nochkinI'm currently researching for the best (and cheap enough) touch sensors for the table.
My current candidates are:
1. Infrared sensors using 38KHz modulation
2. Custom capacitive sensors. I think I can do it with such low resolution (20x20), but it may involve running thin wire which I don't really like
3. Touch sensing film. It's expensive and I don't really like the idea of having something on the surface of the table
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