Hi everyone, i would like to put this topic here so that new developers can benefit from it i hope.
when you want to measure the current you need a PPK-2 or Oscilloscope. I would like to put another choice to this. Not the ideal but for the general purpose it is good. For this you will need 2 things. 1xADS1115 16bit ADC and a development kit like nrf52dk or arduino uno with i2c communication capabilities.
Copy the circuit for current sense from the NRF5DK kits. Basically you will need to pass the current through a resistor. And feed one side of the resistor to the A0 of ADS1115 and other side of the resistor to the A1 of the ADS1115. You will need to set the gain of the programmable gain amplifier of ADS1115 to 16x. And choosing a current sense value such as 10 ohm will give you current measurement with the resolution of 0.7 uA. Current sensing resistor can be selected higher to increase the resolution but be careful not to exceed FSR of the 16x gain of the ADS1115. A 20 ohm could do the trick for 0.35 uA resolution.
I will not get into detailed explaination of how to use and what to use. I just wanted to give some idea.
