Rain Detector
Friday, 16 October 2009 17:52 | Written by EEE-LAB | 
| Science - Science Project |
This circuit diagram is very easy to make a project. Its a very interesting project.
|
Part |
Total Qty. |
Description |
Substitutions |
|
R1 |
1 |
1K 1/4 W Resistor |
|
|
R2 |
1 |
680 Ohm 1/4 W Resistor |
|
|
D1 |
1 |
1N4001 Silicon Diode |
|
|
BZ1 |
1 |
12V Buzzer |
|
|
S1 |
1 |
SPST Switch |
|
|
SCR1 |
1 |
C106B1 SCR |
106CY |
|
SENSOR |
1 |
See Notes |
|
|
MISC |
1 |
Board, Wire, Case, PC Board (For Sensor) |
- The sensor is a small piece of PC board etched to the pattern showen in the schematic. The traces should be very close to each other, but never touching. A large spiral pattern would also work.
- Make sure to use a loud buzzer.
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Last Updated (Tuesday, 12 January 2010 14:14)