Read data from Smart Meter using P1 USB cable

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@ funip, I used the mbsolget_p1_a1.py script from http://www.embezon.nl/blog/uitlezen-slimme-meter/. This script will check on filesize of the log. If the filesize < ### byte it will wait for the next telegram.

Something else: I’m trying to add the total gas usage to pimatic. The telegram looks like this:

0-1:24.2.1(151018210000S)(00095.324m3)*

So far, I managed to change the matchcode to:

0-1:24\.2\.1\x28([0-9]+\.[0-9]+).m3

But it doesn’t work due to the middle part: (151018210000S). I get stuck on the meaning of x28, [0-9], + etc. Any tips?

Oops, just found out it’s just regex. Found the correct matchcode:

0-1:24\.2\.1\x28.*\x28([0-9]+\.[0-9]+).m3\)

Just connected my smartmeter to my RPi with an USB to RJ11 cable. With the command
cat /dev/ttyUSB0"
I get some data from my meter and with
cat /dev/ttyUSB0 > stroom.log"
the data is written into a log file (/home/pi/stroom.log).

/XMX5LGBBFFB231329751

1-3:0.2.8(42)
0-0:1.0.0(160203113835W)
0-0:96.1.1(4530303034303033303130323930303135)
1-0:1.8.1(000576.986kWh)
1-0:2.8.1(000000.000kWh)
1-0:1.8.2(000453.861kWh)
1-0:2.8.2(000000.000kWh)
0-0:96.14.0(0002)
1-0:1.7.0(00.401kW)
1-0:2.7.0(00.000kW)
0-0:96.7.21(00002)
0-0:96.7.9(00000)
1-0:99.97.0(0)(0-0:96.7.19)
1-0:32.32.0(00000)
1-0:32.36.0(00000)
0-0:96.13.1()
0-0:96.13.0()
1-0:31.7.0(002A)
1-0:21.7.0(00.401kW)
1-0:22.7.0(00.000kW)
0-1:24.1.0(003)
0-1:96.1.0(4730303139333430323434383839303135)
0-1:24.2.1(160203110000W)(00337.893m3)
!E602

In pimatic I created a new device just like the example in this threat:

{
  "id": "energymeter",
  "name": "Energy Meter",
  "class": "LogWatcher",
  "file": "/home/pi/stroom.log",
  "attributes": [
    {
      "name": "tariff1",
      "type": "number",
      "unit": "kWh"
    },
    {
      "name": "tariff2",
      "type": "number",
      "unit": "kWh"
    }
  ],
  "lines": [
    {
      "match": "1-0:1\\.8\\.1\\x28([0-9]+\\.[0-9]+)kWh\\x29",
      "tariff1": "$1"
    },
    {
      "match": "1-0:1\\.8\\.2\\x28([0-9]+\\.[0-9]+)kWh\\x29",
      "tariff2": "$1"
    }
  ]
},

But… pimatic shows “Unknown” twice:

Anyone with an idea what is going wrong?

A little off-topic, but a couple of days I stumbled upon https://github.com/jantenhove/P1-Meter-ESP2866 . Since I’m not an developer, I am not sure if it is possible to modify this sketch to send the meter data to pimatic.

Before I give it a try: should it be possible to log meter data through the pimatic API?

@jbs Why use the logwatcher? with the plugin pimatic-smartmeter you can pull the info directly from the USB.
http://pimatic.org/plugins/pimatic-smartmeter/

@lxz you can adjust the code to update a variable in pimatic.

@incmve said:

@jbs Why use the logwatcher? with the plugin pimatic-smartmeter you can pull the info directly from the USB.
http://pimatic.org/plugins/pimatic-smartmeter/

Yes, tried that also, but with this result:

@jbs said:

@incmve said:

@jbs Why use the logwatcher? with the plugin pimatic-smartmeter you can pull the info directly from the USB.
http://pimatic.org/plugins/pimatic-smartmeter/

Yes, tried that also, but with this result:

Fixed this. baudRate should be 115200.