My calculator has these black lines (under all the buttons) that are very close but not touching in wavy designs right on the PCB. How do these buttons work? Is there a way I hook up a SMT push button to this?
Like I mentioned before, both my calculators have these black traces. Is this a covering over the copper? How would I get to the actual copper? Do I try to sand off the black?
Bio:¿Qué tal? I'm 16 and enjoy learning about electronics. I am self-taught. I love programming my Arduino and soldering circuits. My newest hobby is to make RC planes. I've spent many fun (and mad :) hou...read more »