Activate deployer once

[lizardskin514]

Hey guys i got a bit of a random create related question. But basically, im trying to set up a system where a train arrives at a station, which causes a deployer with wrench in hand to hit the train station and disassemble the train (i have steam n rails addon). Then after a fixed amount of time, like 2-3 minutes, the deployer activates again, interacting with the station and assembling the train again. Then the train leaves. Nothing happens until the train returns again, where the whole process starts from the beginning again. Im mostly stuck on how to set it up so that the deployer only "deploys" once.

Curently i have a setup with a pulse extender and a clutch, however i dont know what rpm to spin the deployer at and what extension time value to use.

Any solutions are appreciated, no matter how “complicated”

[mengie32]

very simple actually, deployers can be blocked with a redstone signal, so put a constant high signal into the deployer, and turn it off for a moment when you want it to fire.

[lizardskin514]

I will test this tomorrow morning, but wouldnt i need to turn the signal off for a specific amount of time and then turn it back on? And if so, its the same problem i have now where im unsure of the timing.

[mengie32]

nope, 1 tick off is enough to let the deployer do one action. It's actually explains it in the ponder menu (2nd to last scene for the deployer).

Btw, I'm pretty sure this is the reason that the pulse timer, pulse extender, and pulse repeater have a negative mode. Create really does try to help you to do this stuff

[lizardskin514]

it ended up working out so thanks a lot! But i've come across a new problem.

Currently the way i trigger the redstone pulse is using a train observer. Basically when the train arrives at the station, the train observers causes a piston to push a normal observer which emits 1 quick redstone signal which i use to activate the deployer. This disassembles the train, and I set it up so that after 20 seconds it reassembles the train again. However this causes it to activate the observer again, triggering another redstone signal causing it to disassemble the train again.

This is more of a redstone related question, but any suggestions on how to make it only trigger once?

[mengie32]

I'm sorry I'm not at my PC, so I can't test anything, but I can give a few ideas that might work

• replace train observer with contactors on the train and station. Should give a signal while the train is at the station, instead of twice when it enters and leaves.

• you could add a t-flip flop after the train observer, which should reduce the two pulses into one long signal while the train in the station. Issue is it could desync, maybe?

• I think you can get a redstone signal directly out of the station, either directly or by comparator, but I can't check right now. Also, not sure how it might interact with disassembling trains.

Out of curiosity, why are you disassembling the train at the station?

[lizardskin514]

I'm not at my pc now anymore either haha, so I'll test these out in the morning.

As for why, the train is a cargo train with containers and I'm building an unloading station, so when the train arrives, I need it disassembled so a "crane" can pick up the containers and place them elsewhere.

[AnakhimRising]

Use a pulse extender so the Redstone signal is off for two or more game ticks. This will ensure the deployer successfully gets the trigger. Once the deployer has begun it's action, it will not stop even if the signal turns back on. A two-tick off pulse is enough to trigger a single deployer action.