Water pump wiring issues

[hrstoev]

Hello! I apologize if this is the wrong category, this is the first time I am ever posting here

Basically, I am new to Arduino and my first project is a watering system for my plants. What I have in my disposal is an Arduino Uno and a water pump, which is originally used for drinkable water from a big bottle. It is battery powered and its battery can be recharged. I unplugged the battery, but it refuses to work with only Micro USB current plugged in - it flashes the charging diodes, but since there is no battery attached it's pretty much not doing anything. It also has a switch on it, which when pressed with the battery unplugged just makes the diodes flash. (when fully assembled it turns the pump on and off)

I have attached a picture of the board.

My plan is to unsolder the board completely from the pump, and connect wires directly to the + and - on the pump itself. Then I will make the Arduino run a timer and turn on the pump for X amount of time every Y amount of seconds.

This is where my questions come in:

1. Will the pump work when directly wired to the power output of the Arduino, or do I need additional power supply?

2. Do I need to use a relay with this pump?

Could you please advise me on how I can better go about this project, if you have any suggestions in mind?

Thank you very much in advance

[Railroader]

Search Forum for watering equipment. There's plenty of such projects done.

[Idahowalker]

I have a plant watering system using a ESP32. I run the motor and solenoid valve off of 5V switched with a relay by a 3.3V signal from the ESP32.

It would not be a good idea to power the motor from or through the Arduino.

You can use a relay with this project.

What are the electrical characteristics of the motor?

I put a diode across the motor/solenoid to handle inductive kickback.

[anon4567132]

Hi,
what is the voltage of the battery?

[JCA34F]

How is the battery normally charged? I doubt the 500ma from USB is enough to run the pump.