local computer = require("computer")
local rs = require("component").redstone
local sides = require("sides")

local lastPowerValue = -1
local compressorState = false
local cutValue = 8


print("The cut value is fixed at " .. cutValue .. ". At this value, it will automatically stop compressor.")
while true do
    local power = rs.getInput(sides.back)
    if power ~= lastPowerValue then
        lastPowerValue = power
        print("[" ..
        os.date():sub(9) .. "]" .. " Current redstone value: " .. power .. "/16.0 (" .. power / 2 .. "BAR +-)")
    end

    if (power < cutValue) then
        rs.setOutput(sides.left, 14)
        if compressorState ~= true then
            print("[" .. os.date():sub(9) .. "]" .. " Turning ON compressor...")
            compressorState = true
            computer.beep()
        end
    else
        rs.setOutput(sides.left, 0)
        if compressorState ~= false then
            print("[" .. os.date():sub(9) .. "]" .. " Turning OFF compressor...")
            compressorState = false
            computer.beep()
        end
    end

    os.sleep(2)
end