local drillTime = 5
rednet.open("top")

function moveForward()
	rednet.broadcast("pick")
	sleep(1)
	rs.setOutput("back",true)
	sleep(1)
	rs.setOutput("back",false)
	rs.setOutput("bottom",true)
	rednet.broadcast("drop")
	sleep(1)
	rs.setOutput("bottom",false)
end
function mine()
	moveForward()
	sleep(drillTime)
end

while true do
	sleep(1)
	if rs.getInput("front") == true then
		mine()
	end
end