Latest Projects

Testing Grove IR Temperature Sensor

Need to measure the temperature in the oven. Check this out.

Testing Grove IR Temperature Sensor – 22 Aug 18

Playing whirly tubes with Jason and Amy – 4Aug18

What are whirly tubes?

There are experimental musical instrument or perhaps a toy which consists of a corrugated (ribbed) plastic tube or hose (hollow flexible cylinder), open at both ends and possibly wider at one end (bell), the thinner of which is rotated in a circle to play.

These tubes are:

  • 74cm in length
  • produce musical overtones in 5ths
  • a frequency ratio of 3/2

How to make these work:

  • Hold one end in your hand.
  • Twirl the other end in a circle.
  • Listen to the sound made by the tube.
  • Vary the speed of the tube.

Notice that the pitch of the whirly jumps from one note to another and increases as the speed of the twirling is increased.

That is, high speed twirling creates high pitch notes

I am have these as sound samples from Sonicculture’s Box of Tricks and these feed into Ableton Live to be played as a MIDI instrument using a keyboard.

See more projects like this under “Music Projects”


Photo taken on November 26, 2015 at 09:55AM

New photo available via
I use technology like this is develop the construction and learning skills with Jason and seniors.
The technology is called LittleBits Electronics and it like playing with Lego. On the above photo are colour coded LittleBits blocks. The central one is an Arduino Computer with inputs on the left and outputs on the right. It is a very simple demo where the dimmer on the left is sensed by the Arduino computer and delivers to the bar LED array on the right a pattern corresponding to the value on the dimmer. This modules just clip together using magnets and it is very easy to use. See my projects under ozBerry or projects with Jason for more.

Learning about technology to improve society