So I was planning on make a trap for my friends in my nether tunnel. I was trying to make it so the transmitter will give a signal to the recievers to turn on the dispencers will with fire charges. I've tried using a timer to have it shoot fthe charges every now and then. I've tested it several times and tried new layouts for the trap and nothing seems to work. I was wondering someone who has tinkered with the recievers/transmitters can help me.