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Category: Ankle Foot Orthoses

Micro-Switch

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"DO IT YOURSELF" ENTRY --- PURPOSE: To enable individuals with severe physical disabilities to operate switch-connected devices. To make this switch, use diagonal wire cutters cut the prongs and some of the rim from the lid of the Bubble Tape gum box to prevent it from closing completely. With a soldering iron burn a small hole in the rear side of the container. Run the stripped ends of the phono plug wire through the hole into the gum box. Hot glue the Styrofoam to the inside center of the bottom part of gum box. Solder one end of the stripped cable wire to the "C" (common terminal) on the roller lever switch. Solder the other end of cable to the "NO" (Normally open) terminal on the roller lever switch. Carefully push the switch into the Styrofoam inside the gum box. Place a bead of hot glue around the switch, securing it to the Styrofoam. Also fill cable hole with some hot glue to stabilize the cable. Hot glue the two pieces of foam on each side of the switch. The length of foam will determine the sensitivity of the switch. Use duct tape to fasten the gum box lid closed, while adjusting it to the sensitivity desired by the user. MATERIALS: One round Bubble Tape gum dispenser; one 1/8-inch phono plug cable with stripped ends; one SPDT roller lever switch; one 1x 1.5 inch piece of half-inch Styrofoam; two 1 x 1 2 inch pieces of half-inch thick foam padding; duct tape. TOOLS: Solder and soldering iron, diagonal cutters, and hot glue and glue gun. SKILLS REQUIRED: Electronics. TITLE: Micro-Switch. WEB SITE: TechConnect, Illinois Assistive Technology Project at http://www.iltech.org . REF: Ten Dollar Tech Ideas. TechConnect, Illinois Assistive Technology Project, can also be contacted at 1 West Old State Capitol Plaza, Suite 100, Springfield, Illinois 62701; 800-852-5110 voice/TTY, IL only; 217-522-7985 voice; 217-522-9966 TTY; 217-522-8067 Fax.

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as of: 
09/15/2004