The idea
Control your hydroponics green house using a Raspberry PI via the Browser using NodeJS, Socket.IO and pi-gpio, MongoDB.
USE AT YOUR OWN RISK wrong wires connections can cause damage to your RaspberryPI.
# Arm vs x86
In order to develop there a flag for arm vs x86
To run into RaspberryPI manually add the following dependencies to package.json (if not present):
"node-dht-sensor": "0.0.8",
"i2c": "https://github.com/polaris/node-i2c"
# Working in progress
Add support for:
nodejs modules:
* node-dht-sensor (GPIO17)
* pi-gpio ( fans,lights management)
* bh1750 ( light sensor
* ds18x20 ( sensor of type /sys/bus/w1/devices/28-00000xxxxxxx)
* 2 channel relay(GPIO27,GPIO22)
# Requirements
## Install Raspbian Jessie
`wget https://downloads.raspberrypi.org/raspbian_latest`
unzip the archive then:
`sudo dd bs=4M if=2015-09-24-raspbian-jessie.img of=/dev/sdb`
## Preliminary setup ##
after boot change password:
`passwd`
check connectivity:
`ping 8.8.8.8`
update and upgrade:
`sudo apt-get update`
`sudo apt-get upgrade`
## Install Additional Packages ##
`sudo apt-get install -y build-essential python-dev python-smbus i2c-tools`
##I2C SETUP
Installing Kernel Support (with Raspi-Config)
`raspi-config -> advanced -> enable i2c`
`sudo vi /etc/modules`
add these two lines to the end of the file:
`i2c-bcm2708`
`i2c-dev`
`sudo vi /etc/modprobe.d/raspi-blacklist.conf`
add these two lines to the end of the file:
`#blacklist spi-bcm2708`
`#blacklist i2c-bcm2708`
`sudo vi /boot/config.txt`
add these two lines to the end of the file:
`dtparam=i2c1=on`
`dtparam=i2c_arm=on`
`sudo reboot`
check i2c installation:
`sudo i2cdetect -y 1`
` 0 1 2 3 4 5 6 7 8 9 a b c d e f`
`00: -- -- -- -- -- -- -- -- -- -- -- -- -- `
`10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- `
`20: -- -- -- 23 -- -- -- -- -- -- -- -- -- -- -- -- `
`30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- `
`40: 40 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- `
`50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- `
`60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --`
`70: 70 -- -- -- -- -- -- --`
other diag commands:
`lsmod | grep i2c_`
`dmesg | grep i2c`
`sudo i2cdump -y 1 0x40`
`i2cdetect -F 0x40`
##Install WiringPI
`git clone git://git.drogon.net/wiringPi`
`cd wiringPi`
`./build`
## Install OneWire support
`sudo vi /boot/config.txt`
add:
`dtoverlay=w1-gpio`
then:
`sudo reboot`
`sudo modprobe -v w1_gpio`
`sudo modprobe w1-gpio`
`sudo modprobe w1-therm`
`cat /sys/bus/w1/devices/w1_bus_master1/28-xxxx/w1_slave`
`5f 01 4b 46 7f ff 01 x0 9x : crc=9b YES`
`5f 01 4b 46 7f ff 01 x0 9x t=21937`
## Install TL-WN725N V2 Driver
@see <https://www.raspberrypi.org/forums/viewtopic.php?p=462982>
@see <https://www.raspberrypi.org/documentation/configuration/wireless/wireless-cli.md>
@see <http://omarriott.com/aux/raspberry-pi-wifi/>
`wget https://dl.dropboxusercontent.com/u/80256631/install-8188eu.tgz`
`tar xvzf install-8188eu.tgz`
`chmod 755 install-8188eu.sh`
`sudo ./install-8188eu.sh`
`sudo cat /etc/network/interfaces`
add:
`allow-hotplug wlan0`
`iface wlan0 inet manual`
`wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf`
## Wifi setup
To scan for WiFi networks, use the command:
`sudo iwlist wlan0 scan`
add a generated encrypted password:
`sudo wpa_passphrase WIRELESS_SID password`
to /etc/wpa_supplicant/wpa_supplicant.conf:
`network={`
`ssid="WIRELESS_SID"`
`#psk="password"`
