Advertisement
Mounting and start-up
Mount the circuit on a board whose design is shown
in Figure 3. Photographs will be also helpful when
mounting. All components are mounted on a single-
sided printed circuit board with size 40 x 62 mm. Start
mounting the circuit from soldering resistors and
other small-size components and end up with screw
connectors and insertion of the US1 integrated circuit
into the socket. Once the circuit is mounted, you need
very carefully check that the components have not
been soldered in the wrong direction or at the wrong
locations and that no short-circuits of the soldering
points have occurred during soldering. A mistake at
this stage of the mounting work can result in damage
to components or even explosion.
Fig. 3.
List of components
Resistors:
R1, R2:..................1 kΩ
R3: .........................1 MΩ
R4, R5:..................100 kΩ (brown-black-yellow-gold)
PR1:.......................mounting potentiometer 1 MΩ (105)
PH1: ......................photoreistor
Capacitors:
C1: .........................470 μF !
C2, C3:..................100 nF (may be designated 104)
C4: .........................100 μF !
Semiconductors:
D1, D2:.................1N4007 !
LD1:.......................any LED !
US1: ......................ATtiny25 + socket !
US2: ......................LM2931 !
T1: .........................BUZ11 (or similar) !
Other:
F1:..........................fuse 2 A
X1, X2:..................screw connectors
Alarm siren 12 V
(brown-black-red-gold)
(brown-black-green-gold)
Circuit flawlessly assembled from functioning
components will work straight away.
Figure 4 shows the correct way to connect the siren
and power supply to the board. If the scare will be
exposed to direct weather conditions, it can be built
into the optional Z-54 enclosure to which the PCB is
fitted. Photograph 2 shows the board housed in the
aforementioned enclosure. When using the AC
adapter to power the scare, it must also be protected
from rain and moisture to prevent possible damage
or electrocution to the user.
Photo 2
C1
C4
LD1
C
A
!
Start mounting from soldering the
components onto the board in order of
size from smallest to largest. When
mounting components marked with an
exclamation mark, pay attention to their polarity.
Photographs of the mounted kit may be helpful.
To access the high-resolution images as links,
download the PDF.
D1
US2
D2
C
A
US1
T1
1
PDF
DOWNLOAD
3
Advertisement
