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Have a look at Map Bot over at GlacialWanderer, this robot is in the early stages but when it’s done it will be able to map out a floor. The main sensor it uses is an ultrasound sensor, one that most of us have seen many times before. But it also uses an interesting bend sensor that I have never seen before. Here are some details of the bend sensor being tested. Does anyone know how these sensors work? I think it may be some sort of piezoelectric mechanism… "The purpose of this robot is have a bot that can go around and map out a single floor of my house and then use that map to intelligently traverse the mapped area. So far I’ve only written some diagnostic software to verify all the subsystems of this robot are functioning properly."
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April 13th, 2008
[...] hackedgadgets.com, [...]
April 13th, 2008
The bend (flex) sensors:
where I got mine:
http://www.sparkfun.com/commerce/product_info.php?products_id=8606
datasheet(if you can call it that…):
http://www.sparkfun.com/datasheets/Sensors/Flex/FlexSensor.pdf
http://itp.nyu.edu/physcomp/sensors/Reports/Flex
April 13th, 2008
Thanks Proteus,
Here is the part I was looking for (found in your second link)
“The Flexpoint Bend Sensor was developed through testing a thin potentiometer which would show analog feedback from finger movement. The bend-sensitive carbon-based ink was developed at that point.”
I wonder what bend sensitive carbon based ink is though…
April 13th, 2008
i always wanted to use this for bot mapping…
http://utbot.sourceforge.net/index.shtml
have the server host a game and the bot run around either dying or firing when it hits a wall to mark it in the server and then build a map. but hey i had kids and well they grow up and things get shelved. lol…. someday i’ll get back to it.
but i would love to see the schematic or build of bot a little more closely (maybe i can get some cheap labor from the kids)
April 13th, 2008
Jameco sells the flex sensors, as well.
April 14th, 2008
Bend sensor is probably based on the wheatstone bridge principle.
April 15th, 2008
The ink is probably just some kind of conductive liquid with a resistance value. Might be like saltwater in a sense.
April 16th, 2008
[...] hackedgadgets.com, [...]
April 6th, 2012
where do i get flex sensors?