modem = peripheral.wrap("right")
modem.open("69")
while true do
event,a,b,c,d = os.pullEvent("modem_message")
if d == "recalibrate" then
 turtle.dig()
 turtle.forward()
 turtle.dig()

 turtle.select(1)
 turtle.place()
 turtle.back()
 turtle.place()
end
end