Firing two solenoids together

[GeeTwo]

Originally Posted by JamesCH95

[R41] B

Spikes are the only relay modules allowed.

In this context yes, presuming that the pneumatic solenoid in turn controls an actuator. It's OK to use other relays for non-actuator items, such as lights and sensors.

Also, back to the original problem. If you can accept a momentary inequality, perhaps you could do something like:

• Open Valve 1
• Open Valve 2
• Close Valve 1
• Open Valve 1

Assuming that opens and closes each take 1 time step, (and they may very well have different time delays), at the next time step, each valve will be open and will have been open for three steps. By adding a short pause either before or after "Close Valve 1", you should be able to get them synchronized. Do the same thing in reverse at the other end of the run.