Battery Charger with Load Sharing + Current Sensor

[iptvbrazar]

Newbie friendly on the house?

I want to create a project where I can charge my Li-Po Battery (3.7v 1000mah) with a Load Sharing and detect when its low energy measuring its voltage with a current sensor INA219 MODULE in a ESP32 microcontroller.

I'm using a step down of 3.3v (LM2596) to power the ESP32, but also in doubt if should connect it directly in the 5v pin.

I'm really new and create this schematic and want to know how I should pass the battery to the sensor and measure its voltage level, its correct this way?

 

[schmitt trigger]

You are missing the INA’s current sense resistor, among other things.

 

[iptvbrazar]

You are missing the INA’s current sense resistor, among other things.

Thank you, sorry I forgot to mentioned its the INA219 module.

 

[Tony Stewart]

He meant you are missing this

 

[iptvbrazar]

He meant you are missing this
View attachment 143507

Thank you for your reply.

I'm using a INA219 module like this:

It haves the R shunt (R100) between the Vin+ and Vin-, his schematic:

The R5 is what you are refering as missing, correct?
Because its not in the INA219 chip datasheet, but there is a module of adatafruit with it, and what I'm using.

If its not what its refering, please let me know so I can fix it.