Arduino Nixie Clock v6, Руководство по эксплуатации

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Notes:
•
C4 must go the right way round. The negative side is marked with a stripe (see hint).
•
Put Q1 so that the metal portion lines up with the white stripe on the board. The metal side faces
to the outside of the board.
•
D2 should be placed so that the white stripe on the body lines up with the white stripe on the
board.
•
Put the micro-controller socket in first. Make sure that the depression on the end of the socket
lines up with the marking on the board. When you put the chip in, the chip should go in with the
depression faces to the outside of the board.
•
C5 and C6 have “22” written on them, whereas C7 and C8 have “104” written on them (see hint)
Once all the components are on the board, hook up the power. If you hear any angry sounding buzzing
turn the power off immediately and check the orientation of C1! The circuit should run almost silently.
Be careful, we are dealing with high voltages now! If all is well, measure the voltage at the “170V” test
point. It is high voltage and the voltage may be significantly higher than 170V at the moment, because the
high voltage generator is powerful and the output is not loaded. Once you add a load, (by connecting the
tubes), the voltage should oscillate around 170V – 190V, and might have a slight “sawtooth” appearance.
You can also check the voltage using an old neon lamp if you have one. Temporarily connect the neon lamp
between the “GND” test point and the “170V” test point (turn the power off first). Turn the power on and
the neon lamp should come on.
Q1 can get warm, but should not get hot. If it gets hot, you need to check the orientation of the
components and that there are no solder bridges.
If you read a high voltage, proceed to the next step.
Hint: The 22 pF capacitor
The coding on the 22pF capactor is
simply “22”. It does not matter which way
round it goes.
Hint: Mounting the 28 pin socket
Mounting the 28 pin socket can be a little
tricky. A good trick is to fix it in place with
a small piece of tape, and the solder one
leg in place. You can hold the socket firm
while you “wet” the solder again. One leg
is usually enough to hold the socket in
place while you solder the others
22pF capacitor
Mounting 28 pin socket