Simple accelerometer and tilt sensor - Page 2 - Electronic Circuits Projects Diagrams Free

be80be · 3rd June 2009, 04:42 AM

Hay I found this

Quote:

One ceramic rate gyro, of the same kind that's in your camcorder (to detect your hand jiggling and stabilize the video) or RC helicopter (to stabilize the tail), and a 2-axis accelerometer to correct for drift

I have one
didn't no what it was now I do. LOL going to dig it back out and see what else is in it. I no I have seen one of these 2-axis accelerometer in my junk box 1300sf of basement LOL.

dknguyen · 3rd June 2009, 04:46 AM

www.sparkfun.com has a bunch. You only need a single-axis gyro for a segway (but the PCB would have to be mounted vertically so the axis being measured is correct). If you used a dual-axis gyro then you could mount the PCB horizontally (but one axis would go unused).

How did you have one of those and not know? lol

be80be · 3rd June 2009, 05:20 AM

I didn't no a camcorder had one in it till I just read about it. All I wanted out of it was this

eyes for my bot but I have a long way to go before I can make that work. The pic is like what I have

Sceadwian · 4th June 2009, 03:42 AM

Actually to increase accuracy if I'm not mistaken a Segway uses multiple independent but integrated gyro's, to reduce drift. And they're also sampled REALLY fast.

dknguyen · 5th June 2009, 01:28 AM

Do they use multiple gyros to try and average out the bias and drift? I knew they used multiple gyros for redundancy so if one fails you don't hit your head.

be80be · 5th June 2009, 02:49 AM

Quote:

reduce drift

They use a accelerometer for reduce drift

Sceadwian · 5th June 2009, 03:39 PM

Dk, if they're there for redundancy might as well integrate them when they're not redundant. It's free precision.

dknguyen · 6th June 2009, 06:39 PM

Quote:

Originally Posted by Sceadwian

Dk, if they're there for redundancy might as well integrate them when they're not redundant. It's free precision.

That's what I meant.

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3rd June 2009, 04:46 AM	#17
dknguyen	www.sparkfun.com has a bunch. You only need a single-axis gyro for a segway (but the PCB would have to be mounted vertically so the axis being measured is correct). If you used a dual-axis gyro then you could mount the PCB horizontally (but one axis would go unused). How did you have one of those and not know? lol __________________ Tanaka Sensei (avatar) says: Please spell it "ridiculous" correctly! Not "rediculous". ^^ Last edited by dknguyen; 3rd June 2009 at 04:48 AM.

3rd June 2009, 05:20 AM	#18
be80be	I didn't no a camcorder had one in it till I just read about it. All I wanted out of it was this eyes for my bot but I have a long way to go before I can make that work. The pic is like what I have __________________ Burt http://mybe80be.com http://stores.shop.ebay.com/mybe80be__W0QQ_armrsZ1 Last edited by be80be; 3rd June 2009 at 05:21 AM.

4th June 2009, 03:42 AM	#19
Sceadwian	Actually to increase accuracy if I'm not mistaken a Segway uses multiple independent but integrated gyro's, to reduce drift. And they're also sampled REALLY fast. __________________ "Because I be what I be. I would tell you what you want to know if I could, mum, but I be a cat, and no cat anywhere ever gave anyone a straight answer, har har." Last edited by Sceadwian; 4th June 2009 at 03:43 AM.

5th June 2009, 01:28 AM	#20
dknguyen	Do they use multiple gyros to try and average out the bias and drift? I knew they used multiple gyros for redundancy so if one fails you don't hit your head. __________________ Tanaka Sensei (avatar) says: Please spell it "ridiculous" correctly! Not "rediculous". ^^

5th June 2009, 03:39 PM	#22
Sceadwian	Dk, if they're there for redundancy might as well integrate them when they're not redundant. It's free precision. __________________ "Because I be what I be. I would tell you what you want to know if I could, mum, but I be a cat, and no cat anywhere ever gave anyone a straight answer, har har." Last edited by Sceadwian; 5th June 2009 at 03:40 PM.