# RFXtrx433 remains 'connecting'

**URL:** <https://discourse.nodered.org/t/rfxtrx433-remains-connecting/14697>\
**Category:** General\
**Created:** [23 August 2019 09:58 UTC](https://discourse.nodered.org/t/rfxtrx433-remains-connecting/14697 "2019-08-23T09:58:03Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![insomniux](https://avatars.discourse-cdn.com/v4/letter/i/ec9cab/32.png) [@insomniux](https://discourse.nodered.org/u/insomniux)\
**Post date:** [23 August 2019 09:58 UTC](https://discourse.nodered.org/t/rfxtrx433-remains-connecting/14697/1 "2019-08-23T09:58:03Z")

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Hi,  
I'm trying to get my RFXtrx433XL to work but it seems to fail. I connected an RFX sensor node to /dev/ttyUSB0, after which the node starts connecting, but never becomes connected.  
I followed the instructions of the RFX documentation for installing on a Pi, but that manual seems to be outdated (not written for systemd configs).

I would be very happy if someone who has the RFXtrx433xl could help me getting it to work. If I succeed I'll make a tutorial for it.

These are some of my configs:  
lsusb

> Bus 001 Device 004: ID 0403:6015 Future Technology Devices International, Ltd Bridge(I2C/SPI/UART/FIFO)  
> Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter  
> Bus 001 Device 002: ID 0424:9512 Standard Microsystems Corp. SMC9512/9514 USB Hub  
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

lsmod

> Module Size Used by  
> cfg80211 525806 0  
> rfkill 21373 2 cfg80211  
> ftdi\_sio 33030 1  
> usbserial 29996 4 ftdi\_sio  
> snd\_bcm2835 23131 0  
> snd\_pcm 97825 1 snd\_bcm2835  
> snd\_timer 22706 1 snd\_pcm  
> snd 68784 3 snd\_timer,snd\_bcm2835,snd\_pcm  
> bcm2835\_gpiomem 3791 0  
> fixed 3029 0  
> uio\_pdrv\_genirq 3718 0  
> uio 10166 1 uio\_pdrv\_genirq  
> ip\_tables 12512 0  
> x\_tables 20921 1 ip\_tables  
> ipv6 384532 35

dmesg | grep ftdi

> [26.396977] usbcore: registered new interface driver ftdi\_sio  
> [26.397645] ftdi\_sio 1-1.2:1.0: FTDI USB Serial Device converter detected

dmesg | grep tty

> [0.000000] Kernel command line: bcm2708\_fb.fbwidth=656 bcm2708\_fb.fbheight=416 bcm2708\_fb.fbswap=1 vc\_mem.mem\_base=0x1ec00000 vc\_mem.mem\_size=0x20000000 dwc\_otg.lpm\_enable=0 console=tty1 root=PARTUUID=18ff364c-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait  
> [0.001389] console [tty1] enabled  
> [1.059168] 20201000.serial: ttyAMA0 at MMIO 0x20201000 (irq = 81, base\_baud = 0) is a PL011 rev2  
> [26.514890] usb 1-1.2: FTDI USB Serial Device converter now attached to ttyUSB0

cat ser2net.conf

> 10001:raw:0:/dev/ttyUSB0:38400 8DATABITS NONE 1STOPBIT

Thanks  
Insomniux

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<div class="post-metadata">

**Author:** ![ukmoose](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/ukmoose/32/13_2.png) [@ukmoose](https://discourse.nodered.org/u/ukmoose)\
**Post date:** [23 August 2019 10:12 UTC](https://discourse.nodered.org/t/rfxtrx433-remains-connecting/14697/2 "2019-08-23T10:12:26Z")

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You are probably best opening an issue on the nodes github page.  
Max (the author) is usually very responsive, but I’m not sure how often he reads the forum.

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**Author:** ![maxwellhadley](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/maxwellhadley/32/7827_2.png) [@maxwellhadley](https://discourse.nodered.org/u/maxwellhadley)\
**Post date:** [23 August 2019 14:23 UTC](https://discourse.nodered.org/t/rfxtrx433-remains-connecting/14697/3 "2019-08-23T14:23:10Z")

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I have 'answered' this on the github page, with a request for console debug output. I haven't tried an actual physical XL transceiver yet.

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<div class="post-metadata">

**Author:** ![insomniux](https://avatars.discourse-cdn.com/v4/letter/i/ec9cab/32.png) [@insomniux](https://discourse.nodered.org/u/insomniux)\
**Post date:** [23 August 2019 14:42 UTC](https://discourse.nodered.org/t/rfxtrx433-remains-connecting/14697/4 "2019-08-23T14:42:42Z")

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Problem solved.  
Althought I actually do not understand why, the connecton was established after I disconnected the RFXtrx and reconnected it. Also after reboot the connection to the RFXtrx came up automatically so I assume this problem is solved.  
Thanks all for your help

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<div class="post-metadata">

**Author:** ![maxwellhadley](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/maxwellhadley/32/7827_2.png) [@maxwellhadley](https://discourse.nodered.org/u/maxwellhadley)\
**Post date:** [23 August 2019 14:52 UTC](https://discourse.nodered.org/t/rfxtrx433-remains-connecting/14697/5 "2019-08-23T14:52:38Z")

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I have seen this type of issue myself - I think it is something to do with the serialport node, which has been through a lot of changes recently, and the dust hasn't quite settled. There will be an update to node-red-contrib-rfxcom/node-rfxcom fairly soon (well, fairly soon-ish) which will use a more recent serialport version, among other things.