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Fallout 4 > General Discussions > Topic Details
DaemosDaen Jun 21, 2016 @ 6:50pm
Not gate from DLC
Not 100% sure how to use the Not Gate from contraption DLC, wondering if it'll be possible to have it so that it'll transmit power to a powered door while the switch (attached to a siren) is off, and to cut power (closing the door) while the siren is on.
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Showing 1-15 of 17 comments
DaemosDaen Jun 21, 2016 @ 7:15pm 
I've also tried the same setup using the NAND and the XoOR gates as well, they will not output.

I think they forgot something. :p
#1
DaemosDaen Jun 21, 2016 @ 7:49pm 
This should work, right?

http://steamcommunity.com/sharedfiles/filedetails/?id=708289141
#2
SuperBobKing Jun 21, 2016 @ 8:05pm 
An inverter (not gate) would do what you want, but I haven't used the logic gates yet so it is possible that they can't transmit power to something that actually consumes power, only to things that just require power without giving a number. If that won't work it might be possible to do that by keeping the door and the siren on a separate circuit from everything else and intentionally overloading it to shut off the door, but I can't remember exactly how that works. I will see if I can figure it out.
#3
mfree Jun 21, 2016 @ 8:31pm 
They're royally screwed up, because they're input-powered devices. That was a horrible, horrible mistake on Bethesda's part.

Take a NAND gate for instance. Without drawing a truth table, basically it's the inverse of AND in that unless all inputs are 1, the output is 1. If all inputs are 1 (on), then output is 0 (off).

That's all well and good, until you run into the situation where all inputs are 0... at which point, output is 0, because the switch is now depowered. *facepalm*. For that one you have to add a power feed as a permanent input.

NOT gates suffer the same problem... except there's no way to add a power feed. Solution? Stick an AND gate behind it with a power feed on the second input to buffer the NOT gate. I think. It's really effin' aggravating because these logic gates aren't only not working as defined, they aren't working as DESCRIBED in the game itself.

http://steamcommunity.com/sharedfiles/filedetails/?id=708298774

http://steamcommunity.com/sharedfiles/filedetails/?id=708298784

Was attempting in try #3 a clocked JK flip-flop with 'manually' inverted AND gates and output buffers (more AND gates). Didn't even start working, it just freaked out and hung one of the second stage AND gates active, even with the wires removed.

*pounds head on desk* All the damned things needed was a 'power' input, and they'd have worked right from the start without needing workarounds.
#4
SuperBobKing Jun 21, 2016 @ 8:33pm 
Okay, I figured it out. A logic gate won't actually transmit power unless one of it's inputs is recieving power, all it will do is trigger other logic gates (I didn't check if it could power things that only have to be connected to power without actually taking away from the power value of the generators, like lights). What this means is that since a Not gate only returns true when it's input doesn't have power, it can't power the door directly. To get around this you will need an And gate and a Not gate.

Step 1: Connect the switch to the power source.
Step 2: Connect the switch to both the siren, and the input of the Not gate.
Step 3: Connect the output of the Not gate to the input of the And gate.
Step 4: Connect the power source to the input of the And gate.
Step 5: Connect the output of the And gate to the powered door.

The order of the steps doesn't matter, I just did it like that because it makes the instructions easier to follow.

EDIT: mrfree posted while I was typing that.
Last edited by SuperBobKing; Jun 21, 2016 @ 8:35pm
#5
DaemosDaen Jun 21, 2016 @ 9:01pm 
The switch in my picture is just a bypass to make sure there was power comming into the gate through the wire connect to somthing (a pylon) outside the picture.

That switch should have nothing to do with the gate (if they programmed gates correctly) this is confirmed that power is comming in by the "Power Pylon - L... IN:1" in the second row. the pylon in the image is connected to a siren located above the gate

I have also tried to use a NAND (on unless both inputs are on) gate in this same set up. The siren is not supplying power, while the control from the main grid does, but the door still does not get power.
#6
SuperBobKing Jun 21, 2016 @ 9:05pm 
Originally posted by DaemosDaen:
The switch in my picture is just a bypass to make sure there was power comming into the gate through the wire connect to somthing (a pylon) outside the picture.

