Get power values from an Easymeter Q3D electric meter. Tested with the following "IR-Optokopf für EasyMeter Zähler (USB)" on a Raspberry Pi. http://shop.co-met.info/artikeldetails/kategorie/Smart-Metering/artikel/ir-optokopf-fuer-easymeter-zaehler-usb.html
Please note, that some Raspis have problems with USB2Serial-Converters. To avoid freezes, modify /boot/cmdline.txt
dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait smsc95xx.turbo_mode=N profile=2 loglevel=7 dwc_otg.microframe_schedule=1 dwc_otg.fiq_fix_enable=1 sdhci-bcm2708.sync_after_dma=0 sdhci-bcm2708.enable_llm=1 dwc_otg.lpm_enable=0 dwc_otg.speed=1
Install Package to /opt/ and configure some values in /opt/easymeter/etc/easymeter.cfg Variables should be self explaining ... script should run every minute to gather more accurate data (e.g. for csv export or mysql archive).
install a cronjob to /etc/cron.d/
/etc/cron.d/easymeter
*/1 * * * * root sleep 10 && /opt/easymeter/bin/easymeter.pl > /var/log/easymeter.log 2>&1you can skip the "sleep 30" command if you don't use pvoutput-upload. if you use pvoutput-upload it's recommended, because otherwise there would be some problemes with smaspot, bluetooth and the sma inverters.
upload to pvoutput is done every 5 minutes
OpenHAB integration is done by the OpenHAB REST API.
easymeter.items
Group Easymeter <sun> (All)
Number easymeter_ownership "Zählernummer" <selfEnergy> (Easymeter)
Number easymeter_L1 "L1 [%.2f Wh]" <selfEnergy> (Easymeter)
Number easymeter_L2 "L2 [%.2f Wh]" <selfEnergy> (Easymeter)
Number easymeter_L3 "L3 [%.2f Wh]" <selfEnergy> (Easymeter)
Number easymeter_consumption "Verbrauch [%.2f Wh]" <selfEnergy> (Easymeter)
Number easymeter_import "Netzbezug [%.2f Wh]" <selfEnergy> (Easymeter)
Number easymeter_generation "Erzeugung PV-Anlage [%.2f Wh]" <selfEnergy> (Easymeter)
Number easymeter_export "Einspeisung PV-Anlage [%.2f Wh]" <selfEnergy> (Easymeter)
Number easymeter_counter_import "Zählerstand Bezug [%.2f KWh]" <selfEnergy> (Easymeter)
Number easymeter_counter_export "Zählerstand Einspeisung [%.2f KWh]" <selfEnergy> (Easymeter)
String easymeter_last_update "Letzte Aktualisierung [%s]" <timer> (Easymeter)
Written with StackEdit.