energyReading

local modem = peripheral.wrap("back")
local hystMem = 0
local limitLow = 50
local limitHigh = 95
local outputSide = "top"

while true do

	modem.open(1)
	local event, modemSide, senderChannel, replyChannel, message, senderDistance = os.pullEvent("modem_message")
	modem.closeAll()
	print("energy reading was: "..message)
	local energy = message
	if energy < limitLow then
		redstone.setOutput(outputSide,false)
		hystMem = 0
	end
	if (energy >= limitLow) and (energy <= limitHigh) then
		if hystMem == 0 then redstone.setOutput(outputSide,false) end
		if hystMem == 1 then redstone.setOutput(outputSide,true) end

	end
	if energy > limitHigh then
		redstone.setOutput(outputSide,true)
		hystMem = 1
	end
end