Want to build something using VFD tubes, but don’t need yet another clock project? In that case, this wall mounted temperature and humidity display created by [commanderkull] might be exactly what you’re looking for. With six IV-11 tubes, this display is a practical way to add some of that gorgeous blue-green glow to your home or office.
The USB powered display uses a XL6009 and an XL7015 to provide the 24 V and 1.8 V needed by the IV-11 tubes, respectively. Both of which can be disconnected with jumpers to shut down the tubes without powering off the entire device, a useful feature when programming and debugging the display’s ATmega328P microcontroller. Each tube is connected to the ATmega with an 74HC595 shift register and a UDN2981 driver. Temperature and humidity data is provided, perhaps unsurprisingly, by the exceptionally common DHT22 sensor.
If you are looking to build another clock with these style tubes, there’s certainly enough prior art out there to get you started. We’ve also seen faux VFDs that you could use for either project, just in case you aren’t looking to deal with the voltage requirements and relative rarity of the real thing.
5 thoughts on “A VFD Wall Thermometer”
What the hell, you could design another PCB to hold those tubes in a neat way instead of bending their wires.
IKR? Should’ve done this: http://library.hairballaudio.com/images/2014/08/elements36.jpg
Philistine! Have you no appreciation for the art of the curved wires?
We have these things called tube sockets…How that is safe is beyond me. Can this site start promoting basic safety?
You worried about safety principles for 24V? Why even comment on something you clearly don’t know anything about.
Please be kind and respectful to help make the comments section excellent. (Comment Policy)