test

p=peripheral.wrap("front")
i=p.getFrequency()
if i==4095 then i=1 end
while i<=4095 do
p.setFrequency(i)
if p.getTankInfo()[1].contents.amount>0 then
--os.pullEvent("key")
print(i)
while p.getTankInfo()[1].contents.amount>0 do
sleep(1)
end
end
i=1+i
end
p.setFrequency(1)