Plug the RFID module into the breadboard with enough space around it. Connect the VCC pin to the Arduino's 3.3V (not 5V), and ...

There are plenty of SPI interface screens on the market, but few of them have the charm of the good old Nixie tube. [Tony] decided to whip up a simple three-Nixie module that could be addressed ...

The SPI interface leaves most of the GPIO pins ... an exciting way to output information in projects. Compared to the LCD module we've talked about, the biggest benefits of this e-paper display ...