CC Cow feeder

local function output(line,str)
    term.setCursorPos(1,line)
    term.clearLine()
    term.write(str)
end

local function feed()
    local wheat = turtle.getItemDetail(1)
    if not wheat or wheat.name~="minecraft:wheat" then
        error("Need wheat",0)
        return
    end
    output(2,"Feeding..")
    local count = 0
    local limit = 255
    local feed = true
    turtle.select(1)

    while limit>0 and feed do
        if not turtle.placeDown() then
        limit = limit-1
        else
        count = count+1
        limit = 255
        end
        output(3,count.." ("..limit..")")
        feed = turtle.getItemCount(1)>5
        sleep(.1)
    end
    output(3,"")
end

output(string.format(1,"#%d - %s",
    os.getComputerID(),
    os.getComputerLabel))
sleep(1)
while true do
    output(2,"Wait RS signal")
    os.pullEvent("redstone")
    feed()
    local countdown = 10
    while countdown>=0 do
        output(2,"Countdown: "..countdown)
        countdown = countdown-1
        sleep(1)
    end
end