A couple of month ago I build Dr. Brain .
Dr. Brain is able to listen, to see and to talk.
But he is not bale to write.
So I build the amazing "Ticker Machine" for Dr. Brain and other calculating devices with
a seriell interface.
It is easy to build the parts are easy to get.
Step 1: Parts and materials
a thermo printer (this is operated by 24V and has a serial interface you can buy this on ebay)
a wooden plate or something similar
a glas dome hat fits on the plate
a box or a paper tube for the stand
some pieces of beach wood fpr the paper holder
some brass parts, screws, nuts and gears.
And don´t forget to "glue some gears on it" ;-)