The above may look like a Nixie tube, but it’s a Numitron: the Nixie’s lower-voltage friend, and part of [pinomelean’s] single-digit Numitron clock. If you’re unfamiliar with Numitrons ...

reacting to commands from his remote control. Of course this can be done without the chip swap as the PIC 16F684 that comes with it can be reprogrammed in place. But [Marco] didn’t have a PICkit ...