Comments on: MEMS Accelerometers http://www.imsolidstate.com/archives/245 Always improving things... Tue, 10 Aug 2010 17:13:41 -0600 http://wordpress.org/?v=2.8.4 hourly 1 By: imsolidstate http://www.imsolidstate.com/archives/245/comment-page-1#comment-729 imsolidstate Fri, 26 Mar 2010 17:18:56 +0000 http://www.imsolidstate.com/?p=245#comment-729 Assuming you could filter out vibration enough to get decent accuracy, you would develop error over time that would preclude accelerometers. You would need to re-zero the machine frequently. Encoders are probably a better choice. I was also reading recently (Electronics Design magazine I think) that MEMS accelerometers are really noisy. I can attest to that because the accelerometer I used in that post is almost unusable without filtering. Assuming you could filter out vibration enough to get decent accuracy, you would develop error over time that would preclude accelerometers. You would need to re-zero the machine frequently. Encoders are probably a better choice.
I was also reading recently (Electronics Design magazine I think) that MEMS accelerometers are really noisy. I can attest to that because the accelerometer I used in that post is almost unusable without filtering.

]]> By: fjr http://www.imsolidstate.com/archives/245/comment-page-1#comment-714 fjr Thu, 25 Mar 2010 18:24:52 +0000 http://www.imsolidstate.com/?p=245#comment-714 Hey, I was just looking at your cnc machine and then your general blog and saw this post. What if you mounted accelerometers on the head of the cnc machine. Wouldnt that add positive positioning feedback without messing with all the nasty encoders or using servos or all the other complicated means of confirming position. Am I right or wrong? Could you email me if you try it (i built a simple cnc machine as well). Accelerometers on cnc heads could revolutionize the industry.... Hey,
I was just looking at your cnc machine and then your general blog and saw this post. What if you mounted accelerometers on the head of the cnc machine. Wouldnt that add positive positioning feedback without messing with all the nasty encoders or using servos or all the other complicated means of confirming position.

Am I right or wrong? Could you email me if you try it (i built a simple cnc machine as well). Accelerometers on cnc heads could revolutionize the industry….

]]> By: imsolidstate http://www.imsolidstate.com/archives/245/comment-page-1#comment-162 imsolidstate Wed, 16 Dec 2009 20:35:30 +0000 http://www.imsolidstate.com/?p=245#comment-162 I used the reference design from the datasheet, you only need to supply an input bypass capacitor, and an output RC filter based on the frequency you are interested in. I used the reference design from the datasheet, you only need to supply an input bypass capacitor, and an output RC filter based on the frequency you are interested in.

]]> By: Dennis Booth http://www.imsolidstate.com/archives/245/comment-page-1#comment-158 Dennis Booth Wed, 16 Dec 2009 17:29:12 +0000 http://www.imsolidstate.com/?p=245#comment-158 Do you have schematics for these projects? I would like to play with them. Thank you for your time. Dr.Booth@gmail.com HTTP://bomarc.org Do you have schematics for these projects? I would like to play with them. Thank you for your time.
Dr.Booth@gmail.com
HTTP://bomarc.org

]]>