qprox sensors
Here's a quick and easy way to make touch sensors if you are using the Quantum chips. I used a piece of copper clad board, and used a milling bit in the drill press to mill out copper around the targets, leaving a ground plane around the targets. Holes are drilled so wires can go through to the backside, where the board with the sensor chips is. Of course the right way to do this is to etch a board with all the circuitry and sensor pads on it, but this is quick, cheap and ugly. And it's going to be hidden. You can use the back of the board, and never see the copper. (the pads don't need a direct touch- they'll even work through glass, which is what we're doing with this. ) Here's a link to Quantum:
I'm using a pair of QT104s on this.
qprox sensors
Here's a quick and easy way to make touch sensors if you are using the Quantum chips. I used a piece of copper clad board, and used a milling bit in the drill press to mill out copper around the targets, leaving a ground plane around the targets. Holes are drilled so wires can go through to the backside, where the board with the sensor chips is. Of course the right way to do this is to etch a board with all the circuitry and sensor pads on it, but this is quick, cheap and ugly. And it's going to be hidden. You can use the back of the board, and never see the copper. (the pads don't need a direct touch- they'll even work through glass, which is what we're doing with this. ) Here's a link to Quantum:
I'm using a pair of QT104s on this.