Before the anode of Vacuum Fluorescent Display a thin, coated with oxide filament emits the thermal electrons when voltage is applied to the anode segments. The plates are on the edge soldered or glued together, the intermediate display system is in a high vacuum. Vacuum fluorescent display has a transparent glass panel and a rear base plate, which is usually also made ?of glass. Previously we published an article on Calculators, the older calculators used same Vacuum Fluorescent Display. If you are wondering what is this Vacuum Fluorescent Display is – it is those bright colorful typical display on your Car’s Stereo or Music System. Vacuum Fluorescent Display is based on lighting of certain materials. not megahertz-fast but acceptable 39 40 41 42 43 44 45 // data for my displays (a video cassette recorder, an audiophoolery CD reader and a compact stereo).Vacuum Fluorescent Display or VFD is very commonly used Display on Consumer Electronics Segment and Car Dashboard. the circuit proposedĢ3 * doesn't have an onboard memory, so the segment setup must be "scanned" continuosly, every grid, 100 times per secondĢ4 *, from the Arduino segments array, this translates also on the so-called "overhaed" CPU work, that, for you to know, it'sĢ5 * no more than regular use of a micro at the end, it may hit around 3% of CPU work in terms of occupied time, you can also tryĢ6 * to use the regular SPI tools of Arduino but it needs an indepth analisys of the outtake and procedureĢ8 * this code works with whatever 8 bit Arduino, also 3.3V should work ok, maybe reduce the SCK frequency, considering the CD4094 areĢ9 * powered along it and may "undervolt" (yes, exactly the overclock principles to fry your beloved PC)ģ0 */ 31 32 33 34 35#define ledLed 13 // it's the led pin that leds a led on to led you know that a led on means some led related stuff (scientist mumbojumbo of course) 36 37#define strobePin 4 // the Arduino pin to dedicate to the "strobe" line 38#define strobeHold 10 // microseconds // holding time to switch the optocoupler. ġ7*/ 18 19 20 21 /* this code uses resources from the Arduino in a "behind the curtains" way, the timer1 and SPI modules are both used and busyĢ2 *, so you may have big problems using SPI, SPI pins, and some functionalities based upon timer1. See theġ3 GNU General Public License for more details.ġ4 15 You should have received a copy of the GNU General Public Licenseġ6 along with this program. 2 Versatile VFD Display Hrdware Interface Arduino ProgramĤ 5 This program is free software: you can redistribute it and/or modifyĦ it under the terms of the GNU General Public License as published byħ the Free Software Foundation, either version 3 of the License, orĩ 10 This program is distributed in the hope that it will be useful,ġ1 but WITHOUT ANY WARRANTY without even the implied warranty ofġ2 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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