I would like to connect 12v solenoid valve and a lcd display sheild together in arduino. please help me with to connect both solenoid and lcd display sheild together.
show us what you tried, post your sketch along with wiring set up
we didn't start anything. before starting need to know about how it can be connected . whether it is possible or not to connect .
There are examples in the IDE for driving LCD displays .
To power the solenoid valve you will need a transistor switch fed from a spare digital
Output , with a fly back diode across the solenoid valve coil .
For transistor switches , google “ using a transistor as a switch “