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Simple Axpert / Pylontech Controller


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  • 1 month later...

Just an update on my "Lockdown project":

 

- Interfaces to 'Blynk': Can see the values and also change settings using the Blynk app on my phone.

-Google sheets: records data to google sheets. Interval is adjustable. To get a nice graph: use Grafana. I have installed a local copy of Grafana with the google sheets plugin on my laptop. It just pulls the data in seamlessly.  

-IFTTT (If this then that): notifies inverter faults, inverter switching between battery/grid and can also notify at specific SOC low and high setpoints. I have setup my IFTTT to send messages to Telegram. Can also send to email.

 

Hope this gives some ideas for you guys out there doing their own inverter interface controller / software.

Screenshot_2020-05-29-07-00-10-558_cc.blynk.thumb.jpg.f71f1c10161e3817c453a250996a8049.jpggrafana2.thumb.JPG.763f64dd100e44594aad199f0c8967ce.JPGtelegram.JPG.cb178d769fbee9ebf0a0597c3f75a07c.JPG

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  • 3 weeks later...
  • 1 month later...

Hi Windgat. Thanks. Configured esp8266 for two serial ports: one standard and one using software serial on the other two pins. I first used Max3232 level shifters to convert from ttl to rs232 , but changed to a normal discrete transistor level shifter after having endless issues with that chips. So for your question: yes, the voltages on the inverter is too high and must be converted. 

Just an update on the software: have changed the logging from Google sheets to thingspeak now - gives more free memory. Some nice apps for thingspeak on Playstore and can also configure "reacts" on thingspeak to notify me of battery levels, inverter mode etc. 

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Hi Pierre. At the moment it is so customized for the system I have (fixed number of pylontechs / inverter / gauge ranges), that it would not suite everyone. The plan is to have it "universal" with configuring it to the system you have. I also do have a slight problem with it freezing / rebooting from time to time. Once that is sorted I can make it available. The idea at first was to give others (that know some programming) ideas as to what can be done.

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