Re: RF M4 problem
Ok...so after some more testing and a lot of wasted time, I've concluded that this thing has to be broken.
It doesn't matter what power supply I use, 9v battery, 4 AA batteries, 5v wall-wart or 9v wall-wart. They all have strange intermittent behavior. When I measure the voltage level of Vcc, it matches the input voltage. Yet when I measure the voltage of any of the data pins with the device powered on but no buttons pressed, the voltage levels are fluctuating all over the place. And pressing any of the remote buttons doesn't help in any regards. Sometimes the LED is on, sometimes it does nothing, other times it blinks.
Looks like I'm going to try and return/exchange it.