remote turtle control program

local running = true
write("Target: ")
local id = tonumber(read()) or 1
rednet.open("back")
local key = {[16]="up",[17]="forward",[18]="down",[30]="turnLeft",[31]="back",[32]="turnRight",[36]="digUp",[37]="dig",[38]="digDown",[22]="placeUp",[23]="place",[24]="placeDown",[28]="end",[57]="stop"}

local pressed = {}
local function listen()
  while running do
    local f = key[({os.pullEvent("key")})[2]]
    if f == "end" then
    running = false
    elseif f== "stop" then
    pressed = {}
    elseif f then
      table.insert(pressed,1,f)
    end
  end
end

local function execute()
  while running do
    while #pressed == 0 do
      os.pullEvent()
    end
    rednet.send(id,pressed[#pressed])
    table.remove(pressed)
    sleep(0.45)
  end
end

parallel.waitForAny(listen,execute)