTH and "stabilized mode" with the arduimuv3"Cool, thanks!"
Gerard Toonstra commented on Gerard Toonstra's blog post RTH and "stabilized mode" with the arduimuv3"e voila: http://code.google.com/p/arduino-ppm-servo/"
DeveloperJohn Arne Birkeland commented on Gerard Toonstra's blog post RTH and "stabilized mode" with the arduimuv3
"Why should I mind? As long as it's your work and/or based on already open sourced code."
Gerard Toonstra commented on Gerard Toonstra's blog post RTH and "stabilized mode" with the arduimuv3"Thanks! I may well try that out. Indeed, the performance should be around that figure. Not sure if you could achieve 0.5us using something similar to:
------------------------------------
TCCR1A =…"
DeveloperJohn Arne Birkeland commented on Gerard Toonstra's blog post RTH and "stabilized mode" with the arduimuv3
"I ended up the other way, using 8 bit timer for PPM input using the overflow interrupt to make a 16bit timer. Just add CNT (255) to a uint16 every overflow. And when a PPM pulse triggers the external interrupt, add the current CNT with the uint16 to…"
Gerard Toonstra commented on Gerard Toonstra's blog post RTH and "stabilized mode" with the arduimuv3"John, this board has two timers available. One is easily used for ppm sum analysis, but that consumes the 16-bit timer. Did you use an 8-bit timer to drive the servo's or the same timer for driving the servo's as well? I did try to…"
DeveloperJohn Arne Birkeland commented on Gerard Toonstra's blog post RTH and "stabilized mode" with the arduimuv3
"Great stuff.. The older ArduIMU V1&2 was my favorite boards for a long time and would support 8 channel PPM input and solid 6ch servo output with a bit of trickery (more channels possible but pulse timing would suffer).
I used it as a 3 axis…"
Gerard Toonstra commented on Gerard Toonstra's blog post RTH and "stabilized mode" with the arduimuv3"Rana, it's not necessarily enough to increase output power, as many of these devices assume up to a certain distance away from the base station. So they hardcode the timeout between acknowledgements that the device expects. If that's too…"
Rigel commented on Gerard Toonstra's blog post RTH and "stabilized mode" with the arduimuv3"@Gerard and Rana: Interested in both your setups. Could you please provide more info on the camera models and setup? Thanks"
ModeratorMonroe commented on Gerard Toonstra's blog post RTH and "stabilized mode" with the arduimuv3
"I agree it's very interesting. Do you expect to get any data in the near term? I'm loaded down with projects myself."
Runar commented on Gerard Toonstra's blog post RTH and "stabilized mode" with the arduimuv3"This looks really interesting, I will probably contact you for details in the next few weeks some time. It's just to much other projects going right now.
Runar"
Gerard Toonstra commented on Gerard Toonstra's blog post RTH and "stabilized mode" with the arduimuv3"I haven't gone further than 500m so far and still need to verify the range in the field and the impact of reflections and interference from other wifi stations. I've looked at DVB-S before this, but couldn't find an affordable module…"
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Gerard Toonstra's Blog
RTH and "stabilized mode" with the arduimuv3
Posted on May 15, 2012 at 9:00am 15 Comments 4 Likes
This is a schematic of my wiring of the ArduIMU v3. I hope to be able to use this soon as my own personal and custom RTH and 'stabilized mode' solution with some extra benefits highlighted below. One extra analog pin will be used in the future to read out the RSSI level from the attached RC receiver.
This setup demonstrates how far you can push this remarkable board. The W5100 chip provides 30Hz telemetry over wifi to the ground (just make sure to use the sparkfun…
Continue Custom autopilot for the ArduImu V3
Posted on March 30, 2012 at 7:00am 1 Comment 4 Likes
The ArduIMU v3 is a very interesting little device for minimalists. For my own project, I needed a device that could keep the plane level, maintain heading/altitude and sometimes steer to a particular waypoint. The majority of the time, I intend to control the plane myself, but I need the autopilot to take over at certain times to allow me to perform some other minor…
Continue Arducopter code mods
Posted on June 26, 2011 at 6:00am 4 Comments 5 Likes
I built my own quad from scratch using an alu frame and decided to control it using the ardupilot mega that I have lying around. I loaded the arducopter NG2 code on this and took it for a couple of flights, noting its behavior and how it felt like controlling it. My intentions are to make this a platform that is really easy to control from first person video too, as…
Continue Another quad in the sky
Posted on April 25, 2011 at 3:50pm 8 Comments 2 Likes
I've been working on this quad for about three weeks. I based some of the frame design on the arducopter. The flight was done with the ardupilot mega+gps+compass in stable mode. The start was a bit disappointing at first, but it was soon resolved and possibly caused by a faulty RSSI indicator. As can be expected, it's way more stable than the tricopter. The only required nudges are throttle and where the quad is going. Soon, I'll test GPS Hold mode and a mode for navigation that I put in…
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