after the old builds didnt work anymore with 0.13, I decided to build one myself
The way to ensure Itemcount, is to limit the stack sizes of boxes. It can only switch recipes after smelting a full stack (but thats no concern in my opinion).
In a first step, I limit a requester chest to 4 slots and fill some iron ore, copper ore, stone and iron plates in it.
Then I request 50 of each per wire condition and my bobs fill it to exactly 50 ore/100 plates due to the stacklimit. The request is turned off again.
Now auto-mode is ready to start:
A Filter inserter takes out what is wanted and drops it to a wooden chest limited to 1 stack (now I think about it, that limit is unnecessary )
When the wooden chest contains 50 ore/100 iron, the filter inserter is turned off and the request is turned on again to refill.
Then the stack gets smelted and I´m ready to repeat
It only becomes deadlocked, when you starve on raw material or your bobs are to slow to fill the requester chest while the stack gets smelted.
is it tileable
lets smelt some copper
Blueprint string
Next thing I´m going to do is the controller for that beast Loadbalancing, preventing deadlocks due to missing resources etc