How to power multiple pistons facing up?

So, I'd like to know how to power a lot of pistons what are facing up.

I want to know how to power these. I've also tried to use redstone under the pistons for an easier way but that doesn't work either. I want to power them with redstone dust, and a button, so it's toggleable. But I know redstone doesn't work that way.

2 Answers

It's a bit of a hassle, but I normally use something like this:

3

If this was in creative mode with command blocks enabled, you could use the /fill command to fill the spaces underneath the pistons with either torches or redstone blocks.