There is arduino examples for sub Hz PWM?

It seemed that wifi goto in sleep mode. I disable sleep mode after Wifi.begin() and all work fine!

void setup()
{
...
WiFi.begin(ssid, password);
WiFi.setSleep(false);// this code solves my problem
...
}

It seemed that wifi goto in sleep mode. I disable sleep mode after Wifi.begin() and all work fine!

void setup()
{
...
WiFi.begin(ssid, password);
WiFi.setSleep(false);// this code solves my problem
...
}

It seemed that wifi goto in sleep mode. I disable sleep mode after Wifi.begin() and all work fine!

void setup()
{
...
WiFi.begin(ssid, password);
WiFi.setSleep(false);// this code solves my problem
...
}

Use cheap MCP4725 DAC.

ESP32 can use any pin for SDA SCL, as you want (if another function dont use this pin also).

May be you may write ADC data to ESP32 FLASH and analyse it after collecting procedure? See EEPROM or SPIFFS examples and edit "partitions" folder in your espressive/esp32 folder.

I make backup files of old version that work fine:
https://github.com/espressif/arduino-esp32/issues/1921

What i can do for use this method in rapid mode? about 20 request in sec?

I try to solve this a couple of week - no results. after client.stop() command bit in client.available() must be set to false, but it = 1 and client.available = 0 bytes then program spin in while(client.available()) up to "[D][WiFiClient.cpp:452] connected(): Disconnected: RES: 0, ERR: 128" after ab...