Inductive Sensing Design Challenge: USB Microphone based on the LDC1000 Inductance to Digital Converter (week 4)

RE: Inductive Sensing Design Challenge: USB Microphone based on the LDC1000 Inductance to Digital Converter (week 4)

vsluiter — Thu, 22 May 2014 19:54:21 GMT

Have you thought about a flexible polymer carrying film (or some other suspension), with a ferromagnetic center? That way you might be able to get more excursion with a smaller diameter film.

RE: Inductive Sensing Design Challenge: USB Microphone based on the LDC1000 Inductance to Digital Converter (week 4)

DAB — Thu, 22 May 2014 18:15:39 GMT

Part of the challenge is to try many different designs.

You never know when an unlikely combination of materials can give you a neat affect. Ie. the Thomas Edison approach to science. [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-9ff0572e-1372-4426-aa7f-135967ba90ce/contentimage_5F00_938.png:16:16]

After all, its not a good experiment unless something loses the magic smoke.

DAB

RE: Inductive Sensing Design Challenge: USB Microphone based on the LDC1000 Inductance to Digital Converter (week 4)

vsluiter — Wed, 21 May 2014 20:36:41 GMT

Good piece of reference material!!

Are you able to purchase these thin films from somewhere? Would you be able to verify what you've found?

RE: Inductive Sensing Design Challenge: USB Microphone based on the LDC1000 Inductance to Digital Converter (week 4)

michaelkellett — Wed, 21 May 2014 17:02:37 GMT

Hello Sammy,

I'm worried about the graph that shows thicker membranes being displaced more - it doesn't seem right - the thicker the membrane the stiffer it will be and the displacement will be lower. I've only looked briefly at this (have to go home), I'll try to look again tomorrow.