Wiring diagram to power and operate the pump using an Arduino Uno R3.

Powering an Arduino board and 12v pump from the same source - Project Guidance - Arduino Forum

Led Matrix and Water pump with Relay problem - LEDs and Multiplexing - Arduino Forum

Arduino Uno R3 With L293D Motor Driver - Vayuyaan

Arduino microcontroller wiring schematics. (A,B) 5 V DC power sources

Make Multi-house Water Pump Control System using Arduino

Automatic Water Pump Controller Using Arduino : 4 Steps - Instructables

12V Water Pump Control with Arduino

How to command on and off a 5v pump directly from Arduino without a relay - Quora

Variable Power Supply Using Arduino UNO - Circuit and Source Code

DF Robot pH Meter Pro Kit V2 and Arduino with external power supply - DFRobot - Core Electronics Forum

Arduino Uno R3 Complete Guide For Beginners

Controlling pump's RPM - Motors, Mechanics, Power and CNC - Arduino Forum

How I made an Arduino cocktail machine — HackSpace magazine