manaReading

local modemSide = "right"
local manaLevel = 10
local manaReading = 0

local modem = peripheral.wrap(modemSide)


function getReading()
	while true do
		modem.open(2)
		local event, modemSide, senderChannel, replyChannel, message, senderDistance = os.pullEvent("modem_message")
		modem.closeAll()
		print("mana reading was: "..message)
		manaReading = message
	end
end

function oreHarvesting()
	while true do
    	local success,info = turtle.inspectDown()
    	if success and (info["name"] ~= "minecraft:stone") and (manaReading > manaLevel) then
        	turtle.digDown()
    	end
    	sleep(3)
end

end

parallel.waitForAll(getReading,oreHarvesting)