Computercraft Endoflame Turtle

local function drop()
    turtle.drop(4)
    turtle.turnLeft()
end
local function pick()
    turtle.suck()
    turtle.turnLeft()
end

while true do
    if redstone.getInput("top") == false then
        if turtle.suckDown(16) then
            drop()
            drop()
            drop()
            drop()
            sleep(3)
            pick()
            pick()
            pick()
            pick()
            turtle.dropDown(16)
            sleep(100)
        else
            sleep(300)
        end
    end
end