Thanks, I have been wanting to make my own for a while but knew that someone in the community would figure out a clean solution first. Been using yours and it is great, and clean. A lot of others I've gone through have been overly complicated. Any plans to include logic to allow for mixed size trains on the same network? Maybe just suffixing the source and destination names with the train car count, then updating the interrupt to go to [*]Source2car, [*]Source4car. FYI the link is not in the description of this video.

Awesome updates. Your previous video motivated me to reverse engineer the design (using your BPs only when needed). I also added some elements -- support for station limits >1, light indicators to show item levels for sender and status for receiving. Overall spent way too much time on it, really addicting. Probably about 200hrs into SA and only been to Nauvis and Volcanus lol. Really wish there were better ways to update items within blueprints without impacting parameters and better ways of updating placed blueprints in the world -- some sort of synchronization where any changes are applied to all previous placed identical BPs or at least not requiring deconstruct beforehand

Do we still need change the blueprint (parameters) when is downloaded? And also is any chance to add to book or video with little bit futher between each unit? Somehow I messing the wires all the times with 2a 😂 Is any chance to change the priotiser limit? With 1supply and 7 demand stations and 1 train, somethimes train want to fill one station to full and not pick other one what was empty (low stock) during the filling the first one. It is issue probably due my wires😢 Btw your system is easiest what I found on YT. 🎉 congrats, good work 👍

:) GJ I will be using this its so clean made

The first comment after 8 years

Great work! I can't get the demand station to work however, unless I manually set the variables once created. When I put down the blueprint, the "0" parameter is not replaced by the commodity and stays a parameter. On the arithmetic combinator, it uses 2147483647 as input constant (instead of -1600). Once I change those manually after creating, the dedicated trains go pick up and deliver the stuff, but the flex trains are just sitting there (while there's demand). Any ideas?

Cool setup. I copied what you did into a creative world to try it out. works great. Question: On the item demand station, there are 2 decider combinators, and 2 constant combinators. One constant sets the count to negative. What does the other one do?

Does this system not address quality? Is it impossible to supply waste material with mixed quality?

Don't you consider using different Supply stations name patterns for Fluids and Items as a good enough solution for enabling both Item & Fluid Flex trains on the same logic network? Those trains could have different pickup interrupts, and different station names per cargo type would ensure trains won't get confused.

Why not use radar instead of red wire netting, to transmit the signals

I've been making my own version of something similar though I had an issue which I couldn't figure out how to fix without using circuits. Lets say I have 3 flex trains, 1 producer with a train limit of 3 and a requester with train limit of 1. When the requester starts requesting all of the trains get dispatched at the same time to service just one request. This means that only one train eventually ends up fulfilling the request and the other two load up at the producer and then return to the depot.

Nice Block , nice Rails .

Running into an issue where the dedicated train is constantly refueling and cycling through 2s of inactivity over and over and over. Any idea what the issue could be?

Idk If there is a way to Sort / trains If you have another Circuit / 2 So like use parameter 9 and 8 ? as just dummys and sort Fluid from Item? as you circuit < Parameter 9 , circuit < parameter 8 is this elegan i have no idea But im trying something with this cursed technique

Can you make a version using radars instead of circuit network. Also with green belts?

I solved this a different way, but I was left unable to get the extra 2 pressure plates at the end

Your 2.0 blueprint is so great. I was trying the autorail blueprint and this was a nightmare. Your is simpler and easier and I like that, I can now progress in my quest of finishing space age in 200h since I don’t want to rush and go to gleba xD

You could have showed the detail view on each interrupts themselves. That's the most important part.

Awesome content! Can you make the same blueprint but with 1-4 train setup? Thank you

Awesome work, can you do bigger trains and depo/stations for them? Would be useful for items like ore

Love it! and would be great to have an elevated rail integration

I am not sure I do get your point with Flex fluid trains, however maybe this could be usefull for you - back in 1.0, where i tried to do vanilla transport system of similar concept, i was looking for a way how to identify every train. I was using wood as signal, so train 1 contained 1 wood, train 2 contained 2 woods etc. Again, I don't know if it's useful in this case, but maybe you could differentiate between trains in the way that "a train that doesn't have wood is for liquids" and "a train that contains one wood is for transporting objects". (Then again, "a train with two woods is a combined train" - e.g. for mining uranium while importing acid, etc.) Alternatively (since one slot in the freight car is known after all) one could do the reverse logic, pump a small amount of liquid (which will not be used in the factory) into the liquid train and differentiate the trains that way. Problem is, you cannot save train cargo in blueprint... (Of course, it is possible to use something other than wood, but it seems to me that it won't end up in the train anyway.)

Thanks for video man! Great content !!! How can i increase trans size to 4 wagons?

I love trains so much. Thank you so much for this!

Excellent. Thankyou.

