The VFD module supports both 8-bit parallel and SPI modes of communication. The SPI protocol allows to write and read pixels so no RAM is required to buffer the display (most 128×64 SPI displays require a full 1K RAM buffer since you cannot read from the display memory). The module requires 5V, and does draw quite a bit of current, up to 500mA. There is a VFD driver and 60V boost circuit on the back. You can probably use 3.3V logic to communicate with the module, as long as it is powered with 5V
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Is that just the camera, or does it look like those filaments are a little bit too hot in the top picture? I think they’re not supposed to be hot enough to light up. Right?
Nice product by the way!
jac- just the camera/photo!
what is the refresh speed like? If it’s pretty good I’d love to use this in a motorcycle speed/tachometer project I have in mind.
Could we get a video of it’s operation?
@fireaisr – we’ll post up a video soon and/or show it off on the this week’s ask an engineer!