Tekkit Machine Room Door Close

local radar, currentSecond, lastInput = peripheral.wrap('radar_0'), 0, 0

function initiate()
    while true do
        loop()
        currentSecond = currentSecond + 1
        sleep(1)
    end
end

function loop()
    -- Every 2 Seconds to reduce amount of sensor calls and potentially limit lag
    if ( currentSecond % 2 == 0 ) then
        -- Probe Sensors
        local isInside
        for index, player in ipairs(radar.getPlayers()) do
            if ( player.distance < 5.5 ) then
                isInside = true
                break
            end
        end
        term.setCursorBlink(true)
        rs.setOutput('bottom', not isInside)
        term.setCursorBlink(false)
    end
end

initiate()