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

+-

+-