y

mod = peripheral.wrap("bottom")
sensor = peripheral.wrap("right")

mod.open(2)
mod.open(3)

while true do
    local event = {os.pullEvent()}
    if event[3] == 3 then
        redstone.setOutput("left", true)
        sleep(1)
        redstone.setOutput("left", false)
    else if event[3] == 2 then
        local count = 0
        for k,v in pairs(sensor.sense()) do
            if v["name"] == "Cow" then
                count = count + 1
            end
        end
        mod.transmit(2,2,tostring(count))
    end

end