Axiris Arduino Panduan Perakitan - Halaman 10

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Halaman Cetak

IV-3 VFD shield for Arduino

Arduino headers

Mount

the

Arduino

headers. The headers will not

really be used to stack other

Arduino shields on top of this

shield but they help to determine

the mounting height of several

components and the IV-3 tubes.

Push the headers through the PCB

and plug them in your Arduino.

Turn upside down and solder 1-2

pins for each connector. So the

connector spacing will be correct.

Remove

the

shield

Arduino and solder the remaining

pins.

Power transistors

Mount the following transistors:

T26: BC639

•

T27: BC640

•

Do not replace these transistors

with standard types. Mount them

so that the top of their housings is

lower than the Arduino headers.

Insert IC1 ICM7555 into its socket

and

plug

the

shield

Arduino and apply power. The

voltage measured between the

cathode of D5 and the Arduino

ground should be around 32...34V

NPN transistors

Mount the BC547B transistors T1

... T13.

Mount them so that the top of

their housings stays below (or is

flush with) the Arduino headers.

stackable

from

the

into

Assembly Manual