Hanporten exporter

Hanporten exporter exposes OBIS data from a Swedish smartmeter as Prometheus metrics.

This software connects to a ESP8266/Tasmota TCP/serial bridge to read serial data from the smartmeter, that then is exposed as Prometheus metrics on port 9102. The program just have one option, and that is what TCP/serial bridge(s) to connect to.

go install github.com/larsve/hanportenexporter
hanportenexporter tasmota:8232

Setup

An ESP8266 with the Tasmota ZigbeeBridge firmware is connected to the smartmeter through HAN-porten (aka P1/H1) and configured as a serial bridge. See Hanporten.se for more information about the Swedish smartmeter HAN/H1/P1-port.

Configure ESP8266/Tasmota ZigbeeBridge serial bridge

Connect to the Tasmota web GUI on the ESP8266 in a webbrowser, and complete the steps below to setup the TCP/Serial bridge:

1. In Main Menu -> Configuration -> Configure Module
   • Set Module type to Generic (18)
   • Click Save.
2. In Main Menu -> Configuration -> Configure Module
   • Set TX GPIO1 to TCP Tx
   • Set RX GPIO3 to TCP Rx
   • Click Save.
3. In Main Menu -> Consoles -> Console
   • Write Rule1 + ON System#Boot DO Backlog TCPBaudRate 115200; TCPStart 8232 ENDON to setup the rule that will start the serial bridge when the device starts (the number after TCPStart is the TCP port that the serial bridge will listen on).
   • Write Rule1 1 to trigger the rule to start the serial bridge without restarting the device.
4. Start hanportenexporter with the name/IP of the ESP8266 and the port that the TCP serial bridge is configured to listen on.