mikroElektronika WiFi3 click User manual

2 3
WiFi3 click™manual
ver. 1.00
0100000070468
click™
BOARD
www.mikroe.com
2. Soldering the headers
1. Introduction
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
WiFi3 click™is ideally suited for IoT
applications. The System on Chip ooads
all the networking functions from the
MCU. You can integrate it with sensors and
actuators through its GPIOs and connect
your things to the internet with minimum
development eort. In place of standard
mikroBUS™AN and RST pins, WiFi3 click™has
PWD and G15 pins. These correspond to CH_
PD and GPIO15 pins on the module. When
you connect WiFi3 click™to the mikroBUS™
socket, set the PWD pin to VCC and the G15
pin to GND, from within your code.
1
WiFi3 click™is a complete self-contained
WiFi solution carrying the ESP8266MOD
module with a system on chip. The module
has an integrated TCP/IP stack, supports
Wi-Fi Direct (p2p) and boasts powerful
processing and storage capabilities.
Alongside a standard mikroBUS™socket,
with WiFi3 click™you’ll have additional 6
GPIO pins at your disposal. WiFi3 click™
communicates with the target board
microcontroller through mikroBUS™RX, TX,
AN (PWD) and RST (G15) lines. The board
uses a 3.3V power supply only.
WiFi3 click™

MikroElektronika assumes no responsibility or liability for any errors or inaccuracies that may appear in the present document.
Specification and information contained in the present schematic are subject to change at any time without notice. Copyright © 2014 MikroElektronika. All rights reserved.
5. WiFi3 click™board schematic
8. Support
7. Code examples
MikroElektronika oers free tech support
(www.mikroe.com/support) until the end
of the product’s lifetime, so if something
goes wrong, we’re ready and willing to help!
Once you have done all the necessary
preparations, it’s time to get your click™board
up and running. We have provided examples
for mikroC™, mikroBasic™and mikroPascal™
compilers on our Libstock website. Just
download them and you are ready to start.
WiFi3 click™features a PCB trace antenna,
designed for the 2400–2483.5 MHz fre-
quency band.
6. PCB antenna
.com
AN
RST
CS
SCK
MOSI
MISO
+3.3V
GND
PWM
INT
RX
TX
SCL
SDA
+5V
GND
MIKROBUS DEVICE CONN.
VCC
VCC
GND
R2
4K7
VCC
R3
4K7
GND
15
14
13
12
11
10
9 8 7 6
5
4
3
2
1
16 17 18 19 20
Wi Fi
ESP8266MOD
GND
GND
GND
GND
WIFI_ANT
3.3V CH_PD GPIO0
GPIO2
GPIO15
GPIO14
GPIO12
GPIO13
GPIO16
UTXD
GND GND GND GND
URXD
M1
GPIO16
GPIO13
GPIO12
GPIO14
GPIO0
GPIO2
GPIO12
GPIO13
GPIO2
GPIO0
GPIO14
GPIO16
LD1
R1
2K2
VCC
GND
GNDGND
1
2
ANT1
PCB ANT
GND
1
2
3
4
5
6
7
HD1