Year: 2009

The pitch drop experiment

The pitch drop experiment

In 1927 Dr. Thomas Parnell at the University of Queensland heated a sample of petroleum pitch, also called bitumen, and poured it into a glass funnel, with a sealed neck, set in a ring stand. Three years later, in 1930, he broke the neck off the funnel and set it aside. It took eight years for the first drop of pitch to fall. The experiment has been running continuously ever since, and has produced a total of eight drops to date. The man shown in the photograph is Dr. John Mainstone, who is the experiment’s current custodian.

Valkyrie: $100 Arduino based CNC

A homemade CNC machine build using mostly off the shelve parts.The first one aka “The beast” had a lot of precision issues due to play in most parts which in turn was caused by mostly bad cutting. Also one of the biggest problems was that when I have build it I did not think to allow later adjustments to be done. So this time almost every part of it allows for some adjustments. It is also easier to build due to the different design.

RjDuino

Using a custom RjDj patch to control an Arduino. Made possible via the “netsend” and “netreceive” objects in PD, which are also usable in RjDj. The interface with the Arduino is made through the Firmata firmware in combination with the PDuino library.