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Showing posts with label OpenEnergyMonitor. Show all posts
Showing posts with label OpenEnergyMonitor. Show all posts

Tuesday, September 27, 2016

Measuring AC Main Supply Voltage with Arduino (2)

   In article named Measuring AC Voltage with an AC to AC power adapter from OpenEnergyMonitor I found a interesting solution for measure AC voltage.
   Schematic is
   I use EmonLib library like in article:
   On DSO I see on R1 resistor
and at A2 input of Arduino board (on R4 resistor):
   I use an LED display with 8 digit 7-segment drived by MAX7219 (I present on article namend Modul de afisare cu 8 cifre LED din 7 segmente fiecare controlate de MAX7219
   I use some configuration for LedControl library (dosc at The Arduino LedControl library):
   Test schematic is
   I write main_voltage_emonlib_1.ino sketch and upload in Arduino board: