Weird issue with Nexa LMST-606

[kisse66]

I'm having a weird issue with LMST-606 door switch - RFlink only sees the OFF - message (closing) unless I open it soon after closing! If I keep opening and closing it at around 1Hz RFlink sees all the messages, but if I keep it closed for several seconds the ON-message is not seen at all. I have verified with RF sniffer (SDR) that it is sending it (well, sending something that looks about right). I thought this is so weird that it must be broken so I went and got another one, but it does the same.

Outlets EYCR-2300 and remote NEYCT-705 work fine. Running latest r48 and using SRX887 like receiver.

first opening and closing fast, then keeping it closed for 5 sec or so:

20;02;NewKaku;ID=01036dee;SWITCH=a;CMD=ON;
20;03;NewKaku;ID=01036dee;SWITCH=a;CMD=OFF;
20;04;NewKaku;ID=01036dee;SWITCH=a;CMD=ON;
20;05;NewKaku;ID=01036dee;SWITCH=a;CMD=OFF;
20;06;NewKaku;ID=01036dee;SWITCH=a;CMD=ON;
20;07;NewKaku;ID=01036dee;SWITCH=a;CMD=OFF;
20;08;NewKaku;ID=01036dee;SWITCH=a;CMD=OFF;
20;09;NewKaku;ID=01036dee;SWITCH=a;CMD=OFF;

I did order a few different receivers to try (will take weeks to arrive), but has someone else seen this?

This quite likely is not a range issue, looks the same at 5cm ... 10m

[TD-er]

Just an idea... where is the reed switch located? Maybe you have to position the magnet at another position to get a better contact?
Make sure the timer dial is set to "0" at the back.

[kisse66]

yeap, timer is off and as I said I have looked with a radio receiver that it does send (something) when I open it. Can't see what it's sending but looks like the same. The magnet seems to close the contct at about 15mm distance.

I can do more debug tomorrow.

[kisse66]

Here's a debug log

https://pastebin.com/FdRkC7Je

I kept the Nexa switch closed for 10seconds, then open for 5 and repeat. Looks like debugs off it misses all ON-messages, but debug on it does see those !?
(also with debug off it does see ON-messages if I don't keep the switch closed for too long)

Can someone make sense from these?

Anything else to try?

[MichaelKightly]

I'm having the same issue.

[kisse66]

Getting forward - Have not yet received the collection of different receivers, but I ordered the RFlink PCB kit with Aurel receiver. Just got it soldered and it seems this receiver is clearly better. A quick test did not show any skipped messages at close range now!

It's the same Arduino, just plugged in the Domo-shop board. Need to test a lot more, but at least the receiver has an impact (earlier I had "DL-RXC2015 V2.0" with a CS808 chip). Still wondering how the speed of opening/closing can affect like this...

[kisse66]

Seems to work. Sometimes there is a delay before getting the open-message (like 1s). Maybe this indicates it's still hard to read and it takes several attempts (Nexa keeps repeating it for quite long time). But so far it looks ok with the Aurel tranceiver.


Here's the receiver that almost worked. Don't remember where I got it from:

rf433b.jpg (51.31 KiB) Viewed 6636 times

The attachment rf433b.jpg is no longer available

[kisse66]

rf433t.jpg (51.73 KiB) Viewed 6634 times