As my previous posts show, I’ve been working with an Arduino and some Nixie Tubes. Don’t get me wrong, they’re pretty cool, but they don’t come close to IN-13 Bar Graphs. Yeah, neon tube bar graphs that glow orange, don’t even try to deny the badass nature of these.

Check out the circuit I put together to test these tubes out. No Arduino required, just a power supply, a couple of resistors, some pots and a capacitor. I’d love to take credit for designing this circuit, but I borrowed it from this super helpful project: Multi-band VU Meter. Specifically, the circuit I built can be found here.

Still want more? Check out this video I took with the iSight in my Macbook.