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  1. A

    Trouble with multiple voltage dividers

    @BobK and @Gryd3 - thank you a lot for clarifications with the functionality of SHDN. I will try your solutions, specially when the MCU is in sleep mode. I'll let you know my results...
  2. A

    Trouble with multiple voltage dividers

    Yeah, I start to understand that now :) And your solution is more elegant - I just have to add into equation the diode voltage drop...
  3. A

    Trouble with multiple voltage dividers

    You are absolutely right! My diode at the end of the third voltage divider is cutting all current... This is what I've tried to do - to have <0.4V always on SHDN, thus the regulator be disabled, and feed 3.3V through GPIO when I need to activate it... what do you mean by pull it low via a resistor?
  4. A

    Trouble with multiple voltage dividers

    So true...I've tried to figure out a formula out of them and not much precision...I'll replace them with one separate voltage divider for ADC and another for SHDN, using only 2 resistor for each. Thank you! I'm using 1N4001 diodes, and they have a voltage drop of ~0.2V. At the end of third...
  5. A

    Trouble with multiple voltage dividers

    I’m using an ESP8266-DEV to measure battery voltage and control some LED lights. The first 2 voltage dividers are used to get the voltage bellow 1V, required by the ADC GPIO – it is working fine. The third voltage divider lower the voltage bellow 0.4V, in order to power down the Pololu...
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