ESP-32 data logger (3): logger redesign

 I have redesigned the ESP32 logger: 

• I have abandoned using the ESP32 ADCs entirely
• The logger will use an ADC module with the 16 bit 4 channel ADS1115 ADC
• Rather than use a current sense resistor, I have opted to use a ACS712 Hall effect module, which will feed a voltage proportional to current to the ADS1115
• Battery voltage will be fed to the ADC  using a voltage divider, not shown on the schematic below. 
• I've added an SSD1306 OLED display. 
• I added a voltage divider breakout with a 0.2 voltage reduction for sampling the battery voltage

The schematic for the new logger design is below.  I have ordered the ADS1115 module and the ACS712 module from Amazon.com. Delivery is due Friday/  

click to enlarge