as u said, i connected a 47kohm resistor to pin 3 before the power supply. but i am not sure how to connect the power SUPPLY-filtering part(10ohm+10uf). anyway, i tried putting them in series with the power supply and in parallel and no matter what kind of design.
actually, now all the circuits(transmitter part and receiver part) r patched up on the same breadboard. and the antenna is just a jumper wire. r these the factors of noise? i think so. but i have already fabricated the printed circuit board(PCB). as long as i am on the right track, there should be no problem when they r tested on the PCB.
oh, i also want to clarify that i am taking the output from pin 7 not pin 6. pin 6 is not used at all.
maybe there r some further problems with my receiver circuit, i describe it as below:
pin 1 is connected to a jumper wire(as antenna);
pin 2 and pin 4 are fed to the GRound
pin 3 is connected with a 47k resistor to the +5 vpower supply;
pin 5 is connected directly to the +5v power supply
pin 6 is not connected
pin 7 is the connected the PORTB.7
transmitter part will be posted upon request.
why is it so difficult to meet the requirement? i just want the LCD to show signal it received and no. of times.
and the signal is just a binary digit(2-8). ONLY!!!!!!!!!