- Thu Aug 04, 2005 3:14 pm
#6462
Has anybody tried the Q-Prox touch switches? They have chips designed to make a keypad as well as sliders and rotary spinners.
These look pretty cool....place a circuit board pattern behind the plastic panel of an enclosure, and you can have a keypad or slider any shape you want. I have one of their 4-button demo boards and it works great I put an eighth-inch thick piece of plastic over the circuit board patterns with a piece of double-backed tape and it reliably detected every "press" of the four buttons.
I'm curious how picky the circuit is with the capacitance values in the sense lines, or other fiddly bits are required in the circuit board arrangement.
These parts look like a good solution where a keypad is desired in a sealed enclosure - just stick the PCB to the inside surface.
http://www.qprox.com/
Thanks for any comments,
Jon
These look pretty cool....place a circuit board pattern behind the plastic panel of an enclosure, and you can have a keypad or slider any shape you want. I have one of their 4-button demo boards and it works great I put an eighth-inch thick piece of plastic over the circuit board patterns with a piece of double-backed tape and it reliably detected every "press" of the four buttons.
I'm curious how picky the circuit is with the capacitance values in the sense lines, or other fiddly bits are required in the circuit board arrangement.
These parts look like a good solution where a keypad is desired in a sealed enclosure - just stick the PCB to the inside surface.
http://www.qprox.com/
Thanks for any comments,
Jon
Jon