i am trying to make a redstone contraption in wich you flip a switch while standing in a spacific location and a piston lifts you and some pistons on the bottom layer of the wall lower to show dispensers wich fire, i have played minecraft for years but i have never been redstone savvy.
the main purpose of it is to kill off any mobs that may have spawned in the room safely. im building it in creative and i will be using it in survival and generally it will just make my life easier
Not entirely clear about this build but there are some immediate issues:
• In what appears to be the RS line from the lever to the piston line, I see three repeaters; by my count you need only one (15 from the power source just under the lever).
This isn't breaking anything, but does introduce a delay and is an unnecessary expenditure of resources.
• Dispensers are not particularly accurate and standing only one block above the lin-of-fire will result in your being hit occasionally.
In pic#1 [636559818229979504.png]:
The viewer's right [VR] appears to be a line of pistons you want to activate/deactivate via a redstone line.
Turning on & off a RS torch powering the piston will work, but
to turn on and off the RS torch you need to power/depower the block to which the torch is attached. (At present, each of the torches is powering the RS line to VR of the torch line.)
The simplest way to fix this in the current build is to dig a one deep trench where the current RS line is, fill it with a row of repeaters pointing into the blocks supporting the RS torches and shift the powering RS line one to VR.
[One can economize by alternating RS dust with repeaters in the trench, but this will create a slight delay in the response of the repeater controlled pistons vs those wired to RS dust; this may not matter (or may be acceptable in light of the lower resource requirements).]
Does the RS line at VL in this pic lead around the corner to the "player elevation piston" and switch?
In pic#3 [636559819228862435.png]:
This appears to be the line of blocks (currently raised) that drop to reveal the dispensers.
No dispensers are visible in any of the pics; nor is the clock needed to fire them repeatedly. [Repeated fire is almost certainly needed to kill most mobs if you are planning on using normal arrows.]
Based on the open space visible behind this wall, I'm guessing you will want to power/clock the dispensers from below.
To power this dispenser line from below, you will need to move the repeater trench and new powerline to the other side of the pistons [VL in pic#1 [636559818229979504.png] ].
Also, because of Quasi-connectivity, you will either need to power the dispenser line from the top or rear OR move the line one back from the pistons.
If you move the dispenser line one back from the raised blocks in [636559819228862435.png], you will then be able to power the dispensers by running a line of RS torches under them and controling the torches with a clock circuit.
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WARNING: I have an extemely "grindy" playstyle; YMMV — if this doesn't seem fun to you, mine what you can from it & bin the rest.