Proposal: Power Saving

[entorb]

If your ESP32 is powered by a powerbank (link I plan to do) you might be interested in power saving settings.

In an old project of mine, I use these settings:

// underclocking the ESP32 CPU
#include "esp32-hal-cpu.h"
setCpuFrequencyMhz(80); // 240, 160, 80

// WiFi power saving
#include "esp_wifi.h"
// enable Power Saving Modem -> only WiFi keep 
// esp_wifi_set_ps(WIFI_PS_MODEM); // ESP32 1.0.4
// esp_wifi_set_ps(WIFI_PS_MIN_MODEM); // ESP32 2.0.0
esp_wifi_set_ps(WIFI_PS_MAX_MODEM); // ESP32 2.0.0
// see https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-guides/wifi.html

Here an interesting recent article about powersaving.

[christian-heusel]

This sounds simple enough, if you already have some expertise with these settings feel free to send a PR! 😊