Motor ON/OFF Trigger to Arduino

Hello,

I am a beginner at using Arduino.

I wish to do a very simple project.

If a user turns ON a water motor pump, it should give a trigger to my Arduino UNO.

Arduino will note the Motor ON time and date.

If a user turns OFF a water motor pump, it should again give a trigger to my Arduino UNO.

Arduino will note the Motor OFF time and date.

Please help me how can I detect motor ON/OFF and save the data using Arduino.

You need a data logger. Google Arduino data logger for examples.

Mike.

Pommie said:

You need a data logger. Google Arduino data logger for examples.

Mike.

Click to expand...

Thank you for the reply Mike.
Can you please guide me on how to give the trigger to the Arduino when the motor is switched ON or OFF.

How is the motor powered?

Mike.

The safest way is if the motors switch has a spare Pole that you can connect to the Arduino which keeps the circuits isolated from each other.

To record the time and date you need a DS1307 or the better DS3231 Real Time Clock module, both have extra EEprom memory on board to record the events if you use up all your Ardunio EEprom.

You can use your UNO to :

1) Measure a V from pump switch to create trigger. Use an opto coupler
to isolate pump switch voltage from UNO.

2) Use a shaft disk and optocoupler to count pulses (RPM) to create trigger.

3) Use a optical flow sensor.

4) use a pump switch with additional contacts UNO can generate its own trigger from.

5) Use a pump centrifugal switch on shaft to UNO.

If you need a separate processor to develop the trigger could use an ATTINY85 and
mBlock to do the counting/Vmeasure/sensor interface, here is example sensing V -




You drag and drop functional blocks out of window 2 to window 3, config, and mBlock
will generate the Arduino code to program an attiny85 (an 8 pin AVR processor). Use the
UNO to program the ATTINY then revert the UNO back to its "normal" code. or just use
USB and appropriate driver to do the programming.

Regards, Dana.

An alternate is to use an ESP8266, that would allow you to do application
over a network, and to obtain time / date from network. Use TUNIOT to do the
programming, here is an example of ease to create even complex application,
using TUNIOT -


Regards, Dana.

Pommie said:

How is the motor powered?

Mike.

Click to expand...

It is powered using a AC 3 phase supply

Nikhil_M said:

It is powered using a AC 3 phase supply

Click to expand...

Assuming 440VAC 3 phase (as in UK) is the neutral available? If so you could wire a 230V relay between one of the phases and neutral? The relay is then just like a switch and there are lots of examples of reading a switch with Arduino.

Mike.