IoT, computer technology and other things
Not hobby, real stuff

Proudly made by myself
Welcome, my name is Giovanni, a 35 years old italian engineer that would like share his experience in IoT, electronic, raspberry, arduino, electrotechnic, and others things. In this blog i will try to realize a different approch to these stuff. It’s not a hobby or a toys…. I will try to explain my practical, pragmatical and REAL approch for building REAL, SAFE, and RELIABLE utilities.
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1.01 Initially setup your RaspberryPI

So, buy a RaspberryPI download RASPBIAN STRETCH LITE here (it’s minimal image, only cli, no visual), and write on a SD. I use Win32DiskImager, you can download here. When you have wrote the SD, insert it into a windows computer, and create a file into /boot/ path. Named this file “ssh” without extension. This thing allow you to use ssh from the begin. Insert the SD into raspberry and attach power supply. Now we see my default configuration…. packages installed, configuration files ecc. Update your raspberry with the utility raspi-config. Update your timezone, change the host name and change your password. 

Put pi in the sudoers PI user in our cases must be like root. For this purpose the user pi will be in sudoers file, without password. 

sudo nano /etc/sudoers 
#adding this line at the end 

Install Apache2 and Php7. 0-cli 
For making stable interface (maybe in http) and in the future a web-app for controlling stove and other feature we install apache2 and php7. 0…. 
Also php7. 0-cli for making script. 

sudo apt install apache2 php -y 
sudo chmod -R 777 /var/www/html 

the last command is for making the wwwroot accessible also for pi user. Now, we have to change configuration of apache and php for display eventualy errors. Open the php.ini and modify a line. 

sudo nano /etc/php/7.0/apache2/php.ini 

# search the line with display_errors= 
# and set display_errors=On 
sudo cp /etc/php/7.0/apache2/php.ini /etc/php/7.0/cli/php.ini 
sudo service apache2 restart

Install WiringPI for access GPIO 
Install the beautiful WiringPI library (here is the original guide) 

sudo apt-get update 
sudo apt-get purge wiringpi hash -r 
sudo apt-get install git-core 
cd git clone git:// ;
cd ~/wiringPi git pull origin 
cd ~/wiringPi ./build

Install sshpass for future use 
In future posts We will use ssh and the utility sshpass for an automatic reverse tunneling and controls gpio remotly… You trust me. 

sudo apt-get install sshpass 

Set static IP to your Raspberry 
Modify this file 
sudo nano /etc/dhcpcd.conf 

Now reboot, please. 

 Ok, Raspberry is ready 
Now we have a raspberry ready for control relais and temperature sensor (one little setup for the DS18B20 in the next post). We have also apache2 and php for making some API and some cli-script. And olso GCC…. for making C++ and C software that is just installed by default.