Archive for the ‘RasPi’ Category

Finding daylight times in PHP

August 9, 2020 at 7:04 pm

PHP has a huge number of functions and amazingly these include calculation of sunset and sunrise times, so its easy to calculate if its currently daylight using PHP.... (more)

Creating a local domain name

May 14, 2017 at 8:08 am

When creating a new website is useful to create a local domain name for it too, so that you can use links like /css/style.css. This makes is easier... (more)

Inventex Energy Sensors

February 4, 2016 at 3:42 pm

A Raspberry Pi based data collection system to allow the remote monitoring of energy sensors.

A nicer Raspberry Pi ssh welcome message

January 10, 2016 at 8:57 pm

sudo nano /etc/motd Remove all the text and save. Now install figlet to display a nicer ascii message: sudo apt-get install figlet   sudo nano ~/.bashrc add figlet... (more)

RasPi passwordless login from Ubuntu

January 10, 2016 at 8:54 pm

ssh-keygen -t rsa -b 4096 id_rsa_pi no passphrase entered ssh-copy-id -i id_rsa_pi pi@ NB nano ~/.ssh/config to add a shortcut so we can ssh pi