Earl's Blog (37)

CAUTION ..I REALLY mean it !

3 years charging these lipo battries and no problem. 8-16-2013 my luck ran out. I was charging a 3 cell 2200 mah lipo while I worked at the computer.<br /
3 years charging these lipo battries and no problem. 8-16-2013 my luck ran out.

I was charging a 3 cell 2200 mah lipo while I worked at the computer.

It caught FIRE near me. Got it out the door just in time.

It burns HOT and long.
Could have burned the place down to the ground.



Added by Earl on August 15, 2013 at 11:30pm — 60 Comments

PX4 launch with tongue...

7/18/2013 8:45 Am MDT

Launch from Route 66 Casino near Albuquerque.

Almost took my tongue with it !

Highest altitude was 65000 ft.

Maximum speed 45 Mph

PX4IO with 430 Mhz telemetry worked GREAT. Used 20 element 440 beam on ground and 3 element on balloon. Saw telemetry all the way.

APM 2.0 worked good also. Only the top camera…


Added by Earl on July 18, 2013 at 1:30pm — 16 Comments

PX4 on High Altitude Balloon

On Thursday July 18,2013 we are going to launch…


Added by Earl on July 11, 2013 at 1:30pm — 8 Comments

Android Ground Station coming along.

Here is my APM2.5 at my apartment in Albuquerque NM. See the 3 waypoints and home position?

Thanks a bunch Kevin! http://www.diydrones.com/xn/detail/705844%3ATopic%3A1094076

My android tablet is a Pipo S2 at $122 from Banggood.com What a deal! There are some things you have to do to…


Added by Earl on January 26, 2013 at 11:30pm — 14 Comments

8-3-12 Balloon/Glider Flight

It flew ! For 50 feet off ground. Premature rope cut ! Dang....getting closer

Moment of ground release.

Next Friday...8-10-12...same time ...same place...another launch…


Added by Earl on August 3, 2012 at 1:58pm — 15 Comments

Balloon #6 7-27-12 OOPS !

You always have that ONE flight where nothing goes right. 7-27-12

The balloon slipped off the filling neck and got away. We had a backup balloon ! The second helium tank was EMPTY.

Dang..what luck.

Soooo... I will show pictures of the X8 wing we will try to launch Friday 8-3-12.

The Big Wheel antenna on the front is for the 5 WATT ATV TX on 434 mhz.…


Added by Earl on July 30, 2012 at 9:33am — 16 Comments

Flight #5 Balloon Friday the 13th flight !


The balloon is in the air as we type. @ 40,000 = ft.

Check out call sign ke5vsh-1 on aprs.fi website. You can track the progress in real time from 15:30 GMT 9:30 AM MST



Added by Earl on July 13, 2012 at 9:00am — 15 Comments

Another POP at 100k Ft. with APM2

UPDATE .... 7/2/12 ...

Another successful flight to over 100,000 feet with the same APM2 and 3DR radios on board. This picture is the balloon exploding at over 100,000 feet. Total flight was 101 mins this time. The APRS tracker failed this flight but the package was recovered in a 1/2 hr by a citizen calling the phone number on the package !

In about 2 weeks we…


Added by Earl on July 2, 2012 at 11:00pm — 10 Comments

Another 97,000 + ft Balloon with APM2 and 3Dradios

3rd time for this APM2 and 3DR radio combo ! The temps ranged from 100 F on ground to -51 F at one point in flight.

We did have a failure on the 3DR radio at -51 F. Radio died and won't come back.

We used the APRS.FI tracking as well and it showed great.

As you can see, there is NO insulation in our fiberglass box. Cameras on outside have no…


Added by Earl on June 17, 2012 at 6:10pm — 15 Comments

Another 100,000 ft Balloon with APM2 and 3Dradios on board

Can you spot a piece of the burst balloon against the total blackness of space at 100,000 ft. ?

You can also see how thin our atmosphere is !

See the curvature of the earth.

The wire with silicone at the end is part of the 2M…


Added by Earl on June 1, 2012 at 9:48pm — 19 Comments

APM2 Flies to 100k Ft.for 7 1/2 hours 300 miles !

On 4/14/12 we flew an APM2 ardupilot in a balloon to over 100000 feet for 7 1/2 hour 300 mile + flight !

The flight originated near Albuquerque NM and landed near Trinchera ,CO. The flight was over 300 miles and lasted far longer than we planned. The flight was so long the 5 on board cameras ran out of memory and battery before the flight ended.

The chase…


Added by Earl on April 15, 2012 at 5:00pm — 45 Comments

Er9x transmitter now with MavLink

The er9x transmitter now will display MavLink data on the LCD.

Gerard Valade a DIYdrones member wrote the software and myself who was the principal debugger.

Works at 19200 and 38400 baud. Still have a problem with 57600 baud. Some kind of timing issue yet.

Here is a pic of the arduplane 2.30 MavLink display on the er9x.

There is an Xbee inside the er9x to…


Added by Earl on March 19, 2012 at 9:30am — 45 Comments

Raspberry-Pi for autopilot ?

How about this new Raspberry-pi Linux computer for $25 or $35 coupled with a sensor board ?

Has a header on board, video 256k memory hdi video or composit usc sdcard.......

see here for all specs.. …


Added by Earl on March 5, 2012 at 9:00pm — 32 Comments

Bad mega1280 serial0 input pin? All is not lost !

I have a spare Mega 1280 where the serial input line is bad.

So how to program it with no FTDI serial0 input ?

Notice the ISP pins in lower left ?? Thats how !

I use a program called eepc that is used to reprogram the er9x R/C TX. It does it via a $14 usbtiny ISP device from Sparkfun. Google for the er9x firmware update.…


Added by Earl on August 15, 2011 at 8:30am — 2 Comments

er9x TX with Ardupilot interface

Well the er9x TX and ardupilot combo is finished !
I use an Ardupilot and display it on the TX LCD on 10 screens (all backlight)

No external things hanging out !

All internal in the 9x.

Plus I have an autopilot with GPS, waypoints, stabilization, auto mode, takeoff/landing, and more to come.

Pic 1 is…

Added by Earl on July 24, 2011 at 3:16pm — 12 Comments

Intersting UAV

Added by Earl on April 19, 2011 at 4:30pm — 22 Comments

er9x and ArduPilot Together

Short movie on er9x and…

Added by Earl on December 2, 2010 at 7:00pm — 5 Comments

ER9x TX LCD Display for ArduPilot

for those of you who want to display the ardupilot data on your tx lcd here is some more info.




Added by Earl on November 30, 2010 at 11:00pm — 2 Comments

New Design for TX with XBee Data built in 2 ants.

TH9x TX modified with an XBee 900mhx built in to display ArduPilotMega data on TX LCD Screen.

Added by Earl on November 5, 2010 at 9:07pm — 1 Comment

Telemetry on TX Screen progress

Added by Earl on November 5, 2010 at 8:50pm — 5 Comments


Season Two of the Trust Time Trial (T3) Contest 
A list of all T3 contests is here. The current round, the Vertical Horizontal one, is here

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