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Hi everyone! I´m working in my project with leds and I realized that the conductive thread I bought its not suitable for my project due to it has a high resistance, approximately 80 Ohms/meter and I have the distribution of the leds with a significance distance.  I bought it in Lamé lifesaver. I´m wondering if you have tried another conductive threads. I need it above all for a sewing machine and a as less resistance as possible.

 
« Last Edit: January 30, 2014, 06:51:53 am by leibniz81 » Logged

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I guess that many people have the same problem than me because this post has been read for many people but without answer.
It´s a little bit frustrated to not be able to find a yarn with a low resistance and suitable to sew with sewing machine. The best i found was  the yarn from lamé lifesaver. This yarn is good to sew with an industrial sewing machine because the width is very similar than the width of jeans´yarns but with a high resistance, approximately 80 Ohms/m. In my case, it,s too high because i need to see 5 volts in more than one meter in order to drive a transistor and the signal is quite attenuated.
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Conductive thread made from stainless steel has low resistance compared to others on the market.  Check out the variety that Sparkfun.com offers.  Here is a thin thread that is only 9 ohms per foot: https://www.sparkfun.com/products/10118

Note that conductive thread when used in the sewing machine should only go in the bobbin and never as a top thread, as it will fray and break otherwise.  In the bobbin it is able to lay flat against the work.

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