March 2010 Blog Posts (118)

Ardupilot as OSD WITHOUT additional hardware (NO LM1881)

BaroneOSD is a PAL video overlay impression WITHOUT additional hardware required (NO LM1881 Sync generator).

Use only 3 pin:

D1 (USART TX) used to pump pixel in the video connected with a 330Ohm resistor to D6

D6 (AIN0) Video in/out, connect here you camera or radio TX.

D7 (AIN1) 0.3V Voltage reference (you can use a partitor resistor)…


Added by Francesco Ferrara on March 15, 2010 at 2:30am — 26 Comments

What's your screen resolution? - help GCS desing

In order to properly size displays for the ArduPilot GCS it would help to know what screen resolution everyone uses - in the field on their GCS computer… Continue

Added by automatik on March 15, 2010 at 1:00am — 36 Comments

3D Robotics
March 14 flight report: testing ArduPilot 2.5 RC 2 code

Jason Short and I had great day of testing and improving code (and putting in a pretty good T3 contest time!). Once again we were at the RC club in Point Richmond, across the Bay from San Francisco. Jason was just back from a skiing vacation where he tangled with another snowboard to the tune of 17 stitches on his ankle (I saw them: ouch) but fortunately UAV development doesn't require a lot of running.…


Added by Chris Anderson on March 14, 2010 at 10:00pm — 19 Comments

No podcast this week

We'll have on next week!

Added by Tim Trueman on March 14, 2010 at 8:48pm — 1 Comment

Look of the new Ardupilot GCS

Hi all,
please critique new look of the upcoming Ardupilot GCS. Functionality will be discussed elsewhere, so for now please provide constructive criticism for the "look and feel".


Added by automatik on March 14, 2010 at 6:41pm — 21 Comments

Variable Pitch Quad Rotor - M/UAV

Variable Pitch Quad Rotor - M/UAV

DIY project ranging from a 600cc 120HP etec Ski-Doo engine, UltraSport 254 tail rotors, extruded aluminum blades from Vortech, aluminum / steel…


Added by fibrewire on March 14, 2010 at 12:30pm — 54 Comments

3D Robotics
Tutorial: Programming your uBlox GPS module

Although you can buy the uBlox modules pre-programmed from the DIY Drones store, you may want to do it yourself, either because you want to update the firmware or change some settings, or because you've bought the module… Continue

Added by Chris Anderson on March 14, 2010 at 12:00pm — 67 Comments

3D Robotics
"Silent deadly threat"(??) crashed, captured

From a Der Spiegel UAV photo gallery. Note the over-the-top caption. What is this toy plane? It looks like a Hobbyzone Phantom!

Added by Chris Anderson on March 13, 2010 at 7:29pm — 12 Comments

3D Robotics
Latest research on optical flow

I've been fascinated by optical flow ever since I learned that you can do some pretty good navigation work with the chip taken from an old optical mouse. I think this is probably going to be one of the methods we use to take Blimpduino navigation to the next level (it's ideal for any unknown…


Added by Chris Anderson on March 13, 2010 at 10:00am — 14 Comments

3D Robotics
Last weekend for your T3 entries!

Entries for the current T3 contest (virtual Sparkfun competition) are due by midnight PST on Sunday, so this is your last weekend to get a flight in. The current leading time is 25.7…


Added by Chris Anderson on March 13, 2010 at 9:03am — 4 Comments

The BIG Skywalker FPV UAV platform

Skywalker is now in a new version made of EPO foam. Much stronger foam.

Length: 1180mm

Wingspan: 1680mm

Wing Area¡G35.5dm2

Wing Loading¡G36.6


4 x 9g Servo

3S1P 11.1V 2200mAH-5000mAH

Motor: 2215-1200KV or 2815-900KV

Propeller: APC-9045E 9060E

I think this platform could be the replacement for the smaller Easystar if it's possible. What do you…


Added by Robert Krogh (hooks) on March 13, 2010 at 7:30am — 29 Comments

3D Robotics
RC helicopters collecting whale snot

We're always looking for practical applications of what we do. Here's one from f…


Added by Chris Anderson on March 12, 2010 at 12:00pm — 7 Comments


Marcy 1's flight time is horrible with POV. It's declined from 10 to 6 minutes.

She's got radio lockups with the chip radios. That's coming down to a hardware state which can't be corrected by resetting the hardware. Connecting reset to Vdd reduces the lockups but adds a huge amount of noise to the thermopile readout. The logic pins on the MRF49XA put a huge amount of noise into your power supply.

The thermopile is down to power line noise. This isn't a problem when they're… Continue

Added by Jack Crossfire on March 12, 2010 at 11:30am — 3 Comments

Buy US Army Camera Plane

Or their other one

Interesting site…


Added by Gary Mortimer on March 12, 2010 at 10:40am — 38 Comments

Recent drone documentary on Swiss TV

Hi all,

Maybe of interest for some of you, the Swiss national TV channel 1 (TSR1) broadcast a short doc on military drones, in french.

Happy watching and cheers

Added by Reto on March 11, 2010 at 3:05pm — No Comments

Earn your UAS wings

From POPSCI the new wings for drone types.…


Added by Gary Mortimer on March 11, 2010 at 1:43pm — 6 Comments

Too much power and pitch compensation is bad thing... not enough is bad too.

No ground crew today. Down view camera was installed.
Front camera view of todays flight testing of PID settings for throttle cruise 80 & throttle max 120, pitch compensation .30 Test battery a 2250mAh 3s lipo had 1 cell going bad,

I replaced battery and retested, but crashed flat and hard when I panicked and set Mode to FBW instead of Manual..…

Added by Mark Colwell on March 11, 2010 at 6:18am — 19 Comments

3D Robotics
Famous ABE lost at sea

A sad day for our underwater cousins:


Added by Chris Anderson on March 10, 2010 at 5:29pm — 23 Comments

Gauging Interest: 4 Channel ESC for Brushless Motors (RS232/PWM/I2C + Atmel AVR's!)

I am designing (and may soon produce) a 4 channel electronic speed controller (ESC) for brushless RC motors.

The Problem

It seems as though everybody who builds a quadcopter uses 4 individual PWM ESC's (that are often zip-tied to the rotor arms).…


Added by Brett W on March 10, 2010 at 5:07pm — 29 Comments

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