mikroElektronika TouchKey click Manual

TouchKey click
1. Introduction
TouchKey click has four capacitive pads
powered by TTP224, a touchpad detector IC.
The board outputs an interrupt singnal for
each pad: OUTA, OUTB, OUTC and OUTD (in
place of default mikroBUS RST, AN, PWM
™
and INT pins, respectivelly, respectively).
TouchKey click is designed to work either
with a 3.3V or 5V power supply.
2. Soldering the headers
Before using your click board ™ , make sure
to solder 1x8 male headers to both left and
right side of the board. Two 1x8 male headers
are included with the board in the package.
2
Turn the board upside down so that
the bottom side is facing you upwards.
Place shorter pins of the header into the
appropriate soldering pads.
1
3
Turn the board upward again. Make sure
to align the headers so that they are
perpendicular to the board, then solder the
pins carefully.
3. Plugging the board in
Once you have soldered the headers your
board is ready to be placed into the desired
mikroBUS socket. Make sure to align the
™
cut in the lower-right part of the board with
the markings on the silkscreen at the
mikroBUS socket. If all the
™
pins are aligned correctly,
push the board all the way
into the socket.
4. Essential features
TouchKey click offers a replacement
for standard mechanical switches and
buttons. It can be used in a wide variety of
applications and under diverse conditions,
but perhaps the most interesting feature is
that the keys can be toggled even through a
layer of glass, paper, or similar non-isolating
materials. The response time is just 100mS
at fast mode and 200mS at low power mode.
click
BOARD
™
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TouchKey click manual
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