single turtle well placer inspired by psyestorm(old version)

local miningwell=1
local chest=2
local conduit=3
local args={...}
local slp = 10
local lx=30
local ly=30
local slot=3
if args[1] ~= nil then slp = tonumber(args[1]) end
if args[2] ~= nil then lx = tonumber(args[2]) end
if args[3] ~= nil then ly = tonumber(args[3]) end

for j=1,ly do
slot=0
for i=1,lx do

while slot < 13 and turtle.getItemCount(conduit+slot)== 0 do slot=slot+1 end
if slot==13 then break end

turtle.select(miningwell)
turtle.placeDown()
turtle.back()
turtle.select(chest)
turtle.placeDown()

turtle.select(conduit+slot)

turtle.place()
sleep(slp) --don't remember how long
turtle.select(chest)
turtle.digDown()
turtle.down()
turtle.select(miningwell)
if turtle.getItemCount(miningwell)>0 then
    slp=slp+1
    turtle.drop()
end
turtle.dig()
turtle.up()

end
turtle.select(conduit)
--- retract the conduits
while turtle.detect() do  turtle.dig(); turtle.forward(); end;

turtle.turnLeft()
turtle.back()
turtle.placeDown()
turtle.turnRight()
turtle.back()
turtle.place()
turtle.back()
turtle.place()
end