User Manual

2 3
2. Soldering the headers
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.
Turn the board upward again. Make sure
to align the headers so that they are
perpendicular to the board, then solder the
pins carefully.
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.
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.
4. Essential features
The design of 4x4 Key click — inputs are read
by a pair of connected 8-bit parallel-in serial-
out shift registers — allows for multiple key
presses at the same time. You can press all
16 buttons simultaneously and each will be
registered. For ease of use, each button has
silkscreen markings. The right-most column
is marked with letters A-D, the other 12
buttons are marked like a telephone keypad.
1
4x4 Key click carries a 16 button keypad
with two shift registers, allowing you to
connect a keypad to a microcontroller
without using too many I/Os. 4x4 Key click
communicates with the target board MCU
through mikroBUS
™
SPI pins (CS, SCK,
MISO, MOSI). The board is designed to use
either a 3.3V or 5V power supply.
1. Introduction
4x4 Key click manual
ver 1.00
0100000078952
4x4 Key click
click
BOARD
™
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