HT12D receiving a VT signal but no output - Electronic Circuits Projects Diagrams Free

extar · 25th March 2007, 10:07 AM

Hi all, I'm working on a scheme to send data from one module to another. The parts i'm using are a HT12E + TX433, with 1 Mohm resistor for the transmitter and Ht12D + RX433, with 47K resistor. (followed the velleman scheme) I'm using a microcontroller to drive the transmitter. The code is:

te=1
a=1
b=1
c=1
d=1
te=0
waitms 500
te=1
a=0
b=0
c=0
d=0
te=0

nothing wrong with that. I can see the Ht12E transmitting.

on the other side there 'm receiving information on the data in-pin. The VE-pin is changing on the fluctuating signal. This works great. But my dataoutput pins are giving a low outputsignal (10mV). I guessed this would have something to do with noise and uppered the resistor on the HT12D to get a higher frequency, but then I get no output signal. Any suggestions?

extar · 25th March 2007, 12:20 PM

ok,

configured the pin for output on the mc instead for input. no probs

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25th March 2007, 10:07 AM	(permalink)
extar	HT12D receiving a VT signal but no output Hi all, I'm working on a scheme to send data from one module to another. The parts i'm using are a HT12E + TX433, with 1 Mohm resistor for the transmitter and Ht12D + RX433, with 47K resistor. (followed the velleman scheme) I'm using a microcontroller to drive the transmitter. The code is: te=1 a=1 b=1 c=1 d=1 te=0 waitms 500 te=1 a=0 b=0 c=0 d=0 te=0 nothing wrong with that. I can see the Ht12E transmitting. on the other side there 'm receiving information on the data in-pin. The VE-pin is changing on the fluctuating signal. This works great. But my dataoutput pins are giving a low outputsignal (10mV). I guessed this would have something to do with noise and uppered the resistor on the HT12D to get a higher frequency, but then I get no output signal. Any suggestions?

25th March 2007, 12:20 PM	(permalink)
extar	ok, configured the pin for output on the mc instead for input. no probs