Reading Flash and EPROM chips and visualizing their contents

This post can be seen as a follow up to my recent post[1] adressing the G540 universal programmer. The reason why I bought this programmer was that I have collected many old memory chips. I was always curious what kind of interesting data they might contain. A EPROM reader was needed and since my urge to build an Arduino shield for that purpose lapsed soon after sourcing some MCP23S17[2] SPI port expander chips.  So I bought the G540 I mentioned before.  Continue reading Reading Flash and EPROM chips and visualizing their contents


  1. My first impression of the Genius G540 universal programmer 
  2. Microchip product page of the MCP23S17 

Genius G540 EPROM programmer: what’s inside and initial startup

Buying a G540 programmer

I have been collecting old EPROM chips for many years. Now I was curious what data these hold exactly. I am not looking for program data but more for character maps, hidden “Easter eggs” . Something like this Hack a day[1] post.

So I went to ebay an bought one of this widespread available “Genius G540[2]” EPROM programmers. Continue reading Genius G540 EPROM programmer: what’s inside and initial startup


  1. Hack a day on hidden photographs in old Mac ROM chips  
  2. G540 programmer on ebay 

High Frequency device (Hochfrequenz-Gerät)

A few years ago I bought this interesting piece of medical equipment history. It is an induction coil with interchangeable gas filled glass electrodes. It was used “treat” all kinds of medical conditions. The handbook shows a large variety of uses this device could be used on, against and for. There are electrodes for your hair, eyeballs, vaginal electrodes and many even weirder ones. All the electrodes from the handbook are pictured at the end of the video.
I think it is a medical quack.
Nevertheless it is fun to show this thing at parties an zap people whit it.

I have the handbook scanned somewhere and will add it to this post any time soon. In the meantime here is a video of me presenting this thing.

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 

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