arduino - Where to put the Flyback Diode in a Relay Module? - Electrical Engineering Stack Exchange

I'm working with a relay module to switch a solenoid with an Arduino, Im having problems because the arduino get some noise in an LCD but I'm not sure where to put the diode, there is 3 pins, In, V

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arduino - Where to put the Flyback Diode in a Relay Module? - Electrical Engineering Stack Exchange

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