[need help] refueling automation

[fishoutofwater]

Hello,

so here is a picture of what I'm trying to do

basically I'm trying to use waterclock to count fuel for rocket.

atm I use hydro sensor to trigger the memory toggle, is there a way to replace the hydro sensor?I mean some automation that give active signal then go inactive by itself, like when rocket landed it give active signal then that signal go inactive.

sorry for bad explanation and bad english, I hope someone can understand.

[Nitroturtle]

If you are just doing it for the challenge, you can disregard this.  But if you're just looking for functionality, here's my much simpler solution.  The hydro sensor is used as a manual toggle to start fueling.  The clock sensor is just an emergency shut-off.  

edit:  I guess there's an answer to your original question in this as well.  If you use the NOT/AND combo seen in my screenshot, that's a positive edge detector.  It will send a momentary 'true' signal when the input switches to true.

Spoiler

 

[fishoutofwater]

9 hours ago, Nitroturtle said:

edit:  I guess there's an answer to your original question in this as well.  If you use the NOT/AND combo seen in my screenshot, that's a positive edge detector.  It will send a momentary 'true' signal when the input switches to true.

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thank you, it worked out really well for my build.

but then come another problem, there are falling debris from the sky, this is because I use weight plate as a detector for rocket's presence.

now I wish there is a sensor that gives active signal when rocket has landed.