`psk=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx`
`}`
`sudo ifdown wlan0`
`sudo ifup wlan0`
#Install mongoDB
`sudo apt-get install mongodb-server`
#Install hydra database
###drop
`mongo hydra --eval "db.dropDatabase()"`
or
`mongo`
`> show databases;`
`> use hydra;`
`> db.dropDatabase();`
`> exit;`
###dump
`mongodump -d hydra`
###import
`mongorestore -d hydra ./db`
#Install node.js
`curl -sLS https://apt.adafruit.com/add | sudo bash`
`sudo apt-get install node`
`pi@raspberrypi ~ $ node -v`
`v4.2.1`
##NODEJS I2C
@see <https://github.com/kelly/node-i2c/issues/69>
change from: "i2c": "0.2.0"
to : "i2c": "https://github.com/polaris/node-i2c"
`npm install polaris/node-i2c`
# GPIO ADMIN
Install GPIO Admin, to allow users other than root to access the GPIO:
@see <https://github.com/quick2wire/quick2wire-gpio-admin>
@see <http://www.robert-drummond.com/2013/06/06/raspberry-pi-gpio-inputoutput-in-javascript/>
`gpio-admin export 22`
gpio-admin: failed to change group ownership of /sys/devices/virtual/gpio/gpio22/direction: No such file or directory
@see https://github.com/nickfloyd/raspberry-beacons
Open and modify the gpio-admin.c file:
Change this:
`int size = snprintf(path, PATH_MAX, "/sys/devices/virtual/gpio/gpio%u/%s", pin, filename);`
To this:
`int size = snprintf(path, PATH_MAX, "/sys/class/gpio/gpio%u/%s", pin, filename);`
`make`
`sudo make install`
# BCM2835
@see <http://www.airspayce.com/mikem/bcm2835/>
`wget http://www.airspayce.com/mikem/bcm2835/bcm2835-1.46.tar.gz`
`tar zxvf bcm2835-1.46.tar.gz`
`cd bcm2835-1.46/`
`./configure`
`make`
`sudo make check`
`sudo make install`
## Configuration ##
To configure some parameters of the application change `utils/config.js`
ds18x20 sensors serials are hardcoded in index.js
## Start application ##
To start the application, issue:
`./start.sh`
`./stop.sh`
`tail -f hydra.log`
Navigate to your Raspberry PI IP and port to view the application https://ip:4443/login
# Increase swap space
Apply only if you are building mongodb from source:
`/etc/dphys-swapfile`
The content is very simple. By default my Raspbian has 100MB of swap:
`CONF_SWAPSIZE=100`
If you want to change the size, you need to modify the number and restart dphys-swapfile:
`/etc/init.d/dphys-swapfile stop`
`/etc/init.d/dphys-swapfile start`
## Developer notes ##
index.js - Provides a basic NodeJS module. See documentation for details.
start.sh - Provides a basic shell script to run the application in background.
start.sh - Provides a basic shell script to gracefully stop the nodejs application.
# Updates
Added support for https.
var options = {
key: fs.readFileSync('file.pem'),
cert: fs.readFileSync('file.crt')
};
Where /path/to/file.pem is the path to a file containing an RSA key, generated (for example) by:
`openssl genrsa 1024 > /path/to/file.pem`
and /path/to/file.crt is the path to a file containing an SSL certificate, generated (for example) by:
`openssl req -new -key /path/to/file.pem -out csr.pem`
`openssl x509 -req -days 365 -in csr.pem -signkey /path/to/file.pem -out /path/to/file.crt`
Generate the privatekey.pem and certificate.pem files using the following commands:
`openssl genrsa -out privatekey.pem 1024`
`openssl req -new -key privatekey.pem -out certrequest.csr`
`openssl x509 -req -in certrequest.csr -signkey privatekey.pem -out certificate.pem`
Added react-camera support.
# Build
npm install --loglevel verbose
# Sandbox
Only contains experimental code..