Hopper disabling with redstone

I recently run into problems regarding disabling hoppers. I would like to disable the three hoppers individually. But I am unable to achieve this.

Extra space between the chests/hoppers is no solution for me :/ I have tried adding a repeater, but that does not work with hoppers.

Just to clarify: This is just an example in a test world. In my main world, I have a long line of redstone between the three lever and the hoppers. And the hoppers will be combined as shown in the picture, to one hopper line.

Thanks for you help!

Solution 1:

Welcome to the world of 1-wide tileable contraptions.

Redstone dust is one of worst choices, very restricting - you need a very precise distance from power source to the receiver, equal to the power level of the source. Most sources produce signal strength 15, so that's not very convenient; sources of weaker signal tend to be rather inconvenient.

Another rather inconvenient option is to split the signal vertically:

For short distances repeaters are a decent option, but with delay they produce that's not always viable.

Or use the sticky blocks - again, not getting them stick to what you don't want them to stick to is a bit of pain - the redstone blocks are glued to the side because if they were at the end, adjacent redstone blocks would stick to the extended "branch":

Your more convenient alternatives are various 1-tileable transports - with the caveat that most of them operate in pulse logic (odd pulse = 1, even pulse = 0) - and require a dual edge detector to get converted from standard binary logic (signal = 1, lack of signal = 0) and a T flip-flop to "rectify" them back into it. Luckily the easiest dual edge detector is an observer, and the easiest T flip-flop is a sticky piston with a redstone block. Still, they are definitely practical:

• Powered and Activator rails

And if you want fancier shapes, observer transport is an option. Use indirectly powered noteblocks for corner pieces, padding, and to reduce the general cost. Either forward signal directly observer-to-observer, or power the noteblocks indirectly - otherwise signal from directly powered block will "spill over" to the adjacent blocks.

There's a lot more to 1-wide tileable builds, and they are a graceful, broad subject - this answer covers a good bit about vertical signal transport.