So I too got my hands on one of those cheap 433Mhz transmitter/receiver components. I've followed nearly every tutorial about connecting them to a Raspberry Pi but I can't seem to figure out the following:
The tutorials state that I should hook up the VCC of the receiver to the 5v pin. This however makes the unit unable to receive any signals using RFSniffer. When I connect the VCC pin to 3.3v, I get signals but only from a few feet away.
What am I doing wrong here?