Brian Wolfe's Blog (13)

T3 Entry

My entry for the T3 contest, ending this weekend.



Added by Brian Wolfe on January 29, 2011 at 9:00pm — 1 Comment

T3-8 entry, right under the wire


Added by Brian Wolfe on September 7, 2010 at 1:30am — No Comments

AXN Floater Buildup

I'm slowly getting some web pages put up to document the PICPilot development. Since I had just built up another AXN Floater Easy Star clone I thought I would start with that for those considering it as a possible UAV platform. Take a look here if your interested:

I'll be adding more content as time allows.


Added by Brian Wolfe on February 12, 2010 at 1:30am — 2 Comments

Two words...

u-Blox rocks.
More to follow....

wait, that's five words.... I mean nine words...that is to say thirteen words.......oh poo

Added by Brian Wolfe on October 15, 2009 at 9:47am — 4 Comments

Built up Three more PicPilots

Well my back ordered parts finally came in so I built up my last three PicPilot boards. I plan on keeping one of them so I'll have two to play around with. One is in my Tri Rotor and the other will be installed in the Easy Star clone I just received. Of the remaining two, I have one potentially sold leaving one up for grabs. If your interested the cost is… Continue

Added by Brian Wolfe on July 27, 2009 at 1:10am — 30 Comments

Easy Star Clone

AXN Floater

Not sure if any of you have seen this, but there's a decent looking easy star clone for what appears to be a pretty good price. Here is a review.

The shipping will be a little steep at about $35-$40, but considering it comes… Continue

Added by Brian Wolfe on June 23, 2009 at 2:11pm — 9 Comments

PicPilot/Y UFO musings

Well I completely removed the stock Y-UFO electronics (except for speed controllers of course) and am now doing all the mixing and stabilization with the PicPilot. Here is a pic of the install.

It's been too windy to fly outdoors so I've been doing what testing I can inside. I have a little instability at the moment. The Y-UFO will begin to oscillate in sort of a circular motion reminiscent of a coin being dropped on a table.… Continue

Added by Brian Wolfe on June 20, 2009 at 5:18pm — 9 Comments

PicPilot Flies a Tri-Rotor.....

Well at least for a couple minutes and six inches off the ground. Read on!

First a little about the platform. I decided to start out on my Y-UFO since it was built up and ready to go. This is a fun little Tri-Rotor that has about a 10 -12… Continue

Added by Brian Wolfe on June 13, 2009 at 12:00pm — 11 Comments

PicPilot + Ardupilot Ground Station

I got the Radio Interface running today and am talking thru the XBee radio to the Ardupilot ground station. I'm not sending all the data yet, but most of it. That's my house down there!

That just leaves the SD card as the last bit of hardware to validate. I'll probably wait a bit on that and focus on getting the magnetometer integrated with the attitude estimator. Then I think… Continue

Added by Brian Wolfe on May 25, 2009 at 10:21pm — 4 Comments

Pic32 Autopilot Progress.

Got the Altitude sensor working (BMP085). This graph shows the responds from holding the autopilot near the roof then lowering it to the floor, then back again. All in all about 8 ft. A little noisy, but not too bad. I haven't attempted any filtering of the data yet.

This graph shows the accelerometer data as I hand held it and did several rotations about the roll and pitch… Continue

Added by Brian Wolfe on May 25, 2009 at 12:00am — 18 Comments

Pic32 Autopilot Prototype Built!

UPDATE!! Got the Servo Outputs running today. They offer 15 bits of precision and are synchronized to the guidance/control functions to minimize latency in the control loop. Also got the Magnetometer running and am talking to the GPS receiver

UPDATE #2: May 24 2009: Just got Current Voltage and Temperature Monitoring done. Also have the Attitude Estimation Running. Check it out.… Continue

Added by Brian Wolfe on May 17, 2009 at 11:30am — 22 Comments

Pic32 Autopilot Layout Done.

I should have boards in about a week and a half. I'll order up parts tomorrow.

Here's a pic of the top side and the parts list.

UPDATE: I added a link to the updated schematic. The main changes to the original are adding an altimeter and airspeed sensor and switching from the Freescale MMA7260 Tri axis accelerometer to the Bosch BMA145. The Bosch is lower cost while having better noise and accuracy specs.



Added by Brian Wolfe on May 5, 2009 at 9:13pm — 5 Comments

Yet Another Autopilot

It seems everyone and their mother has an autopilot board they're working on so I thought I would join the bandwagon. I've actually been wanting to develop one for quite some time, but after seeing Bill and Paul's progress on their DCM estimation work I got inspired to get started now.

There are several good autopilot boards available for experimentation, but none that had the feature set I was looking for. I… Continue

Added by Brian Wolfe on April 26, 2009 at 2:47pm — 19 Comments

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