Our client was an individual with multiple sclerosis, an autoimmune disease that targets the covering on the axons of neurons, damaging connections to the brain and spinal cord. Our client uses a wheelchair as a form of mobilization around the room. For assistance purposes, it is necessary to have some sort of system for the resident to be able to contact the physician. The system we have developed can use either buttons or voice activation to initiate the call. This allows for flexibility so that patients with different impairments are able to use the system with ease.
Projects from Make: Magazine
Call-Aid
A nurse-call system that provides the choice between buttons and voice activation.
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Steps
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Step #1:
- Map out the electric flow of the system from the wall to the button.
- This system supplies a constant power source and uses a pushbutton switch to close the circuit to the wall, activating the nurse call.
- Record the type of connector at the wall.
- Wall: 1/4" female mono jack
- Using a multimeter, measure the voltage coming from the wall (~12V in this case).