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robert bouwens
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  • schneisingen
  • Switzerland
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surprise

Started Jun 8, 2011 0 Replies

gyro drifti noticed a few problems when flying with the oilpan and an atmel chip. mainly the loss of control…Continue

tri-copter

Started Apr 21, 2011 0 Replies

hi all,i am making less progress as expected, but i will fly soon 32 bit code :)since a few days i have a tri-copter frame right next to me.need to add the yaw servo and ...$ yes you guessed it - the…Continue

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Jan 2, 2012
robert bouwens liked Touchthebitum's video
Jun 24, 2011
robert bouwens posted a discussion

surprise

gyro drifti noticed a few problems when flying with the oilpan and an atmel chip. mainly the loss of control authority when flying not so smooth.would be interesting to know if anyone has soldered the pad as described in the link.this weekend is slightly longer and i will give it a try with mp32.the capacitors seems to make 'the' difference.regardsrobert yes i have flown with soldered pads and did not notice…See More
Jun 8, 2011
robert bouwens commented on Roberto Navoni's blog post ArmFox V4 Flycam configuration first test.
"huts off! it looks like this is the breakthrough needed."
Jun 1, 2011
Thomas Bredehorn and robert bouwens are now friends
May 24, 2011
robert bouwens replied to Thomas Bredehorn's discussion Motor PWM with 550 Hz, how to get is slower
"ok, for me it is clear. when you write to the timer register it will have an immediate effect. the prev. run is not finished before the new timing is in place. else you have problems when implementing a capture and compare routine where you are…"
May 23, 2011
robert bouwens replied to Thomas Bredehorn's discussion Motor PWM with 550 Hz, how to get is slower
"hmm, basically to this is wrong. we need correct gyro accel value pairs - ok? the limiting thing is the adx335. from the datasheet:   SETTING THE BANDWIDTH USING C X, CY, AND CZ The ADXL335 has provisions for band limiting the X or more…"
May 23, 2011
robert bouwens replied to Thomas Bredehorn's discussion Motor PWM with 550 Hz, how to get is slower
"yup, i mean the sensors on the oilpan. - isz500 - idg500 - adxl335 these are the sensors of interest. the two gyros can be set to different internal sampling rates. the question is how... have not yet looked at the analog devices chip in detail…"
May 22, 2011
robert bouwens replied to Thomas Bredehorn's discussion Motor PWM with 550 Hz, how to get is slower
"i mean you lift a pentium processor in the air. plus a new set of ventilators for cooling down the main cpu ;-)   maybe i should start a new discussion. has someone a programming manual for the invenssense gyros and analog device…"
May 22, 2011
robert bouwens replied to Thomas Bredehorn's discussion Motor PWM with 550 Hz, how to get is slower
"ok, i have no scope. the output of the rcchannel goes directly into the OutputCh function which again writes directly into the timer register. for some reason the timing did change. it also might be possible that writing to fast to these register…"
May 22, 2011
robert bouwens replied to Thomas Bredehorn's discussion Motor PWM with 550 Hz, how to get is slower
"i paid about 17 dollar each. there was a message on the diydrone forum that from time to time the esc's have a bad quality because they can't deliver the volume for the market and look for a 2nd source... i also a few spare turnigy ae-25.…"
May 22, 2011
robert bouwens replied to Thomas Bredehorn's discussion Motor PWM with 550 Hz, how to get is slower
"thanks that would explain why my esc' did beep. i assume that my esc's are way too cheap ;-) so i go back to 200 hz using these esc's. regards robert"
May 22, 2011
robert bouwens replied to Thomas Bredehorn's discussion Motor PWM with 550 Hz, how to get is slower
"hi, it is still my old frame with the atmel. for the testing that combo is nice. the motors produce lot's of vibrations and with gusts in the wind i notice a big amount of gyrodrift. my intention is it to reduce the overreaction of dcm with…"
May 22, 2011
robert bouwens replied to Thomas Bredehorn's discussion Motor PWM with 550 Hz, how to get is slower
"i just rised the speed of the main loop to 250 hz. it is windy and i had to move the stick up to the physical end to fight against the wind. the copter come down two times belly up and the esc's didn't stop with beeping until i pulled…"
May 22, 2011
robert bouwens commented on Thomas Bredehorn's video
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ArduCopter 32 First Outdoor Flight

":-) full ack - the math lessons are way back - 30 years. ahh hmm, i did start the same way worried about a crash. but once the head say that frame has reached it's end of life another life starts. mod the sw and look what happens :O in the mean…"
May 21, 2011
robert bouwens commented on Thomas Bredehorn's video
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ArduCopter 32 First Outdoor Flight

":-) loops are easy. the jakub frame is aged. the arms are bend. now it is the ideal test platform to verify mods. to create a loop just give 'full' throttle ;-) then it happens :O the first time i did this i was worried - but now it's…"
May 21, 2011

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