Hi Henri<div><br></div><div>If low cost is a goal I strongly suggest AVR chips with supporting circuitry instead of complete arduinos. �The chips + supporting circuitry come in at under $10. �If you find someone with an AVR ISP programmer they can load the arduino bootloader to the chips so further software revisions can be uploaded via serial. �Should bring the per-microcontroller cost down to ~$10.</div>
<div><br></div><div>Tom<br><br><div class="gmail_quote">On Tue, Apr 10, 2012 at 1:37 PM, Henri Kuschkowitz <span dir="ltr"><<a href="mailto:henri.kuschkowitz@gmail.com">henri.kuschkowitz@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word">Hi everyone,<div><br></div><div>I am hoping to be able to access the collective mind to get some information regarding pressure sensitive sensors for a possible project �for the upcoming�<a href="http://www.nuitblancheottawa.ca/" target="_blank">Nuit Blanche</a>�here in Ottawa.</div>
<div><br></div><div>I would like to gather the input from people walking over a defined area on the ground (8"x10" possibly larger). Technically, only a digital output (step on/off an area) and no analog data would be required. Since there is no compensation for this project a low cost for material is a big factor in my research.</div>
<div><br></div><div>After a short analysis, I came to the conclusion that the cheapest alternative to buying any kind of sensors would be creating them by myself, similar to�<a href="http://arduino.cc/playground/Projects/ArduinoUsers#fluidforms" target="_blank">fluidforms</a>�or a�<a href="http://www.instructables.com/id/Pressure-Sensor-Matrix/?ALLSTEPS" target="_blank">pressure sensor matrix</a>, and to combine them through multiplexing using one (or more) arduino(s). The sensors would be either mounted between sheets of plywood, possibly fabric or similar.�The installation would be outside, so I have to factor this in for what material to use as well.�</div>
<div><br></div><div>My question would be whether any of you have any knowledge or advice regarding such an endeavour, whether or not I might be on the right track or should look into a different (possibly simpler) alternative? Also,�I am not completely certain whether there would be any issue with multiplexing when a couple of sensors are capturing an input at the same time?</div>
<div><br></div><div><br></div><div>As always, I more than appreciate any good advice!</div><div><br></div><div>Thanks in advance,</div><div>Henri</div><div><br></div></div><br>_______________________________________________<br>
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