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Senor to turn on a relay

I want to be able to be notified when my reservoir is empty. I want to be able to have a relay turn on when the water is at the point where the water is at a certain level. Also to stop the pump from running. This is the sensor that I want to use.

Dimensions3.82 x 2.8 x 0.83 inches; 1.16 OuncesItem Weight1.16 ouncesManufacturerCQRobotASINB07ZMGW3QJItem model numberCQRSENYW002. Is on Amazon. If you can explain how to set it up it would be great Thank you

Thanks in advance.

4 answers1 reply

5 Comments

c.l.teker101

Dec 01, 2020

hydrosys4

Dec 01, 2020

Hello,

I like more the mechanical sensor in the picture :).

Anyway the setting should be different for the Normally closed or Normally open sensor, let me know how this sensor works.

Below the setting to stop the pump and keep it disabled until the sensor is closed.

For the Light, I removed the activation feature because I want to rewrite some part of the SW. Maybe I'll add in the next release.

First of all, we need to create an interrupt object to associate with the PIN of the raspberry. Let's assume that the PIN is the GPIO18, one side of the sensor is connected to the GPIO18 and the other side to the ground. We want an interrupt to be generated every time the GPIO18 is connected to ground.

Go to "hardwaresetting" page, "edit" the table, in the add row, add the following:

(some fields that are not relevant are hidden)

After the row is added do not forget to click "confirm and Save button".

Now you can go to the "interrupt" page.

Below the configuration to set for the pump relay tab:

NOTE: the pump will be blocked immediately when the sensor is ON. It will be unlocked within 1 minute after the sensor is OFF.

Let me know if it works.

cheers,

Angelo

hydrosys4

Dec 01, 2020

Replying to

From the picture, the sensor is ON when the water above the level and OFF when below the level, so it is inverted.

For this case you just need to change the above configuration, in the "Activation Mode" filed, select the "second edge + Level (inv)".

c.l.teker101

Nov 30, 2020

Good Day Angelo, I decided to use just a float switch. Did some more research on that senor.Not some good reviews. So what I would like to do is the following. When the water goes too low I would like a relay to turn on a light. Also I would like the pump to not work until I put water in the container. The pump is what waters the plants. I am sure it is simple, but I want to do it correct.

Thank you

Skip

hydrosys4

Nov 23, 2020

Hi There,

Never tested that sensor, seems like a sensor that activates in contact with the water. It should be ok anyway.

regarding the mail notification, there is a post here :

https://hydrosys4.wixsite.com/hydrosys4forum/forum/hardware-discussion/binary-sensor/p-1/dl-5fb0025d4d4b6400172fcd6e?postId=5fac4b14d56e880017f4d159&origin=notification&commentId=5fb0025d4d4b6400172fcd6e

For the Water pump, it is not clear, is this the pump that pumps the water inside the tank of outside the tank? the system can be programmed in the way that if the level switch gives signal, it can activate the pump for a number of seconds. If this is the case I'll send you the configuration.

Regards,

Angelo