That switch should have nothing to do with the gate (if they programmed gates correctly) this is confirmed that power is comming in by the "Power Pylon - L... IN:1" in the second row. the pylon in the image is connected to a siren located above the gate

I have also tried to use a NAND (on unless both inputs are on) gate in this same set up. The siren is not supplying power, while the control from the main grid does, but the door still does not get power.
Read the steps I posted. I have already tested them and was able to get the powered door to open when the switch is off, and close when the switch is on. I didn't actually connect the siren but since all you are doing for that is connecting a switch to a generator and the siren to the switch that should work too.
#7
DaemosDaen Jun 21, 2016 @ 9:25pm 
Originally posted by SuperBobKing:
Read the steps I posted. I have already tested them and was able to get the powered door to open when the switch is off, and close when the switch is on. I didn't actually connect the siren but since all you are doing for that is connecting a switch to a generator and the siren to the switch that should work too.

If I read your post correctly, your are simply manually creating a NAND gate which the DLC NAND should produce the same results. I will set this up and see how it works.

I do agree with mfree as the gates need a power imput to seperate the gates input/output from the need for power (like the NOT gate)
#8
SuperBobKing Jun 21, 2016 @ 9:32pm 
Originally posted by DaemosDaen:
Originally posted by SuperBobKing:
Read the steps I posted. I have already tested them and was able to get the powered door to open when the switch is off, and close when the switch is on. I didn't actually connect the siren but since all you are doing for that is connecting a switch to a generator and the siren to the switch that should work too.

If I read your post correctly, your are simply manually creating a NAND gate which the DLC NAND should produce the same results. I will set this up and see how it works.

I do agree with mfree as the gates need a power imput to seperate the gates input/output from the need for power (like the NOT gate)
It isnt a nand gate. A nand gate will always return true unless both inputs are on. This will only return true when the input to the not gate is false, and the power connection to the and gate is true.
#9
SuperBobKing Jun 21, 2016 @ 9:40pm 
I just tested it, and a regular Nand gate does work. You connect the switch to the gate as one input, and connect it directly to a power source as the second input. Are you sure you have enough power to available to open the door?
#10
DaemosDaen Jun 21, 2016 @ 9:42pm 
Originally posted by SuperBobKing:
I just tested it, and a regular Nand gate does work. You connect the switch to the gate as one input, and connect it directly to a power source as the second input. Are you sure you have enough power to available to open the door?

Yes, that is the point of the switch sitting below the gate in the picture, it was a bypass to verify power, and to let the stupid brahmin out.
#11
SuperBobKing Jun 21, 2016 @ 9:44pm 
Originally posted by DaemosDaen:
Originally posted by SuperBobKing:
I just tested it, and a regular Nand gate does work. You connect the switch to the gate as one input, and connect it directly to a power source as the second input. Are you sure you have enough power to available to open the door?

Yes, that is the point of the switch sitting below the gate in the picture, it was a bypass to verify power, and to let the stupid brahmin out.
Oops, I forgot about the switch. The nand gate should work then if you connect it properly.
#12
DaemosDaen Jun 21, 2016 @ 9:57pm 
Originally posted by SuperBobKing:
Originally posted by DaemosDaen:

Yes, that is the point of the switch sitting below the gate in the picture, it was a bypass to verify power, and to let the stupid brahmin out.
Oops, I forgot about the switch. The nand gate should work then if you connect it properly.
Figured it out, it does not like the connection to the siren going through the Power Pylon before getting to the gate...... that stupid.
#13
DaemosDaen Jun 21, 2016 @ 10:46pm 
It's not just pylons either, you have to have the switch connected directly to the gate, no contuit, no nothin.
#14
Doom Nov 21, 2016 @ 1:42am 
Found this thread via google.


It goes like this: Gates snap to each other. So you're "supposed" (exxcept nobody tells you that) to have one powered gate, and snap the rest of the gates to it. Only THEN it starts working as expected. NOT gates, AND gates, everything. Basically, the orange indicator should be lit up on all of them. Apparently this is not documented anywhere, is not explained anywhere, and the info about it doesn't seem to be online anywhere, not even on reddit.

http://steamcommunity.com/sharedfiles/filedetails/?id=803754425

See the bottom gate? That's NOT gate. Input is unpowered, but orange indicator is lit properly.

Enjoy.
#15
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Fallout 4 > General Discussions > Topic Details
Date Posted: Jun 21, 2016 @ 6:50pm
Posts: 17

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