====== Raspberry Pi Zero W ======

https://www.raspberrypi.org/products/raspberry-pi-zero-w/

===== Raspberry Pi Zero W external antenna mod =====

  * https://www.briandorey.com/post/raspberry-pi-zero-w-external-antenna-mod

===== Basic system install =====

==== Download ====

  * https://www.raspberrypi.org/downloads/raspbian/ (RASPBIAN STRETCH LITE)

==== Flash image to SD card ====

  * https://etcher.io
  * https://rufus.akeo.ie

==== System update ====

<code>
shell# apt-get update;apt-get upgrade;apt-get dist-upgrade;apt-get clean
shell# rpi-update
</code>

===== WiFi =====

==== Scan ====

Scan Access Points

<code>
shell# iwlist wlan0 scan
</code>

==== Client ====

<code>
shell# vi /etc/wpa_supplicant/wpa_supplicant.conf
</code>

<file conf /etc/wpa_supplicant/wpa_supplicant.conf>
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
country=CZ

network={
        ssid="--ssid-name--"
        psk="--secret-password--"
}
</file>

==== AP ====

TODO
===== SSH server enable =====

<code>
shell# systemctl enable ssh
shell# systemctl start ssh
</code>
===== Camera =====

==== Enable camera ====

<code>
shell# raspi-config
</code>

  * 5 Interfacing Options  Configure connections to peripherals
  * P1 Camera      Enable/Disable connection to the Raspberry Pi Camera

==== Load kernel driver ====

<code>
shell# modprobe bcm2835-v4l2
</code>

==== Camera info ====

<code>
shell# v4l2-ctl --info
Driver Info (not using libv4l2):
        Driver name   : bm2835 mmal
        Card type     : mmal service 16.1
        Bus info      : platform:bcm2835-v4l2
        Driver version: 4.14.33
        Capabilities  : 0x85200005
                Video Capture
                Video Overlay
                Read/Write
                Streaming
                Extended Pix Format
                Device Capabilities
        Device Caps   : 0x05200005
                Video Capture
                Video Overlay
                Read/Write
                Streaming
                Extended Pix Format
</code>                

==== Motion ====

TODO

===== GPIO =====

==== Pinout ====

  * https://pinout.xyz

==== Official tutorial ====

  * https://curriculum.raspberrypi.org
  * https://projects.raspberrypi.org/en/projects/physical-computing

==== Install ====

<code>
shell# apt-get install pigpio
shell# apt-get install python3-gpiozero python3-pigpio
</code>
==== Button ====

TODO

==== OLED ====

<code>
shell# git clone https://github.com/adafruit/Adafruit_Python_SSD1306
shell# cd Adafruit_Python_SSD1306
shell# apt-get install build-essential python-dev python-pip python-imaging python-smbus
shell# python setup.py install
shell# cd examples
shell# python image.py
</code>

==== IRF520 MOSFET ====

TODO

==== I2C ====

Install tools

<code>
shell# apt-get install i2c-tools
</code>

Detect devices

<code>
shell# i2cdetect -y 1
</code>

<code>
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- 3c -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --
</code>