DIY Water Level Monitoring Circuit is good for tank or reservoir, it use IC 555 timer in astable mode and make repeated signal, hence, when water reaches a set level then buzzer turns ON.
Also, the circuit helps to stop water overflow and is useful in home, factory and farm.
Circuit Working:
Parts List:
| Components | Quantity |
|---|---|
| Resistors (All resistors are 1/4 watt unless specified) | |
| 1k | 1 |
| 100k | 1 |
| Capacitors | |
| Electrolytic 2.2µF 25V | 1 |
| Semiconductors | |
| IC 555 Timer | 1 |
| Buzzer 3V | 1 |
| Battery 3V | 1 |
| Probes Insulated Copper Wires | 2 |
To begin with , here, the circuit works with 3V and uses IC 555 in astable mode., then two copper probes A and B act as water sensor.
When water touches both probes then the circuit is complete and then 555 IC make signal and buzzer gives alarm.
After that, we place probes at the desired water level in the tank and when water touches the probes, it connects them and allows current to flow between A and B.
R1, R2 and C1 set 555 timing and signal speed and then IC 555 give fast ON/OFF at pin 3 and buzzer sound an alarm.
Alarm work while water touches the probes and when water goes down then there is no connection and alarm stop.
Formulas with Calculations:
This DIY Water Level Circuit with simple calculations appears below, also the circuit operates in astable mode, and we calculate its frequency using the formula:”
Frequency (f):
f = 1.44 / ((R1 + 2R2) × C1)
where,
- R1 is 1kΩ
- R2 is 100kΩ
- C1 is 2.2µF
How to Build:
To build a DIY Water Level Monitoring Circuit follow below steps for connection:
- First, gather all the parts as shown in circuit diagram
- Next, pin 1 of IC1 connects to GND
- Then pin 2 connect to pin 6
- Also, pin 3 goes to one side of buzzer and other side of buzzer connects to +3V
- Now pin 4 and pin 8 connects to +3V
- Further, C1 positive connects to pin 2 and C1 negative connects to GND
- After that, R2 connects to between in 6 and pin 7
- Then R1 one side goes to pin 7 and other side goes to probe B and probe A goes to +3V
- Finally, battery positive goes to circuit positive and Battery negative connects to GND
Conclusion:
To conclude, this DIY Water Level Monitoring Circuit is cheap and smart project, it uses IC 555 in astable mode to make square wave.
When water touches the probes the buzzer makes sound.
Hence, the circuit is good for home, farm or at factory use and it is with low power and easy to build.
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