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STD Automatic plant watering circuit
License: Public Domain
- 0
Description
This is a simple circuit powered by a 741opamp. The relay does the switching of the pump or adapter of the water pump. It's a 230V/12V switching relay. Here you can find the schematic and the PCB layout also.
Design Drawing
schematic diagram
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PCB
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | SIP1 | SZ1,SZ2,P1+,P2,RELAY1,RELAY2,RELAY3 | HDR1X1 | 7 |
| 2 | 33k | R1,R2 | R3 | 2 |
| 3 | 10k | RPOT | TRIM_POT_PTH | 1 |
| 4 | opamp5pEE | U1 | DIP08 | 1 |
| 5 | 1k | R3 | R3 | 1 |
| 6 | 1N4001 | D1,D2,D3 | DO35-7 | 3 |
| 7 | RELAY_RELAY | RELAY | RELAY-G5Q | 1 |
| 8 | SPST_ON | S1 | CK05 | 1 |
| 9 | BC147 | Q1 | TO-39 | 1 |
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