Hello,
Currently, I'm working to build an MPPT for my solar panel for my study project.
I'm using DOIT ESP32 kit V1. I use 2 INA219 sensors on the input & output of my dc-dc converter (I think this is a remake from another company not an original from Adafruit). My plan for this project is to use a single 50 WP solar panel with Voc 22V and Isc 3A. I think INA219 is enough because from it specs can read up to 3.2 A.
I use ESP32 to generate a 30Khz PWM signal.
All were normal until I connect the supply (from PSU for testing). I notice that Serial Monitor was going slow down and both my sensors became inaccurate and then ESP32 will stop working like Serial Monitor was stopped but the PWM signal was not.
As you can see from the picture above,
VI = Voltage Input, VO = voltage output, CI = current input, CO = current output. The sensor very unstable the current was read to 0, and the voltage dropped (btw VO was connected to a 12V battery which is should be around 13V)
Sorry for my bad grammar, but please help me 
