Hi Florian, Was curious if you also had the chance to use INA219 for monitoring DC current instead of INA226 (I was able to find in local shops only INA219 and Chinese stuff take more than one month on the road :slight_smile: ). Couldn’t find meaningful differences between the two except for the h…

Hi Petrica, Thanks for these infos. [image] PetricaM: However, data is still not published to MQTT broker. As mentioned above, there is a negligible difference between the vbus and shunt voltage (actually shunt voltage gets published to MQTT). Could you try to replace this line Sta…

Hi Petrica, I didn’t have an INA219, and it seems that both can fit to your usage. It should not be difficult to handle INA219. If some people want to add it as a new ZsensorINA219 don’t hesitate.

Will let you know on the progress when I receive the sensors.

Hi Florian, INA219 didn’t worked with OMG (or it was a bad unit) so I’ve ordered INA226 which arrived today. Could you share your schematics for INA226? I don’t think I’ve done bad connections (used pins 20 and 21 on Arduino Mega + Ethernet shield; reversing SDA and SCL pins results in no data com…

[image] PetricaM: Could you share your schematics for INA226? Hello Petrica, I used it with an esp8266, I don’t have any schematic to provide unfortunately nevertheless to connect your INA226 to pin 20 and 21 for an arduino mega seems fine. [image] PetricaM: I know for sure the power su…

Hi Florian, I get back with additional feedback. Found the culprit for the lack of reading in the voltage area: vbus trace on the pcb was faulty :smiley: . In the same run I’ve realized several other things: {"volt":" 0.002" in the initial serial log is actually the readout on the shunt, not the…

Hi Florian, Yeap, that solved it. Thanks

Thanks, for pointing that. Correction integrated: replace the use of calculate buffer by a constant buffer size for json size committed 12:46PM - 29 Jun 19 UTC (UTC) [1technophile] 1technophile …

INA219 vs. INA226

Sensors

1technophile June 27, 2019, 6:22am 7

Hi Petrica,

Thanks for these infos.

Could you try to replace this line

StaticJsonBuffer<JSON_MSG_CALC_BUFFER> jsonBuffer;

StaticJsonBuffer<JSON_MSG_BUFFER> jsonBuffer;

Maybe it could help