Eye traking for disable people in Portugal

Hi!

I recently came across with an amazing tool: "OptiKey" ! Maybe some of you already know this, but for those that don't the Optikey is an assistive on-screen keyboard designed to be used with a low cost eye-tracking device to bring keyboard control, mouse control and speech to people with motor and speech limitations, such as people living with Amyotrophic Lateral Sclerosis (ALS) / Motor Neuron Disease (MND). It's fully open-source and free, however the material needed for the implementation has some costs (camara and tablet). That's where you came in. My ideia is to apply this to those in need in a larger scale, but first i want to test it in 2 children, expecting that the results make me win a contest that will expand this nationally. For so, i need to buy 2 camaras. The value of the camara available in the market (low cost one) is 159EUR ($149).
I will do the rest my self, just really need some Money to have the key material to start this. It's a fundamental tool for these kids as they can be able to comunicate, search and learn.
So what do you say? Will you help me?
To know more about OptiKey: https://github.com/OptiKey/OptiKey/wiki