microcontroller 8051 rftx rx

Posted on Feb 7, 2014

The problem is when i connect the 8051 to the encoder the data send is not received at the receiver but as soon as the 8051 connections are removed the transmisison works perfectly. thus manually the RF communication works perfectly i. e the 8 bit data which i give manually at the encoder is perfectly send and then later received at the decoder sid

microcontroller 8051 rftx rx
Click here to download the full size of the above Circuit.

e Is some sort of interfacing required b/w encoder-ht640 and microcontroller 8051 or at the receiver side b/w the decoder-ht648l and 8051. help me plz its urgent these RF modules need data in serial form and the encoder IC is more like a shift register here. 8051`s uart sends data serially. RF modules accepts max datarate of 4000bps normally. so if you keep uart at 1200 bps then uart o/p can be directly connected to transmitter pin. similarly on the other side. receiver`s o/p can be connected to rx pin of 8051.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    Car Battery Charger
    Infrared approach detector / sensor
    Low-Drift/Low-Noise Dc Amplifier
    15 Watt switching power supply
    Make Your Own USB Device using PIC18F4550
    tea5551t am radio receiver circuit design electronic project
    Mendel Electronic Wiring
    Direction Sensitive Light Barrier
    Intelligent Ultrasonic Ranging IC 4Y4 form a monolithic liquid crystal display rangefinder circuit diagram