How to communicate with E90-DTU-433L30E and 433MHz Wireless Weather Station

Configuration
1

Hello again,

I can turn on/off my led with relay with your help in this post: :pray:

Today I want to read temperature and I need some help again.
I have this:

rflink:
host: 192.168.1.33
port: 8886
tcp_keepalive_idle_timer: 600

I don’t know how to use HA but I look in DevelopersTools->States->Entity and I don’t see anything looks like my transmitter…

Can I have some communication between these hardwares?
Do you know some useful link about configuration and tutorial for HA for what I want to do?

2

or maybe this page because my HA talk throw Ethernet
TCP - Home Assistant (home-assistant.io)
I will try this command on a linux terminal and maybe I can see something

nc -l -p 8887

I will check with wireshark too

1 Like
3

You might not have read the rflink doc thoroughly.
See the note regarding “Adding devices Automatically”

4

Thanks!
This evening I will try this in configuration.yaml

rflink:
host: 192.168.1.33 # transmitter ip
port: 8886 # tramsmitter port

sensor:

  • platform: rflink
    automatic_add: true

logger:
default: error
logs:
rflink: debug
homeassistant.components.rflink: debug

5

The RFLink integration only talks with an RFLink gateway. I don’t think you can connect that device using RFLink integration.

I’m not sure if it is the same device, but it could be that it uses a Modbus protocol:

If so, you can try using Modbus integration to see what you can get:

Cheers.

1 Like
6

Thanks!
I think same you that RFLink is not the answer.

model_specification
model_specification978×334 73.2 KB

When I see the array above, I understand that my model doesnt support Modbus (433L30E)

For the side Ethernet, I see nothing with the netcat command but I see le link led is yellow and on. So if I believe the text under, it is connecting well.

link_led
link_led934×129 30.8 KB

I think the big problem is that the no communication between the weather station and the E90-DTU…

I will try to play with the software in datasheet: TCP/UDP network debugging assistant.

7

Screenshot_2021-07-02-15-48-52-998_com.alibaba.aliexpresshd
Screenshot_2021-07-02-15-48-52-998_com.alibaba.aliexpresshd1080×2340 161 KB

It looks like that weather station works fine with RFLink. What they use between weather station and raspberry pi??

8

Probably some original sin, here.
E90-DTU-433L30E is a Lora transceiver, which happens to use the 433MHz frequency. It’s not an RFLink gateway, afaict.

I don’t see any reason to believe that the ED90 and the weather station can communicate.

9

An RFLink gateway is used here.

You can DIY (there is a lot of info from internet):

There is also people that sells the gateway assembled:

10

Arduino Mega and an RF receiver, this is the boad supported by RFlink

If your device is a digoo dg r8s Alternatively you may use :

  • an RTL 433 SDR module + the RTL 433 library see here
  • an ESP32 with Openmqttgateway + a cc1101 with RTL 433
  • an RF receiver connected to the PI with Pilight library 0.16.2
  • a Sonoff RF bridge with a direct hack and Openmqttgateway with Pilight 0.16.2
  • an esp32 with Openmqttgateway and Pilight 0.16.2 + an RF receiver

Note that 0.17 of Pilight had a regression and does not work with your device

As a general option for temperature measurement people are more and more considering BLE devices like the LYWSD03MMC .

11

Like a noob, I thought to choose the same frequency both side was enough.
and just need to choose the same protocol after…

The seller of the E90-DTU(433L30E) answer me that I can use Lora Module SMD SX1278 433MHz Wireless. I don’ need long distance and this solution seems more expensif.

The seller of the “weather station” did not answer me yet… But if I can know more about it, I want to use this solution. I gonna dig this way.

Thanks for your help and I hope this thread can help someone else