also see: Connections >> Solderability Tests There are a range of different conductive fabrics available. Some of the most frequently used conductive fabrics, tend to be the most available. LessEMF is a retail company that stocks a great range of conductive fabrics for electro magnetic field shielding. It seems like some of their fabrics are manufactured by Shieldex, but LessEMF renames the fabrics for their own sales and so it is unclear which ones are really the same. I’ve tried to match a few up through comparison: Shieldex: MedTex E 130 DS = LessEMF: Stretch conductive fabric Shieldex: Armor RTF = LessEMF: Zelt Conductive Fabric Shieldex >> (USA, DE) Balingen 1 x 20 cm = 4 Ohm 0.5 x 20 cm = 7 Ohm Highly conductive, nice and MedTex E 130 DS 1 x 20 cm = 13 Ohm 0.5 x 20 cm = 23 Ohm Super similar, if not the same as LessEMF’s Stretch Conductive Fabric. MedTex P 180 OS From the small sample I have it looks like a nice stretch conductive fabric to work with. Toray
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High Reliability Mini Peltier Element 2.1v - Buy Peltier Element,Peltier Module,Mini Peltier Element Product on AlibabaA Peltier Element is a semiconductor device that freely conducts cooling,heating & temperature regulation through DC electricity High Reliability Mini Peltier Element 2.1V Product Specification Features 1) It is suitable for laser diode cooling, infrared systems, electro-optics and electronic equipment and other low wattage applications 2) Fast cooling,& Eco-friendly 3) Small size&Easy to operate 4) Top quality & competitive price 5) Customizable 6) All products are RoHS and REACH compliant. More the Miniature TEM series you can choose. ®Imax: Maximum input Current (A); ® Qmax: Maximum heat pumping capacity (W); ®Vmax: Maximum input Voltage (V); ® Tmax: Maximum Temperature difference (°C); ®Th: Temperature of the TEM hot side during operation (°C); ®N: Number of Thermocouples (P and N type pairs) We have 5 TEM and 5 TEA product lines, with the capacity of 3M PCs TEM and 30K PCs TEA per year. Stable supply of Peltier modules with high performance and durability. ♦ How to select TE products? 1. 2. 3. 4.
Lynne Bruning - eTextiles, Art, FashionHOW TO GET WHAT YOU WANTThis is a super simple fabric LED strip with 25 LEDs, LiPo battery power and an on/off switch. Materials and Parts: - non-synthetic base material such as cotton or silk (better for soldering on!) - solderable conductive thread from Karl-Grimm: >> - Tiny SMD LEDs: >> - LiPo battery: >> - LiPo socket with switch: >> - 10 Ohm resistor Instructions: - Using a sewing machine, sew two parallel lines of the solderable conductive thread to the fabric by zig-zaging over them with a regular (non-sythetic) thread. - Solder on the LEDs. - Cut the conductive thread on one of the leads and insert the 10 Ohm resistor. - Sew and solder the LilyPower module. - Plug the battery and turn on. - Use stuffing or padding with translucent gauze fabric to diffuse the light if desired.
HOW TO GET WHAT YOU WANTIf you want to include LED lights in your projects, one of the classic options used to be to wind the legs of a through-hole LED around the tip of a pair of needle-nose pliers, making rings that could then be sewn. Another option introduced by Leah Buechley, was to solder tiny metal crimp beads to the ends of a surface-mount LED, making it sewable. But by now there are some more options out there and this posts tries to collect different solutions for sewable LED lights. Homemade Solutions for Sewable LEDs Solderable and Sewable Extensions An easy solution for surface mount LEDs is to solder a strip of very flexible wire, or even a solderable conductive thread (like the ones from Karl Grimm), to the ends of the LED and you don’t even need to make it into a loop. Solder LED to Flexible PCB Breakout Unfortunately the spacing between the strip’s holes is slightly narrow, so it can be hard to solder on a surface mount LED without covering one of the holes. Leah Buechley’s crimp bead LEDs
3lectromodehomemade patchalso: neoprene bend sensor, conductive thread Bend Sensor, Bend Sensor (thread) This bend sensor actually reacts (decreases in resistance) to pressure, not specifically to bend. But because it is sandwiched between two layers of neoprene (rather sturdy fabric), pressure is exerted while bending, thus allowing one to measure bend (angle) via pressure. >> Fabric Bend Sensor Instructable >> Neoprene Bend Sensor IMPROVED Instructable We find that this construction method gives good results (sensitivity) for measuring the bend of human joints when attached to the body. It is sensitive enough to register even slight bend and has a large enough range to still get information when the limbs are fully bent. The resistance range of this bend sensor depends a lot on the initial pressure. How to make a fabric bend sensor The following stencil is a good guide for building your first bend sensor. >> Download Fabric Bend Sensor stencil (Old) >> Download Neoprene Bend Sensor stencil (Newer) Velostat Close
Peltier Elements Generate Heat Cold Or ElectricityQuick Summary: A Peltier element is a simple tool that has no moving parts and can be used to heat or cool or generate electricity. The great versatility makes these devices quite useful for a long term survival situation. They have limitations in that they aren't very efficient and don't do a whole lot of work individually but that is countered by their simplicity. They are solid state devices which means they will last a very long time. The are flexible in that they can be used to do things such as but not limited too, charging batteries, running small electricl devices such as led's, as well as heating and cooling. You are only limited by your imagination and the number of these peltier elements that you have available. OK now a little me information on how these peltier elements work. You can use any metal but you will be wasting your time if the best metal isn't used. This is usually company proprietery information. See the figure below for how a real Peltier element is arranged.
HOW TO GET WHAT YOU WANTUse of a circular knitting machine to knit a circular stretch sensor from combinations of conductive and non-conductive yarns. In the cases of the Inox steel fiber blend yarns, the stretch sensing is due to the structure of the conductive yarn which is made up of lots of short steel fibers mixed with polyester. Even without knitting the yarn into a structure you can use it as a stretch sensor by simply pulling it taught or relaxing it. Videos Reading input from various knit stretch sensors with an arduino (using internal pull-up resistors) and a graph application written in Processing. >> Download higher quality video (262MB) Stretch sensing properties of the individual conductive yarns used in the above shown video in the knit structures. >> Download higher quality video (421MB) Conductive yarn Conductive yarn with this stretch sensing property can be hard to come by www.plugandwear.com currently sells a Nm 10/3 conductive yarn with these properties. Circular knitting machines Make your own
HOW TO GET WHAT YOU WANTWelcome to the KOBAKANT DIY Wearable Technology Documentation Tools ohmTranslator This credit-card size flex circuit translates the resistance between two probes into the resistor colour code. Sensors Wrist Flick Drum Made during PIFcamp 2017, this textile sensor detects the impact of a conductive pendulum slapping against the wristband when the wrist is twisted back and forth in a flicking action. Example Projects Sonic Insoles for Magic Shoes These Sonic Insoles demonstrate a simple way of adding pressure sensors in your shoes. Connections Wire to Conductive Fabric Connection class=imgtfe hspace=5 align=left width=240 border=0> in progress… Inspired by Vaclav’s Magic Shoe connections… Poke wires through strips of conductive fabric and soldered them to stripy protoboard. Sensors Textile Sensor Demos for Summer School These textile sensor demos were made for the Soft Circuits for Soft Bodies workshop at the eTextile Summer School 2017. Connections E-Textile Cheat Sheet Tools ohmBroach Connections Power