My Reactor Code 1

--the total size of the buffer
local TOTAL_MAX = 10000000
--Buffer zone size
local BUFFER_SIZE = 4000000

--connect to reactor
local reactor = peripheral.wrap("back")

--confirm connection
if(not reactor.getConnected) then
    print("Not connected to Reactor")
end

--turn the reactor on
if(not reactor.getActive()) then
    reactor.setActive(true)
    print("Starting Reactor")
end

--move control rod to defaul level
reactor.setAllControlRodLevels(0)


while(true) do

    local currentEnergy = reactor.getEnergyStored()
    if (currentEnergy < BUFFER_SIZE) then
        reactor.setActive(true)
    elseif (currentEnergy > (TOTAL_MAX - BUFFER_SIZE) ) then
        reactor.setActive(false)
    end
    sleep(2)

end