Alllright, so I contacted the supplier today. Asked if maybe the readout was disabled but it looked all good on their end. So I connected only a 1k resistor between RTS and RX, then 2 jumper cables from RX and GND to my usb to serial adapter. See the result below. When I jumped the 5V and RTS anothe...

TD-er wrote: ↑21 Feb 2021, 17:50 Maybe signal is inverted?

That's what my first thought was as well. So I got the good old BC547 inverter out and put that after the 10k but that still left the serial read empty.
Starting to think that there is something wrong with my meter...

Alright so I put the 1k resistor between RX and RTS, and 10k between TX of the meter and RX of the arduino.
I did give me serial available this time which it didn't do yesterday, but the content was empty...?
So it's a step closer I suppose

that looks right with the following remarks. i do not think you need to feed 5v into the meter. there is always a risk of blowing up things also mixing 5V and 3.3 volt without shielding those might cause problems if it is coming from the same source(the ESP) with my setup the 10k did not work and i...

i replaced it with a 2K2 resistor(as advised by the makers of RFXTRX433XL) and then i got good readings. Wait you opened the meter to replace the resistor? if you have a usb-serial cable to RJ11 you could always hookup a notebook with a terminal program to see if there is anything coming out of tha...

joppybt wrote: ↑19 Feb 2021, 21:26 My guess: somewhere there is an error in the wiring up.

I'll try to just directly attach the p1 to the rx, it should give incorrect readings but at least I have something.

Wasn't able to test this anymore yesterday, but when I navigate to that page its not sending any data is what my browser tells me.

What meter do you have? What do you see when you access your device at http://ipaddress:8088 (or whatever TCP port you configured for your Communication - P1 Wifi Gateway) It should (after a small delay) show the 'Telegram' data (that is what Domoticz is polling) I have a landis gyr E350 ZCF110. I'...

TD-er wrote: ↑17 Feb 2021, 11:10 Does the log show any entries like "unknown command" ?
If so, then you must uncheck "Enable Serial port" on Tools -> Advanced. (Web interface)

Unfortunately that didn't change anything

Good morning! I have been trying to read out my electricity meter using the P1 port with an ESP8266/wemos d1 mini look-a-like I had laying around and sending its data to domoticz. I've flashed it with esp easy firmware: mega_20210114_normal_esp8266_4m1m I've found a lot of tutorials on the internet ...