FUTABA-VFD-8-MD-06INKM Driver

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A modern Arduino/PlatformIO driver for the Futaba 8-MD-06INKM VFD display (SPI interface)

Features

• Easy-to-use C++ class: FutabaVFD
• Supports up to 16 digits (configurable)
• Adjustable brightness (0~240)
• Custom character (5x7 dot matrix) support
• Standby (power-saving) mode
• Full SPI hardware support (mode 3, LSB first)
• Example and test code included

Getting Started

1. Hardware

• Connect the VFD display to your MCU's SPI bus (see datasheet for pinout)
• Set the CS (chip select) pin in your code (default: 10)

2. Usage Example

#include <Arduino.h>
#include <SPI.h>
#include "FutabaVFD.h"

#define VFD_CS_PIN 10
FutabaVFD vfd(VFD_CS_PIN, &SPI);

void setup() {
	vfd.setDigit(8);
	vfd.setBrightness(120);
	vfd.displayOn();
	vfd.showString(0, "HELLO123");
}

void loop() {
	// Count up demo
	static int count = 0;
	char buf[9];
	snprintf(buf, sizeof(buf), "%8d", count++);
	vfd.showString(0, buf);
	delay(500);
}

More examples can be found in lib/FutabaVFD/examples/.

API Overview

Method	Description
setDigit(uint8_t digit)	Set number of display digits (1~16)
setBrightness(uint8_t brightness)	Set brightness (0~240)
showCharacter(uint8_t pos, char c)	Show a character at position
showString(uint8_t pos, const char* str)	Show a string from position
writeCustomPattern(uint8_t addr, const uint8_t pattern[5])	Write a custom 5x7 pattern
showCustomPattern(uint8_t pos, uint8_t addr)	Show a custom pattern at position
displayOn() / displayOff()	Turn display on/off
setStandbyMode(bool standby)	Enter/exit standby mode