This tube clock digital is made up of four IV-17 alphanumeric VFD tubes. As it ships, the electronics come in two parts – the base with the microcontroller and the shield with the VFD tubes. The base can support up to four sixteen-segment tubes or twenty seven-segment displays.
It ships with an ISP header for easy software upgrades. If you want to make your own four-letter word machine or to experiment with VFD tubes, this is a great place to start.
I received this device fully assembled but it normally ships as a kit. Nearing the menu structure is pretty easy and there is a manual online to make setting the device easier.
An FLW modification is in development to support this feature. Overall – I’m a fan of this little device.