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Latest Activity

Ravi commented on Alex Zarenin's blog post Yet another Flight Control Board
"it's a great job to design a flight controller single handedly. this type of project generally need a team. you knowledge can be of great help to the members of this blog. in improving the hardware."
8 hours ago
Ravi replied to Randy's discussion ArduCopter-3.2 beta testing
"@chiristian, i think the rc3 supports third compass. the param list says third compass."
17 hours ago
Ravi replied to Randy's discussion ArduCopter-3.2 beta testing
"hi, you never know could be solar particles because of solar flares. they were predicted for this year. christian by the way which connector of pixhawk do u connect the second compass. i guess *- rc3 has provision for three external compasses."
Ravi replied to Randy's discussion ArduCopter-3.2 beta testing
"thanx randy, i think that would be great if the mission planner can show which GPS is being used at a specific time. that way we can compare the performance of different GPSs.  is there any similar parameter for second compass? i understand…"
Ravi replied to Randy's discussion ArduCopter-3.2 beta testing
"Hi fellow flyers, is there any parameter to be enabled when using dual GPS in UART port 4/5 of pixhawk. also is there any parameter for dual compass to be enabled. which port needed to be used for second compass. i intend to try dual GPS and compass…"
Ravi replied to Randy's discussion ArduCopter-3.2 beta testing
"i did about 50 auto missions with AC3.2-rc2 and did not have a issue in Auto, stabilize, RTL, battery Failsafe, Loiter. Only in Hybrid mode the craft keeps drifting upto 5meters before holding position. my frame is a 3DR frame (old type) with…"
Jul 17
Ravi replied to Randy's discussion ArduCopter-3.2 beta testing
"i think all those fine tuning the PIDs of copter must put a dummy load of gimbals + camera before they begin tuning. the PIDs would be different with and without camera specially THR_MID and to some extent roll and pitch P because the expected…"
Jul 12
Ravi replied to Randy's discussion ArduCopter-3.2 beta testing
"@emin, the best is you can use one of the spare channels on the Rx directly to retract servo unless you want auto retract (at certain height). do not use the RCOUT of pixhawk/APM. line ch8 or ch7. use a Y chord for two servos."
Jul 8

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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