One Nixies Digit driven by I2C or UART. Hardware is ready for SPI too.
Nixie tube IN-12B: 0-9 with pointNixie tube IN-19A IN-19B IN-19V: S/F/H/V/T/A/Ω/Hz/K/M/P/m/μ/n/%/°C/Π/AB/~/</–/>/+/dB
