Delay/Lag with RFXcom devices

Hardware
1

Hello,

I have several RF433 devices and experience a significant delay in response times. I’m not sure how to debug the cause and fix the delays (if possible).

Examples:
RF remote ==> RF switch takes 1-2 second
RF doorbell ==> RF doorbell takes about 4 seconds
RF motion ==> RF switch takes 2-3 seconds
RF remote ==> Hue takes 1 second

In all above examples, pushing remote/doorbell/motion is instantaneous visible in de webinterface.

So HA detects a RF433 command very fast. But it takes a lot of time from detecting to acting. As if the USB bus for RFXCom is blocked for a while after receiving.

Is this an RFXCom issue or a Home-Assistant issue?
Is it possible to solve this behaviour?

Possible Ideas I have:

  • Add another RF transmitter to my RaspPi so that recieving and sending is on different devices/busses
  • Only use RF433 to receive and use MQTT to send maybe with an extra RF433 transmitter which translates WiFi to RF433.

Any ideas/suggestions?

Regards,
Jeroen

2

It is not possible to start a RF transmit while another device (sensor/remote) is transmitting.
Remember: if two or more devices are transmitting a RF collision will occur.
sensor transmits RF
==|
==sensor received in application
===|
===Command to the RFXCOM transmitter
===============| x seconds later the sensor stops transmitting RF
================| RFXCOM starts transmitting RF

3

Thanks for your reply.

So the only solution is to have the trigger device and action device (ie button and light) on different protocols.

So doorbell button wifi/mqtt and the doorbell chime RF433 for example.