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I'm developing an application on ESP32 using Deepthe deep-sleep feature to save battery. I read that ESP32 consumes only uA when it works on Deepdeep-Sleepsleep.

I bougthbought a board from Az-Delivery called D1-R32 with ESP32-WROOM-32 inside.

Text

I programmed it to enter in deep sleep, and I used some AA batteries to power it up. I also powered on my oscilloscope and I used a shunt resistor (1 Ohmohm - 1%) to measure the current flowing from the batteries to the ESP32 board.

The first measure I obtained is about 12 mA. I tried to change the LDO regulator, because the one that the board has is the AMS1117, and that LDO regulator has a quiescent current of 10 mA, so iI thought... problem solved?

I replaced the LDO regulator for another one that has 70 uA Quiescentquiescent current. I powered up the ESP32 modules with the batteries, connected the osciloscopeoscilloscope again and.... now iI get 6 mA.

I also tried to quitdisconnect the on state LED, it. It only dropped to 5.7 mA.

There'sIs there something inon this board, that iI can modify to achieve a power consumption of uA  ?

Thank you very much, despite my bad english as I'm not native.

I'm developing an application on ESP32 using Deep-sleep feature to save battery. I read that ESP32 consumes only uA when it works on Deep-Sleep.

I bougth a board from Az-Delivery called D1-R32 with ESP32-WROOM-32 inside.

Text

I programmed it to enter in deep sleep, and I used some AA batteries to power it up. I also powered on my oscilloscope and I used a shunt resistor (1 Ohm - 1%) to measure the current flowing from the batteries to the ESP32 board.

The first measure I obtained is about 12 mA. I tried to change the LDO regulator, because the one that the board has is the AMS1117, and that LDO regulator has a quiescent current of 10 mA, so i thought... problem solved?

I replaced the LDO regulator for another one that has 70 uA Quiescent current. I powered up the ESP32 modules with the batteries, connected the osciloscope again and.... now i get 6 mA.

I also tried to quit the on state LED, it only dropped to 5.7 mA.

There's something in this board, that i can modify to achieve a power consumption of uA  ?

Thank you very much, despite my bad english as I'm not native.

I'm developing an application on ESP32 using the deep-sleep feature to save battery. I read that ESP32 consumes only uA when it works on deep-sleep.

I bought a board from Az-Delivery called D1-R32 with ESP32-WROOM-32 inside.

Text

I programmed it to enter in deep sleep, and I used some AA batteries to power it. I also powered on my oscilloscope and I used a shunt resistor (1 ohm - 1%) to measure the current flowing from the batteries to the ESP32 board.

The first measure I obtained is about 12 mA. I tried to change the LDO regulator, because the one that the board has is the AMS1117, and that LDO regulator has a quiescent current of 10 mA, so I thought... problem solved?

I replaced the LDO regulator for another one that has 70 uA quiescent current. I powered the ESP32 modules with the batteries, connected the oscilloscope again and now I get 6 mA.

I also tried to disconnect the on state LED. It only dropped to 5.7 mA.

Is there something on this board, that I can modify to achieve a power consumption of uA?

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ESP32 - High current in deep sleep

I'm developing an application on ESP32 using Deep-sleep feature to save battery. I read that ESP32 consumes only uA when it works on Deep-Sleep.

I bougth a board from Az-Delivery called D1-R32 with ESP32-WROOM-32 inside.

Text

I programmed it to enter in deep sleep, and I used some AA batteries to power it up. I also powered on my oscilloscope and I used a shunt resistor (1 Ohm - 1%) to measure the current flowing from the batteries to the ESP32 board.

The first measure I obtained is about 12 mA. I tried to change the LDO regulator, because the one that the board has is the AMS1117, and that LDO regulator has a quiescent current of 10 mA, so i thought... problem solved?

I replaced the LDO regulator for another one that has 70 uA Quiescent current. I powered up the ESP32 modules with the batteries, connected the osciloscope again and.... now i get 6 mA.

I also tried to quit the on state LED, it only dropped to 5.7 mA.

There's something in this board, that i can modify to achieve a power consumption of uA ?

Thank you very much, despite my bad english as I'm not native.