Table of Contents

1. Getting Started
   • Installation
   • Android App
   • Video Feed
2. Acknowledgements

Getting Started

To get a local copy up and running follow these steps.

Installation

Android App

You must download Android Studio at https://developer.android.com/studio

Import /AndroidApp into Android Studio and build the APK.

Video Feed

1. Install Raspberry Pi OS onto a Raspberry Pi 4
2. apt update && apt upgrade
3. Install the lastest version of Python
4. sudo apt install hostapd dnsmasq
5. sudo DEBIAN_FRONTEND=noninteractive apt install -y netfilter-persistent iptables-persistent
6. sudo systemctl unmask hostapd && sudo systemctl enable hostapd
7. sudo nano /etc/dhcpcd.conf and add the following to the bottom of the page

interface wlan0
    static ip_address=192.168.3.1/24
    nohook wpa_supplicant

8. sudo nano /etc/sysctl.d/routed-ap.conf and put the following into the conf net.ipv4.ip_forward=1
9. sudo iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
10. sudo netfilter-persistent save
11. sudo mv /etc/dnsmasq.conf /etc/dnsmasq.conf.orig then sudo nano /etc/dnsmasq.conf and add the following

interface=wlan0
dhcp-range=192.168.3.2,192.168.3.20,255.255.255.0,24h
domain=wlan
address=/gw.wlan/192.168.3.1

12. sudo rfkill unblock wlan
13. sudo nano /etc/hostapd/hostapd.conf
14. Enter information for Wi-Fi broadcast SSID

country_code=CA
interface=wlan0
ssid=HTN_Dev
hw_mode=g
channel=7
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=2
wpa_passphrase=HacktheNorth2020
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP

15. Install the required dependencies for the program in Python

• pip3 install flask
• pip3 install numpy
• pip3 install opencv-python
• pip3 install imutils

cd into the directory where you have PiStream stored, and run the command below to start stream.

python3 stream.py -i 0.0.0.0 -o 8000

Acknowledgements

This project was created by Patrick Huynh, Justin Tran, Alejandro Gomez, and Ananya Rao for the Hack the North 2020++ Hackathon.

https://www.raspberrypi.org/documentation/configuration/wireless/access-point-routed.md