0100,0100,0100 Hi ! I put the current the design on our SourceForge page. Check it out !Symbol ArialBeware, it's not tested yet. You also need the EAGLE software which you can get for free at htttp://www.cadsoft.de to print/edit circuit files and layouts. It's a modular version consisting of the analog amplifier 2-channel PCB and the digital uC PCB. Please look and suggest improvements. Especially for the Disclaimer. Have fun, MoritzSymbol ---------------------- Moritz von Buttlar moritz@v...