Our video showing how to evenly balance the load on a single conveyor in Factorio, while also pulling evenly from both input lanes.
This balancer is slightly larger than the 1 to 1 balancer that only balances output, and it also includes more types of components, however it pulls in from both lanes alternately. Use this type of balancer if you need a balancer output and you don’t want a stopped-up lane on the input belt to back up movement somewhere earlier in the chain.