Hi Merii, I could do that, and the multiple timer block toolbar buttons thing is something I am using in another build already, but in this one I didn't want the solar panels to unfold too quickly, so just the one toolbar is enough

Further optimization building off of Brianetta's suggestion: Since timer blocks have multiple hotbars (ctrl-1 through 9 just like your character) you can put the Decrease Speed/Increase Speed on each of them to get more than one boost, which would make the panels fast again.

That’s sounds like a much better way, I’ll take a look soon!

I have a suggestion for the pack/unpack timers. At the moment, the timers both simply reverse the solar hinges, which can get out of sync if the pack/unpack buttons are pressed multiple times. A more reliable approach is to include two actions; on one, have "reset speed" followed by "increase speed", while on the other, "reset speed" followed by "decrease speed". You will lose fine control of the speed, but you will gain reliable operation of the panels.