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Insight Into ESP32 Sleep Modes and Their Power Consumption
There is no question that ESP32 is a worthy competitor to many WiFi/MCU SoCs out there, often beating it on both performance and price. But, depending on which state it’s in, the ESP32 can be a relatively power-hungry device.
When your IoT project is powered by a plug in the wall, you tend not to care too much about power consumption. But if you are going to power your project by batteries, every mA counts.
The solution here is to cut back ESP32’s power usage by leveraging one of its Sleep Modes. It’s really a great strategy for dramatically extending the battery life of a project that doesn’t need to be active all the time.