An Arduino sketch to connect an INA-219 module to an ESP dev board and measure Voltage, Current, Power, Energy Consumption and Costs via the Blynk mobile app.
Changes SimpleTimer functions to the newly discovered short hand verision... no more need to set up a new callback function, just declare it in line when setting the timer!
Basically no functionality changes, just fewer lines of code overall.
Added OTA optional define in settings.h