Tag Archives: electronics


Disclaimer: This posting is a work in progress. I’ve mode this some years ago and was asked to provide some documentation:

I have parts of a SAIA PCDII that I wanted to make use out of. The ourput boards have 6 relais each and 8 of them are connected to a backplane connector. This makes 48 mains voltage (low current) switchable channels.
Confusing what I mean? Have a look at this video

I’ve found some of the pictures I took while working on this and just a few days ago I found the box with the hardware itself.

For now the old pictures.

One of the output modules
I desoldered the ICs to work out the schematic
detailed picture of the output board sans ICs
Eight output boards in the extension case


Unfortunately I just this one picture of the pin out.

out of focus and confusing pin out – sorry


Arduino sketch


  • redraw schematic
  • Figure out connector type
  • sketch pinout of PCD2.A220 board
  • sketch pinout backplane
  • comment ino file

Urban Cricket

altered assembly without pcb

Project description

Urban Cricket is a small circuit that imitates the call of a cricket, only being powered by a small solar cell[1][2]. The idea comes from Reinhard Gupfinger[3] a Linz based artist I met during the Ars Electronica Festival 2011 in Linz. This circuit here is a altered version of his original circuit. He distributes this little sound bugs all over the world[4][5]. Until early 2013 on was in a tree at the Schwedenplatz in Vienna[6].

Continue reading Urban Cricket

  1. Introduction to Urban Cricket (German) (youtube)  
  2. Introduction to Urban Cricket (English) (youtube) 
  3. Reinhard Gupfingers website 
  4. Sound tossing website  
  5. Sound tossing Facebook page 
  6. A Urban Cricket in the wild