Nixie Clock IN-17 Instructions d'installation
IN-17 NIXIE TUBE CLOCK KIT
Assembly instruction and user manual
Bring to your home a piece of history with The Vintage Nixie Clock and its Cold War era
components. The clock will give a cosiness and a uniqueness for your house. To warm clock digits shine you want
to see permanently as to flame of fire.
2
Introduction
This parts kit intended for an electronics hobbyists that want to make a Nixie clock and do not want
go deep to complicated clock control electronics and software. This instruction step-by-step assists
you to assemble the clock.
The kit consists all necessary electronics parts (excluding Nixie tubes and power adapter) and a
microcontroller with pre-programmed an application software.
The main features of the clock
Hours, Minutes and Seconds display
12 or 24 hour operation modes
Time accuracy is provided by built-in RTC (Real Time Clock) based on extremely precise
DS3231 module with temperature compensation and backup with CR2032 battery
Programmable leading zero blanking
Date display in either DD/MM/YY or MM/DD/YY format
Alarm
Simple time setting using three buttons
Standard, crossfade and scrollback display modes
“Slot Machine” Cathode poisoning prevention routine
Programmable Blue LED tube lighting
Not AC frequency dependent –works in all countries
Auto increase of adjusting value for quick time setting
Neon colon indicators blinking at 1 Hz
Tubes are driven in high frequency dynamical indication and provide service for many years
3
Safety precautions
The clock printed circuit board (PCB) includes a High Voltage source that powers the Nixie tubes. It
output voltage can reach 180 Volts DC. The voltage generated by this source can give a potentially
LETHAL ELECTRIC SHOCK. When PCB is powered its contacts shall be not touched by hands or non-
isolated tools (non-isolated tweezers for example).
Required experience
This product is supplied as a kit of parts, intended only for suitably qualified electronic hobbyists, who
are suitably qualified and experienced in electronics assembly and electronics components proper
soldering, and are familiar with safe procedures for working with high voltage and its potentially
danger.
Assembly and testing of the clock from this kit should be attempted by competent persons only, or
under supervision of someone fully experienced in this field.
Correct component placement is critical. A few minutes spent checking placement and orientation
prior to soldering will save hours of mistakes search and rework later.
REMEMBER: A properly placed components and carefully soldered PC board will perform well for
years, a hastily assembled board will cause ongoing clock problems and failures.
The most important skill for our kit assembly is an electronic components soldering. If you have not
an experience enough, next site with Basic Soldering Guide will be useful for you:
https://learn.sparkfun.com/tutorials/how-to-solder-through-hole-soldering
Tools and materials required for assembly
Screwdriver
Angled tweezers with thin noses
Long nose pliers for tube leads bonding
Side cutting pliers to trim the excess component leads after soldering
Electronics grade solder 0.5-1mm thickness that contains cores of "flux" which helps the
molten solder to flow more easily over the joint
De-soldering wick or pump may be useful if you accidentally create solder bridges between
adjacent solder joints or improper solder any component
Soldering iron with small a “tinned” tip
Multi-meter for voltage measurements and for identifying the resistors
Magnifying glass.
4
The clock kit does not include next components
A power adapter. Output voltage 12V DC, output current ~1A. Output end plug –5.5 x 2.1mm,
centre positive. It is cheaper to buy such power adapter in your local electronics shop because
it will be equipped by necessary grid plug. You may have similar power adapter in your house
also because such type power adapters are popular and widely use.
6 pcs Nixie tubes. The kit consists electronics components necessary for a clock assembly only.
Nixie tubes need to purchase separately.
5
Parts list
Component designation
Component description
RESISTORS
R1
470kΩ, 0.25W
R2
1kΩ, 0.25W
R3
3.3kΩ, 0.25W
R4
0.51Ω, 0.5W
R5, R6, R7, R8, R9, R10, R11, R15, R18, R19
10kΩ, 0.25W
R20
220Ω, 0.25W
R12, R14
330Ω, 0.25W
R16, R17
680kΩ, 0.25W
6
CAPACITORS
C1
2.2uF, 250V, Electrolytic
C2, C3, C5, C6
0.1uF, Ceramic
C4
2.2nF, Ceramic
C7
220uF, 25V, Electrolytic
TRANSISTORS
Q1
BC557
Q2
IRF840, MOSFET
Q3, Q5
BC547
Q4
MPSA42
OK1-OK6
EL817, Optocoupler
DIODES
D1
1N4004
D2
1N914
D3
UF4004
D4-D9
LED, 3mm
INTEGRATED CIRCUITS
U1
LM7805
U2
MC34063
U3
K155ID1
U4
ATMEGA328P-PU
U5
DS3231
MISCELLANEOUS
PCB
Nixie Clock PCB
BAT_1
CR2032 Battery socket
Battery
3V CR2032
DB1, DB2
Neon bulb
FUSE
0.5A
L1
330uH, 1A Inductor
N1 - N6
IN-16 Nixie tube
S1 - S3
Buttons
U3 Socket
16pin socket
U4 Socket
28pin socket
Power socket
5.5mm x 2.1mm
Speaker
Active alarm buzzer
PCB Spacers (10mm)
4 PCB spacers
Screws
4 Screws 3mm
7
Components review
Resistors
1kΩ (R2)
10kΩ (R5, R6, R7, R8, R9,
R10, R11, R15, R18, R19)
470kΩ (R1)
0.51Ω (R4)
3.3kΩ (R3)
330Ω (R12, R14)
680kΩ (R16, R17)
220Ω(R20)
The resistors used in the kit are marked with four coloured bands to identify the value. Bands 1 and 2
identify the first two digits, band 3 is the Multiplier and band 4 is the tolerance.
NOTES:
Components actual view can differ due to different manufacturers.
If an inscription or color bar coding of the component is small, it is necessary to use the
magnifying glass.
8
The first, second and third coloured bands on the resistors indicate the resistance using a colour code.
This table indicates how to convert each colour to its numerical equivalent. Gold band means 5%
tolerance.
To read a resistor code, first locate the gold band and read the colours in order from the other end.
(All resistors in this kit have a gold band indicating 5% tolerance.) The first two bands indicate digits in
the resistance; the third band (called the multiplier) indicates the number of zeroes to be added to
the digits to obtain the resistance. However, it is sometimes unclear in which direction the bands
should be read. Therefore, we recommend that the resistors will be identified with a multimeter.
Use the resistor code to identify and sort all of the resistors. One good way to keep them sorted is to
tape one end to a piece of paper and write the resistance and component number (R1, R2, etc.). Once
you have identified and sorted all of the resistors, you are ready to solder them to the PCB. To
prepare a resistor for insertion into the board, bend the two leads so that they form a right angle to
the resistor body.
Capacitors
0.1uF (Code 104), (C2, C3, C5, C6)
2.2nF (Code 222), (C4)
220uF 25V, (C7)
2.2uF 250V, (C1)
Band colour
Numerical
equivalent
Band colour
Numerical
equivalent
black
0
green
5
brown
1
blue
6
red
2
violet
7
orange
3
grey
8
yellow
4
white
9
9
Transistors
BC547, (Q3, Q5)
BC557, (Q1)
MPSA42, (Q4)
IRF840, MOSFET, (Q2)
EL817, (OK1-OK6)
10
Diodes
1N4004 (D1)
UF4004 (D3)
1N914 (D2)
LED, 3mm (D4-D9)
Table des matières
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