RF Module not producing square wave output
时间：04-07
整理：3721RD
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Hi Everyone,
I am having some problems with an RF module:
http://www.aurelwireless.com/wp-cont...201033G_um.pdf
The scenario is this:
I have an old custom power controller in the garage, it has remote a facility to monitor things and send an alarm signal if something goes wrong. I wish to build the receiver into my own new device. I am hoping to record the outout of an ASK module with my soundcard on my computer, so I can work out the coding for a new receiver design.
I have the unit in a breadboard at the minute, I have seen people across the web having some success on a bread board. I initially had it connected to a PIC to drive the enable lines and RX/LINES HIGH and LOW, I connected some screened cable to a mono jack and used the microphone input on my computer to see the waveform in an audio recording program. The cable was connected to the digital out and ground.
I am not receiving a digital out on the line, I receive a full analogue waveform, similar to that of recorded speech. The receiver now seems to have a regular emission of an audio looking wave every few seconds. It does not look akin to randon signal noise at all, it seems as the reciver maybe oscilating or unstable?
I thought the clock on my MCU would be causing a noisy ground, so I built the module into a breadboard stand-alone, powered from a 9v battery and a 3v regulator, which seems to be a clean output?
I am having the same problem, no sqaure-wave output from the reciver. It is definitely receving a signal as when I activate my transmitter in the garage I can see a new waveform appearing.
The antenna I am using is a 30cm long piece of bell-wire, could this be the problem?
Any help would be much appreciated :)
I am having some problems with an RF module:
http://www.aurelwireless.com/wp-cont...201033G_um.pdf
The scenario is this:
I have an old custom power controller in the garage, it has remote a facility to monitor things and send an alarm signal if something goes wrong. I wish to build the receiver into my own new device. I am hoping to record the outout of an ASK module with my soundcard on my computer, so I can work out the coding for a new receiver design.
I have the unit in a breadboard at the minute, I have seen people across the web having some success on a bread board. I initially had it connected to a PIC to drive the enable lines and RX/LINES HIGH and LOW, I connected some screened cable to a mono jack and used the microphone input on my computer to see the waveform in an audio recording program. The cable was connected to the digital out and ground.
I am not receiving a digital out on the line, I receive a full analogue waveform, similar to that of recorded speech. The receiver now seems to have a regular emission of an audio looking wave every few seconds. It does not look akin to randon signal noise at all, it seems as the reciver maybe oscilating or unstable?
I thought the clock on my MCU would be causing a noisy ground, so I built the module into a breadboard stand-alone, powered from a 9v battery and a 3v regulator, which seems to be a clean output?
I am having the same problem, no sqaure-wave output from the reciver. It is definitely receving a signal as when I activate my transmitter in the garage I can see a new waveform appearing.
The antenna I am using is a 30cm long piece of bell-wire, could this be the problem?
Any help would be much appreciated :)
From thew spec sheet- when in transmission mode (pin 5 high) the data out line is pulled down. I think that means you need an external pull up resistor to Vcc, try 100K to start with - shouldn't do much damage!
Frank