"I have had some encouraging results with Tiny CLR on a tricopter Kiwi Tricopter the >NET may be slow but it seems fast enough lease see Hover Test 1
"
Roy Morgan's Discussions
Which accelerometer would be better? BMA180 or ADXL345 for an AHRS
Started this discussion. Last reply by Martin Seven Oct 1, 2010. 4 Replies 0 Likes
Currently working on an AHRS for my netduino tricopter and can't decide which accelerometer to go with, either the BMA180 from bosch …Continue
Tags: Accelerometer, ADXL345, BMA180
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Martin Seven replied to Roy Morgan's discussion Which accelerometer would be better? BMA180 or ADXL345 for an AHRS"The gyro resonance frequency is rated at around 30 kHz on all three axes (I believe it's 33, 30 and 27 kHz), which spells excellent vibration rejection. The acc has similar numbers."
Krzysztof Bosak replied to Roy Morgan's discussion Which accelerometer would be better? BMA180 or ADXL345 for an AHRS"How about vibration resistance?"
Roy Morgan replied to Roy Morgan's discussion Which accelerometer would be better? BMA180 or ADXL345 for an AHRS"thanks, that answers it for me BMA180 it is!"
Martin Seven replied to Roy Morgan's discussion Which accelerometer would be better? BMA180 or ADXL345 for an AHRS"I fell in love with the BMA180 (and its "sister" gyro ITG-3200). Excellent resolution, accuracy, interface, EMI resistance, form factor, and price, all in one package. It's my recommendation no matter what the application.
Re: noise…"
Roy Morgan posted a discussionWhich accelerometer would be better? BMA180 or ADXL345 for an AHRS
Currently working on an AHRS for my netduino tricopter and can't decide which accelerometer to go with, either the BMA180 from bosch http://www.bosch-sensortec.com/content/language1/downloads/PI6828-e(1).pdf or the well known ADXL345 http://www.analog.com/static/imported-files/data_sheets/ADXL345.pdf as far as I can tell the…See More
DeveloperJohn Arne Birkeland commented on Roy Morgan's blog post Performance of netduino reading analog and digital
"500 iterations/sec for reading 4 analog inputs, might be acceptable but hardly impressive. Even a cheap 8 bit atmel chip will do about 2000 iterations/sec when reading four adc inputs.
I would suggest that you start using ADC interrupts, to prevent…"
Patrice Mainville commented on Roy Morgan's blog post Performance of netduino reading analog and digital"Real cool input! I plan to make a quad with a netduino! and that give me some confidence in the netduino! Still one glitch, the missing of EEPROM, but, ill figure something!
thank"
Roy Morgan posted a blog postPerformance of netduino reading analog and digital
Since initially deciding on using a netduino for a tricopter, one of the first concerns I had was over performance with it running on the .Net micro framework with regards to sensor reads, since it was mentioned by others that similar boards were slow to read. So now I've got my hands on one I decided to run an actual test on it. Although no sensors were actually connected the values read were actual reads (just the floating voltage of the pins from background noise), so no real difference from…See More
Roy Morgan commented on Roy Morgan's blog post Netduino for a tricopter"Hi Leon, I can see why that could cause problems if the input/output are slow, however I'm not sure what they are like on the netduino (not getting the hardware till next month). I'm just coding using the emulator at the moment and to…"
Leon commented on Roy Morgan's blog post Netduino for a tricopter"Hello! I am also working on a UAV that uses .Net Microframework. Take a look here:
http://www.diydrones.com/forum/topics/bob4-indoor-autonomous
I think that such a hardware is OK only for naturally stable UAV, like my coaxial helicopter, or for…"
Patrice Mainville commented on Roy Morgan's blog post Netduino for a tricopter"gona give the netduino also a try for a quad copter
another desavantage is no EEPROM! and I haven seen the only 4 PWM! Hope that will be enough since I want to do more but steel, Have to make it fly before with arduino nano !"
Roy Morgan posted a blog postNetduino for a tricopter
Finally got round to getting some time to work on a uav, decided to start with a tricopter as it should be the easiest to work on indoors for now. Initial plan was to go with a couple of boarduinos or an atmega but stumbled across the netduino which is an open source board and software for the micro.net framework, and its available in the uk for around £24 which is a bargain considering its running on a 32 bit arm microcontroller and at 48mhz should give about 40mips so plenty of processing…See More
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- flown normal rc models, and want to try out making my own uav system.
Roy Morgan's Blog
Performance of netduino reading analog and digital
Posted on September 1, 2010 at 2:33pm 3 Comments 0 Likes
Since initially deciding on using a netduino for a tricopter, one of the first concerns I had was over performance with it running on the .Net micro framework with regards to sensor reads, since it was mentioned by others that similar boards were slow to read. So now I've got my hands on one I decided to run an actual test on it. Although no sensors were actually connected the values read were actual reads (just the floating voltage of the pins from background noise), so no real difference from… Continue
Netduino for a tricopter
Posted on August 20, 2010 at 5:49am 3 Comments 0 Likes
Finally got round to getting some time to work on a uav, decided to start with a tricopter as it should be the easiest to work on indoors for now. Initial plan was to go with a couple of boarduinos or an atmega but stumbled across the netduino which is an open source board and software for the micro.net framework, and its available in the uk for around £24 which is a bargain considering its running on a 32 bit arm microcontroller and at 48mhz should give about 40mips so plenty of processing… Continue
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