slimelisten.lua

local modem = peripheral.wrap("back")
modem.open(50)

rs.setAnalogOutput("right", 15)

print("started")

while true do
    local event, modemSide, senderChannel, replyChannel, message, senderDistance = os.pullEvent("modem_message")

    if message == 1 then
        print("rs on")
        rs.setAnalogOutput("right", 15)
    else
        print("rs off")
        rs.setAnalogOutput("right", 0)
    end
end