rednet_receive.lua

    --modem=peripheral.wrap("back")
    rednet.open("back")
    print("ERROR: Sending computer isn't running startup program")
    sleep(1)
while true do
    term.clear()
    term.setCursorPos(1,1)
    channel, message, returnChannel = rednet.receive()
    term.clear()
    term.setCursorPos(1,1)
    print("Last Message Received: "..message)
    if message == "start" then
        redstone.setOutput("bottom",true)
        redstone.setOutput("right",true)
        sleep(1)
    elseif message == "STOP" then
        redstone.setOutput("bottom",false)
        redstone.setOutput("right",false)
        sleep(1)
    end
end