I also want to use float level switches instead of the probe can you please alter the circuit and mail me so that I can creat this project the way I requested you. You can implement this motor driver circuit at your home or college using less costly components. I am currently building a swimming pool and I want a stream, small pool and waterfall to flow into the swimming pool. The level sensor probes for the overhead tank are interfaced to the port 2 of the microcontroller through transistors. I start storing water in the underground tank once it comes during designated timings on alternate days only and it takes 8-10 hrs for tank to fill completely. Now read the above description you can understand better. T in my compound with bottom at - 3ft.
At the bottom of the tank will be a submersible water pump sucking out the water. For submersible pumps, there will be 2 buttons, in which one is to start the motor and the other is to stop. Let us define two water levels- Bottom Low level and Top Up level. Kindly suggest how this circuit can be improved to have that feature. Has anyone implemented this, see the same thing and have feedback? Please provide me the circuit diagram with pcb circuit. However once the water level reaches below point B, point C and the input of N1 reverts to , output of N2 also becomes low. Konkraft is one of the leading suppliers for these devices.
Or very simple to make, a small dia tube with sealed end has two proximity switches such as Honeywell ss400 series inserted into the tube one at the bottom level, one at the top. . A small aluminium heatsink can be fitted to the 7812 for better saftey. I bought and connected all the components as mentioned above and soldered them on a breadboard. When the water level reaches the second sensor nothing happens. The very low indication led turn off the Low indication led turn on nothing else 4 Probe D - if the water touch probe The low indictor turn off.
Using transistors version The working principle As Figure 1 show automatic on off switch for water pump circuit diagram. Probe D is positioned at the bottom level of the tank while probes A, B and C are placed at full, half and medium levels of the tank respectively. Relay rating is preferred based on the load motor. In addition, your circuit can be driven by 3 or 4 volts, so , I used second hand 5 volt cell phone chargers to power them. A buzzer is not suitable for big room 2000 sqft. Because the base of both transistors not triggered from the common point.
When ever it is required start pumping, the controller makes P0. Water level controller using 8051. Latching of the relay is sullying the power through its own normally open contact for energising the relay. Sometimes, No water in Tank. Then we use the water out.
Probe arrangement diagram The probes can be arranged as shown in the diagram above. The output section consists of contactors which connect or disconnect mechanically. You can use a 555 for various things. Q2 will start the pumpamd Q1 will stop the pump. Then the output of 555 becomes high. If anyone need more support, please feel free to contact me over this form, Thanks again for the great work.
The four wires which are dipped into the tank will indicate the different water levels. Sometimes, measuring the voltage on the high line with my Fluke voltmeter trips it. Thank you mikem1907 yahoo,com , also i use an aspusb 2. Further, if the level of water in the lower tank falls below a preset low level, this circuit overrides the commands being sensed from the overhead tank and switches off the pump. Any assistance you can render would be much acknowledged. After doing the above adjustments I was able to use a longer wire 5m for the sensors and I used a bulb holder for the probes 230V pin type holder with a hole on top to avoid vacuum inside the holder I am happy to share with you that everything worked smoothly. When the water level is maximum this pin is enabled and this drives the 555 timer into astable mode.
I like the simplicity of the circuit. If the cost is very high, then part automation has to be done. I am a Senior citizen staying in Mysore. But When levels gradually reduced To the required, Then turned on fully the water. The following image shows the complete schematic. Am I explain the problem clearly-? The length of the probes wires and the supporting plastic rod must be chosen according to the depth of the tank. This pump is also protected by one of your circuits to switch off in the event the tanks get empty.
Once more thank you for your effort to make life easier for us. The water level probes are connected to the P0. The circuit diagram of the water level controller is shown below. Power supply for this circuit. This output is given to the buzzer. Hello sir i hope you are fine.