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New Buttons for ScottTV

A project log for ScottTV- A Simple MediaPlayer For My Autistic Son

Hi, I needed a simple media player that my son can understand. I could not find a commercial solution, so I built one based on a raspberry

Alain MauerAlain Mauer 05/13/2019 at 08:120 Comments

The piezo buttons worked perfectly for 4 years at ScottTv, but I think, I will try capacitive touch sensor buttons. Unlike the piezo buttons, they will not react if Scott is beating on the TV, but they will just work on the touch. Now I have to check if they are not too sensitive.

I use the same sewer cover as for the piezo buttons and the touch sensors breakout boards with the tpp223 chip.

To make the touch space bigger, I cut a piece of metal out of an soda can. I clued a wire on the metal part and solderd it to the PCB.
It is realy sensitive now and I think, that I need to add some kind of shielding around the backpart of the sewer cover.

Still a little Trial and Error to do.

They work also with 3.3V, so I could leave the adapter PCB away.

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