Here’s a quick tutorial on using an ultrasonic range sensor to detect nearby movement and play a sound to ‘warn’ people off!
#RaspberryPi becomes a guitar effects processor @Raspberry_Pi
A proof-of-concept using a Raspberry Pi as a guitar effects processor.
The custom pulp magazine cover generator
Totally unrelated to the Raspberry Pi, but interesting for those of you into all things retro and steampunk. This is a custom retro/pulp/sci-fi magazine cover generator. Great fun!
Proto-Plate #RaspberryPi Breakout Board
A few people at the MK Raspberry Jam were asking today about a board that plugs into the Pi’s GPIO pins that both myself and Daniel Bull are using. Well, here’s a link to an eBay lot currently selling these boards:
Proto-Plate Raspberry Pi Breakout Proto Board I2C SPI UART | eBay.
These are great boards if you want a small footprint prototyping area to solder onto. As you can see from the picture, it fits around all the ports and (see top-left of the board) comes with a plastic widget to support one corner.
CT Scanner made with Arduino
Not strictly Raspberry Pi-related, someone has made a CT scanner out of an x-ray tube bought from eBay and an Arduino. Very cool.
CT Scanner made with Arduino (from parts of eBay!) | GeekBoy.it.
Read two sensors on the same GPIO pins with the I2C bus on the #RaspberryPi @Raspberry_Pi
This great Instructable finally opens my eyes to what can be achieved using I2C. In short, it gives instructions for reading two sensors on the same GPIO pins. In other words, you wire both sensors up to the same two pins on the Pi and let the Pi access them via different addresses. The sensors are essentially “broadcasting” their data signal in two different “parts” (or addresses) of the signal, allowing you to access them separately.