/challenges-projects/design-challenges/design-for-a-cause-2021/b/blog/posts/microgrid-connection-unit-7-oled-display-automatic-calibrationHaving broken my Nano33, I decided to switch back to the regular Arduino Nano. But I decided to stay with the adaptations to 3.3V, and use the 3.3V output of the Arduino Nano as the analog reference. That would allow me to keep the code and schematicen-USTelligent Community 12