Hello,
I’m having all kinds of trouble getting the WRL-08948/WRL-08945 RF transmitter/receiver working. At this point I’ve hard-wired the transmitter to send a simple logic high (+5) and am looking at the received data line in the receiver with a scope. The received data is erratic. I’ve tried with and without antennas, placing some distance between the devices, etc. No luck.
Under ideal conditions (low RF noise), should I be able to indefinitely transmit a constant value?
You need to send a data stream and not a continuous carrier from the transmitter. At least that is how the receivers that I use work because of the filters in the receiver.
Thanks. I was hoping to use the drop from high to low as a trigger for an interrupt (on the receiving side). I started out with a PIC/code on each side and was having trouble. So I thought that I’d eliminate any software/interrupt issues and do a simple test.
Yes, I tried the same thing myself when I was getting the modules integrated. The modules do work pretty well, but they require a little attention. I have had the best results using bit-banged serial receive because the received data can cause problems for some hardware USARTs, and it simplified the software required.jrhiggens:
So I thought that I’d eliminate any software/interrupt issues and do a simple test.
Great…much better, a continuous square wave is working. Looks like I’ll have to abandon my original idea of firing an interrupt on a falling edge though. Thanks for the responses.