Hello @Robert.Wall , i’ve just finished the volage sensing circuit with ZMPT101B CT you described here
Could you please have a look to the final schematic for any remark or recommandation :
-I have used the bias buffering recommanded on the learn section (with MCP6002).
-I have added a 1k resistor as i’ve seen it in the emontx3 hardware files (to limit current ?)
-I have also added an RC filter so the Shannon will stay happy (anti aliasing as stated in the learn section too).
- AMS1117 is used to give the 3V3, TENSTAR module to give 5V out of the AC.
-AC line is mapped to TENSTAR to give energy to the whole board (is’t okey to do so ? i mean on the accuracy of measurements ).
