Ha sorry, I meant something like this, but not as good spec as a professional one.First you need to know what you want to level!...audio?...terrain?...emotions?...???
Ken
Hi #12Here's one for $364, which is a great bargain, considering that they cost $6000 when I was working on them in 1976.
http://www.ebay.com/itm/Spectra-Pre...032?pt=LH_DefaultDomain_0&hash=item4d1065d190
Obviously, you can make something cheaper and more specific to your needs. ...
Hi BillB3857Here is one I cobbled together to auto-level my RV. Sorry to say, I no longer have the schematic of what I put together. The way it is set up, if the photo sensors both see bubble or both see fluid, it says level. Reasoning behind that is that the bubble size changes with temperature.
No optical is needed, I am more interested in how it work and how to implement it electronicallyDoes it need to be optical? How about a piece of tubing, two syringes without pistons and some water?
Thanks for the ideaHere is a good cheap start for an experimenter.
http://www.google.co.uk/#bav=on.2,or.&fp=3732f55a6eaa9559&q=mercury+tilt+switch
Unless you *REALLY* have too much time on your hands - DIY spec laser spirit levels turn up at various times at discount store chains,Ha sorry, I meant something like this, but not as good spec as a professional one.
http://item.mobileweb.ebay.com/viewitem?itemId=111131406307
Hi ian fieldUnless you *REALLY* have too much time on your hands - DIY spec laser spirit levels turn up at various times at discount store chains,
In the UK we have mainly Lidl & Aldi, I bought a laser-level from Lidl a year or two ago for about 6 - 7GBP.
IIRC - EPE magazine, not too long ago published an accelerometer based level - you'd have to tape a laser pointer to it yourself.
Googling "accelerometer level sensor"; I got 1.48 million hits.Hi ian field
Someone asked me how these work, I first thought it's pretty easy, just some accelerometer and/or gyro, then adjust it with some step motors.
But when I think again, I have no idea how to decide which motor to control and how many steps. It's not as easy as I first thought.
I just want to find out how it actually work, I do not intend to buy one, or build one. At lease no now. (although it would be fun to just build one )
Hi ian fieldGoogling "accelerometer level sensor"; I got 1.48 million hits.
//first calculate blah blah
//then calculate blah blah
//drive motorA xyz steps
//drive motorB xyz steps
//drive motorC xyz steps
//now the plane is level (eg. z=1g, x=0g, y=0g)
+1You would only need two motors..
If you are capable to make your own, why spend $2K. And, thanks for your help, I think I am starting to understand it now, appreciated!There are fully automatic systems for RVs that will fully level the unit, but prices start at about $2K. I'm a tight wad.
I'm not so sure. I don't think it can pass a DC voltage to the audio jack. If you mean an AC signal, maybe to allow a frequency-to-voltage conversion, that could work....to an analog voltage to the audio jack would also be possible if you need to control something.