waterTop

local modem = peripheral.wrap("top")
rednet.open("top")

local piston = "back"
local towerid = "pjwater2"

print("Listening on " .. towerid)

redstone.setOutput(piston, true)

while true do
    event, senderId, message, protocol = os.pullEvent("rednet_message")
    if protocol == towerid then
        if message == "stopWater" then
            print("Stopping water")
            redstone.setOutput(piston, true)
        elseif message == "startWater" then
            print("Starting water")
            redstone.setOutput(piston, false)
        end
    end
end