I have very minimal experience with Arduino and I was wondering how I would be able to connect a 12 VDC solenoid valve with a 12 VDC relay to an Arduino board? I want it to only have 1 power source. Is this possible and how and what would I have to do to be able to power every single thing with one power source?
Post links to the valve and the relay. There is a risc that You might need a transistor to operate the relay coil. If so, get an N channel logic MOSFET and controll the valve directly. Don't forget the kick back diode.
If that relay has a 12V coil, you will need a transistor of sorts (NPN or n-channel MOSFET) to drive that relay coil. If it operates at 5V, you can't power it off the Arduino's 5V pin or your regulator will overheat, and you would still need a transistor to control the relay.
In either case, replace the relay with an n-channel logic level MOSFET, such as the IRL540 or IRLZ44N, to name just two of the many options out there.
Hi,
The relay does not need to be 12V (That's the voltage to operate the relay). It can be more typically 5V. Some links:
There are many kinds of things you can control with arduino. Some links:
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