jetfuel

fer = peripheral.wrap("back")
local size = fer.getInventorySize()
function redControl()
local count = 0
    for i=1, 6 do

        --local inv = fer.getStackInSlot(i)["name"]
        if fer.getStackInSlot(i) == nil then
            count = 0
        else
            count = count + 1
            print (count)
        end
    end
        if count == 6 then
        rs.setOutput("bottom", true)
        print ("red in")
    else
        rs.setOutput("bottom", false)
        print ("no red")
    end
end
while true do
redControl()
os.sleep(2)
end