afti_khan
Member level 2
dear.......,
i'm student of final year electrical engineering. i'm working on my final year project but theres some problem.
my project is depicted as under:
a keypad is interfaced with the 8051 uC port-1. with the TXD pin of the uC i've connected the reset pin of the 555 timer & the timer is configured for 38kHz square wave.On the output pin of the 555 i've placed an IR LED with a 15ohm resister( the 555 is getting Vcc=5V).
The receiver module which i'm using is TSOP1738. The output of the TSOP1738 is given to RXD pin of 8051 uC. on receiving a valid 8 bit code the controller on the receiver side complements a bit on port-1.
The problem is that the range of my project is very low. what should I do?
plz help me as soon as possible bcz my project submission date is approaching
i'll be very thnkful to u
i'm student of final year electrical engineering. i'm working on my final year project but theres some problem.
my project is depicted as under:
a keypad is interfaced with the 8051 uC port-1. with the TXD pin of the uC i've connected the reset pin of the 555 timer & the timer is configured for 38kHz square wave.On the output pin of the 555 i've placed an IR LED with a 15ohm resister( the 555 is getting Vcc=5V).
The receiver module which i'm using is TSOP1738. The output of the TSOP1738 is given to RXD pin of 8051 uC. on receiving a valid 8 bit code the controller on the receiver side complements a bit on port-1.
The problem is that the range of my project is very low. what should I do?
plz help me as soon as possible bcz my project submission date is approaching
i'll be very thnkful to u