Hello forum. I want to ask a question because I don't have enough knowledge about electricity. Obviously I don't want to do anything wrong. I am making an arduino project. I have a 6 volt water pump and I need to connect it with a relay. I used a 6V external power supply, so far so good. It is working. I want to add one more motor. Do you think it would be OK if I connect 2 6 volt motors with 4 batteries and run them with 2 relays? In short, I want to run from the same external power supply. This is exactly what I want to do. I use other sensors, I connect the relay to the breadboard, do you think it will affect them?
Yes that will work
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thanks a lot!! 
i'm relieved.
A single power supply should not be a problem. Just make sure that the power supply can deliver enough current.
I never know how to do this, but I'll look into it. thank youu
Do you have data sheets for the motors or a link to a webpage ?
I don't fully understand the question. My English is not very good. I'm sorry. But this is exactly the water pump I have;
The 4 AA batteries will work just fine.
Most AA batteries are rated at about 2850mAh and each pump draws about 200mA
If you ran both pumps continuously, then the batteries would last about 7 hours (2850/(2 x 200)).
If you ran both pumps for 1 hour each day then the batteries would last about 7 days
Frankly, the life of the batteries seemed very short after you wrote. It seems like a lot of work. I have a 12volt led that I will make with a transistor as an extra that I use in this project. Of course, I need an adapter to feed the arduino. I thought of combining them with Dişi Power Jak - Dişi Giriş Klemens Uygun Fiyatıyla Satın Al - Direnc.net® and using them with a 12v 2a adapter.I hope it won't let me down. Well, if I go and buy a 12volt water pump and combine it with this jack input and feed 3 different inputs from 1 external power, do you think I will have a problem? I don't want any damage to the Arduino. I can never think of any other solution. My goal is actually to connect everything like this to a single adapter.
led and arduino connection is as follows
I would be very happy if you could give your opinion on this matter. I will be waiting for your answer
I will use a relay again on the water pump.
thank you..
As an extra,use the Arduino's 5 volt and 3.3 volt inputs on the breadboard.
What are he part numbers?
The LED strip has 4 pins, where do the other two go?
What is that other thing with 3 pins?
Where do the relays connect?
Please use a pen and paper to draw a detailed, accurate diagram with labels on all the connections and parts. Take a photo and post it here.
The LED has 2 inputs. I have attached the photo below. Unfortunately I could not draw a symbol because I do not have much electronic knowledge. I hope you can understand me with this primitive drawing. Please do not judge me 
. Actually this is exactly what I want it to be. . One external input 3 different jobs. i'll put them together on the breadboard
I IR receiver. I will not use it
Then all is OK, except the resistor values
The resistor connected to the base of the BC547 should be 1K
The resistor connected to the MOSFET gate should be 4.7K
So I won't have any short circuit issues, right? I asked because a friend said it might be a short circuit. Frankly, I was a little scared. It looks like it will be easier than I thought. And thanks I will change the resistor values.
I don't see any shorts but if your LED strip does draw 1A then you can't connect the MOSFET using a breadboard. Breadboards can't handle 1A. You need to make the Drain connection (pin2) directly to the LED strip and the Source (pin3) connection directly to the 12V adaptor negative
If you are using a soldered protoboard, then it should be OK
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Thank you for your help. I am very grateful to you.
Hello. I decided to connect it to the relay instead of the led transistor. Do you think there will be a problem?