Block Placer

function doNothing()
    os.queueEvent("randomEvent")
    os.pullEvent()
end

sideIn="left"
sideOut="right"
curslot=1
while true do
  while turtle.getItemCount(curslot)<1 do
    rs.setOutput(sideOut,true)
    curslot=curslot+1
    if curslot>16 then
      curslot=1
    end
    doNothing()
  end
  rs.setOutput(sideOut,false)
  turtle.select(curslot)
  if rs.getInput(sideIn) and not(turtle.detect()) then
    if turtle.place() then
      doNothing()
    end
  else
    doNothing()
  end
end