Minecraft>Door

rednet.open("left")
local val = 0
local msg = "door-on"
while true do
    event, id, text = os.pullEvent()
    if event == "redstone" then
        if msg == "door-on" then
            val = redstone.getAnalogInput("back")
            if val >= 9 then
            redstone.setOutput("right", false)
            else
            redstone.setOutput("right", true)
            end
        end
    elseif event == "rednet_message" then
        if id == 5 then
            if text == "door-on" or text == "door-off" then
                msg = text
            end
        end
    end
end