Microcontroller › 8051 › using RF modules. with HT12e/d › Your address bits in the
May 1, 2012 at 10:05 am
#7566
Participant
Your address bits in the encoder are floating, while those are connected to ground in the decoder. Do the same in the encoder also. Also note that when the keys in the transmission circuit are open, your input bits are floating, So pull up D0 to D3 of the encoder to VCC using a resistor not less than 1k. I hope you’ve selected matching resistors for the encoder and decoder, after going through the datasheet.