I won't be using these because i already have my own version but cool design. Also yes, this is way lighter on combinators per station but for that same reason it's also dumber and has other flaws, in this case the flex trains are forced to pass through depots mid-delivery every time and i PERSONALLY don't like that. Good job tho

so the wiring issue is what that comment on the last vid was referring to with respect to radars - you can drop those signals (both the count and the items) on a radar and it’ll work as-is without having a massive base-spanning circuit wire network. my own attempt at this looks mostly identical to yours (interrupts are trivially different) but instead of wiring along power lines or whatever, i just have a radar at every supply/demand station and one at every depot to pick up those signals. added bonus of full radar coverage of outposts which is great with the new remote view. i suppose radars are more expensive than the now-free circuit wires but i don’t use city blocks or similar so wiring everything up would be annoying. pleased to see other people also hit on using a clock to randomise delivery allocations and prevent over provisioning! felt like a dirty hack when i came up with it 😅

I'm up to trains and just got my bots. I don't understand circuits at all, so may I ask how to fill in all the background knowledge needed to understand what you've done to appreciate it better? Idc how long or number of videos it would take, I'm early retired and have as much time as allowed until the end of my life... unless some Biden big badda boom happens before he lets Trump take over... (currently what all the politicos are saying will happen). I'm not very good taking hypersonic 2x4s flying through my house, or very resistant to extremes in temperatures. Explosive diarrhea and projectile vomiting from radiation poisoning doesn't sound too good either... I know about that from my CMEs as a Haz-Tac Paramedic for FDNY. I have an adv degree in Applied Mathematics and Statistics, but no one would hire a married straight white guy, and other non-overlapping certs and licenses like a CPA. So no need to hold back on anything in case you think I worked a job that only required a HS diploma and I'm a derp.

You saved my life thanks

wow, this is actually impressive. the only thing im having issues with is high demand stations, maybe im just wrong for using 1 2 trains for this (iron and copper ore) but do you think you could do your magic on a station that takes a full side of the inner block and can unload train after train and set the limit of that station to like 3 or smth? that would be super useful as it wouldnt cause traffic on the main rails, thanks!!

my demand station is turned of eventhougth all the boxes are empty, im new to these type of traines and stuff. could anyone help me

You add any elevated tracks for fulgora?

Would have loved if you opened the interrupts in the video. Don't have access to a PC right now so I can check how it works ingame and I'm really interested in how they know that there is a delivery location available

You can improve this very easily by using the new radar functionality - Radars now connect to a wireless circuit network so you can include a radar at each station. Then, with a little bit of circuit logic (basically work out how many trains a station "wants" based on it's missing demand) and then adding that circuit to that wireless network, you can connect the depots to the same radar system. This will then only issue trains for stations with in-demand resources. But wait! theres more! Stations can now detect when a train is on-route and output this as a circuit condition as well. So when a station detects a train is on route to drop off resources to it, it takes that signal away from the circuit network as well, cancelling out the demand on the radar network so you don't dispatch endless trains to pick up resources with no dropoff.

"Dedicated fish train" is not something I ever thought to hear in relation to Factorio 😂

Superb. Thank you.

can you make a tutorial how to make this yout self ? caz when i tried this the train kept going from the depo to the outpost constandly.

why would full train return to depo?

I thought those pumps felt slower. Takes my trains forever to fill up. I'm glad to see that the stations can be controlled with less circuits. I need to update a bunch of my blueprints because I still have some older complicated logic to set train limits. It still works but would love to simplify it.

Thank you! I have been using IVTN for a very long time and have been waiting for an update =)

OK, my solution was fiddly af compared to how simple this one is. spoiler In the main solution, you have one connector ("main") which links the two fixed connectors, and the other connector ("counter") provides a "counter beam" which prevents that from working only when the red side is active. In my overengineered solution, the main connector links the two fixed connectors _and the red source_. The counter connector links the red fixed connector and the central blue lock. The connection between the main beam and the red source acts as a "counter counter beam" when blue is active. The connectors are placed such that, when the blue side is on, the beam going from the first connector to the red source intercepts the counter beam that's blocking the main beam. After aligning the connectors perfectly, when you then flip the switch to red, you need to reset the setup by blocking the main beam, which allows the beams to revert to the intended state where the counter connector is blocking the main beam. But when the switch changes to blue, the main beam turns on, as does the counter-counter beam, blocking the counter beam and hence allowing the main beam to flow unimpeded. (Without the counter-counter beam, the counter beam keeps eroding the main beam and you get a loop which falls a fraction short of opening the door.) The inverter didn't get used at all. Should have guessed my solution was "wrong" in that it is very rare (if not ever) that a puzzle element doesn't have some use. The reason the solution in the video works is that when the switch is changed to blue, two beams of different colours reach the counter connector both at a distance 4 (blue fixed -> main -> red fixed -> counter and blue fixed -> main -> inverter -> counter). Hence neither is stronger than the other and they cancel out, disabling the counter beam.

Looks like i cheesed this one as well lol spoiler 1) open blue door 2) take other connector inside and set up a link from blue door to lock, try to put it as far right (when inside the room looking out) as possible 3) connect first connector to red beam and lock but don't drop it 4) find a place where the connector can see both the red beam and lock, and drop it right at your feet 5) run along the path of the red beam, which will be blocked by your body 6) stop just short of blocking the blue beam, then quickly run inside the room before the blue ray is worn out by the red one crossing it 7) remove the blue connector

You can also cheese it by bouncing off Byron's head

I was so sick of beam blocking at this point A shame because the few puzzles who aren’t based on that are very good

I solved it in a different way, placed one beyond the gate and connected it to red and blue, blocked 2 beams one with my body and the other with the connector, then removed my self and took away connector at same time, it worked

This one is real hard

Character guide?

I read this video's description. Don't worry; L*nin*sm will eventually be defeated. Things will eventually be better. 😊