frostmaw_spawn_receive

local modem = peripheral.wrap("bottom")
modem.open(00001)

redstone.setOutput("left",false)

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

    if message == "1" then
        redstone.setOutput("left",true)
    else
        redstone.setOutput("left",false)
    end
    sleep(1)
end