Harwin Mainheader EN 728x90 April 2025
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VFD Shield for Arduino

With several example programs

VFD Shield for Arduino
VFD Shield for Arduino
The Arduino shield presented here contains four Russian IV3(a) 7-segment VFD tubes, together with the necessary control electronics. In addition, a quartet of 3-mm LEDs provide an attractive background illumination. The shield can be combined with an Arduino Uno and there is software available to implement a clock, a voltmeter, a thermometer and a demonstration program.
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Materials

Extra info / Update

• compatible with Arduino development boards
• regulated 12-V power supply voltage, via Arduino board
• possible applications: clock, thermometer, voltmeter, counter, scoreboard, ...
• multiple Arduino example ketches available

Component list

Component List
Resistors
R1 = 510Ohm
R2,R3 = 1kOhm
R4 = 2.7kOhm
R5 = 3.9kOhm
R6–R18 = 10kOhm
R19–R30 = 68kOhm
R31–R42 = 100kOhm
R43–R54 = 220kOhm
Capacitors
C1 = 2.2nF
C2,C3 = 8.2nF
C4 = 100nF
C5–C8 = 22µF 50V, radial
C9,C10 = 100µF 50V, radial
Semiconductors
D1 = 1N4007
D2–D5 = 1N5819 Schottky diode
D6–D9 = LED, 3mm, select color
T1–T13 = BC547B
T14–T25 = BC557B
T26 = BC639
T27 = BC640
Miscellaneous
TU1–TY4 = IV3(a) 7-segment VFD tube
8-pin IC socket for IC1
Set of Arduino compatible pinheaders (1 pc 6-pin, 2 pcs 8-pin, 1 pc 10-pin)
Construction kit including 4 VFD tubes: # 150064-71 from www.elektor.com

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