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Interests: inertial navigation, embedded systems, radio frequency systems, aerodynamics, wing types, aerial photography, fpv, telemetry, remote sensing, jet engines etc.

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UFO-MAN's Blog

In flight tunable gain demonstrator for UDB2 / Matrixpilot

Posted on July 18, 2010 at 5:39am 23 Comments

Hi. I have made some modifications to the MatrixPilot code to do tests on In flight tunable gain. If this is further refined, it will be possible to do tuning of P/D gains on roll, pitch and yaw axis while in flight. The idea is that the gains can be tuned with a spare button on your RC transmitter one after the other (separately) while you fly the plane in stabilized mode. The gain you want to tune is gradually increased until oscillation is seen at max desired airspeed… Continue

Kline Fogleman 3 (KFM3) Polystyrene Foam wing for UDB2 / Matrixpilot UAV

Posted on July 15, 2010 at 2:15pm 5 Comments

Hi. I have finished the first prototype of the lightweight KFM3 wing for my UDB2 / Matrixpilot UAV. The wing is made entirely out of Polystyrene. The benfits of this wing are: wide AOA range, wider stable CG range since lift is produced farther back on the wing surface, no aileron reflex needed so lower aileron reflex drag. I will add vinglets to reduce wingtip vortexes and drag due to vortex leakage out from the rear KFM surfaces. …


Hand held cutter head for the PWM hotwire controller

Posted on July 15, 2010 at 12:24pm 14 Comments

I have made a USD 2,- handheld cutter head for the PWM controller desribed in my previous blog post. The handheld cutter is nice for trimming off edges and so on. The spring keeps the wire tensioned. The final version don't need a series dropping resistor as the PWM driver stage uses two FETs.

The controller has also has been tested on a vertical setup for cutting spacers to my KFM3 depron… Continue

The "pro edition 5000 Ringnes Pils Arduino hot wire cutter controller" ready for service

Posted on July 10, 2010 at 1:54pm 19 Comments

I have finished my Arduino based pulse width modulated (PWM) hot wire cutter controller. It allows precise USB or analog temperature control of a hot wire of length from 10cm to 2m for use with manual cutters or CNC based cutter. The PSU is extermal…


Invensense IXZ500 gyros flown on UDB2 board with MatrixPilot r466

Posted on July 6, 2010 at 5:30pm 25 Comments

Just wanted to inform you all that I have sucessfully modded and flown William Premerlani's UDB2 board (red board) with the invensys gryo board designed by Russell Duffy. The AP / stab code was MatrixPilot r466 and the planes were a Fun Jet and an Easystar clone (higher wingloading and with ailerons). …


Comment Wall (1 comment)

At 11:00pm on October 12, 2009, Vikram said…
can you send me the visual python library program which you developed for uavdevboard. or any hint to do the same

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