miner

local robot = require("robot")
local component = require("component")
local inv = component.inventory_controller

function mineDown()
  local result, type = robot.swingDown()
  if result == false and type == "block" then
    print("Bedrock reached")
    return false
  else
    robot.select(1)
    robot.placeDown()
    robot.select(5)
    inv.equip()
    robot.swingDown()
    inv.equip()
    robot.down()
  end
end

repeat
  mineDown()
until false