Troubleshoot with RF 315mhz M4 receiver and transmitter.

[b_r_jones]

Yes. The antenna is fully uncoiled. The unit works fine for a few minutes, then will not work unless the transmitter is within inches of the receiver.

In my initial testing, I was wired straight to LEDs. No issues at all. But, when wiring to an MCU (Iteadduino, Fez PandaII, Arduino), all have the same result -- it seems to get 'lost' after less than a minute of operation and will then only work withing 2 or 3 inches...

[Zener]

The MCU noise could be interfering with the receiver.

[b_r_jones]

yes, I have considered that, but don't know what to do to troubleshoot it? And, if that is the case, any suggestions on some sort of shield???

[b_r_jones]

And, if it's MCU noise, shouldn't the forums on Adafruit and other sites be littered with this issue? I'd much rather it just be that I'm doing something wrong -- then I can fix it!

[adafruit_support_bill]

How do you have it connected to the MCU? A wiring diagram or photo would be good.

[b_r_jones]

Sigh...

Yes, I know this would be best. I made the poorly thought out decision to respond to the forum while I'm at work, so I will not be able to provide pictures or a schematic until I am home and have some downtime.

Thanks! (I was just hoping this item had been solved and there was a known answer I could try when I get a chance.)