How the TouchScreen Works ??
Before going further in the project, I have to explain how the project works. To measure how far away the hand is, I have already told you that we are using the capacitance effect. In order to involve it, we have to build a grid. The vertical wires are the transmitter wires (the ones which have the signal). The horizontal wires are the receiver wires (the ones which get a singal thanks to the capacitance effect). The receiver wires are actually the ones which will measure how far is the hand from the table.( in order to have a capacitance effect, there is absolutely no contact between the receiver wires and the transmitter wires ) The measurement points are the intersection between the receiver and the transmitter wires thus for a 8 per 8 matrix of wires, we have got 64 measurement points.
