I have connected rpi through voltage divider and I was able to read data from 250/85 mppt. I read data every 15 seconds and write data to influxdb/grafana. Everything works fine with exception that after certain period of time current values are not correct. For example, it shows PPV and I values at 10PM like there is a daylight. After I stop program and start it again everything is ok. And then it happens again. Does anyone knows what could cause this?