I have connected two LEDs to this ESP32 board. Today we are going learn how to use the timer to wake up the chip after a specific amount of time. We can use a timer, a GPIO pin, or the co-processor. There are three ways to wake up the chip. The only module that still works when in deep-sleep mode is the RTC module, the ultra-low-power co-processor, and its memory! So, if we save the data we want to survive the Deep-Sleep mode into the RTC memory they will be intact when we wake the chip back up. Along with the CPU, the main memory of the chip is also disabled, so everything stored in the memory is lost forever. The CPU cores, the WiFI module, the Bluetooth Module, the Peripherals and so on. In this mode as I said earlier, everything is disabled. I get a small percentage of each sale they generate. –įull disclosure: All of the links above are affiliate links. It just needs 0.01 mAs of current in Deep Sleep mode and that’s why we are going to try today. In Deep Sleep mode the ESP32 offers the lowest power consumption. There is a light sleep mode and the Deep – Sleep mode. We are going to put the ESP32 to Deep – Sleep mode where it disables everything except the RTC module. So, if we want to conserve power we have to disable them when don’t use them. The WiFi modules, the Processing Cores, and the Bluetooth module require a lot of current to operate. Also note, even the RTC memory of the ESP32 chip is 4 times larger than the memory of the Arduino Uno. This small amount of memory is very useful as you are going to find out in a moment. Inside the RTC module, we can find a PMU (Phasor measurement unit) a small and very low power 32-bit co-processor, and 8Kbs of RAM memory.

Inside the ESP32 chip, we can find the two processing cores, the RAM and ROM memory, the WiFi module, the Bluetooth Module, a hardware acceleration module for cryptographic applications, the RTC module, and a lot of peripherals. One of the most interesting things about the ESP32 chip is that it offers a low-power deep sleep mode which is very easy to use. It offers a lot of processing power, two 32 bit cores, a lot of memory, Bluetooth and WiFi in a small and easy to use chip. The ESP32 chip is a fantastic new chip with great features. Subscribe to the channel now if you do not want to miss any future video. In this channel, I share everything about the projects I build to help you develop similar projects or inspire you to start making things because it is easy, fun and creative. Hello, guys, I am Nick and welcome to a channel that is all about DIY electronics projects.

Esp32 wifi deep sleep