Board Layout - Arduino nixie v41 Operating Instructions Manual

Board layout

For reference, the board layout is as shown (viewed from the top):
The connections are:
Connector
POWER External power should be applied to the board with this connector.
Any DC input source is possible, from 7.5V – 12V. Higher voltages
may be possible, but could cause the digits to flicker if the voltage is
too high, and you might have to provide a heat sink for the the
MOSFET and voltage regulator.
The absolute maximum input voltage is 24V. Any higher voltage
than this will damage the board within a few seconds!
The input VIN is protected against the input being connected
reversed.
The input current ranges from 300mA to 1A depending on the size
of the tubes and the number of LEDs you are driving.
GND: The negative side of the input supply
VIN: The positive side of the input supply
VCC: Output of regulated 5V
HV OUT: Output of high voltage for driving external neons etc.
Description Values