foil capability switch
Using a function switch or an auxiliary switch, people can control their environment, play with toys, use a computer or communicate.
Various switches available commercially
Switch to work in oral pressure, fingers, muscle twitching, pulling, pushing, etc.
The problem is that special needs are-by definition -special.
You don\'t have to work in this area for a long time before you meet customers whose existing products are unable to meet your needs.
The foil switch allows quick custom switch access.
It allows prototyping capabilities that are not available in commercial products.
The therapist can be fast (in the field)
Many different sites are evaluated for switch access and experiments in various motion ranges.
This also means that the therapist can customize the switch
Tailored for individuals.
Users can become switches.
The foil switch is activated with a very light touch, which is great for customers with low muscle tension.
It\'s cheap too-
The price of the switch is about $1 (
Some commercial switches cost under a few hundred dollars, but most are under $100. .
It follows the method of \"making at once, using many --
Once the harness is made, it can be reused over and over again and customized instantly by changing the shape of the aluminum foil.
Over the years, it has proven itself to be a very versatile tool and we have used it with many customers, including adults and children.
When we worked with a little boy with muscle atrophy in the spinal cord, we developed this switch (SMA).
The only action he can do is move a finger about 3-5 mm.
He has little muscle.
He usually lies beside him and helps him breathe with a ventilator.
We tried all our commercial switches (
But he can\'t use any of them.
Membrane switch (
Very light pressure required)
Because he can\'t generate enough pressure to use them, he can\'t use them.
Some of the other switches, such as the broken beam switch, work fine, but get in the way of his breathing as they fall on his ribs (
He has no muscle control in the ribs)
Therefore, they cannot be used due to the difficulty of installing them and the interference to his breathing.
He was able to easily use the aluminum foil switch to turn the toy on and off.
It was very light, activated under bare pressure, shaped it in his chest, did not damage breathing, and failed in the previous evaluation of the $600 switch
Scissors for tools and materials or soldering iron for blades (
You can use electronic tape, but it will be weaker)Heat gun (hot air gun)
Or very hot hair cutting material crocodile clip leads.
Longer length is better.
Make a switch for each clip lead.
Radio Shack: 278-001 $6. 99 / 4BGMicro.
56/10 male head 1/8 \"to male head 1/8\" mono cable.
One cable can make two switches. AllElectronics. com : CB-3510 $1.
Radio House: 42-502420 $4. 99 Solder (e. g 60/40 0.
Pine fat with diameter 062-core)
Heat Shrink tube with diameter of 1/8 (
Electrical tape (
Optional if welding is not used)Heavy-
Tariff aluminum foil (grocery store)
Solid foam liner (
Spray glue (
Hardware store optional)
This step can be customized in many ways.
These instructions are intended to make a very versatile mat, but this can be adjusted according to individual needs. In some cases (as seen later)
This step is not even needed.
In this case, I made a square template of 5 \"with cardboard.
I used it to cut a matching shape from the foam shelf liner.
Cut a piece of aluminum foil about 2 \"in both directions, larger than the shelf liner.
Spray Aluminum foil with glue on one side only.
Place the foam shelf liner in the middle of the foil.
Wrap the sticky foil around the edge.
When bending at 90 °, the aluminum foil can be pointed (
That\'s why the corners are round).
In this case, the foam shelf liner provides three functions: 1)
As a non
Anti-slip backing so it is easier to keep in one place 2)
It helps the foil pad to fit the shape 3)
It provides additional strength and support that was originally lacking.
Cut the clip lead in half.
Peel 1/4 \"of insulation from each cutting end.
Screw the internal wires together.
Cut the audio cable in half.
One audio cable makes two switches, so ignore half unless you do two.
Peel off 1 \"insulating material from the cutting end.
Twist loose wires together to make a large wire (
Peel 1/4 \"off the inner wire and screw the inner wire together.
If you are using a stereo cable instead of a mono cable, you will have two internal cables.
Use a multimeter to determine which is the ring, tip, and barrel conductor.
The circular conductor and barrel conductor can be twisted together to make a mono cable.
Hot slide 1
Shrink the pipe on each clip lead and push it up.
Hot slide 2
Shrink the pipe through the audio cable and push up.
Weld the clip lead to the tip wire.
Weld another clip lead to the barrel conductor.
Push the Heat Shrink tube on the clip lead to the exposed solder joint.
Shrink the pipe using a heat gun and lock it in place.
This can prevent electrical short circuit and increase stability.
You can also wrap the joint with tape.
Push the Heat Shrink tube on the audio cable onto the shrink package of the clip lead.
Heat with a hot air gun and lock in place.
You should have an audio cable split into two crocodile clip leads.
I call this a harness.
Clip a crocodile lead onto the base to make sure it comes in contact with the aluminum foil.
Clip the other lead to the aluminum foil strip wrapped around the user\'s finger.
Plug the audio end into the switch-adapted device.
When the user touches two pieces of foil together, the switch is off.
When the user separates the two again, the switch is on.
Switching should be a means to the activity, not the activity itself.
Nevertheless, for some children, they first need an extra power to interact with the switch.
This is an example of an incentive switch, \"car switch \".
It took me five full minutes and there were four and a half people waiting for the hot glue gun to get hot.
Cut two pieces of cardboard (3\"x5\" or so).
Wrap each piece with foil.
Put a hot glue in the middle of a piece.
Cut a piece of foam smaller than cardboard.
Press it in the foam.
Cover the top of the foam with hot glue.
Press another piece of cardboard on it.
Imagine this is a sandwich.
Foam is meat, glue is condiment, foil-
Bread is wrapped in cardboard. Hot-
Stick the car to the cardboard.
Connect a clip lead to the top of the cardboard.
Connect another clip lead to the bottom.
The switch shakes when the child presses the car, the foil touches and the circuit turns off.
When the child releases, the foam pushes the foil away and the switch is on.
This is useful for someone who can open/close a fist but has difficulty with other moves.
We took a glove for our customers.
He seems to use two middle fingers at the same time. We hot-
Stick a piece of foil to the palm of your hand (
When the customer wore glovesvery important). We hot-
Stick another piece of foil around these two fingers and bend the foil so it forms a striker.
A clip lead is attached to each foil.
In order to turn off the switch, the customer touched the two middle fingers to his palm ,(like Spider-
Men\'s web shooting gameem-horns\").
The relaxing hand will automatically disconnect the circuit.
For this, take a CD box, a small piece of packaging foam and two pieces of aluminum foil.
Stick the foam in the middle of the CD box.
This will separate the sides when not in use, keeping the circuit open.
The size, shape and position of the foam determine how easy this switch is to turn off.
Stick a piece of foil to the top edge.
Repeat at the bottom edge.
Make sure these parts do not normally come into contact, but they do so if pressure is applied to the CD housing.
Attach the clip lead to each piece of foil.
Press the CD chassis to turn off the circuit.
Put the CD box out and open it again.
We work with six people.
A month old with joint disease
She can\'t move her arm, but she can move her leg.
We did a few things for her so she could play with the adapted toys.
First, we made a mat.
As in the main structure).
Next, we covered one of her little shoes with hot glue and then covered it with foil.
One clip is placed on the mat and the other on the shoes.
She can activate the toy with a kick plate.
We also brought her soft socks/baby boots and sewed a circle edge of velcro on the socks. We hot-
Stick the hook side of velcro on a piece of aluminum foil that has been folded several times.
This makes it possible for a variety of adjustments and allows us to try many different configurations.