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Arduino Solenoid Valve Circuit: How to control water flow with an Arduino

How to use a solenoid valve with an Arduino In this video we show how to do flow control with an Arduino. This is great for gardening, plumbing, and industrial applications. We look at some of the design issues when using a solenoid valve such as Back EMF and the need for a relay. We go over Ohm’s law for an inductor and show how to solve the Back EMF issue with a Flyback Diode (aka Freewheeling Diode or Snubber Diode). After reviewing the solenoid equation, we hook up and test the circuit – and successfully control water with the Arduino and solenoid valve. Where you can buy the tools and materials: [✓] Wire Nuts http://amzn.to/2z8hMHD [✓] Diode Variety Pack http://amzn.to/2hIKeZz [✓] 12V DC ¾” NPT Solenoid Valve (BE SURE TO SELECT THE RIGHT ONE!) http://amzn.to/2z9hpg3 [✓] Jumper wires http://amzn.to/2zpiT5E [✓] 12V DC Power Supply http://amzn.to/2zbKp6O [✓] Arduino Uno http://amzn.to/2zqDqXE [✓] Relay Module – see this video’s description for all the pieces to use the relay module:    • How to use an Arduino Relay Module   Helpful Links 1. The video on how to use the Arduino relay module    • How to use an Arduino Relay Module   2. More about flyback diodes https://www.quora.com/What-are-flywhe... 3. Using a transistor instead of a relay http://www.bc-robotics.com/tutorials/... 4. More on solenoid valve circuits http://web.cecs.pdx.edu/~eas199/B/how...