How to Change CPU Frequency or Speed for ESP32 Modules via Arduino IDE

How to Change CPU Frequency or Speed for ESP32 Modules via Arduino IDE Code to copy into Arduino IDE: "esp32-hal-cpu.h" void setup(void) { Serial.begin(115200); setCpuFrequencyMhz(80); //Set CPU clock to 80MHz fo example Serial.println(); Serial.print("CPU Frequency is: "); Serial.print(getCpuFrequencyMhz()); //Get CPU clock Serial.print(" Mhz"); Serial.println(); } void loop() { } Links for buying ESP32-PICO-KIT: Good quality link I bought this from: Female header and ROHS compliant version: Other sites to order from: TinyPICO ( a low power version of the ESP32): CAD model for ESP32-PICO-KIT: #Mhz