Assembling machine 3 speed, red circuit production puzzle

[matrix47]

It seems that something is not right with assembler machine 3 production speed. With them I can't get perfect ratio for red circuit production - 1 copper wire assembler per 8 red circuit assemblers.
Check out this gameplay video on youtube: https://www.youtube.com/watch?v=bnFqaZrs5Zk (first 40 seconds).
Copper wire machines on bottom seem to produce at full speed, but the top most red circuit assemblers stop from time to time, though they shouldn't.
You can look at small green light on the assembler to see if it is working ( https://forums.factorio.com/forum/viewtop ... 94&t=18369 ).

I have posted this on reddit first, and some people confirmed they had the same problem: https://www.reddit.com/r/factorio/comme ... n_problem/

Any help will be strongly appreciated!

[DaveMcW]

The 1:8 ratio is wrong.

Copper wire recipe takes 25 ticks to produce, not 24 = 60 * 0.5 / 1.25

Advanced circuit recipe takes 385 ticks to produce, not 384 = 60 * 8 / 1.25

The correct ratio is 10:77.

[daniel34]

Given this simple setup:

Image

I can see that DaveMcW is right. The factory makes 287.9 cable/min as predicted:
3600 (ticks per minute) x 2 (products per run) / 25 (ticks it takes) = 288

What I don't understand, why does it take 25 and not 24 ticks? Is there a technical reason for that and are other (seemingly) perfect ratios affected too?
1.25 (AM3 crafting speed) x 2 (copper cable per prod. run) / 0.5 (time in seconds to produce) x 60 (seconds in a minute) = 300

EDIT: doing the same with Assembler 2, this calculation checks out:
0.75 (AM2 crafting speed) x 2 (copper cable per prod. run) / 0.5 (time in seconds to produce) x 60 (seconds in a minute) = 180
Measured result on production screen: ~180 cable / min
Why does the AM3 behave differently?

[matrix47]

The 1:8 ratio is wrong.

Copper wire recipe takes 25 ticks to produce, not 24 = 60 * 0.5 / 1.25

Advanced circuit recipe takes 385 ticks to produce, not 284 = 60 * 8 / 1.25

The correct ratio is 10:77.

I'm curious, where do numbers 25 and 385 come from?

[DaveMcW]

I'm curious, where do numbers 25 and 385 come from?

Writing a script that watches assembling machine output.

I'll give it here, but it will probably crash your game if you don't have chests where it expects.

Script

Code: Select all

/c
script.on_event(defines.events.on_tick, function()
local chests = game.player.surface.find_entities_filtered{area = {{-262, -52}, {-250, -50}}, name="steel-chest"}
local count = 0
count = count + chests[1].get_inventory(defines.inventory.chest).get_item_count("advanced-circuit")
count = count + chests[2].get_inventory(defines.inventory.chest).get_item_count("advanced-circuit")
if (old_count ~= count) then
	old_count = count
	game.player.print("tick: " .. game.tick .. " circuits: " .. old_count)
end
end)

[daniel34]

I'm curious, where do numbers 25 and 385 come from?

Writing a script that watches assembling machine output.

I see, but do you know why it is 25 and not 24?
After all, with the AM2 it is 40 ticks, which is 60 * 0.5 / 0.75
3600 / 40 ticks * 2 cable = 180/min, and that is what I measured in Factorio.

For AM3:
60 * 0,5 / 1.25 = 24 ticks, so 3600 / 24 ticks * 2 cable = 300/min, but measure says 288/min.

[matrix47]

I'm curious, where do numbers 25 and 385 come from?

Writing a script that watches assembling machine output.

I'll give it here, but it will probably crash your game if you don't have chests where it expects.

Script

Code: Select all

/c
script.on_event(defines.events.on_tick, function()
local chests = game.player.surface.find_entities_filtered{area = {{-262, -52}, {-250, -50}}, name="steel-chest"}
local count = 0
count = count + chests[1].get_inventory(defines.inventory.chest).get_item_count("advanced-circuit")
count = count + chests[2].get_inventory(defines.inventory.chest).get_item_count("advanced-circuit")
if (old_count ~= count) then
	old_count = count
	game.player.print("tick: " .. game.tick .. " circuits: " .. old_count)
end
end)

hm, so maybe there is a constant delay of 1 tick between production cycles?

[Jackalope_Gaming]

I have made a blueprint for red circuit assembly that directly inserts copper cable from the assembler into all 8 red circuit assemblers. My best guess is the assembler might not be able to make both copper cables at the same time, so each end up as part of a partial tick, and if the gap between those happens right with a game tick then the first one will happen on tick 24 and the second will have to be output on tick 25. http://factorioblueprints.com/view/zoLsyxznWfak6WCPA

In testing with that using assembler 3's I am also seeing a slight copper cable shortage. That's if we're saturating the green circuits another way since the design can't get enough iron input or green circuit output to fully feed all 8 red circuit assemblers.