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Latest Activity

Ravi replied to Randy's discussion ArduCopter-3.2 beta testing
"this is the GPS compass + Mag. i intend to use for future flights since i had been having GPS lock problems for last one month. typically it takes 19+ sats HDOP is under 1.5. this had been used buy some flyers  in this…"
Ravi replied to Randy's discussion ArduCopter-3.2 beta testing
"@manu, the solar activity was very high on oct 20 and oct 21. The K-index was 5. so it is quite possible that my GPS loss was becasue of solar activity. what i am doing is that i will try using the new ublox M8N GPS which is supposed to lock to 19…"
Ravi replied to Randy's discussion ArduCopter-3.2 beta testing
"thanx fellow drone flyers for so much of support. i really admire this community. i ran the compassmot. the value was less than 30%. I will now move the GPS 5cm up from the current location and further away form the pixhawk and PDB. i have a 500mW…"
Oct 24
Ravi replied to Randy's discussion ArduCopter-3.2 beta testing
"hi randy, had been flying form AC3.2-rc2 to AC3.2-rc12. Did not come across any issue that could be noticed. did about 20 auto missions. only issue i get is when using 3DR GPS on pixhawk. The GPS looses it's satellite lock during flight. This…"
Oct 23
Ravi commented on Andrew Tridgell's blog post APM:Plane 3.1.0 released
"can someone suggest the optimum modem baud rate for getting long range telemetry from 3DR modem. right now i use 19200. below this i am not able to read/write waypoints on pixhawk."
Oct 17
Ravi commented on Andrew Tridgell's blog post APM:Plane 3.1.1 released
"HI Tridge, i had been flying my craft with APM2.6 using AP3.0.1. Lately there has been a altitude error of 18 mts. i have the mission planned for all way points as 80 meters.But the craft is maintaining 98m. even in loiter after RTL the craft is…"
Oct 4
Ravi commented on Azjeg's blog post APM/Pixhawk compact GCS build
"sgt ric, do you really have that IBM portable computer. i am very fond of vintage computers. that is a rare to find item these days."
Sep 25
Ravi commented on Lorenz Meier's blog post ARM announces new Cortex M7 core, uses PX4 and 3DR vehicles as use case
"this sounds that the pixhawk boards with M7 can be released in relatively short time. Compatibility: Cortex M7 is backward compatible with Cortex M4 instruction set STM32 F7 series is pin-to-pin compatible to the STM32 F4 series "
Sep 25

Profile Information

About Me:
Very eager aeromodeller. I find UAV is the ultimate fruit of all the hard work you do while making those miniature r/c planes and the heartbreak you get when they crash.
New Delhi

Ravi's Blog

counter rotating motor and prop set

Posted on October 24, 2011 at 10:08pm 13 Comments

this is a wonderful counter rotating BLDC motor and prop set ideally suited for planes between easystar and skywalker because of small footprint for the power equivalent 30xx size motors. it delivers 270 watts with 3S Lipo. the mounting would be bit tricky though. never tried but would order soon. very useful because prop diameter has to be restricted on pusher prop aircrafts with tail boom below the prop. once i get mine would put the performance parameters on the same blog. available at…


rotary engines for UAV

Posted on October 15, 2011 at 7:24pm 5 Comments

hi friends, on 14 October 2011 there was an exhibition organized by some 20 UAV manufactruing companies in New Delhi, India. It was wonderful to have something like this in India. The technology dispalyed was amazing. there were fixed wings and rotary winged UAV's. The show was won by this twin cylinder rotary engine designed for UAV's. The manufacturer claims to having nil vibrations in the engine. a very important issue for IMU's in the autopilot.  beautiful engine with circular cross…


Aluminum Housing for APM

Posted on September 30, 2011 at 5:30am 8 Comments

hi friends, whenever we fly in automode using APM there is always some chance of a bad crash. we do lose some expensive equipment. APM is quite expensive for almost $400 and not counting the mid night hours that go in debugging. so i have worked on a aluminum APM housing which is quite strong with 1.5mm thickness and is…


some good hardware for easystar fliers

Posted on August 12, 2011 at 8:06am 5 Comments

there is some good hardware combinations for easystar FPV. this is motor 2835-2200KV, a 6x5 propeller and a beautiful 35mm aluminium spinner form www.leadershobby.com. a lawmate 1.2Ghz tranmitter and a lawmate camera from www.hobbywireless.com. everything is working verywell with this combination. a 2200mAh zippy battery from www.hobbyking.com. just some information i…


Comment Wall (4 comments)

At 1:16am on July 23, 2008, jitendra gurjar said…
hi r u in uav s too . my mail id is jtendra.gurjar2gmail.com
At 10:50pm on July 24, 2008, Ravi said…
yes i am very much into model aeroplanes and trying to obtain a navigatin system for my project. i do not intend to built a system from scratch but use commercially avaialble systems. i think i am going in for micropilot with navigation, attitude, alt hold and telemetry. where r u located, i am in south delhi. ravi, myemail is ravinewdelhi@yahoo.com
At 10:41am on October 25, 2008, SUNEEL KAPUR said…
i have recently come to delhi. our interest seems to be same. call on 9717848302
At 10:06pm on September 1, 2011,
John Arne Birkeland

Hi Ravi. I do not know the Thomas Scherrer UHF system, but if the PWM sum is a standard 8 channel signal it should work. Just remove the propeller for safety and try and see if it works. It's not like anything will explode or anything if they aren't compatible. :)

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