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Välja rätt mobiltelefon

juni 12, 2008 12:49 by Ludde

Bra mobiltelefoner är det många som säger att de har, men vad innebär då detta? Vem kan säga vad som är en bra mobiltelefon eller inte. Det är helt klart personligt vad man uppfattar som en bra mobiltelefon. Olika personer behöver ju faktiskt inte vara ute efter bara det senaste och det fränaste...

Just nu värderat 4.0 av 1 människor

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Analog Reading from Velostat Bend Sensor

njl-photolog
posted a photo:

Analog Reading from Velostat Bend Sensor

I came across Plusea's work at the beginning of 2012 and was just blown away by this lady's creativity and resourcefulness -- seriously, go take a look at her work here on Flickr [

www.flickr.com/plusea
] and Instructables [
www.instructables.com/member/Plusea
].

My order of Velostat arrived about two weeks ago and I've managed to play with it a little over the last couple of weekends.

It's piezo-resistive properties make an interesting and *cheap* alternative to (more expensive) commercially available bend and pressure sensors.

This is a closeup of the Velostat bend sensor and the change in voltage displayed on the line-graph.


Velostat Bend Sensor with Arduino

njl-photolog
posted a photo:

Velostat Bend Sensor with Arduino

I came across Plusea's work at the beginning of 2012 and was just blown away by this lady's creativity and resourcefulness -- seriously, go take a look at her work here on Flickr [

www.flickr.com/plusea/
] and Instructables [
www.instructables.com/member/Plusea
].

My order of Velostat arrived about two weeks ago and I've managed to play with it a little over the last couple of weekends.

It's piezo-resistive properties make an interesting and *cheap* alternative to (more expensive) commercially available bend and pressure sensors.

This is the setup with the Arduino [
www.arduino.cc
] converting the voltage from the circuit board to numbers and sending over to the laptop which is running a Processing [
www.processing.org
] Sketch to draw a line-graph of the numbers.


Close-Up of Velostat Bend Sensor

njl-photolog
posted a photo:

Close-Up of Velostat Bend Sensor

I came across Plusea's work at the beginning of 2012 and was just blown away by this lady's creativity and resourcefulness -- seriously, go take a look at her work here on Flickr [

www.flickr.com/plusea/
] and Instructables [
www.instructables.com/member/Plusea
].

My order of Velostat arrived about two weeks ago and I've managed to play with it a little over the last couple of weekends.

It's piezo-resistive properties make an interesting and *cheap* alternative to
(more expensive) commercially available bend and pressure sensors. Though, it has a non-linear response to linear pressure. Or in plainer English, its resistance decreases rapidly at first, but the decrease slows as more pressure (or bending) is applied.

I figured that I putting six of these sensors in parallel might even out the response to bending -- kind of a voting system almost. Much to my surprise the result appears to be useable and the response more linear.

This is just a quick prototype to prove the concept. A mix of office tape, 30-AWG gauge wire, Velostat and part of a Ziploc snack bag. LOL


De lovar virtuell datahall på bara några minuter: Interoute har lanserat en tjänst som man kallar virtuella data... http://t.co/2TbRxs1x

De lovar virtuell datahall på bara några minuter: Interoute har lanserat en tjänst som man kallar virtuella data...
http://t.co/2TbRxs1x

http://t.co/T4OoBoZV TT^TT