Gender
Male
About
Location
Spring, TX
About Me:
Software engineer, very basic electrical engineering skills
Please tell us a bit about your UAV interest
Built Arducopter, interested in photography (still/video) My first quad uses the APM2.5+, 550mm Turnigy Talon v2 frame, NTM 28-30 750kv motors, 10x4.5 props, and a 2200mAh Turnigy Nano battery.
Hometown:
Houston
Activity Feed
"Thanks! I like your idea of putting the sensor like that - I bet many will be able to put the sensor near the landing gear (even a little off-center would be OK I suspect.)"
"@Christian - great to hear and very encouraging! Any chance you might have a picture of the new sensor placement?
And is there a link to the details about a Raspberry PI-based ESC that you've built?"
And is there a link to the details about a Raspberry PI-based ESC that you've built?"
"A few thoughts, probably not terribly useful but they are some troubleshooting steps anyway:
Could you be running out of battery and going into failsafe? I have failsafe turned off for this reason - I like the idea, but I don't like the idea of it…"
Could you be running out of battery and going into failsafe? I have failsafe turned off for this reason - I like the idea, but I don't like the idea of it…"
"@Christian - thanks for the pics. You have better placement than me, better vibration damping, and better cable shielding. Oh and of course you're using the better sensor. Maybe Tom @ Maxbotix will be able to help."
"@Christian - I'm with Gary - it would be interesting to see a picture of your quad and where the sonar sensor is too.
@Gary - thanks for the link - I didn't realize the AE sensors were more noise tolerant in addition to having a different beam…"
@Gary - thanks for the link - I didn't realize the AE sensors were more noise tolerant in addition to having a different beam…"
"@Hugues - OK, but take a look at my plot - the barometer looks better good and I never got above 10m too. It is interesting in any case regarding how the barometer works versus the sonar."
"@Gary - I would like that to be true, but I suspect the XL line needs the current to power its analog outputs.
@Hugues - overall looks very good, but then at about line 4900 I see noise on the sonar plot.
I also think it is interesting that your…"
@Hugues - overall looks very good, but then at about line 4900 I see noise on the sonar plot.
I also think it is interesting that your…"
"@Gary - I read that a 100ohm resistor was needed for the MB1000 so that is what I used (this is what Maxbotic recommends here: http://www.maxbotix.com/documents/MB7961_Datasheet.pdf). It isn't in the photo because I put it inline with the +5V line…"
"@Hugues - select CTUN, then Sonar Alt. I like to put Baro Alt on the same graph in order to compare the two, but Sonar is all that's really needed. Thanks!"
"@Tom - I read that and modified my MB1000 with the recommended power filter circuit as seen in the photo (well, except for the resistor). Since I had already purchased it, I wanted to give it a try rather than buy the MB1240. Of course as Gary has…"
"@Christian - agreed, that's what I'm thinking as well. Algorithms can only take you so far and of course can result in bad behavior if your algorithm distorts reality far enough. Hitting the mailbox because you disbelieve the sensor won't help.…"
"@Georacer - thanks, that's exactly the type of thing I was thinking of - and I like the idea of tuning it based on how much delay you are willing to insert."
"I wonder if some hysteresis code could be written which helps smooth out really aberrant values. I know we want real-time behavior because we're trying to avoid obstacles, but there is probably time to react.
I'm thinking of storing a memory of…"
I'm thinking of storing a memory of…"
I have been reading with interest the sonar usage (right sensor, etc.) because I had already purchased the previously recommended sensor (EZ0) but had yet to add it to my quad. After reading the posts by Maxbotix and others, I went ahead and took…
