One of the problems with a classic Turing machine is the tape must be infinitely long. [Mark’s] Turing Ring still doesn’t have an infinite tape, but it does make it circular to save space. That along ...

The Arduino platform lies somewhere between Technic Lego and the low level geek world of circuit building. It consists of two parts; the hardware and the software, and with these you can build almost ...

[beshur]’s 2-year-old is obsessed with transportation, so he lifted a few DUPLO blocks from the bin and made this toy traffic light as a birthday present. Hey, might as well get him used to the ...