in that case you have to use | Projects › Projects › multiplexing devices which do not have chip select › in that case you have to use October 24, 2014 at 5:55 pm #12315 Ashutosh BhattParticipant in that case you have to use 2 to 4 decoder/demux. but one more addition is you have to switch on/off relays using output lines of this dec/demux and from relay contact you give Vcc supply to your transmitters.
