I am loving the DIY gadget aesthetics of these FernSprecher voice-memo machines made from old telephone handsets by Karl Schatzmann of Brooklyn. FernSprecher, one of the German words for telephone, literally means “remote speaker.” One button records a message, the other plays it back. [Thanks, Karl!]
I can’t find anywhere where it says what chip was used but one I know you can use is the HK828: http://www.jaycar.com.au/images_uploaded/zz-8200.pdf
I used one to make an ‘A Team’ music box once.
Cool device, and probably not that much difficult to reproduce, unfortunately I can find no schematics…..
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