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FUTURE KITFUTURE KIT
HIGH QUALITY ELECTRONIC KITS
HIGH QUALITY ELECTRONIC KIT SET FOR HOBBY & EDUCATION
R àµ×͹½¹µ¡´éÇ LED áÅÐ àÊÕ§ RAIN ALARM WITH LED
CODE 1228SOLDERLESS STARTER KIT ªØ´¤Ô·äÁèµéͧºÑ´¡ÃÕ
Figure 2. Circuit AssemblingFigure 1.RAIN ALARM WITH LED circuit
ǧ¨Ãàµ×͹½¹µ¡´éÇÂÊÑÒ³¨Ò¡LED áÅÐàÊÕ§ ǧ¨Ã¹Õéãªéá¼è¹à«ç¹à«ÍÃì´éÒ¹ÅÒ·ͧᴧà»ç¹µÑǵÃǨ¨Ñº¹éÓ àÁ×èÍãËéá¼è¹à«ç¹à«ÍÃì é́Ò¹ÅÒ·ͧᴧÊÑÁ¼ÑʹéÓ ÊÑÒ³àµ×͹¨Ð Ñ́§¢Öé¹¾ÃéÍÁ¡Ñºä¿àµ×͹¨Ò¡ LED
¢éÍÁÙŷҧ෤¹Ô¤ -ãªéä¿àÅÕé§ 9VDC -¡Ô¹¡ÃÐáÊ¢³Ð·Ó§Ò¹ 28 mA -¢¹Ò´á¼è¹Ç§¨Ã¾ÔÁ¾ì 2 x 1.5 ¹ÔéÇ
Technical Specifications - Power Supply : 9VDC - Current Consumption : 28mA - PCB dimensions : 2 x 1.5 in.
http://www.futurekit.com
A
Figure A: Connection between 9V BATTERY SNAP CONNECTOR and PCB at 2 pins IDE terminal.After the circuit is connected completely, the circuit works.
SPEAKER8 0.25W
PCB sensorFL1008-1
NPN
BC
E
6 TRANSISTOR
BC
E
2 DIODE
5 MILA CAPACITORS
C .....F
LED
RED+BLACK-
POWER SOURCE
9V
9VSPEAKER8 0.25W
PCB sensor
RED+BLACK-
POWER SOURCE
9V
9V
ÃÙ» A: à»ç¹¡ÒÃàª×èÍÁµèÍÃÐËÇèÒ§ ¢ÑéǶèÒ¹ 9 âÇŵìà¢éҡѺἧǧ¨Ã àÁ×èÍàª×èÍÁµèÍáÅéÇãËé·´ÅͧË´¹éÓŧº¹á¼è¹à«ç¹à«ÍÃì´éÒ¹ÅÒ·ͧᴧ 俨ҡ LED ¨ÐµÔ´¢Öé¹¾ÃéÍÁ¡ÑºàÊÕ§ÊÑÒ³àµ×͹ËÒ¡àªç´¹éÓº¹á¼è¹à«ç¹à«ÍÃì´éÒ¹ÅÒ·ͧᴧÍÍ¡ 俨ҡ LED áÅÐÊÑÒ³àÊÕ§¡ç¨Ð´ÑºÅ§
This kit is a rain detector circuit, working on the water falling onto the conductive strips on the PCB, which will set off an oscillator of the transistors is to turn ON the speaker and LED. After you wiped out the water on the conductive strip's surface, the Speaker and LED are turned OFF.
Figure A: Connection between 9V BATTERY SNAP CONNECTOR and PCB at 2 pins IDE terminal.After the circuit is connected completely, the circuit works.Circuit Testing: -Dropthe water onto the conductive strips of the PCB, the circuit starts alarming and LED lights up, thecircuit is turned ON. -Wipe out the water coating on the conductive strip's surface, the circuit is turned OFF.
R .....
1 RESISTORS
LED
3 LIGHT-EMITTING DIODEKA
LED
DIAGONALCUTTER
LED
KA
+
C .....F
4
DIAGONALCUTTER
+-
+-
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