I would like to wake-up ESP 32 from sleep mode using Arduino.
I am planning to use mosfet as switch to control the pins to wake-up the ESP 32. Is this possible?
What other options do I have?
Hi,
You shouldn't need a MOSFET.
What do you want to wake the ESP32 up with, another controller?
Can you please explain your project?
Thanks.. Tom.. 
When the ESP32 main processor is asleep. The ULP and RTC can be used to detect external thnigies and respond to those external thingies.; such as waking up the main CPU.
Have a peek at the ESP32 API
As the ESP32 is not 5V tolerant, level shifters should be used. A MOSTFET can be made into a good level shifter.
Yes, i want to wake-up esp32 by arduino. I would like to use esp32 as motion alarm for my bike when it was park then go to sleep when i am riding it. Iwant to automatically wake-up the esp32 so I want to use arduino with accelerometer to trigger the wakeup pin.
I want to wake-up esp32 by ext0 external wake-up but i want to replace the push button by switch controlled by arduino.
https://www.google.com/amp/s/lastminuteengineers.com/esp32-deep-sleep-wakeup-sources/amp/
This webpage discuss how to wake-up the esp32.
Why use an Arduino to wake up an ESP32?
The MMU can be programmed to generate an interrupt, which can wake the ESP32 directly.
You can read about the ESP32 here
This the diagram for external wake-up.
I want to replace the push button by a switch controlled by arduino but I am worried on using transistor because of the current gain.
Or maybe I can connect an arduino 3.3V output pin to the wake-up pin of esp32 with pull down resistor?
Hi,
Please read post #6.
You may not need the Arduino as the ESP32 and IMU combination may work together.
PLEASE READ THIS;
Also look at the data/specs of your IMU, see if it can generate an interrupt that you could use to wake-up the ESP32.
This way you will save a lot of power from your battery.
Tom...
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