433Mhz Receiver - No signal

---

Hi there,

I do not know why, but I can’t receive any signals via 433Mhz to an Arduino.
I tried one Arduino Uno, one Arduino nano, several different receivers (3 boards xy-mk-5v and a CC1101 board), I tried different sketches, directly on Arduino and via homeduino / Raspberry Pi. Power supply, cabling and so on seems to be OK. Even after several checks, I didn’t find any errors or connection mistakes. For sending, I tried an Intertechno ITW-852 sender and a Bresser Hygro / Thermo sensor which sends it signals also via 433Mhz. Distance sender - receiver < 1 meter. Does anybody have an idea or tips what else I could try?
Thanks!

Did you use an antenna for youre receiver?
did you tried an rf sniffer? you can find one in the mysensors library then try to snif rf trough the serial monitor.

Yes, I also attached an 17cm antenna without any success. I also tried different example sketches (rc-switch, RemoteSwitch,…).

What version of pimatic do you use?
Did you turn on the debug messages in homeduino?

The xy-mk-5v is bad hardware. Check our hardware tip on receivers here
https://forum.pimatic.org/topic/487/hardware-tip-433-mhz-receiver-for-pimatic

I also tried to communicate by test sketches just on Arduino, so it does not depend on the version of pimatic.
I already ordered another receiver, but it should also work via xy-mk-5v on short distances?!

Yes it should be working, bet they are not reliable. The best receiver/transmitters are the heterodyne ones. (If you but from ali express or ebay, look at that word) I had 4 sets and not one failed.