David Johnson-Davies, as is his custom this time of 12 months, designed a fairly fascinating “silver greenback” puzzle sport utilizing the ATtiny84A. On this sport, 12 LEDs signify the place of 5 silver greenback cash, lit up in a spaced-out line. Gamers transfer every coin to the best by a number of areas till all of them are stacked up within the rightmost positions, and may thus not transfer. The thing is to make motion in a approach that the opposite participant – or pc on this case – is caught in a “no transfer” state of affairs.

Every coin is chosen utilizing a five-button interface, hitting the button a number of occasions as wanted to point the quantity strikes to the best. Somewhat speaker bleeps again for those who attempt to make an unlawful transfer – resembling inserting one coin on high of one other. A “GO” button then lets the pc take its flip. In case you win by trapping the pc in a no-move state of affairs, the speaker performs a tune to congratulate you.

The sport setup is manufactured as a small PCB, with area for the LEDs, buttons, a speaker, and even somewhat curving deal with. Energy is offered by a pair of AA batteries, which match properly on the underside through a little bit of double-sided self-adhesive foam.

The venture writeup explains the sport’s code in some element, although DJD overlooked the half about how this system chooses the perfect transfer – and how one can at all times beat it–to be able to keep away from spoiling the enjoyable. He plans to launch this info in a separate put up in 2024. However, the PCB recordsdata and code can be found there, so you may in all probability determine it out now for those who had been so inclined/impatient!