remote_control_controller

local mainChannel = 21
local modem = peripheral.wrap("back")
local event, side, channel, replyChannel, message, distance
local input

modem.open(mainChannel)

while true do
    input = read()
    modem.transmit(mainChannel, mainChannel, input)
    event, side, channel, replyChannel, message, distance = os.pullEvent("modem_message")
    message = tostring(message)
    print(message)
end