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 ((Introduction to Urban Cricket (German) (youtube) )) ((Introduction to Urban Cricket (English) (youtube))). The idea comes from Reinhard Gupfinger ((Reinhard Gupfingers website)) 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 ((Sound tossing website )) ((Sound tossing Facebook page)). Until early 2013 on was in a tree at the Schwedenplatz in Vienna ((A Urban Cricket in the wild)).

Continue reading Urban Cricket