I think I can safely assume that all of us at least one time in ours life listened radio. It’s a great to have “something to play in background” while we enjoy other things. Let’s turn our raspi into greatest radio you’ll ever have.
Logitech back in 2001 introduced first Squeezebox device, It just played music / radio from central server over local network. One great thing about it – it is fully open source. Unfortunately logitech discontinued the line but server and a couple of players preserved and can now be installed on multitude of devices including raspi. Thanks to Allthingpi LMS installation is now painless which we’ll see in a second.
continue on Raspberry @ Home blog…
See It: http://solarpi.tafkas.net
More Details: http://blog.tafkas.net/2014/11/19/solarpi-a-flask-powered-photovoltaic-monitor/
excerpt from the blog post…
After collecting some photovoltaic data using PikoPy and a some readings from the residential meter it was time to put everything together. The data is collected by a couple of scripts triggered by a cronjob every five minutes.
$ crontab -l
*/5 * * * * python /home/solarpi/kostal_piko.py
*/5 * * * * python /home/solarpi/collect_meter.py
*/15 * * * * python /home/solarpi/collect_weather.py
The results are then written into a SQLite database. I chose SQLite over PostgreSQL for its lighter footprint on the Raspberry Pi. And since we will have no concurrent writes SQLite should be capable serving as a database backend.
The sole purpose of the web application is to fetch data from the database and render the results. I decided to use Flask, a microframework for Python based on Werkzeug and Jinja 2. For the Frontend I used the Bootstrap based SB Admin 2 Theme.
(continue reading at link above)
Add RFID/NFC read and write to your Pi in an hour!
FYI: NFC = “near field communication”…
Near-field communication (NFC) is a set of communication protocols that enable two electronic devices, one of which is usually a portable device such as a smartphone, to establish communication by bringing them within 4 cm (1.6 in) of each other.
more on Wikipedia
View project at: Adafruit NFC/RFID on Raspberry Pi
Install the lightweight web framework Flask and set up a basic web server with different pages using Python, HTML, and CSS…
Continue on RaspberryPi.org
Learn how to access *multiple cameras* (including USB webcams and the Raspberry Pi camera module) using your Raspberry Pi, Python, and OpenCV.
Best of all, our implementation of multiple camera access with the Raspberry Pi and OpenCV is capable of running in real-time (or near real-time, depending on the number of cameras you have attached), making it perfect for creating your own multi-camera home surveillance system…
Continue at: Multiple cameras with the Raspberry Pi and OpenCV – PyImageSearch